bump version 2.6.0

Bump actions/cache from 3 to 4

.github/dependabot.yml

@@ -0,0 +1,11 @@
+# To get started with Dependabot version updates, you'll need to specify which
+# package ecosystems to update and where the package manifests are located.
+# Please see the documentation for all configuration options:
+# https://docs.github.com/code-security/dependabot/dependabot-version-updates/configuration-options-for-the-dependabot.yml-file
+
+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"

.github/workflows/arduino-lint.yaml

@@ -0,0 +1,10 @@
+name: Arduino library compliance (Lint)
+on: [push, pull_request]
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: arduino/arduino-lint-action@v1
+        with:
+          library-manager: update

.github/workflows/compile-arduino_wifinina-examples.yaml

@@ -0,0 +1,69 @@
+name: Compile Arduino WiFiNINA Examples
+
+# See: https://docs.github.com/en/free-pro-team@latest/actions/reference/events-that-trigger-workflows
+on:
+  push:
+    paths:
+      - ".github/workflows/compile-arduino_wifinina-examples.yaml"
+      - "examples/arduino_wifinina/**"
+      - "src/**"
+  pull_request:
+    paths:
+      - ".github/workflows/compile-arduino_wifinina-examples.yaml"
+      - "examples/arduino_wifinina/**"
+      - "src/**"
+  schedule:
+    # Run every Tuesday at 8 AM UTC to catch breakage caused by changes to external resources (libraries, platforms).
+    - cron: "0 8 * * TUE"
+  workflow_dispatch:
+  repository_dispatch:
+
+jobs:
+  build:
+    name: ${{ matrix.board.fqbn }}
+    runs-on: ubuntu-latest
+
+    env:
+      SKETCHES_REPORTS_PATH: sketches-reports
+
+    strategy:
+      fail-fast: false
+
+      matrix:
+        board:
+          - fqbn: arduino:samd:mkrwifi1010
+            platforms: |
+              - name: arduino:samd
+            artifact-name-suffix: arduino-samd-mkrwifi1010
+            libraries: |
+              - name: WiFiNINA
+          - fqbn: arduino:samd:nano_33_iot
+            platforms: |
+              - name: arduino:samd
+            artifact-name-suffix: arduino-samd-nano_33_iot
+            libraries: |
+              - name: WiFiNINA
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Compile examples
+        uses: arduino/compile-sketches@v1
+        with:
+          fqbn: ${{ matrix.board.fqbn }}
+          platforms: ${{ matrix.board.platforms }}
+          libraries: |
+            # Install the library from the local path.
+            - source-path: ./
+            ${{ matrix.board.libraries }}
+          sketch-paths: |
+            - examples/arduino_wifinina/arduino_wifinina.ino
+          enable-deltas-report: true
+          sketches-report-path: ${{ env.SKETCHES_REPORTS_PATH }}
+
+      - name: Save sketches report as workflow artifact
+        uses: actions/upload-artifact@v4
+        with:
+          if-no-files-found: error
+          path: ${{ env.SKETCHES_REPORTS_PATH }}
+          name: sketches-report-${{ matrix.board.artifact-name-suffix }}

.github/workflows/compile-seeed-studio-examples.yaml

@@ -0,0 +1,81 @@
+name: Compile SeedStudio Examples
+
+# See: https://docs.github.com/en/free-pro-team@latest/actions/reference/events-that-trigger-workflows
+on:
+  push:
+    paths:
+      - ".github/workflows/compile-seeed-studio-examples.yaml"
+      - "examples/seeed-studio/**"
+      - "src/**"
+  pull_request:
+    paths:
+      - ".github/workflows/compile-seeed-studio-examples.yaml"
+      - "examples/seeed-studio/**"
+      - "src/**"
+  schedule:
+    # Run every Tuesday at 8 AM UTC to catch breakage caused by changes to external resources (libraries, platforms).
+    - cron: "0 8 * * TUE"
+  workflow_dispatch:
+  repository_dispatch:
+
+jobs:
+  build:
+    name: ${{ matrix.board.fqbn }}
+    runs-on: ubuntu-latest
+
+    env:
+      SKETCHES_REPORTS_PATH: sketches-reports
+
+    strategy:
+      fail-fast: false
+
+      matrix:
+        board:
+          - fqbn: Seeeduino:samd:seeed_XIAO_m0:usbstack=arduino,debug=off
+            platforms: |
+              - name: Seeeduino:samd
+                source-url: https://files.seeedstudio.com/arduino/package_seeeduino_boards_index.json
+            libraries: |
+              - name: Seeed Arduino rpcWiFi
+              - name: Seeed Arduino rpcUnified
+              - name: Seeed_Arduino_mbedtls
+              - name: Seeed Arduino FS
+              - name: Seeed Arduino SFUD
+            artifact-name-suffix: seeeduino-xia0
+          - fqbn: Seeeduino:samd:seeed_wio_terminal
+            platforms: |
+              - name: Seeeduino:samd
+                source-url: https://files.seeedstudio.com/arduino/package_seeeduino_boards_index.json
+            libraries: |
+              - name: Seeed Arduino rpcWiFi
+              - name: Seeed Arduino rpcUnified
+              - name: Seeed_Arduino_mbedtls
+              - name: Seeed Arduino FS
+              - name: Seeed Arduino SFUD
+            artifact-name-suffix: seeeduino-wio_terminal
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Compile examples
+        uses: arduino/compile-sketches@v1
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          fqbn: ${{ matrix.board.fqbn }}
+          platforms: ${{ matrix.board.platforms }}
+          libraries: |
+            # Install the library from the local path.
+            - source-path: ./
+            ${{ matrix.board.libraries }}
+          sketch-paths: |
+            - examples/seeed-studio/xio-wio-terminal/WebSocketClient
+          enable-deltas-report: true
+          sketches-report-path: ${{ env.SKETCHES_REPORTS_PATH }}
+
+      - name: Save sketches report as workflow artifact
+        uses: actions/upload-artifact@v4
+        with:
+          if-no-files-found: error
+          path: ${{ env.SKETCHES_REPORTS_PATH }}
+          name: sketches-report-${{ matrix.board.artifact-name-suffix }}

.github/workflows/compile-unor4wifi-examples.yaml

@@ -0,0 +1,60 @@
+name: Compile Arduino UNO R4 WiFi Examples
+
+# See: https://docs.github.com/en/free-pro-team@latest/actions/reference/events-that-trigger-workflows
+on:
+  push:
+    paths:
+      - ".github/workflows/compile-unor4wifi-examples.yaml"
+      - "examples/arduino_renesas/**"
+      - "src/**"
+  pull_request:
+    paths:
+      - ".github/workflows/compile-unor4wifi-examples.yaml"
+      - "examples/arduino_renesas/**"
+      - "src/**"
+  schedule:
+    # Run every Tuesday at 8 AM UTC to catch breakage caused by changes to external resources (libraries, platforms).
+    - cron: "0 8 * * TUE"
+  workflow_dispatch:
+  repository_dispatch:
+
+jobs:
+  build:
+    name: ${{ matrix.board.fqbn }}
+    runs-on: ubuntu-latest
+
+    env:
+      SKETCHES_REPORTS_PATH: sketches-reports
+
+    strategy:
+      fail-fast: false
+
+      matrix:
+        board:
+          - fqbn: arduino:renesas_uno:unor4wifi
+            platforms: |
+              - name: arduino:renesas_uno
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Compile examples
+        uses: arduino/compile-sketches@v1
+        with:
+          fqbn: ${{ matrix.board.fqbn }}
+          platforms: ${{ matrix.board.platforms }}
+          libraries: |
+            # Install the library from the local path.
+            - source-path: ./
+          sketch-paths: |
+            - examples/arduino_renesas/arduino_uno_r4_wifi
+          enable-deltas-report: true
+          sketches-report-path: ${{ env.SKETCHES_REPORTS_PATH }}
+
+      - name: Save sketches report as workflow artifact
+        uses: actions/upload-artifact@v4
+        with:
+          if-no-files-found: error
+          path: ${{ env.SKETCHES_REPORTS_PATH }}
+          name: sketches-report-${{ matrix.board.artifact-name-suffix }}

.github/workflows/main.yml

@@ -0,0 +1,171 @@
+name: CI
+on:
+  schedule:
+    - cron: '0 0 * * 5'
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+  release:
+    types: [ published, created, edited ]
+
+  # Allows you to run this workflow manually from the Actions tab
+  workflow_dispatch:
+
+# A workflow run is made up of one or more jobs that can run sequentially or in parallel
+jobs:
+  check_version_files:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: check version
+        run: |
+          $GITHUB_WORKSPACE/travis/version.py --check
+
+  prepare_example_json:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: generate examples
+        id: set-matrix
+        run: |
+          source $GITHUB_WORKSPACE/travis/common.sh
+          cd $GITHUB_WORKSPACE
+
+          echo -en "matrix=" >> $GITHUB_OUTPUT
+          echo -en "[" >> $GITHUB_OUTPUT
+
+          get_sketches_json_matrix arduino $GITHUB_WORKSPACE/examples/esp8266_pico esp8266 0.35.3 esp8266:esp8266:generic:xtal=80,vt=flash,exception=disabled,stacksmash=disabled,ssl=all,mmu=3232,non32xfer=fast,ResetMethod=nodemcu,CrystalFreq=26,FlashFreq=80,FlashMode=qio,eesz=4M2M,led=2,sdk=nonosdk_190703,ip=lm2f,dbg=Serial1,lvl=SSL,wipe=none,baud=115200 >> $GITHUB_OUTPUT
+          echo -en "," >> $GITHUB_OUTPUT
+
+          get_sketches_json_matrix arduino $GITHUB_WORKSPACE/examples/esp8266_pico esp8266 0.35.3 esp8266:esp8266:generic:xtal=80,vt=flash,exception=disabled,stacksmash=disabled,ssl=all,mmu=3232,non32xfer=fast,ResetMethod=nodemcu,CrystalFreq=26,FlashFreq=80,FlashMode=qio,eesz=4M2M,led=2,sdk=nonosdk_190703,ip=lm2f,dbg=Disabled,lvl=None____,wipe=none,baud=115200 >> $GITHUB_OUTPUT
+          echo -en "," >> $GITHUB_OUTPUT
+
+          get_sketches_json_matrix arduino $GITHUB_WORKSPACE/examples/esp32 esp32 0.35.3 esp32:esp32:esp32:FlashFreq=80 >> $GITHUB_OUTPUT
+
+          echo -en "]" >> $GITHUB_OUTPUT
+          echo >> $GITHUB_OUTPUT
+    outputs:
+      matrix: ${{ steps.set-matrix.outputs.matrix }}
+
+  prepare_ide:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        CLI_VERSION: [0.35.3]
+    env:
+      CLI_VERSION: ${{ matrix.CLI_VERSION }}
+      ARDUINO_DIRECTORIES_DATA: /home/runner/arduino_ide
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Get hash
+        id: get-hash
+        run: |
+          echo "hash=$(/bin/date -u "+%Y%m%d")-$(md5sum ".github/workflows/main.yml" | cut -d ' ' -f 1)" >> $GITHUB_OUTPUT
+        shell: bash
+
+      - uses: actions/cache@v4
+        id: cache_all
+        with:
+          path: |
+            /home/runner/arduino_ide
+            /home/runner/Arduino
+          key: ${{ runner.os }}-${{ steps.get-hash.outputs.hash }}-${{ matrix.CLI_VERSION }}-cli
+
+      - name: download IDE
+        if: steps.cache_all.outputs.cache-hit != 'true'
+        run: |
+          wget https://github.com/arduino/arduino-cli/releases/download/v${CLI_VERSION}/arduino-cli_${CLI_VERSION}_Linux_64bit.tar.gz -q
+          tar xf arduino-cli_${CLI_VERSION}_Linux_64bit.tar.gz
+          mkdir -p $ARDUINO_DIRECTORIES_DATA
+          mv arduino-cli $ARDUINO_DIRECTORIES_DATA/
+
+      - name: download ArduinoJson
+        if: steps.cache_all.outputs.cache-hit != 'true'
+        run: |
+          mkdir -p $HOME/Arduino/libraries
+          wget https://github.com/bblanchon/ArduinoJson/archive/6.x.zip -q
+          unzip 6.x.zip
+          mv ArduinoJson-6.x $HOME/Arduino/libraries/ArduinoJson
+
+      - name: download cores
+        if: steps.cache_all.outputs.cache-hit != 'true'
+        run: |
+          export PATH="$ARDUINO_DIRECTORIES_DATA:$PATH"
+          source $GITHUB_WORKSPACE/travis/common.sh
+          get_core_cli
+
+  build:
+    needs: [prepare_ide, prepare_example_json]
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        include: ${{ fromJson(needs.prepare_example_json.outputs.matrix) }}
+    env:
+      CPU: ${{ matrix.cpu }}
+      BOARD: ${{ matrix.board }}
+      CLI_VERSION: ${{ matrix.cliversion }}
+      SKETCH: ${{ matrix.sketch }}
+      ARDUINO_DIRECTORIES_DATA: /home/runner/arduino_ide
+
+    # Steps represent a sequence of tasks that will be executed as part of the job
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: install libgtk2.0-0
+        run: |
+          sudo apt-get install -y libgtk2.0-0
+
+      - name: Get hash
+        id: get-hash
+        run: |
+          echo "hash=$(/bin/date -u "+%Y%m%d")-$(md5sum ".github/workflows/main.yml" | cut -d ' ' -f 1)" >> $GITHUB_OUTPUT
+        shell: bash
+
+      - uses: actions/cache@v4
+        id: cache_all
+        with:
+          path: |
+            /home/runner/arduino_ide
+            /home/runner/Arduino
+          key: ${{ runner.os }}-${{ steps.get-hash.outputs.hash }}-${{ matrix.cliversion }}-cli
+
+      - name: install python serial
+        if: matrix.cpu == 'esp32'
+        run: |
+          sudo pip3 install pyserial
+          sudo pip install pyserial
+#          sudo apt install python-is-python3
+
+      - name: test IDE
+        run: |
+          export PATH="$ARDUINO_DIRECTORIES_DATA:$PATH"
+          which arduino-cli
+
+      - name: copy code
+        run: |
+          mkdir -p $HOME/Arduino/libraries/
+          cp -r $GITHUB_WORKSPACE $HOME/Arduino/libraries/arduinoWebSockets
+
+      - name: build example
+        timeout-minutes: 20
+        run: |
+          set -ex
+          export PATH="$HOME/arduino_ide:$PATH"
+          source $GITHUB_WORKSPACE/travis/common.sh
+          cd $GITHUB_WORKSPACE
+          build_sketch_cli "$SKETCH" "$BOARD"
+
+  done:
+    needs: [prepare_ide, prepare_example_json, build, check_version_files]
+    runs-on: ubuntu-latest
+    steps:
+      - name: Done
+        run: |
+          echo DONE

.travis.yml

@@ -10,8 +10,8 @@ os:
   - linux
 env:
   matrix:
-    - CPU="esp8266" BOARD="esp8266com:esp8266:generic:xtal=80" IDE_VERSION=1.6.5
-    - CPU="esp8266" BOARD="esp8266com:esp8266:generic:xtal=80,dbg=Serial1" IDE_VERSION=1.6.5
+    - CPU="esp8266" BOARD="esp8266com:esp8266:generic:xtal=80" IDE_VERSION=1.6.13
+    - CPU="esp8266" BOARD="esp8266com:esp8266:generic:xtal=80,dbg=Serial1" IDE_VERSION=1.6.13
     - CPU="esp8266" BOARD="esp8266com:esp8266:generic:xtal=80,eesz=1M,FlashMode=qio,FlashFreq=80" IDE_VERSION=1.8.13
     - CPU="esp32" BOARD="espressif:esp32:esp32:FlashFreq=80" IDE_VERSION=1.8.5
     - CPU="esp32" BOARD="espressif:esp32:esp32:FlashFreq=80" IDE_VERSION=1.8.9
@@ -43,9 +43,3 @@ notifications:
   email:
     on_success: change
     on_failure: change
-  webhooks:
-    urls:
-      - https://webhooks.gitter.im/e/1aa78fbe15080b0c2e37
-    on_success: change  # options: [always|never|change] default: always
-    on_failure: always  # options: [always|never|change] default: always
-    on_start: false     # default: false

README.md

@@ -1,4 +1,4 @@
-WebSocket Server and Client for Arduino [![Build Status](https://travis-ci.org/Links2004/arduinoWebSockets.svg?branch=master)](https://travis-ci.org/Links2004/arduinoWebSockets)
+WebSocket Server and Client for Arduino [![Build Status](https://github.com/Links2004/arduinoWebSockets/actions/workflows/main.yml/badge.svg?branch=master)](https://github.com/Links2004/arduinoWebSockets/actions?query=branch%3Amaster)
 ===========================================
 
 a WebSocket Server and Client for Arduino based on RFC6455.
@@ -26,15 +26,21 @@ a WebSocket Server and Client for Arduino based on RFC6455.
  - ESP8266 [Arduino for ESP8266](https://github.com/esp8266/Arduino/)
  - ESP32 [Arduino for ESP32](https://github.com/espressif/arduino-esp32)
  - ESP31B
+ - Raspberry Pi Pico W [Arduino for Pico](https://github.com/earlephilhower/arduino-pico)
  - Particle with STM32 ARM Cortex M3
  - ATmega328 with Ethernet Shield (ATmega branch)
  - ATmega328 with enc28j60 (ATmega branch)
  - ATmega2560 with Ethernet Shield (ATmega branch)
  - ATmega2560 with enc28j60 (ATmega branch)
+ - Arduino UNO [R4 WiFi](https://github.com/arduino/ArduinoCore-renesas)
+ - Arduino Nano 33 IoT, MKR WIFI 1010 (requires [WiFiNINA](https://github.com/arduino-libraries/WiFiNINA/) library)
+ - Seeeduino XIAO, Seeeduino Wio Terminal (requires [rpcWiFi](https://github.com/Seeed-Studio/Seeed_Arduino_rpcWiFi) library)
 
 ###### Note: ######
 
-  version 2.0 and up is not compatible with AVR/ATmega, check ATmega branch.
+  version 2.0.0 and up is not compatible with AVR/ATmega, check ATmega branch.
+
+  version 2.3.0 has API changes for the ESP8266 BareSSL (may brakes existing code)
 
   Arduino for AVR not supports std namespace of c++.
 
@@ -45,6 +51,16 @@ a WebSocket Server and Client for Arduino based on RFC6455.
    by running the device behind an SSL proxy. See [Nginx](examples/Nginx/esp8266.ssl.reverse.proxy.conf) for a
    sample Nginx server configuration file to enable this.
 
+### Root CA Cert Bundles for SSL/TLS connections ###
+
+Secure connections require the certificate of the server to be verified. One option is to provide a single certificate in the chain of trust. However, for flexibility and robustness, a certificate bundle is recommended. If a server changes the root CA from which it derives its certificates, this will not be a problem. With a single CA cert it will not connect.
+
+ - For [technical details](https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-reference/protocols/esp_crt_bundle.html)
+ - For a [PlatformIO setup](https://github.com/Duckle29/esp32-certBundle/)
+ - For an [example](examples/esp32/WebSocketClientSSLBundle/)
+
+Including a bundle with all CA certs will use 77.2 kB but this list can be reduced to 16.5 kB for the 41 most common. This results in 90% absolute usage coverage and 99% market share coverage according to [W3Techs](https://w3techs.com/technologies/overview/ssl_certificate). The bundle is inserted into the compiled firmware. The bundle is not loaded into RAM, only its index.
+
 ### ESP Async TCP ###
 
 This libary can run in Async TCP mode on the ESP.
@@ -60,37 +76,37 @@ The mode can be activated in the ```WebSockets.h``` (see WEBSOCKETS_NETWORK_TYPE
 ```c++
 void begin(const char *host, uint16_t port, const char * url = "/", const char * protocol = "arduino");
 void begin(String host, uint16_t port, String url = "/", String protocol = "arduino");
- ```
+```
  - `onEvent`: Callback to handle for websocket events
 
- ```c++
+```c++
  void onEvent(WebSocketClientEvent cbEvent);
- ```
+```
 
  - `WebSocketClientEvent`: Handler for websocket events
- ```c++
+```c++
  void (*WebSocketClientEvent)(WStype_t type, uint8_t * payload, size_t length)
- ```
+```
 Where `WStype_t type` is defined as:
-  ```c++
+```c++
   typedef enum {
       WStype_ERROR,
       WStype_DISCONNECTED,
       WStype_CONNECTED,
       WStype_TEXT,
       WStype_BIN,
-  	WStype_FRAGMENT_TEXT_START,
-  	WStype_FRAGMENT_BIN_START,
-  	WStype_FRAGMENT,
-  	WStype_FRAGMENT_FIN,
+      WStype_FRAGMENT_TEXT_START,
+      WStype_FRAGMENT_BIN_START,
+      WStype_FRAGMENT,
+      WStype_FRAGMENT_FIN,
+      WStype_PING,
+      WStype_PONG,
   } WStype_t;
-  ```
+```
 
 ### Issues ###
 Submit issues to: https://github.com/Links2004/arduinoWebSockets/issues
 
-[![Join the chat at https://gitter.im/Links2004/arduinoWebSockets](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/Links2004/arduinoWebSockets?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
-
 ### License and credits ###
 
 The library is licensed under [LGPLv2.1](https://github.com/Links2004/arduinoWebSockets/blob/master/LICENSE)

examples/arduino_renesas/arduino_uno_r4_wifi/arduino_uno_r4_wifi.ino

@@ -0,0 +1,109 @@
+#include <Arduino.h>
+#include <stdarg.h>
+#include <stdio.h>
+
+#include "WiFiS3.h"
+#include <WebSocketsClient.h>
+
+#define WIFI_SSID ""
+#define WIFI_PASS ""
+
+WebSocketsClient webSocket;
+ 
+void webSocketEvent(WStype_t type, uint8_t *payload, size_t length) {
+
+  switch (type) {
+    case WStype_DISCONNECTED:
+      Serial.println("[WSc] Disconnected!");
+      break;
+    case WStype_CONNECTED:
+      Serial.println("[WSc] Connected!");
+
+      // send message to server when Connected
+      webSocket.sendTXT("Connected");
+      break;
+    case WStype_TEXT:
+      Serial.print("[WSc] get text:");
+      Serial.println((char *)payload);
+
+      // send message to server
+      // webSocket.sendTXT("message here");
+      break;
+    case WStype_BIN:
+      // send data to server
+      // webSocket.sendBIN(payload, length);
+      break;
+    case WStype_ERROR:
+    case WStype_FRAGMENT_TEXT_START:
+    case WStype_FRAGMENT_BIN_START:
+    case WStype_FRAGMENT:
+    case WStype_FRAGMENT_FIN:
+      break;
+  }
+}
+
+void setup() {
+  Serial.begin(115200);
+
+  while (!Serial) {
+    ;  // wait for serial port to connect. Needed for native USB port only
+  }
+
+  Serial.println();
+  Serial.println();
+  Serial.println();
+
+  for (uint8_t t = 4; t > 0; t--) {
+    Serial.println("[SETUP] BOOT WAIT ...");
+    Serial.flush();
+    delay(1000);
+  }
+
+  // check for the WiFi module:
+  if (WiFi.status() == WL_NO_MODULE) {
+    Serial.println("Communication with WiFi module failed!");
+    // don't continue
+    while (true)
+      ;
+  }
+
+  String fv = WiFi.firmwareVersion();
+  if (fv < WIFI_FIRMWARE_LATEST_VERSION) {
+    Serial.println("Please upgrade the firmware");
+  }
+
+  Serial.println("[Wifi]: Connecting");
+
+  int status = WL_IDLE_STATUS;
+
+  // attempt to connect to WiFi network:
+  while (status != WL_CONNECTED) {
+    Serial.print("[Wifi]: Attempting to connect to SSID: ");
+    Serial.println(WIFI_SSID);
+
+    // Connect to WPA/WPA2 network. Change this line if using open or WEP network:
+    status = WiFi.begin(WIFI_SSID, WIFI_PASS);
+
+    delay(1000);
+  }
+
+  Serial.println("Connected!");
+
+  // print your board's IP address:
+  IPAddress ip = WiFi.localIP();
+  Serial.print("IP Address: ");
+  Serial.println(ip);
+
+  // server address, port and URL
+  webSocket.begin("192.168.0.123", 8011);
+
+  // event handler
+  webSocket.onEvent(webSocketEvent);
+
+  // try ever 5000 again if connection has failed
+  webSocket.setReconnectInterval(5000);
+}
+
+void loop() {
+  webSocket.loop();
+}

examples/arduino_wifinina/arduino_wifinina.ino

@@ -0,0 +1,100 @@
+#include <Arduino.h>
+#include <SPI.h>
+#include <WiFiNINA.h>
+#include <WebSocketsClient.h>
+
+#define WIFI_SSID ""
+#define WIFI_PASS ""
+
+int status = WL_IDLE_STATUS;
+WiFiClient client;
+WebSocketsClient webSocket;
+
+void webSocketEvent(WStype_t type, uint8_t *payload, size_t length) {
+
+  switch (type) {
+    case WStype_DISCONNECTED:
+      Serial.println("[WSc] Disconnected!");
+      break;
+    case WStype_CONNECTED:
+      Serial.println("[WSc] Connected!");
+
+      // send message to server when Connected
+      webSocket.sendTXT("Connected");
+      break;
+    case WStype_TEXT:
+      Serial.print("[WSc] get text:");
+      Serial.println((char *)payload);
+
+      // send message to server
+      // webSocket.sendTXT("message here");
+      break;
+    case WStype_BIN:
+      // send data to server
+      // webSocket.sendBIN(payload, length);
+      break;
+    case WStype_ERROR:
+    case WStype_FRAGMENT_TEXT_START:
+    case WStype_FRAGMENT_BIN_START:
+    case WStype_FRAGMENT:
+    case WStype_PING:
+    case WStype_PONG:
+    case WStype_FRAGMENT_FIN:
+      break;
+  }
+}
+
+void setup() {
+  Serial.begin(115200);
+
+  while (!Serial) {
+    ;  // wait for serial port to connect. Needed for native USB port only
+  }
+
+  Serial.println();
+  Serial.println();
+  Serial.println();
+
+  // check for the WiFi module:
+  if (WiFi.status() == WL_NO_MODULE) {
+    Serial.println("Communication with WiFi module failed!");
+    // don't continue
+    while (true);
+  }
+
+  String fv = WiFi.firmwareVersion();
+  if (fv < WIFI_FIRMWARE_LATEST_VERSION) {
+    Serial.println("Please upgrade the firmware");
+  }
+
+  // attempt to connect to WiFi network:
+  while (status != WL_CONNECTED) {
+    Serial.print("Attempting to connect to SSID: ");
+    Serial.println(WIFI_SSID);
+    // Connect to WPA/WPA2 network. Change this line if using open or WEP network:
+    status = WiFi.begin(WIFI_SSID, WIFI_PASS);
+
+    // wait 10 seconds for connection:
+    delay(10000);
+  }
+
+  Serial.println("Connected to WiFi");
+
+  // print your board's IP address:
+  IPAddress ip = WiFi.localIP();
+  Serial.print("IP Address: ");
+  Serial.println(ip);
+
+  // server address, port and URL
+  webSocket.begin("192.168.0.123", 8011);
+
+  // event handler
+  webSocket.onEvent(webSocketEvent);
+
+  // try ever 5000 again if connection has failed
+  webSocket.setReconnectInterval(5000);
+}
+
+void loop() {
+  webSocket.loop();
+}

examples/esp32/WebSocketClientSSLBundle/WebSocketClientSSLBundle.ino

@@ -0,0 +1,135 @@
+/*
+ * main.cpp
+ *
+ *  Created on: 15.06.2024
+ *
+ */
+
+#include <Arduino.h>
+#include <WiFi.h>
+#include <WiFiMulti.h>
+
+#include <WebSocketsClient.h>
+
+// Use the incbin library to embedd the cert binary
+// extern const uint8_t rootca_crt_bundle_start[] asm(
+//     "_binary_data_cert_x509_crt_bundle_bin_start");
+
+WiFiMulti wifiMulti;
+WebSocketsClient webSocket;
+
+#define USE_SERIAL Serial
+
+void setClock() {
+    configTime(0, 0, "pool.ntp.org", "time.nist.gov");
+
+    USE_SERIAL.print(F("Waiting for NTP time sync: "));
+    time_t nowSecs = time(nullptr);
+    while(nowSecs < 8 * 3600 * 2) {
+        delay(500);
+        USE_SERIAL.print(F("."));
+        yield();
+        nowSecs = time(nullptr);
+    }
+
+    USE_SERIAL.println();
+    struct tm timeinfo;
+    gmtime_r(&nowSecs, &timeinfo);
+    USE_SERIAL.print(F("Current time: "));
+    USE_SERIAL.print(asctime(&timeinfo));
+}
+
+void hexdump(const void * mem, uint32_t len, uint8_t cols = 16) {
+    const uint8_t * src = (const uint8_t *)mem;
+    USE_SERIAL.printf("\n[HEXDUMP] Address: 0x%08X len: 0x%X (%d)", (ptrdiff_t)src, len, len);
+    for(uint32_t i = 0; i < len; i++) {
+        if(i % cols == 0) {
+            USE_SERIAL.printf("\n[0x%08X] 0x%08X: ", (ptrdiff_t)src, i);
+        }
+        USE_SERIAL.printf("%02X ", *src);
+        src++;
+    }
+    USE_SERIAL.printf("\n");
+}
+
+void webSocketEvent(WStype_t type, uint8_t * payload, size_t length) {
+    switch(type) {
+        case WStype_DISCONNECTED:
+            USE_SERIAL.printf("[WSc] Disconnected!\n");
+            break;
+        case WStype_CONNECTED:
+            USE_SERIAL.printf("[WSc] Connected to url: %s\n", payload);
+
+            // send message to server when Connected
+            webSocket.sendTXT("Connected");
+            break;
+        case WStype_TEXT:
+            USE_SERIAL.printf("[WSc] get text: %s\n", payload);
+
+            // send message to server
+            // webSocket.sendTXT("message here");
+            break;
+        case WStype_BIN:
+            USE_SERIAL.printf("[WSc] get binary length: %u\n", length);
+            hexdump(payload, length);
+
+            // send data to server
+            // webSocket.sendBIN(payload, length);
+            break;
+        case WStype_ERROR:
+        case WStype_FRAGMENT_TEXT_START:
+        case WStype_FRAGMENT_BIN_START:
+        case WStype_FRAGMENT:
+        case WStype_FRAGMENT_FIN:
+            break;
+    }
+}
+
+void setup() {
+    USE_SERIAL.begin(115200);
+
+    USE_SERIAL.setDebugOutput(true);
+
+    USE_SERIAL.println();
+    USE_SERIAL.println();
+    USE_SERIAL.println();
+
+    for(uint8_t t = 4; t > 0; t--) {
+        USE_SERIAL.printf("[SETUP] BOOT WAIT %d...\n", t);
+        USE_SERIAL.flush();
+        delay(1000);
+    }
+
+    wifiMulti.addAP("SSID", "WIFI_PASSPHRASE");
+
+    // WiFi.disconnect();
+    while(wifiMulti.run() != WL_CONNECTED) {
+        delay(100);
+    }
+
+    setClock();
+
+    // server address, port and URL. This server can be flakey.
+    // Expected response: Request served by 0123456789abcdef
+    // webSocket.beginSslWithBundle("echo.websocket.org", 443, "/", rootca_crt_bundle_start, "");
+    // ESP32 3.0.4 or higher needs the size of the bundle
+    // webSocket.beginSslWithBundle("echo.websocket.org", 443, "/", rootca_crt_bundle_start, sizeof(rootca_crt_bundle_start), "");
+#if ESP_ARDUINO_VERSION >= ESP_ARDUINO_VERSION_VAL(3, 0, 4)
+    webSocket.beginSslWithBundle("echo.websocket.org", 443, "/", NULL, 0, "");
+#else
+    webSocket.beginSslWithBundle("echo.websocket.org", 443, "/", NULL, "");
+#endif
+
+    // event handler
+    webSocket.onEvent(webSocketEvent);
+
+    // use HTTP Basic Authorization this is optional enable if needed
+    // webSocket.setAuthorization("user", "Password");
+
+    // try ever 5000 again if connection has failed
+    webSocket.setReconnectInterval(5000);
+}
+
+void loop() {
+    webSocket.loop();
+}

examples/esp32/WebSocketClientSocketIOack/WebSocketClientSocketIOack.ino

@@ -0,0 +1,155 @@
+/*
+ * WebSocketClientSocketIOack.ino
+ *
+ *  Created on: 20.07.2019
+ *
+ */
+
+#include <Arduino.h>
+
+#include <WiFi.h>
+#include <WiFiMulti.h>
+#include <WiFiClientSecure.h>
+
+#include <ArduinoJson.h>
+
+#include <WebSocketsClient.h>
+#include <SocketIOclient.h>
+
+WiFiMulti WiFiMulti;
+SocketIOclient socketIO;
+
+#define USE_SERIAL Serial
+
+
+void socketIOEvent(socketIOmessageType_t type, uint8_t * payload, size_t length) {
+    switch(type) {
+        case sIOtype_DISCONNECT:
+            USE_SERIAL.printf("[IOc] Disconnected!\n");
+            break;
+        case sIOtype_CONNECT:
+            USE_SERIAL.printf("[IOc] Connected to url: %s\n", payload);
+
+            // join default namespace (no auto join in Socket.IO V3)
+            socketIO.send(sIOtype_CONNECT, "/");
+            break;
+        case sIOtype_EVENT:
+        {
+            char * sptr = NULL;
+            int id = strtol((char *)payload, &sptr, 10);
+            USE_SERIAL.printf("[IOc] get event: %s id: %d\n", payload, id);
+            if(id) {
+                payload = (uint8_t *)sptr;
+            }
+            DynamicJsonDocument doc(1024);
+            DeserializationError error = deserializeJson(doc, payload, length);
+            if(error) {
+                USE_SERIAL.print(F("deserializeJson() failed: "));
+                USE_SERIAL.println(error.c_str());
+                return;
+            }
+
+            String eventName = doc[0];
+            USE_SERIAL.printf("[IOc] event name: %s\n", eventName.c_str());
+
+            // Message Includes a ID for a ACK (callback)
+            if(id) {
+                // creat JSON message for Socket.IO (ack)
+                DynamicJsonDocument docOut(1024);
+                JsonArray array = docOut.to<JsonArray>();
+
+                // add payload (parameters) for the ack (callback function)
+                JsonObject param1 = array.createNestedObject();
+                param1["now"] = millis();
+
+                // JSON to String (serializion)
+                String output;
+                output += id;
+                serializeJson(docOut, output);
+
+                // Send event
+                socketIO.send(sIOtype_ACK, output);
+            }
+        }
+            break;
+        case sIOtype_ACK:
+            USE_SERIAL.printf("[IOc] get ack: %u\n", length);
+            break;
+        case sIOtype_ERROR:
+            USE_SERIAL.printf("[IOc] get error: %u\n", length);
+            break;
+        case sIOtype_BINARY_EVENT:
+            USE_SERIAL.printf("[IOc] get binary: %u\n", length);
+            break;
+        case sIOtype_BINARY_ACK:
+            USE_SERIAL.printf("[IOc] get binary ack: %u\n", length);
+            break;
+    }
+}
+
+void setup() {
+    //USE_SERIAL.begin(921600);
+    USE_SERIAL.begin(115200);
+
+    //Serial.setDebugOutput(true);
+    USE_SERIAL.setDebugOutput(true);
+
+    USE_SERIAL.println();
+    USE_SERIAL.println();
+    USE_SERIAL.println();
+
+      for(uint8_t t = 4; t > 0; t--) {
+          USE_SERIAL.printf("[SETUP] BOOT WAIT %d...\n", t);
+          USE_SERIAL.flush();
+          delay(1000);
+      }
+
+    WiFiMulti.addAP("SSID", "passpasspass");
+
+    //WiFi.disconnect();
+    while(WiFiMulti.run() != WL_CONNECTED) {
+        delay(100);
+    }
+
+    String ip = WiFi.localIP().toString();
+    USE_SERIAL.printf("[SETUP] WiFi Connected %s\n", ip.c_str());
+
+    // server address, port and URL
+    socketIO.begin("10.11.100.100", 8880, "/socket.io/?EIO=4");
+
+    // event handler
+    socketIO.onEvent(socketIOEvent);
+}
+
+unsigned long messageTimestamp = 0;
+void loop() {
+    socketIO.loop();
+
+    uint64_t now = millis();
+
+    if(now - messageTimestamp > 2000) {
+        messageTimestamp = now;
+
+        // creat JSON message for Socket.IO (event)
+        DynamicJsonDocument doc(1024);
+        JsonArray array = doc.to<JsonArray>();
+
+        // add evnet name
+        // Hint: socket.on('event_name', ....
+        array.add("event_name");
+
+        // add payload (parameters) for the event
+        JsonObject param1 = array.createNestedObject();
+        param1["now"] = (uint32_t) now;
+
+        // JSON to String (serializion)
+        String output;
+        serializeJson(doc, output);
+
+        // Send event
+        socketIO.sendEVENT(output);
+
+        // Print JSON for debugging
+        USE_SERIAL.println(output);
+    }
+}

examples/esp32_pio/WebSocketClientSSLBundle/.gitignore

@@ -0,0 +1,8 @@
+.pio
+.vscode/.browse.c_cpp.db*
+.vscode/c_cpp_properties.json
+.vscode/launch.json
+.vscode/ipch
+*secret*
+!*secrets.hpp.template
+*x509_crt_bundle.bin

examples/esp32_pio/WebSocketClientSSLBundle/cmn_crt_authorities.csv

@@ -0,0 +1,39 @@
+Owner,Common Name or Certificate Name
+Amazon Trust Services,Amazon Root CA 1
+Amazon Trust Services,Amazon Root CA 2
+Amazon Trust Services,Amazon Root CA 3
+Amazon Trust Services,Amazon Root CA 4
+Amazon Trust Services,Starfield Services Root Certificate Authority - G2
+DigiCert,Baltimore CyberTrust Root
+DigiCert,Cybertrust Global Root
+DigiCert,DigiCert Assured ID Root CA
+DigiCert,DigiCert Assured ID Root G2
+DigiCert,DigiCert Assured ID Root G3
+DigiCert,DigiCert Global Root CA
+DigiCert,DigiCert Global Root G2
+DigiCert,DigiCert Global Root G3
+DigiCert,DigiCert High Assurance EV Root CA
+DigiCert,DigiCert Trusted Root G4
+GlobalSign,GlobalSign ECC Root CA - R5
+GlobalSign,GlobalSign Root CA - R3
+GlobalSign,GlobalSign Root CA - R6
+GlobalSign,GlobalSign Root CA
+GoDaddy,Go Daddy Class 2 CA
+GoDaddy,Go Daddy Root Certificate Authority - G2
+GoDaddy,Starfield Class 2 CA
+GoDaddy,Starfield Root Certificate Authority - G2
+Google Trust Services LLC (GTS),GlobalSign ECC Root CA - R4
+Google Trust Services LLC (GTS),GlobalSign Root CA - R2
+Google Trust Services LLC (GTS),GTS Root R1
+Google Trust Services LLC (GTS),GTS Root R2
+Google Trust Services LLC (GTS),GTS Root R3
+Google Trust Services LLC (GTS),GTS Root R4
+"IdenTrust Services, LLC",DST Root CA X3
+"IdenTrust Services, LLC",IdenTrust Commercial Root CA 1
+"IdenTrust Services, LLC",IdenTrust Public Sector Root CA 1
+Sectigo,Comodo AAA Services root
+Sectigo,COMODO Certification Authority
+Sectigo,COMODO ECC Certification Authority
+Sectigo,COMODO RSA Certification Authority
+Sectigo,USERTrust ECC Certification Authority
+Sectigo,USERTrust RSA Certification Authority

examples/esp32_pio/WebSocketClientSSLBundle/gen_crt_bundle.py

@@ -0,0 +1,227 @@
+#!/usr/bin/env python
+#
+# ESP32 x509 certificate bundle generation utility
+#
+# Converts PEM and DER certificates to a custom bundle format which stores just the
+# subject name and public key to reduce space
+#
+# The bundle will have the format: number of certificates; crt 1 subject name length; crt 1 public key length;
+# crt 1 subject name; crt 1 public key; crt 2...
+#
+# Copyright 2018-2019 Espressif Systems (Shanghai) PTE LTD
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http:#www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from __future__ import with_statement
+
+import argparse
+import csv
+import os
+import re
+import struct
+import sys
+from io import open
+
+try:
+    from cryptography import x509
+    from cryptography.hazmat.backends import default_backend
+    from cryptography.hazmat.primitives import serialization
+except ImportError:
+    print('The cryptography package is not installed.'
+          'Please refer to the Get Started section of the ESP-IDF Programming Guide for '
+          'setting up the required packages.')
+    raise
+
+ca_bundle_bin_file = 'x509_crt_bundle'
+
+quiet = False
+
+
+def status(msg):
+    """ Print status message to stderr """
+    if not quiet:
+        critical(msg)
+
+
+def critical(msg):
+    """ Print critical message to stderr """
+    sys.stderr.write('gen_crt_bundle.py: ')
+    sys.stderr.write(msg)
+    sys.stderr.write('\n')
+
+
+class CertificateBundle:
+    def __init__(self):
+        self.certificates = []
+        self.compressed_crts = []
+
+        if os.path.isfile(ca_bundle_bin_file):
+            os.remove(ca_bundle_bin_file)
+
+    def add_from_path(self, crts_path):
+
+        found = False
+        for file_path in os.listdir(crts_path):
+            found |= self.add_from_file(os.path.join(crts_path, file_path))
+
+        if found is False:
+            raise InputError('No valid x509 certificates found in %s' % crts_path)
+
+    def add_from_file(self, file_path):
+        try:
+            if file_path.endswith('.pem'):
+                status('Parsing certificates from %s' % file_path)
+                with open(file_path, 'r', encoding='utf-8') as f:
+                    crt_str = f.read()
+                    self.add_from_pem(crt_str)
+                    return True
+
+            elif file_path.endswith('.der'):
+                status('Parsing certificates from %s' % file_path)
+                with open(file_path, 'rb') as f:
+                    crt_str = f.read()
+                    self.add_from_der(crt_str)
+                    return True
+
+        except ValueError:
+            critical('Invalid certificate in %s' % file_path)
+            raise InputError('Invalid certificate')
+
+        return False
+
+    def add_from_pem(self, crt_str):
+        """ A single PEM file may have multiple certificates """
+
+        crt = ''
+        count = 0
+        start = False
+
+        for strg in crt_str.splitlines(True):
+            if strg == '-----BEGIN CERTIFICATE-----\n' and start is False:
+                crt = ''
+                start = True
+            elif strg == '-----END CERTIFICATE-----\n' and start is True:
+                crt += strg + '\n'
+                start = False
+                self.certificates.append(x509.load_pem_x509_certificate(crt.encode(), default_backend()))
+                count += 1
+            if start is True:
+                crt += strg
+
+        if(count == 0):
+            raise InputError('No certificate found')
+
+        status('Successfully added %d certificates' % count)
+
+    def add_from_der(self, crt_str):
+        self.certificates.append(x509.load_der_x509_certificate(crt_str, default_backend()))
+        status('Successfully added 1 certificate')
+
+    def create_bundle(self):
+        # Sort certificates in order to do binary search when looking up certificates
+        self.certificates = sorted(self.certificates, key=lambda cert: cert.subject.public_bytes(default_backend()))
+
+        bundle = struct.pack('>H', len(self.certificates))
+
+        for crt in self.certificates:
+            """ Read the public key as DER format """
+            pub_key = crt.public_key()
+            pub_key_der = pub_key.public_bytes(serialization.Encoding.DER, serialization.PublicFormat.SubjectPublicKeyInfo)
+
+            """ Read the subject name as DER format """
+            sub_name_der = crt.subject.public_bytes(default_backend())
+
+            name_len = len(sub_name_der)
+            key_len = len(pub_key_der)
+            len_data = struct.pack('>HH', name_len, key_len)
+
+            bundle += len_data
+            bundle += sub_name_der
+            bundle += pub_key_der
+
+        return bundle
+
+    def add_with_filter(self, crts_path, filter_path):
+
+        filter_set = set()
+        with open(filter_path, 'r', encoding='utf-8') as f:
+            csv_reader = csv.reader(f, delimiter=',')
+
+            # Skip header
+            next(csv_reader)
+            for row in csv_reader:
+                filter_set.add(row[1])
+
+        status('Parsing certificates from %s' % crts_path)
+        crt_str = []
+        with open(crts_path, 'r', encoding='utf-8') as f:
+            crt_str = f.read()
+
+            # Split all certs into a list of (name, certificate string) tuples
+            pem_crts = re.findall(r'(^.+?)\n(=+\n[\s\S]+?END CERTIFICATE-----\n)', crt_str, re.MULTILINE)
+
+            filtered_crts = ''
+            for name, crt in pem_crts:
+                if name in filter_set:
+                    filtered_crts += crt
+
+        self.add_from_pem(filtered_crts)
+
+
+class InputError(RuntimeError):
+    def __init__(self, e):
+        super(InputError, self).__init__(e)
+
+
+def main():
+    global quiet
+
+    parser = argparse.ArgumentParser(description='ESP-IDF x509 certificate bundle utility')
+
+    parser.add_argument('--quiet', '-q', help="Don't print non-critical status messages to stderr", action='store_true')
+    parser.add_argument('--input', '-i', nargs='+', required=True,
+                        help='Paths to the custom certificate folders or files to parse, parses all .pem or .der files')
+    parser.add_argument('--filter', '-f', help='Path to CSV-file where the second columns contains the name of the certificates \
+                        that should be included from cacrt_all.pem')
+
+    args = parser.parse_args()
+
+    quiet = args.quiet
+
+    bundle = CertificateBundle()
+
+    for path in args.input:
+        if os.path.isfile(path):
+            if os.path.basename(path) == 'cacrt_all.pem' and args.filter:
+                bundle.add_with_filter(path, args.filter)
+            else:
+                bundle.add_from_file(path)
+        elif os.path.isdir(path):
+            bundle.add_from_path(path)
+        else:
+            raise InputError('Invalid --input=%s, is neither file nor folder' % args.input)
+
+    status('Successfully added %d certificates in total' % len(bundle.certificates))
+
+    crt_bundle = bundle.create_bundle()
+
+    with open(ca_bundle_bin_file, 'wb') as f:
+        f.write(crt_bundle)
+
+
+if __name__ == '__main__':
+    try:
+        main()
+    except InputError as e:
+        print(e)
+        sys.exit(2)

examples/esp32_pio/WebSocketClientSSLBundle/lib/README

@@ -0,0 +1,46 @@
+
+This directory is intended for project specific (private) libraries.
+PlatformIO will compile them to static libraries and link into executable file.
+
+The source code of each library should be placed in a an own separate directory
+("lib/your_library_name/[here are source files]").
+
+For example, see a structure of the following two libraries `Foo` and `Bar`:
+
+|--lib
+|  |
+|  |--Bar
+|  |  |--docs
+|  |  |--examples
+|  |  |--src
+|  |     |- Bar.c
+|  |     |- Bar.h
+|  |  |- library.json (optional, custom build options, etc) https://docs.platformio.org/page/librarymanager/config.html
+|  |
+|  |--Foo
+|  |  |- Foo.c
+|  |  |- Foo.h
+|  |
+|  |- README --> THIS FILE
+|
+|- platformio.ini
+|--src
+   |- main.c
+
+and a contents of `src/main.c`:
+```
+#include <Foo.h>
+#include <Bar.h>
+
+int main (void)
+{
+  ...
+}
+
+```
+
+PlatformIO Library Dependency Finder will find automatically dependent
+libraries scanning project source files.
+
+More information about PlatformIO Library Dependency Finder
+- https://docs.platformio.org/page/librarymanager/ldf.html

examples/esp32_pio/WebSocketClientSSLBundle/platformio.ini

@@ -0,0 +1,25 @@
+; PlatformIO Project Configuration File
+;
+;   Build options: build flags, source filter
+;   Upload options: custom upload port, speed and extra flags
+;   Library options: dependencies, extra library storages
+;   Advanced options: extra scripting
+;
+; Please visit documentation for the other options and examples
+; https://docs.platformio.org/page/projectconf.html
+
+[env:esp32dev]
+platform = espressif32
+board = esp32dev
+framework = arduino
+monitor_speed = 115200
+upload_speed = 921600
+build_flags = 
+    -DCORE_DEBUG_LEVEL=5
+lib_deps = ../../../src
+
+extra_scripts = 
+    pre:run_gen_script.py
+
+board_build.embed_txtfiles = 
+    data/cert/x509_crt_bundle.bin

examples/esp32_pio/WebSocketClientSSLBundle/readme.md

@@ -0,0 +1,12 @@
+This is a PlatformIO project that uses a modified WiFiClientSecure library (in `lib`) to 
+implement proper SSL support using root certificates as discussed 
+[here](https://github.com/espressif/arduino-esp32/issues/3646#issuecomment-648292677)
+
+It is based on the work by [meltdonw03](https://github.com/meltdown03) in that thread, and the
+[BasicHttpsClient example](https://github.com/espressif/arduino-esp32/blob/1.0.4/libraries/HTTPClient/examples/BasicHttpsClient/BasicHttpsClient.ino) from the arduino-esp32 project.
+
+Just copy `include/secrets.hpp.template` to `include/secrets.hpp` and fill in your WiFi details.
+Then it should be pretty much ready to go. The local WiFiClientSecure library should take priority.
+Debug is set to verbose, so you'll see a lot of noise, but there should also be this readme on success :)
+
+To get a current CA cert bundle download it from [curl's website](https://curl.se/docs/caextract.html).

examples/esp32_pio/WebSocketClientSSLBundle/run_gen_script.py

@@ -0,0 +1,6 @@
+Import("env")
+
+env.Execute("$PYTHONEXE -m pip install cryptography")
+env.Execute("$PYTHONEXE gen_crt_bundle.py --input cacrt_all.pem")
+env.Execute("mkdir -p data/cert")
+env.Execute("mv -f x509_crt_bundle data/cert/x509_crt_bundle.bin")

examples/esp32_pio/WebSocketClientSSLBundle/src/main.cpp

@@ -0,0 +1,127 @@
+/*
+ * main.cpp
+ *
+ *  Created on: 15.06.2024
+ *
+ */
+
+#include <Arduino.h>
+#include <WiFi.h>
+#include <WiFiMulti.h>
+
+#include <WebSocketsClient.h>
+
+extern const uint8_t rootca_crt_bundle_start[] asm(
+    "_binary_data_cert_x509_crt_bundle_bin_start");
+
+WiFiMulti wifiMulti;
+WebSocketsClient webSocket;
+
+#define USE_SERIAL Serial
+
+void setClock() {
+    configTime(0, 0, "pool.ntp.org", "time.nist.gov");
+
+    USE_SERIAL.print(F("Waiting for NTP time sync: "));
+    time_t nowSecs = time(nullptr);
+    while(nowSecs < 8 * 3600 * 2) {
+        delay(500);
+        USE_SERIAL.print(F("."));
+        yield();
+        nowSecs = time(nullptr);
+    }
+
+    USE_SERIAL.println();
+    struct tm timeinfo;
+    gmtime_r(&nowSecs, &timeinfo);
+    USE_SERIAL.print(F("Current time: "));
+    USE_SERIAL.print(asctime(&timeinfo));
+}
+
+void hexdump(const void * mem, uint32_t len, uint8_t cols = 16) {
+    const uint8_t * src = (const uint8_t *)mem;
+    USE_SERIAL.printf("\n[HEXDUMP] Address: 0x%08X len: 0x%X (%d)", (ptrdiff_t)src, len, len);
+    for(uint32_t i = 0; i < len; i++) {
+        if(i % cols == 0) {
+            USE_SERIAL.printf("\n[0x%08X] 0x%08X: ", (ptrdiff_t)src, i);
+        }
+        USE_SERIAL.printf("%02X ", *src);
+        src++;
+    }
+    USE_SERIAL.printf("\n");
+}
+
+void webSocketEvent(WStype_t type, uint8_t * payload, size_t length) {
+    switch(type) {
+        case WStype_DISCONNECTED:
+            USE_SERIAL.printf("[WSc] Disconnected!\n");
+            break;
+        case WStype_CONNECTED:
+            USE_SERIAL.printf("[WSc] Connected to url: %s\n", payload);
+
+            // send message to server when Connected
+            webSocket.sendTXT("Connected");
+            break;
+        case WStype_TEXT:
+            USE_SERIAL.printf("[WSc] get text: %s\n", payload);
+
+            // send message to server
+            // webSocket.sendTXT("message here");
+            break;
+        case WStype_BIN:
+            USE_SERIAL.printf("[WSc] get binary length: %u\n", length);
+            hexdump(payload, length);
+
+            // send data to server
+            // webSocket.sendBIN(payload, length);
+            break;
+        case WStype_ERROR:
+        case WStype_FRAGMENT_TEXT_START:
+        case WStype_FRAGMENT_BIN_START:
+        case WStype_FRAGMENT:
+        case WStype_FRAGMENT_FIN:
+            break;
+    }
+}
+
+void setup() {
+    USE_SERIAL.begin(115200);
+
+    USE_SERIAL.setDebugOutput(true);
+
+    USE_SERIAL.println();
+    USE_SERIAL.println();
+    USE_SERIAL.println();
+
+    for(uint8_t t = 4; t > 0; t--) {
+        USE_SERIAL.printf("[SETUP] BOOT WAIT %d...\n", t);
+        USE_SERIAL.flush();
+        delay(1000);
+    }
+
+    wifiMulti.addAP("SSID", "WIFI_PASSPHRASE");
+
+    // WiFi.disconnect();
+    while(wifiMulti.run() != WL_CONNECTED) {
+        delay(100);
+    }
+
+    setClock();
+
+    // server address, port and URL. This server can be flakey.
+    // Expected response: Request served by 0123456789abcdef
+    webSocket.beginSslWithBundle("echo.websocket.org", 443, "/", rootca_crt_bundle_start, "");
+
+    // event handler
+    webSocket.onEvent(webSocketEvent);
+
+    // use HTTP Basic Authorization this is optional enable if needed
+    // webSocket.setAuthorization("user", "Password");
+
+    // try ever 5000 again if connection has failed
+    webSocket.setReconnectInterval(5000);
+}
+
+void loop() {
+    webSocket.loop();
+}

examples/esp8266_pico/WebSocketClientOTA/README.md

@@ -0,0 +1,27 @@
+## Minimal example of WebsocketClientOTA and Python server
+
+Take this as small example, how achieve OTA update on ESP8266 and ESP32.
+
+Python server was wrote from train so take it only as bare example.
+It's working, but it's not mean to run in production.
+
+
+### Usage:
+
+Start server:
+```bash
+cd python_ota_server
+python3 -m venv .venv
+source .venv/bin/activate
+pip3 install -r requirements.txt
+python3 main.py
+```
+
+Flash ESP with example sketch and start it.
+
+Change version inside example sketch to higher and compile it and save it to bin file.
+
+Rename it to `mydevice-1.0.1-esp8266.bin` and place it inside new folder firmware (server create it).
+
+When the ESP connect to server, it check if version flashed is equal to fw in firmware folder. If higher FW version is present,
+start the flash process.

examples/esp8266_pico/WebSocketClientOTA/WebSocketClientOTA.ino

@@ -0,0 +1,264 @@
+/*
+ * WebSocketClientOTA.ino
+ *
+ *  Created on: 25.10.2021
+ *
+ */
+
+#include <Arduino.h>
+#include <ArduinoJson.h>
+
+#if defined(ESP8266)
+    #include <ESP8266WiFi.h>
+    #include <ESP8266WiFiMulti.h>
+    #include <ESP8266mDNS.h>
+    #include <Updater.h>
+    #include <Hash.h>
+
+    ESP8266WiFiMulti WiFiMulti;
+#elif defined(ESP32)
+    #include <WiFi.h>
+    #include <WiFiMulti.h>
+    #include "ESPmDNS.h"
+    #include <Update.h>
+
+    WiFiMulti WiFiMulti;
+#else
+    #error Unsupported device
+#endif
+
+#include <WiFiUdp.h>
+#include <WebSocketsClient.h>
+
+
+WebSocketsClient webSocket;
+
+#define USE_SERIAL Serial
+
+// Variables:
+// Settable:
+const char *version = "1.0.0";
+const char *name = "mydevice";
+
+// Others:
+#ifdef ESP8266
+	const char *chip = "esp8266";
+#endif
+#ifdef ESP32
+	const char *chip = "esp32";
+#endif
+
+uint32_t maxSketchSpace = 0;
+int SketchSize = 0;
+bool ws_conn = false;
+
+
+void greetings_(){
+	StaticJsonDocument<200> doc;
+	doc["type"] = "greetings";
+	doc["mac"] = WiFi.macAddress().c_str();
+	doc["ip"] = WiFi.localIP().toString().c_str();
+	doc["version"] = version;
+	doc["name"] = name;
+	doc["chip"] = chip;
+
+	char data[200];
+	serializeJson(doc, data);
+	webSocket.sendTXT(data);
+}
+
+void register_(){
+	StaticJsonDocument<200> doc;
+	doc["type"] = "register";
+    doc["mac"] = WiFi.macAddress().c_str();
+
+	char data[200];
+	serializeJson(doc, data);
+	webSocket.sendTXT(data);
+    ws_conn = true;
+}
+
+typedef void (*CALLBACK_FUNCTION)(JsonDocument &msg);
+
+typedef struct {
+   char  type[50];
+   CALLBACK_FUNCTION  func;
+} RESPONSES_STRUCT;
+
+void OTA_RESPONSES(JsonDocument &msg){
+    USE_SERIAL.print(F("[WSc] OTA mode: "));
+    String val = msg["value"];
+    if(val == "go") {
+        USE_SERIAL.print(F("go\n"));
+        SketchSize = int(msg["size"]);
+        maxSketchSpace = (ESP.getFreeSketchSpace() - 0x1000) & 0xFFFFF000;
+        USE_SERIAL.printf("[WSc] Max sketch size: %u\n", maxSketchSpace);
+        USE_SERIAL.printf("[WSc] Sketch size: %d\n", SketchSize);
+        USE_SERIAL.setDebugOutput(true);
+        if (!Update.begin(maxSketchSpace)) { //start with max available size
+            Update.printError(Serial);
+            ESP.restart();
+        }
+    } else if (val == "ok") {
+        USE_SERIAL.print(F("OK\n"));
+        register_();
+    } else {
+        USE_SERIAL.print(F("unknown value : "));
+        USE_SERIAL.print(val);
+        USE_SERIAL.print(F("\n"));
+    }
+}
+
+void STA_RESPONSES(JsonDocument &msg){
+    // Do something with message
+}
+
+// Count of responses handled by RESPONSES_STRUCT
+// increase increase if another response handler is added
+const int nrOfResponses = 2;
+
+RESPONSES_STRUCT responses[nrOfResponses] = {
+  {"ota",        OTA_RESPONSES},
+  {"state",      STA_RESPONSES},
+};
+
+void text(uint8_t * payload, size_t length){
+    // Convert message to something usable
+    char msgch[length];
+    for (unsigned int i = 0; i < length; i++)
+    {
+        USE_SERIAL.print((char)payload[i]);
+        msgch[i] = ((char)payload[i]);
+    }
+    msgch[length] = '\0';
+
+    // Parse Json
+    StaticJsonDocument<200> doc_in;
+    DeserializationError error = deserializeJson(doc_in, msgch);
+
+    if (error) {
+        USE_SERIAL.print(F("deserializeJson() failed: "));
+        USE_SERIAL.println(error.c_str());
+        return;
+    }
+
+    // Handle each TYPE of message
+    int b = 0;
+
+    String t = doc_in["type"];
+    for( b=0 ; b<nrOfResponses ; b++ )
+    {
+        if(t == responses[b].type) {
+            responses[b].func(doc_in);
+        }
+    }
+}
+
+void webSocketEvent(WStype_t type, uint8_t * payload, size_t length) {
+
+	switch(type) {
+		case WStype_DISCONNECTED:
+			USE_SERIAL.printf("[WSc] Disconnected!\n");
+			break;
+		case WStype_CONNECTED: {
+			USE_SERIAL.printf("[WSc] Connected to url: %s\n", payload);
+
+			// send message to server when Connected
+			// webSocket.sendTXT("Connected");
+			greetings_();
+		}
+			break;
+		case WStype_TEXT:
+			USE_SERIAL.printf("[WSc] get text: %s\n", payload);
+
+			// send message to server
+			// webSocket.sendTXT("message here");
+			text(payload, length);
+			break;
+		case WStype_BIN:
+			USE_SERIAL.printf("[WSc] get binary length: %u\n", length);
+			// hexdump(payload, length);
+	        if (Update.write(payload, length) != length) {
+                Update.printError(Serial);
+                ESP.restart();
+            }
+            yield();
+            SketchSize -= length;
+            USE_SERIAL.printf("[WSc] Sketch size left: %u\n", SketchSize);
+            if (SketchSize < 1){
+                if (Update.end(true)) { //true to set the size to the current progress
+                    USE_SERIAL.printf("Update Success: \nRebooting...\n");
+                    delay(5);
+                    yield();
+                    ESP.restart();
+                } else {
+                    Update.printError(USE_SERIAL);
+                    ESP.restart();
+                }
+                USE_SERIAL.setDebugOutput(false);
+            }
+
+			// send data to server
+			// webSocket.sendBIN(payload, length);
+			break;
+        case WStype_PING:
+            // pong will be send automatically
+            USE_SERIAL.printf("[WSc] get ping\n");
+            break;
+        case WStype_PONG:
+            // answer to a ping we send
+            USE_SERIAL.printf("[WSc] get pong\n");
+            break;
+    }
+
+}
+
+void setup() {
+	// USE_SERIAL.begin(921600);
+	USE_SERIAL.begin(115200);
+
+	//Serial.setDebugOutput(true);
+	USE_SERIAL.setDebugOutput(true);
+
+	USE_SERIAL.print(F("\nMAC: "));
+	USE_SERIAL.println(WiFi.macAddress());
+	USE_SERIAL.print(F("\nDevice: "));
+	USE_SERIAL.println(name);
+	USE_SERIAL.printf("\nVersion: %s\n", version);
+
+	for(uint8_t t = 4; t > 0; t--) {
+		USE_SERIAL.printf("[SETUP] BOOT WAIT %d...\n", t);
+		USE_SERIAL.flush();
+		delay(1000);
+	}
+
+	WiFiMulti.addAP("SSID", "PASS");
+
+	//WiFi.disconnect();
+	while(WiFiMulti.run() != WL_CONNECTED) {
+		delay(100);
+	}
+
+	// server address, port and URL
+	webSocket.begin("10.0.1.5", 8081, "/");
+
+	// event handler
+	webSocket.onEvent(webSocketEvent);
+
+	// use HTTP Basic Authorization this is optional remove if not needed
+	// webSocket.setAuthorization("USER", "PASS");
+
+	// try ever 5000 again if connection has failed
+	webSocket.setReconnectInterval(5000);
+
+  // start heartbeat (optional)
+  // ping server every 15000 ms
+  // expect pong from server within 3000 ms
+  // consider connection disconnected if pong is not received 2 times
+  webSocket.enableHeartbeat(15000, 3000, 2);
+
+}
+
+void loop() {
+	webSocket.loop();
+}

examples/esp8266_pico/WebSocketClientOTA/python_ota_server/main.py

@@ -0,0 +1,235 @@
+"""Minimal example of Python websocket server
+handling OTA updates for ESP32 amd ESP8266
+
+Check and upload of firmware works.
+Register and state function are jus for example.
+"""
+# pylint: disable=W0703,E1101
+import asyncio
+import copy
+import json
+import logging
+import subprocess
+import threading
+import time
+from os import listdir
+from os.path import join as join_pth
+from pathlib import Path
+
+import websockets
+from packaging import version
+
+# Logger settings
+logging.basicConfig(filename="ws_server.log")
+Logger = logging.getLogger('WS-OTA')
+Logger.addHandler(logging.StreamHandler())
+Logger.setLevel(logging.INFO)
+
+# Path to directory with FW
+fw_path = join_pth(Path().absolute(), "firmware")
+
+
+def create_path(path: str) -> None:
+    """Check if path exist or create it"""
+    Path(path).mkdir(parents=True, exist_ok=True)
+
+
+def shell(command):
+    """Handle execution of shell commands"""
+    with subprocess.Popen(command, shell=True,
+                          stdout=subprocess.PIPE,
+                          universal_newlines=True
+                          ) as process:
+        for stdout_line in iter(process.stdout.readline, ""):
+            Logger.debug(stdout_line)
+        process.stdout.close()
+        return_code = process.wait()
+        Logger.debug("Shell returned: %s", return_code)
+
+        return process.returncode
+    return None
+
+
+async def binary_send(websocket, fw_file):
+    """Read firmware file, divide it to chunks and send them"""
+    with open(fw_file, "rb") as binaryfile:
+
+        while True:
+            chunk = binaryfile.read(4096)
+            if not chunk:
+                break
+            try:
+                await websocket.send(chunk)
+            except Exception as exception:
+                Logger.exception(exception)
+                return False
+            asyncio.sleep(0.2)
+
+
+def version_checker(name, vdev, vapp):
+    """Parse and compare FW version"""
+
+    if version.parse(vdev) < version.parse(vapp):
+        Logger.info("Client(%s) version %s is smaller than %s: Go for update", name, vdev, vapp)
+        return True
+    Logger.info("Client(%s) version %s is greater or equal to %s: Not updating", name, vdev, vapp)
+    return False
+
+
+class WsOtaHandler (threading.Thread):
+    """Thread handling ota update
+
+    Running ota directly from message would kill WS
+    as message bus would timeout.
+    """
+    def __init__(self, name, message, websocket):
+        threading.Thread.__init__(self, daemon=True)
+        self.name = name
+        self.msg = message
+        self.websocket = websocket
+
+    def run(self, ):
+        try:
+            asyncio.run(self.start_())
+        except Exception as exception:
+            Logger.exception(exception)
+        finally:
+            pass
+
+    async def start_(self):
+        """Start _ota se asyncio future"""
+        msg_task = asyncio.ensure_future(
+            self._ota())
+
+        done, pending = await asyncio.wait(
+            [msg_task],
+            return_when=asyncio.FIRST_COMPLETED,
+        )
+        Logger.info("WS Ota Handler done: %s", done)
+        for task in pending:
+            task.cancel()
+
+    async def _ota(self):
+        """Check for new fw and update or pass"""
+        device_name = self.msg['name']
+        device_chip = self.msg['chip']
+        device_version = self.msg['version']
+        fw_version = ''
+        fw_name = ''
+        fw_device = ''
+
+        for filename in listdir(fw_path):
+            fw_info = filename.split("-")
+            fw_device = fw_info[0]
+            if fw_device == device_name:
+                fw_version = fw_info[1]
+                fw_name = filename
+                break
+
+        if not fw_version:
+            Logger.info("Client(%s): No fw found!", device_name)
+            msg = '{"type": "ota", "value":"ok"}'
+            await self.websocket.send(msg)
+            return
+
+        if not version_checker(device_name, device_version, fw_version):
+            return
+
+        fw_file = join_pth(fw_path, fw_name)
+        if device_chip == 'esp8266' and not fw_file.endswith('.gz'):
+            # We can compress fw to make it smaller for upload
+            fw_cpress = fw_file
+            fw_file = fw_cpress + ".gz"
+            cpress = f"gzip -9 {fw_cpress}"
+            cstate = shell(cpress)
+            if cstate:
+                Logger.error("Cannot compress firmware: %s", fw_name)
+                return
+
+        # Get size of fw
+        size = Path(fw_file).stat().st_size
+
+        # Request ota mode
+        msg = '{"type": "ota", "value":"go", "size":' + str(size) + '}'
+        await self.websocket.send(msg)
+
+        # send file by chunks trough websocket
+        await binary_send(self.websocket, fw_file)
+
+
+async def _register(websocket, message):
+    mac = message.get('mac')
+    name = message.get('name')
+    Logger.info("Client(%s) mac: %s", name, mac)
+    # Some code
+
+    response = {'type': 'registry', 'state': 'ok'}
+    await websocket.send(json.dumps(response))
+
+
+async def _state(websocket, message):
+    mac = message.get('mac')
+    name = message.get('name')
+    Logger.info("Client(%s) mac: %s", name, mac)
+    # Some code
+
+    response = {'type': 'state', 'state': 'ok'}
+    await websocket.send(json.dumps(response))
+
+
+async def _unhandled(websocket, msg):
+    Logger.info("Unhandled message from device: %s", str(msg))
+    response = {'type': 'response', 'state': 'nok'}
+    await websocket.send(json.dumps(response))
+
+
+async def _greetings(websocket, message):
+    WsOtaHandler('thread_ota', copy.deepcopy(message), websocket).start()
+
+
+async def message_received(websocket, message) -> None:
+    """Handle incoming messages
+
+    Check if message contain json and run waned function
+    """
+    switcher = {"greetings": _greetings,
+                "register":  _register,
+                "state":     _state
+                }
+
+    if message[0:1] == "{":
+        try:
+            msg_json = json.loads(message)
+        except Exception as exception:
+            Logger.error(exception)
+            return
+
+        type_ = msg_json.get('type')
+        name = msg_json.get('name')
+        func = switcher.get(type_, _unhandled)
+        Logger.debug("Client(%s)said: %s", name, type_)
+
+        try:
+            await func(websocket, msg_json)
+        except Exception as exception:
+            Logger.error(exception)
+
+
+# pylint: disable=W0613
+async def ws_server(websocket, path) -> None:
+    """Run in cycle and wait for new messages"""
+    async for message in websocket:
+        await message_received(websocket, message)
+
+
+async def main():
+    """Server starter
+
+    Normal user can bind only port numbers greater than 1024
+    """
+    async with websockets.serve(ws_server, "10.0.1.5", 8081):
+        await asyncio.Future()  # run forever
+
+
+create_path(fw_path)
+asyncio.run(main())

examples/esp8266_pico/WebSocketClientOTA/python_ota_server/requirements.txt

@@ -0,0 +1,2 @@
+packaging
+websockets

examples/esp8266_pico/WebSocketClientSSLWithCA/WebSocketClientSSLWithCA.ino

@@ -0,0 +1,103 @@
+/*
+ * WebSocketClientSSLWithCA.ino
+ *
+ *  Created on: 27.10.2019
+ *
+ *  note SSL is only possible with the ESP8266
+ *
+ */
+
+#include <Arduino.h>
+
+#include <ESP8266WiFi.h>
+#include <ESP8266WiFiMulti.h>
+
+#include <WebSocketsClient.h>
+
+ESP8266WiFiMulti WiFiMulti;
+WebSocketsClient webSocket;
+
+#define USE_SERIAL Serial1
+
+
+// Can be obtained with:
+//  openssl s_client -showcerts -connect echo.websocket.org:443 </dev/null
+const char ENDPOINT_CA_CERT[] PROGMEM = R"EOF(
+-----BEGIN CERTIFICATE-----
+MIIEkjCCA3qgAwIBAgIQCgFBQgAAAVOFc2oLheynCDANBgkqhkiG9w0BAQsFADA/MSQwIgYDVQQKExtEaWdpdGFsIFNpZ25hdHVyZSBUcnVzdCBDby4xFzAVBgNVBAMT
+DkRTVCBSb290IENBIFgzMB4XDTE2MDMxNzE2NDA0NloXDTIxMDMxNzE2NDA0NlowSjELMAkGA1UEBhMCVVMxFjAUBgNVBAoTDUxldCdzIEVuY3J5cHQxIzAhBgNVBAMT
+GkxldCdzIEVuY3J5cHQgQXV0aG9yaXR5IFgzMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAnNMM8FrlLke3cl03g7NoYzDq1zUmGSXhvb418XCSL7e4S0EF
+q6meNQhY7LEqxGiHC6PjdeTm86dicbp5gWAf15Gan/PQeGdxyGkOlZHP/uaZ6WA8SMx+yk13EiSdRxta67nsHjcAHJyse6cF6s5K671B5TaYucv9bTyWaN8jKkKQDIZ0
+Z8h/pZq4UmEUEz9l6YKHy9v6Dlb2honzhT+Xhq+w3Brvaw2VFn3EK6BlspkENnWAa6xK8xuQSXgvopZPKiAlKQTGdMDQMc2PMTiVFrqoM7hD8bEfwzB/onkxEz0tNvjj
+/PIzark5McWvxI0NHWQWM6r6hCm21AvA2H3DkwIDAQABo4IBfTCCAXkwEgYDVR0TAQH/BAgwBgEB/wIBADAOBgNVHQ8BAf8EBAMCAYYwfwYIKwYBBQUHAQEEczBxMDIG
+CCsGAQUFBzABhiZodHRwOi8vaXNyZy50cnVzdGlkLm9jc3AuaWRlbnRydXN0LmNvbTA7BggrBgEFBQcwAoYvaHR0cDovL2FwcHMuaWRlbnRydXN0LmNvbS9yb290cy9k
+c3Ryb290Y2F4My5wN2MwHwYDVR0jBBgwFoAUxKexpHsscfrb4UuQdf/EFWCFiRAwVAYDVR0gBE0wSzAIBgZngQwBAgEwPwYLKwYBBAGC3xMBAQEwMDAuBggrBgEFBQcC
+ARYiaHR0cDovL2Nwcy5yb290LXgxLmxldHNlbmNyeXB0Lm9yZzA8BgNVHR8ENTAzMDGgL6AthitodHRwOi8vY3JsLmlkZW50cnVzdC5jb20vRFNUUk9PVENBWDNDUkwu
+Y3JsMB0GA1UdDgQWBBSoSmpjBH3duubRObemRWXv86jsoTANBgkqhkiG9w0BAQsFAAOCAQEA3TPXEfNjWDjdGBX7CVW+dla5cEilaUcne8IkCJLxWh9KEik3JHRRHGJo
+uM2VcGfl96S8TihRzZvoroed6ti6WqEBmtzw3Wodatg+VyOeph4EYpr/1wXKtx8/wApIvJSwtmVi4MFU5aMqrSDE6ea73Mj2tcMyo5jMd6jmeWUHK8so/joWUoHOUgwu
+X4Po1QYz+3dszkDqMp4fklxBwXRsW10KXzPMTZ+sOPAveyxindmjkW8lGy+QsRlGPfZ+G6Z6h7mjem0Y+iWlkYcV4PIWL1iwBi8saCbGS5jN2p8M+X+Q7UNKEkROb3N6
+KOqkqm57TH2H3eDJAkSnh6/DNFu0Qg==
+-----END CERTIFICATE-----
+)EOF";
+
+void webSocketEvent(WStype_t type, uint8_t * payload, size_t length) {
+    switch(type) {
+        case WStype_DISCONNECTED:
+            USE_SERIAL.printf("[WSc] Disconnected!\n");
+            break;
+        case WStype_CONNECTED:
+            {
+                USE_SERIAL.printf("[WSc] Connected to url: %s\n",  payload);
+
+                // send message to server when Connected
+                webSocket.sendTXT("Connected");
+            }
+            break;
+        case WStype_TEXT:
+            USE_SERIAL.printf("[WSc] get text: %s\n", payload);
+
+            // send message to server
+            // webSocket.sendTXT("message here");
+            break;
+        case WStype_BIN:
+            USE_SERIAL.printf("[WSc] get binary length: %u\n", length);
+            hexdump(payload, length);
+
+            // send data to server
+            // webSocket.sendBIN(payload, length);
+            break;
+    }
+}
+
+void setup() {
+    USE_SERIAL.begin(115200);
+
+    USE_SERIAL.setDebugOutput(true);
+
+    USE_SERIAL.println();
+    USE_SERIAL.println();
+    USE_SERIAL.println();
+
+    for(uint8_t t = 4; t > 0; t--) {
+        USE_SERIAL.printf("[SETUP] BOOT WAIT %d...\n", t);
+        USE_SERIAL.flush();
+        delay(1000);
+    }
+
+    WiFiMulti.addAP("SSID", "passpasspass");
+
+    while(WiFiMulti.run() != WL_CONNECTED) {
+        delay(100);
+    }
+
+    //When using BearSSL, client certificate and private key can be set:
+    //webSocket.setSSLClientCertKey(clientCert, clientPrivateKey);
+    //clientCert and clientPrivateKey can be of types (const char *, const char *) , or of types (BearSSL::X509List, BearSSL::PrivateKey)
+    
+    webSocket.beginSslWithCA("echo.websocket.org", 443, "/", ENDPOINT_CA_CERT);
+    webSocket.onEvent(webSocketEvent);
+}
+
+void loop() {
+    webSocket.loop();
+}

examples/esp8266_pico/WebSocketClientSocketIO/WebSocketClientSocketIO.ino

@@ -29,6 +29,9 @@ void socketIOEvent(socketIOmessageType_t type, uint8_t * payload, size_t length)
             break;
         case sIOtype_CONNECT:
             USE_SERIAL.printf("[IOc] Connected to url: %s\n", payload);
+
+            // join default namespace (no auto join in Socket.IO V3)
+            socketIO.send(sIOtype_CONNECT, "/");
             break;
         case sIOtype_EVENT:
             USE_SERIAL.printf("[IOc] get event: %s\n", payload);
@@ -85,7 +88,7 @@ void setup() {
     USE_SERIAL.printf("[SETUP] WiFi Connected %s\n", ip.c_str());
 
     // server address, port and URL
-    socketIO.begin("10.11.100.100", 8880);
+    socketIO.begin("10.11.100.100", 8880, "/socket.io/?EIO=4");
 
     // event handler
     socketIO.onEvent(socketIOEvent);
@@ -103,7 +106,7 @@ void loop() {
         // creat JSON message for Socket.IO (event)
         DynamicJsonDocument doc(1024);
         JsonArray array = doc.to<JsonArray>();
-        
+
         // add evnet name
         // Hint: socket.on('event_name', ....
         array.add("event_name");
@@ -116,7 +119,7 @@ void loop() {
         String output;
         serializeJson(doc, output);
 
-        // Send event        
+        // Send event
         socketIO.sendEVENT(output);
 
         // Print JSON for debugging

examples/esp8266_pico/WebSocketClientSocketIOack/WebSocketClientSocketIOack.ino

@@ -30,6 +30,9 @@ void socketIOEvent(socketIOmessageType_t type, uint8_t * payload, size_t length)
             break;
         case sIOtype_CONNECT:
             USE_SERIAL.printf("[IOc] Connected to url: %s\n", payload);
+
+            // join default namespace (no auto join in Socket.IO V3)
+            socketIO.send(sIOtype_CONNECT, "/");
             break;
         case sIOtype_EVENT:
         {
@@ -46,7 +49,7 @@ void socketIOEvent(socketIOmessageType_t type, uint8_t * payload, size_t length)
                 USE_SERIAL.println(error.c_str());
                 return;
             }
-            
+
             String eventName = doc[0];
             USE_SERIAL.printf("[IOc] event name: %s\n", eventName.c_str());
 
@@ -55,7 +58,7 @@ void socketIOEvent(socketIOmessageType_t type, uint8_t * payload, size_t length)
                 // creat JSON message for Socket.IO (ack)
                 DynamicJsonDocument docOut(1024);
                 JsonArray array = docOut.to<JsonArray>();
-                
+
                 // add payload (parameters) for the ack (callback function)
                 JsonObject param1 = array.createNestedObject();
                 param1["now"] = millis();
@@ -65,7 +68,7 @@ void socketIOEvent(socketIOmessageType_t type, uint8_t * payload, size_t length)
                 output += id;
                 serializeJson(docOut, output);
 
-                // Send event        
+                // Send event
                 socketIO.send(sIOtype_ACK, output);
             }
         }
@@ -122,7 +125,7 @@ void setup() {
     USE_SERIAL.printf("[SETUP] WiFi Connected %s\n", ip.c_str());
 
     // server address, port and URL
-    socketIO.begin("10.11.100.100", 8880);
+    socketIO.begin("10.11.100.100", 8880, "/socket.io/?EIO=4");
 
     // event handler
     socketIO.onEvent(socketIOEvent);
@@ -140,7 +143,7 @@ void loop() {
         // creat JSON message for Socket.IO (event)
         DynamicJsonDocument doc(1024);
         JsonArray array = doc.to<JsonArray>();
-        
+
         // add evnet name
         // Hint: socket.on('event_name', ....
         array.add("event_name");
@@ -153,7 +156,7 @@ void loop() {
         String output;
         serializeJson(doc, output);
 
-        // Send event        
+        // Send event
         socketIO.sendEVENT(output);
 
         // Print JSON for debugging

examples/esp8266_pico/WebSocketServerHooked/WebSocketServerHooked.ino

@@ -0,0 +1,103 @@
+/*
+ * WebSocketServerHooked.ino
+ *
+ *  Created on: 22.05.2015
+ *  Hooked on:  28.10.2020
+ *
+ */
+
+#include <Arduino.h>
+
+#include <ESP8266WiFi.h>
+#include <ESP8266WiFiMulti.h>
+#include <WebSockets4WebServer.h>
+#include <Hash.h>
+#include <ESP8266mDNS.h>
+
+ESP8266WiFiMulti WiFiMulti;
+
+ESP8266WebServer server(80);
+WebSockets4WebServer webSocket;
+
+#define USE_SERIAL Serial
+
+void webSocketEvent(uint8_t num, WStype_t type, uint8_t * payload, size_t length) {
+
+    switch(type) {
+        case WStype_DISCONNECTED:
+            USE_SERIAL.printf("[%u] Disconnected!\n", num);
+            break;
+        case WStype_CONNECTED:
+            {
+                IPAddress ip = webSocket.remoteIP(num);
+                USE_SERIAL.printf("[%u] Connected from %d.%d.%d.%d url: %s\n", num, ip[0], ip[1], ip[2], ip[3], payload);
+
+				// send message to client
+				webSocket.sendTXT(num, "Connected");
+            }
+            break;
+        case WStype_TEXT:
+            USE_SERIAL.printf("[%u] get Text: %s\n", num, payload);
+
+            // send message to client
+            // webSocket.sendTXT(num, "message here");
+
+            // send data to all connected clients
+            // webSocket.broadcastTXT("message here");
+            break;
+        case WStype_BIN:
+            USE_SERIAL.printf("[%u] get binary length: %u\n", num, length);
+            hexdump(payload, length);
+
+            // send message to client
+            // webSocket.sendBIN(num, payload, length);
+            break;
+    }
+
+}
+
+void setup() {
+    // USE_SERIAL.begin(921600);
+    USE_SERIAL.begin(115200);
+
+    //Serial.setDebugOutput(true);
+    USE_SERIAL.setDebugOutput(true);
+
+    USE_SERIAL.println();
+    USE_SERIAL.println();
+    USE_SERIAL.println();
+
+    for(uint8_t t = 4; t > 0; t--) {
+        USE_SERIAL.printf("[SETUP] BOOT WAIT %d...\n", t);
+        USE_SERIAL.flush();
+        delay(1000);
+    }
+
+    WiFiMulti.addAP("SSID", "passpasspass");
+
+    while(WiFiMulti.run() != WL_CONNECTED) {
+        delay(100);
+    }
+
+    server.on("/", []() {
+        server.send(200, "text/plain", "I am a regular webserver on port 80!\r\n");
+        server.send(200, "text/plain", "I am also a websocket server on '/ws' on the same port 80\r\n");
+    });
+
+    server.addHook(webSocket.hookForWebserver("/ws", webSocketEvent));
+
+    server.begin();
+    Serial.println("HTTP server started on port 80");
+    Serial.println("WebSocket server started on the same port");
+    Serial.printf("my network address is either 'arduinoWebsockets.local' (mDNS) or '%s'\n", WiFi.localIP().toString().c_str());
+
+    if (!MDNS.begin("arduinoWebsockets")) {
+        Serial.println("Error setting up MDNS responder!");
+    }
+}
+
+void loop() {
+    server.handleClient();
+    webSocket.loop();
+    MDNS.update();
+}

examples/esp8266_pico/WebSocketServerHooked/emu

@@ -0,0 +1,20 @@
+#!/bin/sh
+
+# linux script to compile&run arduinoWebSockets in a mock environment
+
+if [ -z "$ESP8266ARDUINO" ]; then
+    echo "please set ESP8266ARDUINO env-var to where esp8266/arduino sits"
+    exit 1
+fi
+
+set -e
+
+where=$(pwd)
+
+cd $ESP8266ARDUINO/tests/host/
+
+make -j FORCE32=0 \
+    ULIBDIRS=../../libraries/Hash/:~/dev/proj/arduino/libraries/arduinoWebSockets \
+    ${where}/WebSocketServerHooked
+
+valgrind ./bin/WebSocketServerHooked/WebSocketServerHooked -b "$@"

examples/esp8266_pico/WebSocketServerHooked/ws-testclient.py

@@ -0,0 +1,45 @@
+#!/usr/bin/env python3
+
+# python websocket client to test with
+# emulator: server is at ws://127.0.0.1:9080/ws
+# esp8266:  server is at ws:///ws
+# (uncomment the right line below)
+
+#uri = "ws://127.0.0.1:9080/ws"
+uri = "ws://arduinoWebsockets.local/ws"
+
+import websocket
+try:
+    import thread
+except ImportError:
+    import _thread as thread
+import time
+
+def on_message(ws, message):
+    print("message");
+    print(message)
+
+def on_error(ws, error):
+    print("error")
+    print(error)
+
+def on_close(ws):
+    print("### closed ###")
+
+def on_open(ws):
+    print("opened")
+    def run(*args):
+        for i in range(3):
+            time.sleep(1)
+            ws.send("Hello %d" % i)
+        time.sleep(1)
+        ws.close()
+        print("thread terminating...")
+    thread.start_new_thread(run, ())
+
+
+if __name__ == "__main__":
+    websocket.enableTrace(True)
+    ws = websocket.WebSocketApp(uri, on_message = on_message, on_error = on_error, on_close = on_close)
+    ws.on_open = on_open
+    ws.run_forever()

examples/seeed-studio/xio-wio-terminal/WebSocketClient/WebSocketClient.ino

@@ -0,0 +1,105 @@
+/*
+ * WebSocketClient.ino
+ *
+ *  Created on: 10.08.2024
+ *
+ */
+
+#include <Arduino.h>
+#include <rpcWiFi.h>
+#include <WiFiMulti.h>
+#include <WebSocketsClient.h>
+
+WebSocketsClient webSocket;
+WiFiMulti wifiMulti;
+
+#define USE_SERIAL Serial
+
+void hexdump(const void *mem, uint32_t len, uint8_t cols = 16) {
+	const uint8_t* src = (const uint8_t*) mem;
+	USE_SERIAL.printf("\n[HEXDUMP] Address: 0x%08X len: 0x%X (%d)", (ptrdiff_t)src, len, len);
+	for(uint32_t i = 0; i < len; i++) {
+		if(i % cols == 0) {
+			USE_SERIAL.printf("\n[0x%08X] 0x%08X: ", (ptrdiff_t)src, i);
+		}
+		USE_SERIAL.printf("%02X ", *src);
+		src++;
+	}
+	USE_SERIAL.printf("\n");
+}
+
+void webSocketEvent(WStype_t type, uint8_t * payload, size_t length) {
+
+	switch(type) {
+		case WStype_DISCONNECTED:
+			USE_SERIAL.printf("[WSc] Disconnected!\n");
+			break;
+		case WStype_CONNECTED:
+			USE_SERIAL.printf("[WSc] Connected to url: %s\n", payload);
+
+			// send message to server when Connected
+			webSocket.sendTXT("Connected");
+			break;
+		case WStype_TEXT:
+			USE_SERIAL.printf("[WSc] get text: %s\n", payload);
+
+			// send message to server
+			// webSocket.sendTXT("message here");
+			break;
+		case WStype_BIN:
+			USE_SERIAL.printf("[WSc] get binary length: %u\n", length);
+			hexdump(payload, length);
+
+			// send data to server
+			// webSocket.sendBIN(payload, length);
+			break;
+		case WStype_ERROR:			
+		case WStype_FRAGMENT_TEXT_START:
+		case WStype_FRAGMENT_BIN_START:
+		case WStype_FRAGMENT:
+    case WStype_PONG:
+    case WStype_PING:
+		case WStype_FRAGMENT_FIN:
+			break;
+	}
+
+}
+
+void setup() {
+	// USE_SERIAL.begin(921600);
+	USE_SERIAL.begin(115200);
+	
+	USE_SERIAL.println();
+	USE_SERIAL.println();
+	USE_SERIAL.println();
+
+	for(uint8_t t = 4; t > 0; t--) {
+		USE_SERIAL.printf("[SETUP] BOOT WAIT %d...\n", t);
+		USE_SERIAL.flush();
+		delay(1000);
+	}
+
+	wifiMulti.addAP("SSID", "passpasspass");
+
+	//WiFi.disconnect();
+	while(wifiMulti.run() != WL_CONNECTED) {
+		delay(100);
+	}
+
+	// server address, port and URL
+	webSocket.begin("192.168.0.123", 81, "/");
+
+	// event handler
+	webSocket.onEvent(webSocketEvent);
+
+	// use HTTP Basic Authorization this is optional remove if not needed
+	webSocket.setAuthorization("user", "Password");
+
+	// try ever 5000 again if connection has failed
+	webSocket.setReconnectInterval(5000);
+
+}
+
+void loop() {
+	webSocket.loop();
+}

library.json

@@ -1,25 +1,25 @@
 {
-    "name": "WebSockets",
-    "description": "WebSocket Server and Client for Arduino based on RFC6455",
-    "keywords": "wifi, http, web, server, client, websocket",
     "authors": [
         {
+            "maintainer": true,
             "name": "Markus Sattler",
-            "url": "https://github.com/Links2004",
-            "maintainer": true
+            "url": "https://github.com/Links2004"
         }
     ],
-    "repository": {
-        "type": "git",
-        "url": "https://github.com/Links2004/arduinoWebSockets.git"
-    },
-    "version": "2.2.1",
-    "license": "LGPL-2.1",
+    "description": "WebSocket Server and Client for Arduino based on RFC6455",
     "export": {
         "exclude": [
             "tests"
         ]
     },
     "frameworks": "arduino",
-    "platforms": "atmelavr, espressif8266, espressif32"
-}
+    "keywords": "wifi, http, web, server, client, websocket",
+    "license": "LGPL-2.1",
+    "name": "WebSockets",
+    "platforms": "*",
+    "repository": {
+        "type": "git",
+        "url": "https://github.com/Links2004/arduinoWebSockets.git"
+    },
+    "version": "2.6.0"
+}

library.properties

@@ -1,5 +1,5 @@
 name=WebSockets
-version=2.2.1
+version=2.6.0
 author=Markus Sattler
 maintainer=Markus Sattler
 sentence=WebSockets for Arduino (Server + Client)

src/SocketIOclient.cpp

@@ -15,14 +15,62 @@ SocketIOclient::SocketIOclient() {
 SocketIOclient::~SocketIOclient() {
 }
 
-void SocketIOclient::begin(const char * host, uint16_t port, const char * url, const char * protocol) {
+void SocketIOclient::begin(const char * host, uint16_t port, const char * url, const char * protocol, uint32_t pingInterval, uint32_t pongTimeout, uint8_t disconnectTimeoutCount) {
     WebSocketsClient::beginSocketIO(host, port, url, protocol);
-    WebSocketsClient::enableHeartbeat(60 * 1000, 90 * 1000, 5);
+    WebSocketsClient::enableHeartbeat(pingInterval, pongTimeout, disconnectTimeoutCount);
+    initClient();
 }
 
-void SocketIOclient::begin(String host, uint16_t port, String url, String protocol) {
+void SocketIOclient::begin(String host, uint16_t port, String url, String protocol, uint32_t pingInterval, uint32_t pongTimeout, uint8_t disconnectTimeoutCount) {
     WebSocketsClient::beginSocketIO(host, port, url, protocol);
-    WebSocketsClient::enableHeartbeat(60 * 1000, 90 * 1000, 5);
+    WebSocketsClient::enableHeartbeat(pingInterval, pongTimeout, disconnectTimeoutCount);
+    initClient();
+}
+#if defined(HAS_SSL)
+void SocketIOclient::beginSSL(const char * host, uint16_t port, const char * url, const char * protocol, uint32_t pingInterval, uint32_t pongTimeout, uint8_t disconnectTimeoutCount) {
+    WebSocketsClient::beginSocketIOSSL(host, port, url, protocol);
+    WebSocketsClient::enableHeartbeat(pingInterval, pongTimeout, disconnectTimeoutCount);
+    initClient();
+}
+
+void SocketIOclient::beginSSL(String host, uint16_t port, String url, String protocol, uint32_t pingInterval, uint32_t pongTimeout, uint8_t disconnectTimeoutCount) {
+    WebSocketsClient::beginSocketIOSSL(host, port, url, protocol);
+    WebSocketsClient::enableHeartbeat(pingInterval, pongTimeout, disconnectTimeoutCount);
+    initClient();
+}
+#if defined(SSL_BARESSL)
+void SocketIOclient::beginSSLWithCA(const char * host, uint16_t port, const char * url, const char * CA_cert, const char * protocol, uint32_t pingInterval, uint32_t pongTimeout, uint8_t disconnectTimeoutCount) {
+    WebSocketsClient::beginSocketIOSSLWithCA(host, port, url, CA_cert, protocol);
+    WebSocketsClient::enableHeartbeat(pingInterval, pongTimeout, disconnectTimeoutCount);
+    initClient();
+}
+
+void SocketIOclient::beginSSLWithCA(const char * host, uint16_t port, const char * url, BearSSL::X509List * CA_cert, const char * protocol, uint32_t pingInterval, uint32_t pongTimeout, uint8_t disconnectTimeoutCount) {
+    WebSocketsClient::beginSocketIOSSLWithCA(host, port, url, CA_cert, protocol);
+    WebSocketsClient::enableHeartbeat(pingInterval, pongTimeout, disconnectTimeoutCount);
+    initClient();
+}
+
+void SocketIOclient::setSSLClientCertKey(const char * clientCert, const char * clientPrivateKey) {
+    WebSocketsClient::setSSLClientCertKey(clientCert, clientPrivateKey);
+}
+
+void SocketIOclient::setSSLClientCertKey(BearSSL::X509List * clientCert, BearSSL::PrivateKey * clientPrivateKey) {
+    WebSocketsClient::setSSLClientCertKey(clientCert, clientPrivateKey);
+}
+
+#endif
+#endif
+
+void SocketIOclient::configureEIOping(bool disableHeartbeat) {
+    _disableHeartbeat = disableHeartbeat;
+}
+
+void SocketIOclient::initClient(void) {
+    if(_client.cUrl.indexOf("EIO=4") != -1) {
+        DEBUG_WEBSOCKETS("[wsIOc] found EIO=4 disable EIO ping on client\n");
+        configureEIOping(true);
+    }
 }
 
 /**
@@ -37,6 +85,18 @@ bool SocketIOclient::isConnected(void) {
     return WebSocketsClient::isConnected();
 }
 
+void SocketIOclient::setExtraHeaders(const char * extraHeaders) {
+    return WebSocketsClient::setExtraHeaders(extraHeaders);
+}
+
+void SocketIOclient::setReconnectInterval(unsigned long time) {
+    return WebSocketsClient::setReconnectInterval(time);
+}
+
+void SocketIOclient::disconnect(void) {
+    WebSocketsClient::disconnect();
+}
+
 /**
  * send text data to client
  * @param num uint8_t client id
@@ -51,7 +111,7 @@ bool SocketIOclient::send(socketIOmessageType_t type, uint8_t * payload, size_t
     if(length == 0) {
         length = strlen((const char *)payload);
     }
-    if(clientIsConnected(&_client)) {
+    if(clientIsConnected(&_client) && _client.status == WSC_CONNECTED) {
         if(!headerToPayload) {
             // webSocket Header
             ret = WebSocketsClient::sendFrameHeader(&_client, WSop_text, length + 2, true);
@@ -118,8 +178,8 @@ bool SocketIOclient::sendEVENT(String & payload) {
 void SocketIOclient::loop(void) {
     WebSocketsClient::loop();
     unsigned long t = millis();
-    if((t - _lastConnectionFail) > EIO_HEARTBEAT_INTERVAL) {
-        _lastConnectionFail = t;
+    if(!_disableHeartbeat && (t - _lastHeartbeat) > EIO_HEARTBEAT_INTERVAL) {
+        _lastHeartbeat = t;
         DEBUG_WEBSOCKETS("[wsIOc] send ping\n");
         WebSocketsClient::sendTXT(eIOtype_PING);
     }
@@ -135,6 +195,7 @@ void SocketIOclient::handleCbEvent(WStype_t type, uint8_t * payload, size_t leng
             DEBUG_WEBSOCKETS("[wsIOc] Connected to url: %s\n", payload);
             // send message to server when Connected
             // Engine.io upgrade confirmation message (required)
+            WebSocketsClient::sendTXT("2probe");
             WebSocketsClient::sendTXT(eIOtype_UPGRADE);
             runIOCbEvent(sIOtype_CONNECT, payload, length);
         } break;
@@ -165,6 +226,8 @@ void SocketIOclient::handleCbEvent(WStype_t type, uint8_t * payload, size_t leng
                             DEBUG_WEBSOCKETS("[wsIOc] get event (%d): %s\n", lData, data);
                             break;
                         case sIOtype_CONNECT:
+                            DEBUG_WEBSOCKETS("[wsIOc] connected (%d): %s\n", lData, data);
+                            return;
                         case sIOtype_DISCONNECT:
                         case sIOtype_ACK:
                         case sIOtype_ERROR:
@@ -198,4 +261,4 @@ void SocketIOclient::handleCbEvent(WStype_t type, uint8_t * payload, size_t leng
         case WStype_PONG:
             break;
     }
-}
+}

src/SocketIOclient.h

@@ -9,6 +9,7 @@
 #define SOCKETIOCLIENT_H_
 
 #include "WebSockets.h"
+#include "WebSocketsClient.h"
 
 #define EIO_HEARTBEAT_INTERVAL 20000
 
@@ -46,12 +47,25 @@ class SocketIOclient : protected WebSocketsClient {
     SocketIOclient(void);
     virtual ~SocketIOclient(void);
 
-    void begin(const char * host, uint16_t port, const char * url = "/socket.io/?EIO=3", const char * protocol = "arduino");
-    void begin(String host, uint16_t port, String url = "/socket.io/?EIO=3", String protocol = "arduino");
+    void begin(const char * host, uint16_t port, const char * url = "/socket.io/?EIO=3", const char * protocol = "arduino", uint32_t pingInterval = 60 * 1000, uint32_t pongTimeout = 90 * 1000, uint8_t disconnectTimeoutCount = 5);
+    void begin(String host, uint16_t port, String url = "/socket.io/?EIO=3", String protocol = "arduino", uint32_t pingInterval = 60 * 1000, uint32_t pongTimeout = 90 * 1000, uint8_t disconnectTimeoutCount = 5);
 
+#ifdef HAS_SSL
+    void beginSSL(const char * host, uint16_t port, const char * url = "/socket.io/?EIO=3", const char * protocol = "arduino", uint32_t pingInterval = 60 * 1000, uint32_t pongTimeout = 90 * 1000, uint8_t disconnectTimeoutCount = 5);
+    void beginSSL(String host, uint16_t port, String url = "/socket.io/?EIO=3", String protocol = "arduino", uint32_t pingInterval = 60 * 1000, uint32_t pongTimeout = 90 * 1000, uint8_t disconnectTimeoutCount = 5);
+#ifndef SSL_AXTLS
+    void beginSSLWithCA(const char * host, uint16_t port, const char * url = "/socket.io/?EIO=3", const char * CA_cert = NULL, const char * protocol = "arduino", uint32_t pingInterval = 60 * 1000, uint32_t pongTimeout = 90 * 1000, uint8_t disconnectTimeoutCount = 5);
+    void setSSLClientCertKey(const char * clientCert = NULL, const char * clientPrivateKey = NULL);
+    #if defined(SSL_BARESSL)
+    void beginSSLWithCA(const char * host, uint16_t port, const char * url = "/socket.io/?EIO=3", BearSSL::X509List * CA_cert = NULL, const char * protocol = "arduino", uint32_t pingInterval = 60 * 1000, uint32_t pongTimeout = 90 * 1000, uint8_t disconnectTimeoutCount = 5);
+    void setSSLClientCertKey(BearSSL::X509List * clientCert = NULL, BearSSL::PrivateKey * clientPrivateKey = NULL);
+    #endif
+#endif
+#endif
     bool isConnected(void);
 
     void onEvent(SocketIOclientEvent cbEvent);
+    void disconnect(void);
 
     bool sendEVENT(uint8_t * payload, size_t length = 0, bool headerToPayload = false);
     bool sendEVENT(const uint8_t * payload, size_t length = 0);
@@ -65,9 +79,15 @@ class SocketIOclient : protected WebSocketsClient {
     bool send(socketIOmessageType_t type, const char * payload, size_t length = 0);
     bool send(socketIOmessageType_t type, String & payload);
 
+    void setExtraHeaders(const char * extraHeaders = NULL);
+    void setReconnectInterval(unsigned long time);
+
     void loop(void);
 
+    void configureEIOping(bool disableHeartbeat = false);
+
   protected:
+    bool _disableHeartbeat  = false;
     uint64_t _lastHeartbeat = 0;
     SocketIOclientEvent _cbEvent;
     virtual void runIOCbEvent(socketIOmessageType_t type, uint8_t * payload, size_t length) {
@@ -76,6 +96,8 @@ class SocketIOclient : protected WebSocketsClient {
         }
     }
 
+    void initClient(void);
+
     // Handeling events from websocket layer
     virtual void runCbEvent(WStype_t type, uint8_t * payload, size_t length) {
         handleCbEvent(type, payload, length);

src/WebSockets.cpp

@@ -42,7 +42,11 @@ extern "C" {
 #include <esp_system.h>
 
 #if ESP_IDF_VERSION_MAJOR >= 4
+#if(ESP_ARDUINO_VERSION >= ESP_ARDUINO_VERSION_VAL(1, 0, 6))
+#include "sha/sha_parallel_engine.h"
+#else
 #include <esp32/sha.h>
+#endif
 #else
 #include <hwcrypto/sha.h>
 #endif
@@ -468,7 +472,7 @@ void WebSockets::handleWebsocketPayloadCb(WSclient_t * client, bool ok, uint8_t
             payload[header->payloadLen] = 0x00;
 
             if(header->mask) {
-                //decode XOR
+                // decode XOR
                 for(size_t i = 0; i < header->payloadLen; i++) {
                     payload[i] = (payload[i] ^ header->maskKey[i % 4]);
                 }
@@ -478,7 +482,7 @@ void WebSockets::handleWebsocketPayloadCb(WSclient_t * client, bool ok, uint8_t
         switch(header->opCode) {
             case WSop_text:
                 DEBUG_WEBSOCKETS("[WS][%d][handleWebsocket] text: %s\n", client->num, payload);
-                // no break here!
+                // fallthrough
             case WSop_binary:
             case WSop_continuation:
                 messageReceived(client, header->opCode, payload, header->payloadLen, header->fin);
@@ -501,7 +505,7 @@ void WebSockets::handleWebsocketPayloadCb(WSclient_t * client, bool ok, uint8_t
                     reasonCode = payload[0] << 8 | payload[1];
                 }
 #endif
-                DEBUG_WEBSOCKETS("[WS][%d][handleWebsocket] get ask for close. Code: %d", client->num, reasonCode);
+                DEBUG_WEBSOCKETS("[WS][%d][handleWebsocket] get ask for close. Code: %d\n", client->num, reasonCode);
                 if(header->payloadLen > 2) {
                     DEBUG_WEBSOCKETS(" (%s)\n", (payload + 2));
                 } else {
@@ -510,6 +514,7 @@ void WebSockets::handleWebsocketPayloadCb(WSclient_t * client, bool ok, uint8_t
                 clientDisconnect(client, 1000);
             } break;
             default:
+                DEBUG_WEBSOCKETS("[WS][%d][handleWebsocket] got unknown opcode: %d\n", client->num, header->opCode);
                 clientDisconnect(client, 1002);
                 break;
         }
@@ -521,7 +526,7 @@ void WebSockets::handleWebsocketPayloadCb(WSclient_t * client, bool ok, uint8_t
         // reset input
         client->cWsRXsize = 0;
 #if(WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266_ASYNC)
-        //register callback for next message
+        // register callback for next message
         handleWebsocketWaitFor(client, 2);
 #endif
 
@@ -566,6 +571,7 @@ String WebSockets::acceptKey(String & clientKey) {
  */
 String WebSockets::base64_encode(uint8_t * data, size_t length) {
     size_t size   = ((length * 1.6f) + 1);
+    size          = std::max(size, (size_t)5);    // minimum buffer size
     char * buffer = (char *)malloc(size);
     if(buffer) {
         base64_encodestate _state;
@@ -630,7 +636,7 @@ bool WebSockets::readCb(WSclient_t * client, uint8_t * out, size_t n, WSreadWait
         }
 
         if(!client->tcp->available()) {
-            WEBSOCKETS_YIELD();
+            WEBSOCKETS_YIELD_MORE();
             continue;
         }
 
@@ -639,11 +645,13 @@ bool WebSockets::readCb(WSclient_t * client, uint8_t * out, size_t n, WSreadWait
             t = millis();
             out += len;
             n -= len;
-            //DEBUG_WEBSOCKETS("Receive %d left %d!\n", len, n);
+            // DEBUG_WEBSOCKETS("Receive %d left %d!\n", len, n);
         } else {
-            //DEBUG_WEBSOCKETS("Receive %d left %d!\n", len, n);
+            // DEBUG_WEBSOCKETS("Receive %d left %d!\n", len, n);
+        }
+        if(n > 0) {
+            WEBSOCKETS_YIELD();
         }
-        WEBSOCKETS_YIELD();
     }
     if(cb) {
         cb(client, true);
@@ -691,11 +699,13 @@ size_t WebSockets::write(WSclient_t * client, uint8_t * out, size_t n) {
             out += len;
             n -= len;
             total += len;
-            //DEBUG_WEBSOCKETS("write %d left %d!\n", len, n);
+            // DEBUG_WEBSOCKETS("write %d left %d!\n", len, n);
         } else {
-            //DEBUG_WEBSOCKETS("write %d failed left %d!\n", len, n);
+            DEBUG_WEBSOCKETS("WS write %d failed left %d!\n", len, n);
+        }
+        if(n > 0) {
+            WEBSOCKETS_YIELD();
         }
-        WEBSOCKETS_YIELD();
     }
     WEBSOCKETS_YIELD();
     return total;
@@ -740,7 +750,7 @@ void WebSockets::handleHBTimeout(WSclient_t * client) {
                 client->pongTimeoutCount++;
                 client->lastPing = millis() - client->pingInterval - 500;    // force ping on the next run
 
-                DEBUG_WEBSOCKETS("[HBtimeout] pong TIMEOUT! lp=%d millis=%d pi=%d count=%d\n", client->lastPing, millis(), pi, client->pongTimeoutCount);
+                DEBUG_WEBSOCKETS("[HBtimeout] pong TIMEOUT! lp=%d millis=%lu pi=%d count=%d\n", client->lastPing, millis(), pi, client->pongTimeoutCount);
 
                 if(client->disconnectTimeoutCount && client->pongTimeoutCount >= client->disconnectTimeoutCount) {
                     DEBUG_WEBSOCKETS("[HBtimeout] count=%d, DISCONNECTING\n", client->pongTimeoutCount);

src/WebSockets.h

@@ -40,11 +40,17 @@
 #include <functional>
 #endif
 
+#include "WebSocketsVersion.h"
+
 #ifndef NODEBUG_WEBSOCKETS
 #ifdef DEBUG_ESP_PORT
-#define DEBUG_WEBSOCKETS(...) DEBUG_ESP_PORT.printf(__VA_ARGS__)
+#define DEBUG_WEBSOCKETS(...)               \
+    {                                       \
+        DEBUG_ESP_PORT.printf(__VA_ARGS__); \
+        DEBUG_ESP_PORT.flush();             \
+    }
 #else
-//#define DEBUG_WEBSOCKETS(...) os_printf( __VA_ARGS__ )
+// #define DEBUG_WEBSOCKETS(...) os_printf( __VA_ARGS__ )
 #endif
 #endif
 
@@ -61,12 +67,14 @@
 #define WEBSOCKETS_USE_BIG_MEM
 #define GET_FREE_HEAP ESP.getFreeHeap()
 // moves all Header strings to Flash (~300 Byte)
-//#define WEBSOCKETS_SAVE_RAM
+// #define WEBSOCKETS_SAVE_RAM
 
 #if defined(ESP8266)
 #define WEBSOCKETS_YIELD() delay(0)
+#define WEBSOCKETS_YIELD_MORE() delay(1)
 #elif defined(ESP32)
 #define WEBSOCKETS_YIELD() yield()
+#define WEBSOCKETS_YIELD_MORE() delay(1)
 #endif
 
 #elif defined(STM32_DEVICE)
@@ -75,18 +83,47 @@
 #define WEBSOCKETS_USE_BIG_MEM
 #define GET_FREE_HEAP System.freeMemory()
 #define WEBSOCKETS_YIELD()
+#define WEBSOCKETS_YIELD_MORE()
+
+#elif defined(ARDUINO_ARCH_RP2040)
+
+#define WEBSOCKETS_MAX_DATA_SIZE (15 * 1024)
+#define WEBSOCKETS_USE_BIG_MEM
+#define GET_FREE_HEAP rp2040.getFreeHeap()
+#define WEBSOCKETS_YIELD() yield()
+#define WEBSOCKETS_YIELD_MORE() delay(1)
+
+#elif defined(ARDUINO_UNOWIFIR4)
+
+#define WEBSOCKETS_MAX_DATA_SIZE (15 * 1024)
+#define WEBSOCKETS_YIELD() yield()
+#define WEBSOCKETS_YIELD_MORE() delay(1)
+
+#elif defined(ARDUINO_SAMD_MKRWIFI1010) || defined(ARDUINO_SAMD_NANO_33_IOT)
+
+#define WEBSOCKETS_MAX_DATA_SIZE (15 * 1024)
+#define WEBSOCKETS_YIELD() yield()
+#define WEBSOCKETS_YIELD_MORE() delay(1)
+
+#elif defined(WIO_TERMINAL) || defined(SEEED_XIAO_M0)
+
+#define WEBSOCKETS_MAX_DATA_SIZE (15 * 1024)
+#define WEBSOCKETS_YIELD() yield()
+#define WEBSOCKETS_YIELD_MORE() delay(1)
 
 #else
 
-//atmega328p has only 2KB ram!
+// atmega328p has only 2KB ram!
 #define WEBSOCKETS_MAX_DATA_SIZE (1024)
 // moves all Header strings to Flash
 #define WEBSOCKETS_SAVE_RAM
 #define WEBSOCKETS_YIELD()
-
+#define WEBSOCKETS_YIELD_MORE()
 #endif
 
+#ifndef WEBSOCKETS_TCP_TIMEOUT
 #define WEBSOCKETS_TCP_TIMEOUT (5000)
+#endif
 
 #define NETWORK_ESP8266_ASYNC (0)
 #define NETWORK_ESP8266 (1)
@@ -94,6 +131,10 @@
 #define NETWORK_ENC28J60 (3)
 #define NETWORK_ESP32 (4)
 #define NETWORK_ESP32_ETH (5)
+#define NETWORK_RP2040 (6)
+#define NETWORK_UNOWIFIR4 (7)
+#define NETWORK_WIFI_NINA (8)
+#define NETWORK_SAMD_SEED (9)
 
 // max size of the WS Message Header
 #define WEBSOCKETS_MAX_HEADER_SIZE (14)
@@ -102,12 +143,25 @@
 // select Network type based
 #if defined(ESP8266) || defined(ESP31B)
 #define WEBSOCKETS_NETWORK_TYPE NETWORK_ESP8266
-//#define WEBSOCKETS_NETWORK_TYPE NETWORK_ESP8266_ASYNC
-//#define WEBSOCKETS_NETWORK_TYPE NETWORK_W5100
+// #define WEBSOCKETS_NETWORK_TYPE NETWORK_ESP8266_ASYNC
+// #define WEBSOCKETS_NETWORK_TYPE NETWORK_W5100
 
 #elif defined(ESP32)
 #define WEBSOCKETS_NETWORK_TYPE NETWORK_ESP32
-//#define WEBSOCKETS_NETWORK_TYPE NETWORK_ESP32_ETH
+// #define WEBSOCKETS_NETWORK_TYPE NETWORK_ESP32_ETH
+
+#elif defined(ARDUINO_ARCH_RP2040)
+#define WEBSOCKETS_NETWORK_TYPE NETWORK_RP2040
+
+#elif defined(ARDUINO_UNOWIFIR4)
+#define WEBSOCKETS_NETWORK_TYPE NETWORK_UNOWIFIR4
+
+#elif defined(ARDUINO_SAMD_MKRWIFI1010) || defined(ARDUINO_SAMD_NANO_33_IOT)
+#define WEBSOCKETS_NETWORK_TYPE NETWORK_WIFI_NINA
+
+#elif defined(WIO_TERMINAL) || defined(SEEED_XIAO_M0)
+#define WEBSOCKETS_NETWORK_TYPE NETWORK_SAMD_SEED
+
 #else
 #define WEBSOCKETS_NETWORK_TYPE NETWORK_W5100
 
@@ -126,6 +180,7 @@
 #elif defined(ESP32)
 #include <WiFi.h>
 #include <WiFiClientSecure.h>
+#define SSL_AXTLS
 #elif defined(ESP31B)
 #include <ESP31BWiFi.h>
 #else
@@ -145,6 +200,11 @@
 
 #ifdef ESP8266
 #include <ESP8266WiFi.h>
+#if defined(wificlientbearssl_h) && !defined(USING_AXTLS) && !defined(wificlientsecure_h)
+#define SSL_BARESSL
+#else
+#define SSL_AXTLS
+#endif
 #else
 #include <ESP31BWiFi.h>
 #endif
@@ -174,6 +234,7 @@
 
 #include <WiFi.h>
 #include <WiFiClientSecure.h>
+#define SSL_AXTLS
 #define WEBSOCKETS_NETWORK_CLASS WiFiClient
 #define WEBSOCKETS_NETWORK_SSL_CLASS WiFiClientSecure
 #define WEBSOCKETS_NETWORK_SERVER_CLASS WiFiServer
@@ -184,6 +245,47 @@
 #define WEBSOCKETS_NETWORK_CLASS WiFiClient
 #define WEBSOCKETS_NETWORK_SERVER_CLASS WiFiServer
 
+#elif(WEBSOCKETS_NETWORK_TYPE == NETWORK_RP2040)
+
+#include <WiFi.h>
+#include <WiFiClientSecure.h>
+#define SSL_BARESSL
+#define WEBSOCKETS_NETWORK_CLASS WiFiClient
+#define WEBSOCKETS_NETWORK_SSL_CLASS WiFiClientSecure
+#define WEBSOCKETS_NETWORK_SERVER_CLASS WiFiServer
+
+#elif(WEBSOCKETS_NETWORK_TYPE == NETWORK_UNOWIFIR4)
+
+#include <WiFiS3.h>
+#define WEBSOCKETS_NETWORK_CLASS WiFiClient
+#define WEBSOCKETS_NETWORK_SERVER_CLASS WiFiServer
+
+#elif(WEBSOCKETS_NETWORK_TYPE == NETWORK_WIFI_NINA)
+#if __has_include(<WiFiNINA.h>)
+    #include <WiFiNINA.h>
+#else
+    #error "Please install WiFiNINA library!"
+#endif
+
+#define WEBSOCKETS_NETWORK_CLASS WiFiClient
+#define WEBSOCKETS_NETWORK_SERVER_CLASS WiFiServer
+#define WEBSOCKETS_NETWORK_SSL_CLASS WiFiSSLClient
+
+#elif(WEBSOCKETS_NETWORK_TYPE == NETWORK_SAMD_SEED)
+#if __has_include(<rpcWiFi.h>) && __has_include(<rpcWiFiClientSecure.h>)
+    #include <rpcWiFi.h>
+    #include <rpcWiFiClientSecure.h>
+#else
+    #error "Please install rpcWiFi library!"
+#endif
+
+#define WEBSOCKETS_NETWORK_CLASS WiFiClient
+#define WEBSOCKETS_NETWORK_SERVER_CLASS WiFiServer
+#define WEBSOCKETS_NETWORK_SSL_CLASS WiFiClientSecure
+
+#define WEBSOCKETS_NETWORK_CLASS WiFiClient
+#define WEBSOCKETS_NETWORK_SERVER_CLASS WiFiServer
+
 #else
 #error "no network type selected!"
 #endif
@@ -202,6 +304,7 @@
 typedef enum {
     WSC_NOT_CONNECTED,
     WSC_HEADER,
+    WSC_BODY,
     WSC_CONNECTED
 } WSclientsStatus_t;
 
@@ -245,34 +348,44 @@ typedef struct {
 } WSMessageHeader_t;
 
 typedef struct {
-    uint8_t num;    ///< connection number
+    void init(uint8_t num,
+        uint32_t pingInterval,
+        uint32_t pongTimeout,
+        uint8_t disconnectTimeoutCount) {
+        this->num                    = num;
+        this->pingInterval           = pingInterval;
+        this->pongTimeout            = pongTimeout;
+        this->disconnectTimeoutCount = disconnectTimeoutCount;
+    }
 
-    WSclientsStatus_t status;
+    uint8_t num = 0;    ///< connection number
 
-    WEBSOCKETS_NETWORK_CLASS * tcp;
+    WSclientsStatus_t status = WSC_NOT_CONNECTED;
 
-    bool isSocketIO;    ///< client for socket.io server
+    WEBSOCKETS_NETWORK_CLASS * tcp = nullptr;
+
+    bool isSocketIO = false;    ///< client for socket.io server
 
 #if defined(HAS_SSL)
-    bool isSSL;    ///< run in ssl mode
+    bool isSSL = false;    ///< run in ssl mode
     WEBSOCKETS_NETWORK_SSL_CLASS * ssl;
 #endif
 
-    String cUrl;       ///< http url
-    uint16_t cCode;    ///< http code
+    String cUrl;           ///< http url
+    uint16_t cCode = 0;    ///< http code
 
-    bool cIsClient = false;    ///< will be used for masking
-    bool cIsUpgrade;           ///< Connection == Upgrade
-    bool cIsWebsocket;         ///< Upgrade == websocket
+    bool cIsClient    = false;    ///< will be used for masking
+    bool cIsUpgrade   = false;    ///< Connection == Upgrade
+    bool cIsWebsocket = false;    ///< Upgrade == websocket
 
-    String cSessionId;     ///< client Set-Cookie (session id)
-    String cKey;           ///< client Sec-WebSocket-Key
-    String cAccept;        ///< client Sec-WebSocket-Accept
-    String cProtocol;      ///< client Sec-WebSocket-Protocol
-    String cExtensions;    ///< client Sec-WebSocket-Extensions
-    uint16_t cVersion;     ///< client Sec-WebSocket-Version
+    String cSessionId;        ///< client Set-Cookie (session id)
+    String cKey;              ///< client Sec-WebSocket-Key
+    String cAccept;           ///< client Sec-WebSocket-Accept
+    String cProtocol;         ///< client Sec-WebSocket-Protocol
+    String cExtensions;       ///< client Sec-WebSocket-Extensions
+    uint16_t cVersion = 0;    ///< client Sec-WebSocket-Version
 
-    uint8_t cWsRXsize;                                ///< State of the RX
+    uint8_t cWsRXsize = 0;                            ///< State of the RX
     uint8_t cWsHeader[WEBSOCKETS_MAX_HEADER_SIZE];    ///< RX WS Message buffer
     WSMessageHeader_t cWsHeaderDecode;
 
@@ -281,15 +394,15 @@ typedef struct {
 
     String extraHeaders;
 
-    bool cHttpHeadersValid;           ///< non-websocket http header validity indicator
-    size_t cMandatoryHeadersCount;    ///< non-websocket mandatory http headers present count
+    bool cHttpHeadersValid = false;    ///< non-websocket http header validity indicator
+    size_t cMandatoryHeadersCount;     ///< non-websocket mandatory http headers present count
 
-    bool pongReceived;
-    uint32_t pingInterval;             // how often ping will be sent, 0 means "heartbeat is not active"
-    uint32_t lastPing;                 // millis when last pong has been received
-    uint32_t pongTimeout;              // interval in millis after which pong is considered to timeout
-    uint8_t disconnectTimeoutCount;    // after how many subsequent pong timeouts discconnect will happen, 0 means "do not disconnect"
-    uint8_t pongTimeoutCount;          // current pong timeout count
+    bool pongReceived              = false;
+    uint32_t pingInterval          = 0;    // how often ping will be sent, 0 means "heartbeat is not active"
+    uint32_t lastPing              = 0;    // millis when last pong has been received
+    uint32_t pongTimeout           = 0;    // interval in millis after which pong is considered to timeout
+    uint8_t disconnectTimeoutCount = 0;    // after how many subsequent pong timeouts discconnect will happen, 0 means "do not disconnect"
+    uint8_t pongTimeoutCount       = 0;    // current pong timeout count
 
 #if(WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266_ASYNC)
     String cHttpLine;    ///< HTTP header lines

src/WebSockets4WebServer.h

@@ -0,0 +1,86 @@
+/**
+ * @file WebSocketsServer.cpp
+ * @date 28.10.2020
+ * @author Markus Sattler & esp8266/arduino community
+ *
+ * Copyright (c) 2020 Markus Sattler. All rights reserved.
+ * This file is part of the WebSockets for Arduino.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+#ifndef __WEBSOCKETS4WEBSERVER_H
+#define __WEBSOCKETS4WEBSERVER_H
+
+#include <WebSocketsServer.h>
+#include <ESP8266WebServer.h>
+
+#if((WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266) || (WEBSOCKETS_NETWORK_TYPE == NETWORK_RP2040)) && WEBSERVER_HAS_HOOK
+
+class WebSockets4WebServer : public WebSocketsServerCore {
+#if defined(ESP8266)
+    using WebServerClass = ESP8266WebServer;
+#else
+    using WebServerClass = WebServer;
+#endif
+
+  public:
+    WebSockets4WebServer(const String & origin = "", const String & protocol = "arduino")
+        : WebSocketsServerCore(origin, protocol) {
+        begin();
+    }
+
+    WebServerClass::HookFunction hookForWebserver(const String & wsRootDir, WebSocketServerEvent event) {
+        onEvent(event);
+
+        return [&, wsRootDir](const String & method, const String & url, WiFiClient * tcpClient, WebServerClass::ContentTypeFunction contentType) {
+            (void)contentType;
+
+            if(!(method == "GET" && url.indexOf(wsRootDir) == 0)) {
+                return WebServerClass::CLIENT_REQUEST_CAN_CONTINUE;
+            }
+
+            // allocate a WiFiClient copy (like in WebSocketsServer::handleNewClients())
+            WEBSOCKETS_NETWORK_CLASS * newTcpClient = new WEBSOCKETS_NETWORK_CLASS(*tcpClient);
+
+            // Then initialize a new WSclient_t (like in WebSocketsServer::handleNewClient())
+            WSclient_t * client = handleNewClient(newTcpClient);
+
+            if(client) {
+                // give "GET <url>"
+                String headerLine;
+                headerLine.reserve(url.length() + 5);
+                headerLine = "GET ";
+                headerLine += url;
+                handleHeader(client, &headerLine);
+            }
+
+            // tell webserver to not close but forget about this client
+            return WebServerClass::CLIENT_IS_GIVEN;
+        };
+    }
+};
+#else    // WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266 && WEBSERVER_HAS_HOOK
+
+#ifndef WEBSERVER_HAS_HOOK
+#error Your current Framework / Arduino core version does not support Webserver Hook Functions
+#else
+#error Your Hardware Platform does not support Webserver Hook Functions
+#endif
+
+#endif    // WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266 && WEBSERVER_HAS_HOOK
+
+#endif    // __WEBSOCKETS4WEBSERVER_H

src/WebSocketsClient.cpp

@@ -46,8 +46,14 @@ void WebSocketsClient::begin(const char * host, uint16_t port, const char * url,
     _host = host;
     _port = port;
 #if defined(HAS_SSL)
-    _fingerprint = "";
+    _fingerprint = SSL_FINGERPRINT_NULL;
     _CA_cert     = NULL;
+#ifdef ESP32
+    _CA_bundle = NULL;
+#if ESP_ARDUINO_VERSION >= ESP_ARDUINO_VERSION_VAL(3, 0, 4)
+    _CA_bundle_size = 0;
+#endif
+#endif
 #endif
 
     _client.num    = 0;
@@ -76,6 +82,8 @@ void WebSocketsClient::begin(const char * host, uint16_t port, const char * url,
 
 #ifdef ESP8266
     randomSeed(RANDOM_REG32);
+#elif defined(ARDUINO_ARCH_RP2040)
+    randomSeed(rp2040.hwrand32());
 #else
     // todo find better seed
     randomSeed(millis());
@@ -85,6 +93,9 @@ void WebSocketsClient::begin(const char * host, uint16_t port, const char * url,
 #endif
 
     _lastConnectionFail = 0;
+    _lastHeaderSent     = 0;
+
+    DEBUG_WEBSOCKETS("[WS-Client] Websocket Version: " WEBSOCKETS_VERSION "\n");
 }
 
 void WebSocketsClient::begin(String host, uint16_t port, String url, String protocol) {
@@ -96,11 +107,13 @@ void WebSocketsClient::begin(IPAddress host, uint16_t port, const char * url, co
 }
 
 #if defined(HAS_SSL)
+#if defined(SSL_AXTLS)
 void WebSocketsClient::beginSSL(const char * host, uint16_t port, const char * url, const char * fingerprint, const char * protocol) {
     begin(host, port, url, protocol);
     _client.isSSL = true;
     _fingerprint  = fingerprint;
     _CA_cert      = NULL;
+    _CA_bundle    = NULL;
 }
 
 void WebSocketsClient::beginSSL(String host, uint16_t port, String url, String fingerprint, String protocol) {
@@ -110,11 +123,64 @@ void WebSocketsClient::beginSSL(String host, uint16_t port, String url, String f
 void WebSocketsClient::beginSslWithCA(const char * host, uint16_t port, const char * url, const char * CA_cert, const char * protocol) {
     begin(host, port, url, protocol);
     _client.isSSL = true;
-    _fingerprint  = "";
+    _fingerprint  = SSL_FINGERPRINT_NULL;
     _CA_cert      = CA_cert;
+    _CA_bundle    = NULL;
+}
+
+#if defined(ESP32) && ESP_ARDUINO_VERSION >= ESP_ARDUINO_VERSION_VAL(3, 0, 4)
+void WebSocketsClient::beginSslWithBundle(const char * host, uint16_t port, const char * url, const uint8_t * CA_bundle, size_t CA_bundle_size, const char * protocol) {
+    begin(host, port, url, protocol);
+    _client.isSSL   = true;
+    _fingerprint    = SSL_FINGERPRINT_NULL;
+    _CA_cert        = NULL;
+    _CA_bundle      = CA_bundle;
+    _CA_bundle_size = CA_bundle_size;
+}
+#else
+void WebSocketsClient::beginSslWithBundle(const char * host, uint16_t port, const char * url, const uint8_t * CA_bundle, const char * protocol) {
+    begin(host, port, url, protocol);
+    _client.isSSL = true;
+    _fingerprint  = SSL_FINGERPRINT_NULL;
+    _CA_cert      = NULL;
+    _CA_bundle    = CA_bundle;
 }
 #endif
 
+#else
+void WebSocketsClient::beginSSL(const char * host, uint16_t port, const char * url, const uint8_t * fingerprint, const char * protocol) {
+    begin(host, port, url, protocol);
+    _client.isSSL = true;
+    _fingerprint  = fingerprint;
+    _CA_cert      = NULL;
+}
+
+#if defined(SSL_BARESSL)
+void WebSocketsClient::beginSslWithCA(const char * host, uint16_t port, const char * url, BearSSL::X509List * CA_cert, const char * protocol) {
+    begin(host, port, url, protocol);
+    _client.isSSL = true;
+    _fingerprint  = SSL_FINGERPRINT_NULL;
+    _CA_cert      = CA_cert;
+}
+
+void WebSocketsClient::beginSslWithCA(const char * host, uint16_t port, const char * url, const char * CA_cert, const char * protocol) {
+    beginSslWithCA(host, port, url, new BearSSL::X509List(CA_cert), protocol);
+}
+
+void WebSocketsClient::setSSLClientCertKey(const char * clientCert, const char * clientPrivateKey) {
+    setSSLClientCertKey(new BearSSL::X509List(clientCert), new BearSSL::PrivateKey(clientPrivateKey));
+}
+
+void WebSocketsClient::setSSLClientCertKey(BearSSL::X509List * clientCert, BearSSL::PrivateKey * clientPrivateKey) {
+    _client_cert = clientCert;
+    _client_key  = clientPrivateKey;
+}
+#endif    // SSL_BARESSL
+
+
+#endif    // SSL_AXTLS
+#endif    // HAS_SSL
+
 void WebSocketsClient::beginSocketIO(const char * host, uint16_t port, const char * url, const char * protocol) {
     begin(host, port, url, protocol);
     _client.isSocketIO = true;
@@ -129,20 +195,35 @@ void WebSocketsClient::beginSocketIOSSL(const char * host, uint16_t port, const
     begin(host, port, url, protocol);
     _client.isSocketIO = true;
     _client.isSSL      = true;
-    _fingerprint       = "";
+    _fingerprint       = SSL_FINGERPRINT_NULL;
 }
 
 void WebSocketsClient::beginSocketIOSSL(String host, uint16_t port, String url, String protocol) {
     beginSocketIOSSL(host.c_str(), port, url.c_str(), protocol.c_str());
 }
 
+#if defined(SSL_BARESSL)
+void WebSocketsClient::beginSocketIOSSLWithCA(const char * host, uint16_t port, const char * url, BearSSL::X509List * CA_cert, const char * protocol) {
+    begin(host, port, url, protocol);
+    _client.isSocketIO = true;
+    _client.isSSL      = true;
+    _fingerprint       = SSL_FINGERPRINT_NULL;
+    _CA_cert           = CA_cert;
+}
+#endif
+
 void WebSocketsClient::beginSocketIOSSLWithCA(const char * host, uint16_t port, const char * url, const char * CA_cert, const char * protocol) {
     begin(host, port, url, protocol);
     _client.isSocketIO = true;
     _client.isSSL      = true;
-    _fingerprint       = "";
-    _CA_cert           = CA_cert;
+    _fingerprint       = SSL_FINGERPRINT_NULL;
+#if defined(SSL_BARESSL)
+    _CA_cert = new BearSSL::X509List(CA_cert);
+#else
+    _CA_cert = CA_cert;
+#endif
 }
+
 #endif
 
 #if(WEBSOCKETS_NETWORK_TYPE != NETWORK_ESP8266_ASYNC)
@@ -164,7 +245,12 @@ void WebSocketsClient::loop(void) {
         if(_client.isSSL) {
             DEBUG_WEBSOCKETS("[WS-Client] connect wss...\n");
             if(_client.ssl) {
-                delete _client.ssl;
+                #if(WEBSOCKETS_NETWORK_TYPE == NETWORK_WIFI_NINA) || (WEBSOCKETS_NETWORK_TYPE == NETWORK_SAMD_SEED) || (WEBSOCKETS_NETWORK_TYPE ==NETWORK_UNOWIFIR4)
+                    // does not support delete (no destructor)
+                #else
+                    delete _client.ssl;
+                #endif
+                
                 _client.ssl = NULL;
                 _client.tcp = NULL;
             }
@@ -174,16 +260,46 @@ void WebSocketsClient::loop(void) {
                 DEBUG_WEBSOCKETS("[WS-Client] setting CA certificate");
 #if defined(ESP32)
                 _client.ssl->setCACert(_CA_cert);
-#elif defined(ESP8266)
+#elif defined(ESP8266) && defined(SSL_AXTLS)
                 _client.ssl->setCACert((const uint8_t *)_CA_cert, strlen(_CA_cert) + 1);
+#elif(defined(ESP8266) || defined(ARDUINO_ARCH_RP2040)) && defined(SSL_BARESSL)
+                _client.ssl->setTrustAnchors(_CA_cert);
+#elif defined(WIO_TERMINAL) || defined(SEEED_XIAO_M0)
+                _client.ssl->setCACert(_CA_cert);
+#elif defined(ARDUINO_SAMD_MKRWIFI1010) || defined(ARDUINO_SAMD_NANO_33_IOT)
+                // no setCACert
 #else
 #error setCACert not implemented
+#endif
+#if defined(ESP32)
+            } else if(_CA_bundle) {
+                DEBUG_WEBSOCKETS("[WS-Client] setting CA bundle");
+#if ESP_ARDUINO_VERSION >= ESP_ARDUINO_VERSION_VAL(3, 0, 4)
+                _client.ssl->setCACertBundle(_CA_bundle, _CA_bundle_size);
+#else
+                _client.ssl->setCACertBundle(_CA_bundle);
+#endif
+            } else if(!SSL_FINGERPRINT_IS_SET) {
+                _client.ssl->setInsecure();
+#elif defined(SSL_BARESSL)
+            } else if(SSL_FINGERPRINT_IS_SET) {
+                _client.ssl->setFingerprint(_fingerprint);
+            } else {
+                _client.ssl->setInsecure();
+            }
+            if(_client_cert && _client_key) {
+                _client.ssl->setClientRSACert(_client_cert, _client_key);
+                DEBUG_WEBSOCKETS("[WS-Client] setting client certificate and key");
 #endif
             }
         } else {
             DEBUG_WEBSOCKETS("[WS-Client] connect ws...\n");
             if(_client.tcp) {
+                #if(WEBSOCKETS_NETWORK_TYPE == NETWORK_WIFI_NINA) || (WEBSOCKETS_NETWORK_TYPE == NETWORK_SAMD_SEED) || (WEBSOCKETS_NETWORK_TYPE ==NETWORK_UNOWIFIR4)
+                    // does not support delete (no destructor)
+                #else
                 delete _client.tcp;
+                #endif
                 _client.tcp = NULL;
             }
             _client.tcp = new WEBSOCKETS_NETWORK_CLASS();
@@ -363,9 +479,9 @@ bool WebSocketsClient::isConnected(void) {
     return (_client.status == WSC_CONNECTED);
 }
 
-//#################################################################################
-//#################################################################################
-//#################################################################################
+// #################################################################################
+// #################################################################################
+// #################################################################################
 
 /**
  *
@@ -410,7 +526,7 @@ void WebSocketsClient::messageReceived(WSclient_t * client, WSopcode_t opcode, u
 void WebSocketsClient::clientDisconnect(WSclient_t * client) {
     bool event = false;
 
-#if(WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266) || (WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP32)
+#if(WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266) || (WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP32) || (WEBSOCKETS_NETWORK_TYPE == NETWORK_RP2040)
     if(client->isSSL && client->ssl) {
         if(client->ssl->connected()) {
             client->ssl->flush();
@@ -434,7 +550,11 @@ void WebSocketsClient::clientDisconnect(WSclient_t * client) {
 #if(WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266_ASYNC)
         client->status = WSC_NOT_CONNECTED;
 #else
-        delete client->tcp;
+        #if(WEBSOCKETS_NETWORK_TYPE == NETWORK_WIFI_NINA) || (WEBSOCKETS_NETWORK_TYPE == NETWORK_SAMD_SEED) || (WEBSOCKETS_NETWORK_TYPE ==NETWORK_UNOWIFIR4)
+            // does not support delete (no destructor)
+        #else
+            delete client->tcp;
+        #endif
 #endif
         client->tcp = NULL;
     }
@@ -447,7 +567,8 @@ void WebSocketsClient::clientDisconnect(WSclient_t * client) {
     client->cIsWebsocket = false;
     client->cSessionId   = "";
 
-    client->status = WSC_NOT_CONNECTED;
+    client->status      = WSC_NOT_CONNECTED;
+    _lastConnectionFail = millis();
 
     DEBUG_WEBSOCKETS("[WS-Client] client disconnected.\n");
     if(event) {
@@ -490,6 +611,13 @@ bool WebSocketsClient::clientIsConnected(WSclient_t * client) {
  * Handel incomming data from Client
  */
 void WebSocketsClient::handleClientData(void) {
+    if((_client.status == WSC_HEADER || _client.status == WSC_BODY) && _lastHeaderSent + WEBSOCKETS_TCP_TIMEOUT < millis()) {
+        DEBUG_WEBSOCKETS("[WS-Client][handleClientData] header response timeout.. disconnecting!\n");
+        clientDisconnect(&_client);
+        WEBSOCKETS_YIELD();
+        return;
+    }
+
     int len = _client.tcp->available();
     if(len > 0) {
         switch(_client.status) {
@@ -497,6 +625,12 @@ void WebSocketsClient::handleClientData(void) {
                 String headerLine = _client.tcp->readStringUntil('\n');
                 handleHeader(&_client, &headerLine);
             } break;
+            case WSC_BODY: {
+                char buf[256] = { 0 };
+                _client.tcp->readBytes(&buf[0], std::min((size_t)len, sizeof(buf)));
+                String bodyLine = buf;
+                handleHeader(&_client, &bodyLine);
+            } break;
             case WSC_CONNECTED:
                 WebSockets::handleWebsocket(&_client);
                 break;
@@ -572,7 +706,7 @@ void WebSocketsClient::sendHeader(WSclient_t * client) {
     }
 
     // add extra headers; by default this includes "Origin: file://"
-    if(client->extraHeaders) {
+    if(client->extraHeaders.length() > 0) {
         handshake += client->extraHeaders + NEW_LINE;
     }
 
@@ -598,6 +732,7 @@ void WebSocketsClient::sendHeader(WSclient_t * client) {
 #endif
 
     DEBUG_WEBSOCKETS("[WS-Client][sendHeader] sending header... Done (%luus).\n", (micros() - start));
+    _lastHeaderSent = millis();
 }
 
 /**
@@ -607,6 +742,22 @@ void WebSocketsClient::sendHeader(WSclient_t * client) {
 void WebSocketsClient::handleHeader(WSclient_t * client, String * headerLine) {
     headerLine->trim();    // remove \r
 
+    // this code handels the http body for Socket.IO V3 requests
+    if(headerLine->length() > 0 && client->isSocketIO && client->status == WSC_BODY && client->cSessionId.length() == 0) {
+        DEBUG_WEBSOCKETS("[WS-Client][handleHeader] socket.io json: %s\n", headerLine->c_str());
+        String sid_begin = WEBSOCKETS_STRING("\"sid\":\"");
+        if(headerLine->indexOf(sid_begin) > -1) {
+            int start          = headerLine->indexOf(sid_begin) + sid_begin.length();
+            int end            = headerLine->indexOf('"', start);
+            client->cSessionId = headerLine->substring(start, end);
+            DEBUG_WEBSOCKETS("[WS-Client][handleHeader]  - cSessionId: %s\n", client->cSessionId.c_str());
+
+            // Trigger websocket connection code path
+            *headerLine = "";
+        }
+    }
+
+    // headle HTTP header
     if(headerLine->length() > 0) {
         DEBUG_WEBSOCKETS("[WS-Client][handleHeader] RX: %s\n", headerLine->c_str());
 
@@ -639,8 +790,8 @@ void WebSocketsClient::handleHeader(WSclient_t * client, String * headerLine) {
                 client->cExtensions = headerValue;
             } else if(headerName.equalsIgnoreCase(WEBSOCKETS_STRING("Sec-WebSocket-Version"))) {
                 client->cVersion = headerValue.toInt();
-            } else if(headerName.equalsIgnoreCase(WEBSOCKETS_STRING("Set-Cookie"))) {
-                if(headerValue.indexOf(WEBSOCKETS_STRING("HttpOnly")) > -1) {
+            } else if(headerName.equalsIgnoreCase(WEBSOCKETS_STRING("Set-Cookie")) && headerValue.indexOf(" io=") > -1) {
+                if(headerValue.indexOf(';') > -1) {
                     client->cSessionId = headerValue.substring(headerValue.indexOf('=') + 1, headerValue.indexOf(";"));
                 } else {
                     client->cSessionId = headerValue.substring(headerValue.indexOf('=') + 1);
@@ -671,6 +822,14 @@ void WebSocketsClient::handleHeader(WSclient_t * client, String * headerLine) {
         DEBUG_WEBSOCKETS("[WS-Client][handleHeader]  - cVersion: %d\n", client->cVersion);
         DEBUG_WEBSOCKETS("[WS-Client][handleHeader]  - cSessionId: %s\n", client->cSessionId.c_str());
 
+        if(client->isSocketIO && client->cSessionId.length() == 0 && clientIsConnected(client)) {
+            DEBUG_WEBSOCKETS("[WS-Client][handleHeader] still missing cSessionId try socket.io V3\n");
+            client->status = WSC_BODY;
+            return;
+        } else {
+            client->status = WSC_HEADER;
+        }
+
         bool ok = (client->cIsUpgrade && client->cIsWebsocket);
 
         if(ok) {
@@ -682,9 +841,11 @@ void WebSocketsClient::handleHeader(WSclient_t * client, String * headerLine) {
                     if(client->isSocketIO) {
                         break;
                     }
+                    // falls through
                 case 403:    ///< Forbidden
-                    // todo handle login
-                default:    ///< Server dont unterstand requrst
+                             // todo handle login
+                             // falls through
+                default:     ///< Server dont unterstand requrst
                     ok = false;
                     DEBUG_WEBSOCKETS("[WS-Client][handleHeader] serverCode is not 101 (%d)\n", client->cCode);
                     clientDisconnect(client);
@@ -712,15 +873,18 @@ void WebSocketsClient::handleHeader(WSclient_t * client, String * headerLine) {
 
             runCbEvent(WStype_CONNECTED, (uint8_t *)client->cUrl.c_str(), client->cUrl.length());
 #if(WEBSOCKETS_NETWORK_TYPE != NETWORK_ESP8266_ASYNC)
-        } else if(clientIsConnected(client) && client->isSocketIO && client->cSessionId.length() > 0) {
-            if(_client.tcp->available()) {
-                // read not needed data
-                DEBUG_WEBSOCKETS("[WS-Client][handleHeader] still data in buffer (%d), clean up.\n", _client.tcp->available());
-                while(_client.tcp->available() > 0) {
-                    _client.tcp->read();
+        } else if(client->isSocketIO) {
+            if(client->cSessionId.length() > 0) {
+                DEBUG_WEBSOCKETS("[WS-Client][handleHeader] found cSessionId\n");
+                if(clientIsConnected(client) && _client.tcp->available()) {
+                    // read not needed data
+                    DEBUG_WEBSOCKETS("[WS-Client][handleHeader] still data in buffer (%d), clean up.\n", _client.tcp->available());
+                    while(_client.tcp->available() > 0) {
+                        _client.tcp->read();
+                    }
                 }
+                sendHeader(client);
             }
-            sendHeader(client);
 #endif
         } else {
             DEBUG_WEBSOCKETS("[WS-Client][handleHeader] no Websocket connection close.\n");
@@ -757,19 +921,23 @@ void WebSocketsClient::connectedCb() {
     _client.tcp->setTimeout(WEBSOCKETS_TCP_TIMEOUT);
 #endif
 
-#if(WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266) || (WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP32)
+#if(WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266) || (WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP32) || (WEBSOCKETS_NETWORK_TYPE == NETWORK_RP2040)
     _client.tcp->setNoDelay(true);
 #endif
 
 #if defined(HAS_SSL)
-    if(_client.isSSL && _fingerprint.length()) {
+#if defined(SSL_AXTLS) || defined(ESP32)
+    if(_client.isSSL && SSL_FINGERPRINT_IS_SET) {
         if(!_client.ssl->verify(_fingerprint.c_str(), _host.c_str())) {
             DEBUG_WEBSOCKETS("[WS-Client] certificate mismatch\n");
             WebSockets::clientDisconnect(&_client, 1000);
             return;
         }
+#else
+    if(_client.isSSL && SSL_FINGERPRINT_IS_SET) {
+#endif
     } else if(_client.isSSL && !_CA_cert) {
-#if defined(wificlientbearssl_h) && !defined(USING_AXTLS) && !defined(wificlientsecure_h)
+#if defined(SSL_BARESSL)
         _client.ssl->setInsecure();
 #endif
     }
@@ -839,6 +1007,9 @@ void WebSocketsClient::handleHBPing() {
         if(sendPing()) {
             _client.lastPing     = millis();
             _client.pongReceived = false;
+        } else {
+            DEBUG_WEBSOCKETS("[WS-Client] sending HB ping failed\n");
+            WebSockets::clientDisconnect(&_client, 1000);
         }
     }
 }

src/WebSocketsClient.h

@@ -43,9 +43,25 @@ class WebSocketsClient : protected WebSockets {
     void begin(IPAddress host, uint16_t port, const char * url = "/", const char * protocol = "arduino");
 
 #if defined(HAS_SSL)
-    void beginSSL(const char * host, uint16_t port, const char * url = "/", const char * = "", const char * protocol = "arduino");
+#ifdef SSL_AXTLS
+    void beginSSL(const char * host, uint16_t port, const char * url = "/", const char * fingerprint = "", const char * protocol = "arduino");
     void beginSSL(String host, uint16_t port, String url = "/", String fingerprint = "", String protocol = "arduino");
+#else
+    void beginSSL(const char * host, uint16_t port, const char * url = "/", const uint8_t * fingerprint = NULL, const char * protocol = "arduino");
+    #if defined(SSL_BARESSL)
+    void beginSslWithCA(const char * host, uint16_t port, const char * url = "/", BearSSL::X509List * CA_cert = NULL, const char * protocol = "arduino");
+    void setSSLClientCertKey(BearSSL::X509List * clientCert = NULL, BearSSL::PrivateKey * clientPrivateKey = NULL);
+    #endif
+    void setSSLClientCertKey(const char * clientCert = NULL, const char * clientPrivateKey = NULL);
+#endif
     void beginSslWithCA(const char * host, uint16_t port, const char * url = "/", const char * CA_cert = NULL, const char * protocol = "arduino");
+#ifdef ESP32
+#if ESP_ARDUINO_VERSION >= ESP_ARDUINO_VERSION_VAL(3, 0, 4)
+    void beginSslWithBundle(const char * host, uint16_t port, const char * url = "/", const uint8_t * CA_bundle = NULL, size_t CA_bundle_size = 0, const char * protocol = "arduino");
+#else
+    void beginSslWithBundle(const char * host, uint16_t port, const char * url = "/", const uint8_t * CA_bundle = NULL, const char * protocol = "arduino");
+#endif
+#endif
 #endif
 
     void beginSocketIO(const char * host, uint16_t port, const char * url = "/socket.io/?EIO=3", const char * protocol = "arduino");
@@ -54,7 +70,11 @@ class WebSocketsClient : protected WebSockets {
 #if defined(HAS_SSL)
     void beginSocketIOSSL(const char * host, uint16_t port, const char * url = "/socket.io/?EIO=3", const char * protocol = "arduino");
     void beginSocketIOSSL(String host, uint16_t port, String url = "/socket.io/?EIO=3", String protocol = "arduino");
+
     void beginSocketIOSSLWithCA(const char * host, uint16_t port, const char * url = "/socket.io/?EIO=3", const char * CA_cert = NULL, const char * protocol = "arduino");
+#if defined(SSL_BARESSL)
+    void beginSocketIOSSLWithCA(const char * host, uint16_t port, const char * url = "/socket.io/?EIO=3", BearSSL::X509List * CA_cert = NULL, const char * protocol = "arduino");
+#endif
 #endif
 
 #if(WEBSOCKETS_NETWORK_TYPE != NETWORK_ESP8266_ASYNC)
@@ -98,8 +118,33 @@ class WebSocketsClient : protected WebSockets {
     uint16_t _port;
 
 #if defined(HAS_SSL)
+#ifdef SSL_AXTLS
     String _fingerprint;
     const char * _CA_cert;
+    const uint8_t * _CA_bundle;
+#if defined(ESP32)
+#if ESP_ARDUINO_VERSION >= ESP_ARDUINO_VERSION_VAL(3, 0, 4)
+    size_t _CA_bundle_size;
+#endif
+#endif
+#define SSL_FINGERPRINT_IS_SET (_fingerprint.length())
+#define SSL_FINGERPRINT_NULL ""
+#else
+    const uint8_t * _fingerprint;
+    #if defined(SSL_BARESSL)
+    BearSSL::X509List * _CA_cert;
+    BearSSL::X509List * _client_cert;
+    BearSSL::PrivateKey * _client_key;
+    #endif
+#define SSL_FINGERPRINT_IS_SET (_fingerprint != NULL)
+#define SSL_FINGERPRINT_NULL NULL
+#endif
+
+#if(WEBSOCKETS_NETWORK_TYPE == NETWORK_SAMD_SEED) || (WEBSOCKETS_NETWORK_TYPE == NETWORK_WIFI_NINA)
+    const char * _CA_cert;
+    const uint8_t * _CA_bundle;
+#endif
+
 #endif
     WSclient_t _client;
 
@@ -107,6 +152,7 @@ class WebSocketsClient : protected WebSockets {
 
     unsigned long _lastConnectionFail;
     unsigned long _reconnectInterval;
+    unsigned long _lastHeaderSent;
 
     void messageReceived(WSclient_t * client, WSopcode_t opcode, uint8_t * payload, size_t length, bool fin);
 
@@ -130,11 +176,11 @@ class WebSocketsClient : protected WebSockets {
 #endif
 
     /**
-         * called for sending a Event to the app
-         * @param type WStype_t
-         * @param payload uint8_t *
-         * @param length size_t
-         */
+     * called for sending a Event to the app
+     * @param type WStype_t
+     * @param payload uint8_t *
+     * @param length size_t
+     */
     virtual void runCbEvent(WStype_t type, uint8_t * payload, size_t length) {
         if(_cbEvent) {
             _cbEvent(type, payload, length);

src/WebSocketsServer.cpp

@@ -25,8 +25,7 @@
 #include "WebSockets.h"
 #include "WebSocketsServer.h"
 
-WebSocketsServer::WebSocketsServer(uint16_t port, String origin, String protocol) {
-    _port                   = port;
+WebSocketsServerCore::WebSocketsServerCore(const String & origin, const String & protocol) {
     _origin                 = origin;
     _protocol               = protocol;
     _runnning               = false;
@@ -34,25 +33,28 @@ WebSocketsServer::WebSocketsServer(uint16_t port, String origin, String protocol
     _pongTimeout            = 0;
     _disconnectTimeoutCount = 0;
 
-    _server = new WEBSOCKETS_NETWORK_SERVER_CLASS(port);
-
-#if(WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266_ASYNC)
-    _server->onClient([](void * s, AsyncClient * c) {
-        ((WebSocketsServer *)s)->newClient(new AsyncTCPbuffer(c));
-    },
-        this);
-#endif
-
     _cbEvent = NULL;
 
     _httpHeaderValidationFunc = NULL;
     _mandatoryHttpHeaders     = NULL;
     _mandatoryHttpHeaderCount = 0;
-
-    memset(&_clients[0], 0x00, (sizeof(WSclient_t) * WEBSOCKETS_SERVER_CLIENT_MAX));
 }
 
-WebSocketsServer::~WebSocketsServer() {
+WebSocketsServer::WebSocketsServer(uint16_t port, const String & origin, const String & protocol)
+    : WebSocketsServerCore(origin, protocol) {
+    _port = port;
+
+    _server = new WEBSOCKETS_NETWORK_SERVER_CLASS(port);
+
+#if(WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266_ASYNC)
+    _server->onClient([](void * s, AsyncClient * c) {
+        ((WebSocketsServerCore *)s)->newClient(new AsyncTCPbuffer(c));
+    },
+        this);
+#endif
+}
+
+WebSocketsServerCore::~WebSocketsServerCore() {
     // disconnect all clients
     close();
 
@@ -62,42 +64,25 @@ WebSocketsServer::~WebSocketsServer() {
     _mandatoryHttpHeaderCount = 0;
 }
 
+WebSocketsServer::~WebSocketsServer() {
+    #if(WEBSOCKETS_NETWORK_TYPE == NETWORK_WIFI_NINA) || (WEBSOCKETS_NETWORK_TYPE == NETWORK_SAMD_SEED)
+        // does not support delete (no destructor)
+    #else
+        delete _server;
+    #endif    
+}
+
 /**
  * called to initialize the Websocket server
  */
-void WebSocketsServer::begin(void) {
-    WSclient_t * client;
-
-    // init client storage
-    for(uint8_t i = 0; i < WEBSOCKETS_SERVER_CLIENT_MAX; i++) {
-        client = &_clients[i];
-
-        client->num    = i;
-        client->status = WSC_NOT_CONNECTED;
-        client->tcp    = NULL;
-#if(WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266) || (WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP32)
-        client->isSSL = false;
-        client->ssl   = NULL;
-#endif
-        client->cUrl         = "";
-        client->cCode        = 0;
-        client->cKey         = "";
-        client->cProtocol    = "";
-        client->cVersion     = 0;
-        client->cIsUpgrade   = false;
-        client->cIsWebsocket = false;
-
-        client->base64Authorization = "";
-
-        client->cWsRXsize = 0;
-
-#if(WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266_ASYNC)
-        client->cHttpLine = "";
-#endif
-
-        client->pingInterval           = _pingInterval;
-        client->pongTimeout            = _pongTimeout;
-        client->disconnectTimeoutCount = _disconnectTimeoutCount;
+void WebSocketsServerCore::begin(void) {
+    // adjust clients storage:
+    // _clients[i]'s constructor are already called,
+    // all its members are initialized to their default value,
+    // except the ones explicitly detailed in WSclient_t() constructor.
+    // Then we need to initialize some members to non-trivial values:
+    for(int i = 0; i < WEBSOCKETS_SERVER_CLIENT_MAX; i++) {
+        _clients[i].init(i, _pingInterval, _pongTimeout, _disconnectTimeoutCount);
     }
 
 #ifdef ESP8266
@@ -105,49 +90,34 @@ void WebSocketsServer::begin(void) {
 #elif defined(ESP32)
 #define DR_REG_RNG_BASE 0x3ff75144
     randomSeed(READ_PERI_REG(DR_REG_RNG_BASE));
+#elif defined(ARDUINO_ARCH_RP2040)
+    randomSeed(rp2040.hwrand32());
 #else
     // TODO find better seed
     randomSeed(millis());
 #endif
 
     _runnning = true;
-    _server->begin();
 
-    DEBUG_WEBSOCKETS("[WS-Server] Server Started.\n");
+    DEBUG_WEBSOCKETS("[WS-Server] Websocket Version: " WEBSOCKETS_VERSION "\n");
 }
 
-void WebSocketsServer::close(void) {
+void WebSocketsServerCore::close(void) {
     _runnning = false;
     disconnect();
 
-#if(WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266)
-    _server->close();
-#elif(WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP32) || (WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266_ASYNC)
-    _server->end();
-#else
-    // TODO how to close server?
-#endif
-}
-
-#if(WEBSOCKETS_NETWORK_TYPE != NETWORK_ESP8266_ASYNC)
-/**
- * called in arduino loop
- */
-void WebSocketsServer::loop(void) {
-    if(_runnning) {
-        WEBSOCKETS_YIELD();
-        handleNewClients();
-        WEBSOCKETS_YIELD();
-        handleClientData();
+    // restore _clients[] to their initial state
+    // before next call to ::begin()
+    for(int i = 0; i < WEBSOCKETS_SERVER_CLIENT_MAX; i++) {
+        _clients[i] = WSclient_t();
     }
 }
-#endif
 
 /**
  * set callback function
  * @param cbEvent WebSocketServerEvent
  */
-void WebSocketsServer::onEvent(WebSocketServerEvent cbEvent) {
+void WebSocketsServerCore::onEvent(WebSocketServerEvent cbEvent) {
     _cbEvent = cbEvent;
 }
 
@@ -157,7 +127,7 @@ void WebSocketsServer::onEvent(WebSocketServerEvent cbEvent) {
  * @param mandatoryHttpHeaders[] const char* ///< the array of named http headers considered to be mandatory / must be present in order for websocket upgrade to succeed
  * @param mandatoryHttpHeaderCount size_t ///< the number of items in the mandatoryHttpHeaders array
  */
-void WebSocketsServer::onValidateHttpHeader(
+void WebSocketsServerCore::onValidateHttpHeader(
     WebSocketServerHttpHeaderValFunc validationFunc,
     const char * mandatoryHttpHeaders[],
     size_t mandatoryHttpHeaderCount) {
@@ -182,7 +152,7 @@ void WebSocketsServer::onValidateHttpHeader(
  * @param headerToPayload bool  (see sendFrame for more details)
  * @return true if ok
  */
-bool WebSocketsServer::sendTXT(uint8_t num, uint8_t * payload, size_t length, bool headerToPayload) {
+bool WebSocketsServerCore::sendTXT(uint8_t num, uint8_t * payload, size_t length, bool headerToPayload) {
     if(num >= WEBSOCKETS_SERVER_CLIENT_MAX) {
         return false;
     }
@@ -196,19 +166,19 @@ bool WebSocketsServer::sendTXT(uint8_t num, uint8_t * payload, size_t length, bo
     return false;
 }
 
-bool WebSocketsServer::sendTXT(uint8_t num, const uint8_t * payload, size_t length) {
+bool WebSocketsServerCore::sendTXT(uint8_t num, const uint8_t * payload, size_t length) {
     return sendTXT(num, (uint8_t *)payload, length);
 }
 
-bool WebSocketsServer::sendTXT(uint8_t num, char * payload, size_t length, bool headerToPayload) {
+bool WebSocketsServerCore::sendTXT(uint8_t num, char * payload, size_t length, bool headerToPayload) {
     return sendTXT(num, (uint8_t *)payload, length, headerToPayload);
 }
 
-bool WebSocketsServer::sendTXT(uint8_t num, const char * payload, size_t length) {
+bool WebSocketsServerCore::sendTXT(uint8_t num, const char * payload, size_t length) {
     return sendTXT(num, (uint8_t *)payload, length);
 }
 
-bool WebSocketsServer::sendTXT(uint8_t num, String & payload) {
+bool WebSocketsServerCore::sendTXT(uint8_t num, String & payload) {
     return sendTXT(num, (uint8_t *)payload.c_str(), payload.length());
 }
 
@@ -219,7 +189,7 @@ bool WebSocketsServer::sendTXT(uint8_t num, String & payload) {
  * @param headerToPayload bool  (see sendFrame for more details)
  * @return true if ok
  */
-bool WebSocketsServer::broadcastTXT(uint8_t * payload, size_t length, bool headerToPayload) {
+bool WebSocketsServerCore::broadcastTXT(uint8_t * payload, size_t length, bool headerToPayload) {
     WSclient_t * client;
     bool ret = true;
     if(length == 0) {
@@ -238,19 +208,19 @@ bool WebSocketsServer::broadcastTXT(uint8_t * payload, size_t length, bool heade
     return ret;
 }
 
-bool WebSocketsServer::broadcastTXT(const uint8_t * payload, size_t length) {
+bool WebSocketsServerCore::broadcastTXT(const uint8_t * payload, size_t length) {
     return broadcastTXT((uint8_t *)payload, length);
 }
 
-bool WebSocketsServer::broadcastTXT(char * payload, size_t length, bool headerToPayload) {
+bool WebSocketsServerCore::broadcastTXT(char * payload, size_t length, bool headerToPayload) {
     return broadcastTXT((uint8_t *)payload, length, headerToPayload);
 }
 
-bool WebSocketsServer::broadcastTXT(const char * payload, size_t length) {
+bool WebSocketsServerCore::broadcastTXT(const char * payload, size_t length) {
     return broadcastTXT((uint8_t *)payload, length);
 }
 
-bool WebSocketsServer::broadcastTXT(String & payload) {
+bool WebSocketsServerCore::broadcastTXT(String & payload) {
     return broadcastTXT((uint8_t *)payload.c_str(), payload.length());
 }
 
@@ -262,7 +232,7 @@ bool WebSocketsServer::broadcastTXT(String & payload) {
  * @param headerToPayload bool  (see sendFrame for more details)
  * @return true if ok
  */
-bool WebSocketsServer::sendBIN(uint8_t num, uint8_t * payload, size_t length, bool headerToPayload) {
+bool WebSocketsServerCore::sendBIN(uint8_t num, uint8_t * payload, size_t length, bool headerToPayload) {
     if(num >= WEBSOCKETS_SERVER_CLIENT_MAX) {
         return false;
     }
@@ -273,7 +243,7 @@ bool WebSocketsServer::sendBIN(uint8_t num, uint8_t * payload, size_t length, bo
     return false;
 }
 
-bool WebSocketsServer::sendBIN(uint8_t num, const uint8_t * payload, size_t length) {
+bool WebSocketsServerCore::sendBIN(uint8_t num, const uint8_t * payload, size_t length) {
     return sendBIN(num, (uint8_t *)payload, length);
 }
 
@@ -284,7 +254,7 @@ bool WebSocketsServer::sendBIN(uint8_t num, const uint8_t * payload, size_t leng
  * @param headerToPayload bool  (see sendFrame for more details)
  * @return true if ok
  */
-bool WebSocketsServer::broadcastBIN(uint8_t * payload, size_t length, bool headerToPayload) {
+bool WebSocketsServerCore::broadcastBIN(uint8_t * payload, size_t length, bool headerToPayload) {
     WSclient_t * client;
     bool ret = true;
     for(uint8_t i = 0; i < WEBSOCKETS_SERVER_CLIENT_MAX; i++) {
@@ -299,7 +269,7 @@ bool WebSocketsServer::broadcastBIN(uint8_t * payload, size_t length, bool heade
     return ret;
 }
 
-bool WebSocketsServer::broadcastBIN(const uint8_t * payload, size_t length) {
+bool WebSocketsServerCore::broadcastBIN(const uint8_t * payload, size_t length) {
     return broadcastBIN((uint8_t *)payload, length);
 }
 
@@ -310,7 +280,7 @@ bool WebSocketsServer::broadcastBIN(const uint8_t * payload, size_t length) {
  * @param length size_t
  * @return true if ping is send out
  */
-bool WebSocketsServer::sendPing(uint8_t num, uint8_t * payload, size_t length) {
+bool WebSocketsServerCore::sendPing(uint8_t num, uint8_t * payload, size_t length) {
     if(num >= WEBSOCKETS_SERVER_CLIENT_MAX) {
         return false;
     }
@@ -321,7 +291,7 @@ bool WebSocketsServer::sendPing(uint8_t num, uint8_t * payload, size_t length) {
     return false;
 }
 
-bool WebSocketsServer::sendPing(uint8_t num, String & payload) {
+bool WebSocketsServerCore::sendPing(uint8_t num, String & payload) {
     return sendPing(num, (uint8_t *)payload.c_str(), payload.length());
 }
 
@@ -331,7 +301,7 @@ bool WebSocketsServer::sendPing(uint8_t num, String & payload) {
  * @param length size_t
  * @return true if ping is send out
  */
-bool WebSocketsServer::broadcastPing(uint8_t * payload, size_t length) {
+bool WebSocketsServerCore::broadcastPing(uint8_t * payload, size_t length) {
     WSclient_t * client;
     bool ret = true;
     for(uint8_t i = 0; i < WEBSOCKETS_SERVER_CLIENT_MAX; i++) {
@@ -346,14 +316,14 @@ bool WebSocketsServer::broadcastPing(uint8_t * payload, size_t length) {
     return ret;
 }
 
-bool WebSocketsServer::broadcastPing(String & payload) {
+bool WebSocketsServerCore::broadcastPing(String & payload) {
     return broadcastPing((uint8_t *)payload.c_str(), payload.length());
 }
 
 /**
  * disconnect all clients
  */
-void WebSocketsServer::disconnect(void) {
+void WebSocketsServerCore::disconnect(void) {
     WSclient_t * client;
     for(uint8_t i = 0; i < WEBSOCKETS_SERVER_CLIENT_MAX; i++) {
         client = &_clients[i];
@@ -367,7 +337,7 @@ void WebSocketsServer::disconnect(void) {
  * disconnect one client
  * @param num uint8_t client id
  */
-void WebSocketsServer::disconnect(uint8_t num) {
+void WebSocketsServerCore::disconnect(uint8_t num) {
     if(num >= WEBSOCKETS_SERVER_CLIENT_MAX) {
         return;
     }
@@ -382,7 +352,7 @@ void WebSocketsServer::disconnect(uint8_t num) {
  * @param user const char *
  * @param password const char *
  */
-void WebSocketsServer::setAuthorization(const char * user, const char * password) {
+void WebSocketsServerCore::setAuthorization(const char * user, const char * password) {
     if(user && password) {
         String auth = user;
         auth += ":";
@@ -395,7 +365,7 @@ void WebSocketsServer::setAuthorization(const char * user, const char * password
  * set the Authorizatio for the http request
  * @param auth const char * base64
  */
-void WebSocketsServer::setAuthorization(const char * auth) {
+void WebSocketsServerCore::setAuthorization(const char * auth) {
     if(auth) {
         _base64Authorization = auth;
     }
@@ -405,7 +375,7 @@ void WebSocketsServer::setAuthorization(const char * auth) {
  * count the connected clients (optional ping them)
  * @param ping bool ping the connected clients
  */
-int WebSocketsServer::connectedClients(bool ping) {
+int WebSocketsServerCore::connectedClients(bool ping) {
     WSclient_t * client;
     int count = 0;
     for(uint8_t i = 0; i < WEBSOCKETS_SERVER_CLIENT_MAX; i++) {
@@ -419,13 +389,25 @@ int WebSocketsServer::connectedClients(bool ping) {
     return count;
 }
 
-#if(WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266) || (WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266_ASYNC) || (WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP32)
+/**
+ * see if one client is connected
+ * @param num uint8_t client id
+ */
+bool WebSocketsServerCore::clientIsConnected(uint8_t num) {
+    if(num >= WEBSOCKETS_SERVER_CLIENT_MAX) {
+        return false;
+    }
+    WSclient_t * client = &_clients[num];
+    return clientIsConnected(client);
+}
+
+#if(WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266) || (WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266_ASYNC) || (WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP32) || (WEBSOCKETS_NETWORK_TYPE == NETWORK_RP2040)
 /**
  * get an IP for a client
  * @param num uint8_t client id
  * @return IPAddress
  */
-IPAddress WebSocketsServer::remoteIP(uint8_t num) {
+IPAddress WebSocketsServerCore::remoteIP(uint8_t num) {
     if(num < WEBSOCKETS_SERVER_CLIENT_MAX) {
         WSclient_t * client = &_clients[num];
         if(clientIsConnected(client)) {
@@ -437,22 +419,30 @@ IPAddress WebSocketsServer::remoteIP(uint8_t num) {
 }
 #endif
 
-//#################################################################################
-//#################################################################################
-//#################################################################################
+// #################################################################################
+// #################################################################################
+// #################################################################################
 
 /**
  * handle new client connection
  * @param client
  */
-bool WebSocketsServer::newClient(WEBSOCKETS_NETWORK_CLASS * TCPclient) {
+WSclient_t * WebSocketsServerCore::newClient(WEBSOCKETS_NETWORK_CLASS * TCPclient) {
     WSclient_t * client;
     // search free list entry for client
     for(uint8_t i = 0; i < WEBSOCKETS_SERVER_CLIENT_MAX; i++) {
         client = &_clients[i];
 
-        // state is not connected or tcp connection is lost
-        if(!clientIsConnected(client)) {
+        // look for match to existing socket before creating a new one
+        if(clientIsConnected(client)) {
+#if(WEBSOCKETS_NETWORK_TYPE == NETWORK_W5100)
+            // Check to see if it is the same socket - if so, return it
+            if(client->tcp->getSocketNumber() == TCPclient->getSocketNumber()) {
+                return client;
+            }
+#endif
+        } else {
+            // state is not connected or tcp connection is lost
             client->tcp = TCPclient;
 
 #if(WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266) || (WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP32)
@@ -464,7 +454,7 @@ bool WebSocketsServer::newClient(WEBSOCKETS_NETWORK_CLASS * TCPclient) {
             client->tcp->setTimeout(WEBSOCKETS_TCP_TIMEOUT);
 #endif
             client->status = WSC_HEADER;
-#if(WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266) || (WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266_ASYNC) || (WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP32)
+#if(WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266) || (WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266_ASYNC) || (WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP32) || (WEBSOCKETS_NETWORK_TYPE == NETWORK_RP2040)
 #ifndef NODEBUG_WEBSOCKETS
             IPAddress ip = client->tcp->remoteIP();
 #endif
@@ -474,7 +464,7 @@ bool WebSocketsServer::newClient(WEBSOCKETS_NETWORK_CLASS * TCPclient) {
 #endif
 
 #if(WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266_ASYNC)
-            client->tcp->onDisconnect(std::bind([](WebSocketsServer * server, AsyncTCPbuffer * obj, WSclient_t * client) -> bool {
+            client->tcp->onDisconnect(std::bind([](WebSocketsServerCore * server, AsyncTCPbuffer * obj, WSclient_t * client) -> bool {
                 DEBUG_WEBSOCKETS("[WS-Server][%d] Disconnect client\n", client->num);
 
                 AsyncTCPbuffer ** sl = &server->_clients[client->num].tcp;
@@ -486,7 +476,7 @@ bool WebSocketsServer::newClient(WEBSOCKETS_NETWORK_CLASS * TCPclient) {
             },
                 this, std::placeholders::_1, client));
 
-            client->tcp->readStringUntil('\n', &(client->cHttpLine), std::bind(&WebSocketsServer::handleHeader, this, client, &(client->cHttpLine)));
+            client->tcp->readStringUntil('\n', &(client->cHttpLine), std::bind(&WebSocketsServerCore::handleHeader, this, client, &(client->cHttpLine)));
 #endif
 
             client->pingInterval           = _pingInterval;
@@ -495,11 +485,11 @@ bool WebSocketsServer::newClient(WEBSOCKETS_NETWORK_CLASS * TCPclient) {
             client->lastPing               = millis();
             client->pongReceived           = false;
 
-            return true;
+            return client;
             break;
         }
     }
-    return false;
+    return nullptr;
 }
 
 /**
@@ -509,7 +499,7 @@ bool WebSocketsServer::newClient(WEBSOCKETS_NETWORK_CLASS * TCPclient) {
  * @param payload  uint8_t *
  * @param length size_t
  */
-void WebSocketsServer::messageReceived(WSclient_t * client, WSopcode_t opcode, uint8_t * payload, size_t length, bool fin) {
+void WebSocketsServerCore::messageReceived(WSclient_t * client, WSopcode_t opcode, uint8_t * payload, size_t length, bool fin) {
     WStype_t type = WStype_ERROR;
 
     switch(opcode) {
@@ -536,12 +526,38 @@ void WebSocketsServer::messageReceived(WSclient_t * client, WSopcode_t opcode, u
     runCbEvent(client->num, type, payload, length);
 }
 
+/**
+ * Discard a native client
+ * @param client WSclient_t *  ptr to the client struct contaning the native client "->tcp"
+ */
+void WebSocketsServerCore::dropNativeClient(WSclient_t * client) {
+    if(!client) {
+        return;
+    }
+    if(client->tcp) {
+        if(client->tcp->connected()) {
+#if(WEBSOCKETS_NETWORK_TYPE != NETWORK_ESP8266_ASYNC) && (WEBSOCKETS_NETWORK_TYPE != NETWORK_ESP32) && (WEBSOCKETS_NETWORK_TYPE != NETWORK_RP2040)
+            client->tcp->flush();
+#endif
+            client->tcp->stop();
+        }
+#if(WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266_ASYNC)
+        client->status = WSC_NOT_CONNECTED;
+#elif(WEBSOCKETS_NETWORK_TYPE == NETWORK_WIFI_NINA) || (WEBSOCKETS_NETWORK_TYPE == NETWORK_SAMD_SEED)
+        // does not support delete (no destructor)
+#else
+        delete client->tcp;
+#endif
+        client->tcp = NULL;
+    }
+}
+
 /**
  * Disconnect an client
  * @param client WSclient_t *  ptr to the client struct
  */
-void WebSocketsServer::clientDisconnect(WSclient_t * client) {
-#if(WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266) || (WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP32)
+void WebSocketsServerCore::clientDisconnect(WSclient_t * client) {
+#if(WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266) || (WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP32) || (WEBSOCKETS_NETWORK_TYPE == NETWORK_RP2040)
     if(client->isSSL && client->ssl) {
         if(client->ssl->connected()) {
             client->ssl->flush();
@@ -553,20 +569,7 @@ void WebSocketsServer::clientDisconnect(WSclient_t * client) {
     }
 #endif
 
-    if(client->tcp) {
-        if(client->tcp->connected()) {
-#if(WEBSOCKETS_NETWORK_TYPE != NETWORK_ESP8266_ASYNC)
-            client->tcp->flush();
-#endif
-            client->tcp->stop();
-        }
-#if(WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266_ASYNC)
-        client->status = WSC_NOT_CONNECTED;
-#else
-        delete client->tcp;
-#endif
-        client->tcp = NULL;
-    }
+    dropNativeClient(client);
 
     client->cUrl         = "";
     client->cKey         = "";
@@ -593,7 +596,7 @@ void WebSocketsServer::clientDisconnect(WSclient_t * client) {
  * @param client WSclient_t *  ptr to the client struct
  * @return true = connected
  */
-bool WebSocketsServer::clientIsConnected(WSclient_t * client) {
+bool WebSocketsServerCore::clientIsConnected(WSclient_t * client) {
     if(!client->tcp) {
         return false;
     }
@@ -620,44 +623,58 @@ bool WebSocketsServer::clientIsConnected(WSclient_t * client) {
     return false;
 }
 #if(WEBSOCKETS_NETWORK_TYPE != NETWORK_ESP8266_ASYNC)
+/**
+ * Handle incoming Connection Request
+ */
+WSclient_t * WebSocketsServerCore::handleNewClient(WEBSOCKETS_NETWORK_CLASS * tcpClient) {
+    WSclient_t * client = newClient(tcpClient);
+
+    if(!client) {
+        // no free space to handle client
+#if(WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266) || (WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP32) || (WEBSOCKETS_NETWORK_TYPE == NETWORK_RP2040)
+#ifndef NODEBUG_WEBSOCKETS
+        IPAddress ip = tcpClient->remoteIP();
+#endif
+        DEBUG_WEBSOCKETS("[WS-Server] no free space new client from %d.%d.%d.%d\n", ip[0], ip[1], ip[2], ip[3]);
+#else
+        DEBUG_WEBSOCKETS("[WS-Server] no free space new client\n");
+#endif
+        // no client! => create dummy!
+        WSclient_t dummy = WSclient_t();
+        client           = &dummy;
+        client->tcp      = tcpClient;
+        dropNativeClient(client);
+        return nullptr;
+    }
+
+    WEBSOCKETS_YIELD();
+
+    return client;
+}
+
 /**
  * Handle incoming Connection Request
  */
 void WebSocketsServer::handleNewClients(void) {
-#if(WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266) || (WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP32)
+#if(WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266) || (WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP32) || (WEBSOCKETS_NETWORK_TYPE == NETWORK_RP2040)
     while(_server->hasClient()) {
 #endif
-        bool ok = false;
 
-#if(WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266) || (WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP32)
         // store new connection
-        WEBSOCKETS_NETWORK_CLASS * tcpClient = new WEBSOCKETS_NETWORK_CLASS(_server->available());
-#else
-    WEBSOCKETS_NETWORK_CLASS * tcpClient = new WEBSOCKETS_NETWORK_CLASS(_server->available());
-#endif
+        #if(WEBSOCKETS_NETWORK_TYPE == NETWORK_WIFI_NINA)
+            WEBSOCKETS_NETWORK_CLASS * tcpClient = new WEBSOCKETS_NETWORK_CLASS(_server->available());
+        #else
+            WEBSOCKETS_NETWORK_CLASS * tcpClient = new WEBSOCKETS_NETWORK_CLASS(_server->accept());
+        #endif
 
         if(!tcpClient) {
             DEBUG_WEBSOCKETS("[WS-Client] creating Network class failed!");
             return;
         }
 
-        ok = newClient(tcpClient);
+        handleNewClient(tcpClient);
 
-        if(!ok) {
-            // no free space to handle client
-#if(WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266) || (WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP32)
-#ifndef NODEBUG_WEBSOCKETS
-            IPAddress ip = tcpClient->remoteIP();
-#endif
-            DEBUG_WEBSOCKETS("[WS-Server] no free space new client from %d.%d.%d.%d\n", ip[0], ip[1], ip[2], ip[3]);
-#else
-        DEBUG_WEBSOCKETS("[WS-Server] no free space new client\n");
-#endif
-            tcpClient->stop();
-        }
-
-        WEBSOCKETS_YIELD();
-#if(WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266) || (WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP32)
+#if(WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266) || (WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP32) || (WEBSOCKETS_NETWORK_TYPE == NETWORK_RP2040)
     }
 #endif
 }
@@ -665,14 +682,14 @@ void WebSocketsServer::handleNewClients(void) {
 /**
  * Handel incomming data from Client
  */
-void WebSocketsServer::handleClientData(void) {
+void WebSocketsServerCore::handleClientData(void) {
     WSclient_t * client;
     for(uint8_t i = 0; i < WEBSOCKETS_SERVER_CLIENT_MAX; i++) {
         client = &_clients[i];
         if(clientIsConnected(client)) {
             int len = client->tcp->available();
             if(len > 0) {
-                //DEBUG_WEBSOCKETS("[WS-Server][%d][handleClientData] len: %d\n", client->num, len);
+                // DEBUG_WEBSOCKETS("[WS-Server][%d][handleClientData] len: %d\n", client->num, len);
                 switch(client->status) {
                     case WSC_HEADER: {
                         String headerLine = client->tcp->readStringUntil('\n');
@@ -682,6 +699,7 @@ void WebSocketsServer::handleClientData(void) {
                         WebSockets::handleWebsocket(client);
                         break;
                     default:
+                        DEBUG_WEBSOCKETS("[WS-Server][%d][handleClientData] unknown client status %d\n", client->num, client->status);
                         WebSockets::clientDisconnect(client, 1002);
                         break;
                 }
@@ -699,7 +717,7 @@ void WebSocketsServer::handleClientData(void) {
  * returns an indicator whether the given named header exists in the configured _mandatoryHttpHeaders collection
  * @param headerName String ///< the name of the header being checked
  */
-bool WebSocketsServer::hasMandatoryHeader(String headerName) {
+bool WebSocketsServerCore::hasMandatoryHeader(String headerName) {
     for(size_t i = 0; i < _mandatoryHttpHeaderCount; i++) {
         if(_mandatoryHttpHeaders[i].equalsIgnoreCase(headerName))
             return true;
@@ -712,7 +730,7 @@ bool WebSocketsServer::hasMandatoryHeader(String headerName) {
  * @param client WSclient_t * ///< pointer to the client struct
  * @param headerLine String ///< the header being read / processed
  */
-void WebSocketsServer::handleHeader(WSclient_t * client, String * headerLine) {
+void WebSocketsServerCore::handleHeader(WSclient_t * client, String * headerLine) {
     static const char * NEW_LINE = "\r\n";
 
     headerLine->trim();    // remove \r
@@ -725,7 +743,7 @@ void WebSocketsServer::handleHeader(WSclient_t * client, String * headerLine) {
             // cut URL out
             client->cUrl = headerLine->substring(4, headerLine->indexOf(' ', 4));
 
-            //reset non-websocket http header validation state for this client
+            // reset non-websocket http header validation state for this client
             client->cHttpHeadersValid      = true;
             client->cMandatoryHeadersCount = 0;
 
@@ -771,7 +789,7 @@ void WebSocketsServer::handleHeader(WSclient_t * client, String * headerLine) {
 
         (*headerLine) = "";
 #if(WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266_ASYNC)
-        client->tcp->readStringUntil('\n', &(client->cHttpLine), std::bind(&WebSocketsServer::handleHeader, this, client, &(client->cHttpLine)));
+        client->tcp->readStringUntil('\n', &(client->cHttpLine), std::bind(&WebSocketsServerCore::handleHeader, this, client, &(client->cHttpLine)));
 #endif
     } else {
         DEBUG_WEBSOCKETS("[WS-Server][%d][handleHeader] Header read fin.\n", client->num);
@@ -868,7 +886,7 @@ void WebSocketsServer::handleHeader(WSclient_t * client, String * headerLine) {
 /**
  * send heartbeat ping to server in set intervals
  */
-void WebSocketsServer::handleHBPing(WSclient_t * client) {
+void WebSocketsServerCore::handleHBPing(WSclient_t * client) {
     if(client->pingInterval == 0)
         return;
     uint32_t pi = millis() - client->lastPing;
@@ -887,7 +905,7 @@ void WebSocketsServer::handleHBPing(WSclient_t * client) {
  * @param pongTimeout uint32_t millis after which pong should timout if not received
  * @param disconnectTimeoutCount uint8_t how many timeouts before disconnect, 0=> do not disconnect
  */
-void WebSocketsServer::enableHeartbeat(uint32_t pingInterval, uint32_t pongTimeout, uint8_t disconnectTimeoutCount) {
+void WebSocketsServerCore::enableHeartbeat(uint32_t pingInterval, uint32_t pongTimeout, uint8_t disconnectTimeoutCount) {
     _pingInterval           = pingInterval;
     _pongTimeout            = pongTimeout;
     _disconnectTimeoutCount = disconnectTimeoutCount;
@@ -902,7 +920,7 @@ void WebSocketsServer::enableHeartbeat(uint32_t pingInterval, uint32_t pongTimeo
 /**
  * disable ping/pong heartbeat process
  */
-void WebSocketsServer::disableHeartbeat() {
+void WebSocketsServerCore::disableHeartbeat() {
     _pingInterval = 0;
 
     WSclient_t * client;
@@ -910,4 +928,51 @@ void WebSocketsServer::disableHeartbeat() {
         client               = &_clients[i];
         client->pingInterval = 0;
     }
-}
+}
+
+////////////////////
+// WebSocketServer
+
+/**
+ * called to initialize the Websocket server
+ */
+void WebSocketsServer::begin(void) {
+    WebSocketsServerCore::begin();
+    _server->begin();
+
+    DEBUG_WEBSOCKETS("[WS-Server] Server Started.\n");
+}
+
+void WebSocketsServer::close(void) {
+    WebSocketsServerCore::close();
+#if(WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266) || (WEBSOCKETS_NETWORK_TYPE == NETWORK_RP2040)
+    _server->close();
+#elif(WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP32) || (WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266_ASYNC)
+    _server->end();
+#else
+    // TODO how to close server?
+#endif
+}
+
+#if(WEBSOCKETS_NETWORK_TYPE != NETWORK_ESP8266_ASYNC)
+/**
+ * called in arduino loop
+ */
+void WebSocketsServerCore::loop(void) {
+    if(_runnning) {
+        WEBSOCKETS_YIELD();
+        handleClientData();
+    }
+}
+
+/**
+ * called in arduino loop
+ */
+void WebSocketsServer::loop(void) {
+    if(_runnning) {
+        WEBSOCKETS_YIELD();
+        handleNewClients();
+        WebSocketsServerCore::loop();
+    }
+}
+#endif

src/WebSocketsServer.h

@@ -31,8 +31,14 @@
 #define WEBSOCKETS_SERVER_CLIENT_MAX (5)
 #endif
 
-class WebSocketsServer : protected WebSockets {
+class WebSocketsServerCore : protected WebSockets {
   public:
+    WebSocketsServerCore(const String & origin = "", const String & protocol = "arduino");
+    virtual ~WebSocketsServerCore(void);
+
+    void begin(void);
+    void close(void);
+
 #ifdef __AVR__
     typedef void (*WebSocketServerEvent)(uint8_t num, WStype_t type, uint8_t * payload, size_t length);
     typedef bool (*WebSocketServerHttpHeaderValFunc)(String headerName, String headerValue);
@@ -41,19 +47,6 @@ class WebSocketsServer : protected WebSockets {
     typedef std::function<bool(String headerName, String headerValue)> WebSocketServerHttpHeaderValFunc;
 #endif
 
-    WebSocketsServer(uint16_t port, String origin = "", String protocol = "arduino");
-    virtual ~WebSocketsServer(void);
-
-    void begin(void);
-    void close(void);
-
-#if(WEBSOCKETS_NETWORK_TYPE != NETWORK_ESP8266_ASYNC)
-    void loop(void);
-#else
-    // Async interface not need a loop call
-    void loop(void) __attribute__((deprecated)) {}
-#endif
-
     void onEvent(WebSocketServerEvent cbEvent);
     void onValidateHttpHeader(
         WebSocketServerHttpHeaderValFunc validationFunc,
@@ -92,23 +85,28 @@ class WebSocketsServer : protected WebSockets {
 
     int connectedClients(bool ping = false);
 
+    bool clientIsConnected(uint8_t num);
+
     void enableHeartbeat(uint32_t pingInterval, uint32_t pongTimeout, uint8_t disconnectTimeoutCount);
     void disableHeartbeat();
 
-#if(WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266) || (WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266_ASYNC) || (WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP32)
+#if(WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266) || (WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266_ASYNC) || (WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP32) || (WEBSOCKETS_NETWORK_TYPE == NETWORK_RP2040)
     IPAddress remoteIP(uint8_t num);
 #endif
 
+#if(WEBSOCKETS_NETWORK_TYPE != NETWORK_ESP8266_ASYNC)
+    void loop(void);    // handle client data only
+#endif
+
+    WSclient_t * newClient(WEBSOCKETS_NETWORK_CLASS * TCPclient);
+
   protected:
-    uint16_t _port;
     String _origin;
     String _protocol;
     String _base64Authorization;    ///< Base64 encoded Auth request
     String * _mandatoryHttpHeaders;
     size_t _mandatoryHttpHeaderCount;
 
-    WEBSOCKETS_NETWORK_SERVER_CLASS * _server;
-
     WSclient_t _clients[WEBSOCKETS_SERVER_CLIENT_MAX];
 
     WebSocketServerEvent _cbEvent;
@@ -120,15 +118,12 @@ class WebSocketsServer : protected WebSockets {
     uint32_t _pongTimeout;
     uint8_t _disconnectTimeoutCount;
 
-    bool newClient(WEBSOCKETS_NETWORK_CLASS * TCPclient);
-
     void messageReceived(WSclient_t * client, WSopcode_t opcode, uint8_t * payload, size_t length, bool fin);
 
     void clientDisconnect(WSclient_t * client);
     bool clientIsConnected(WSclient_t * client);
 
 #if(WEBSOCKETS_NETWORK_TYPE != NETWORK_ESP8266_ASYNC)
-    void handleNewClients(void);
     void handleClientData(void);
 #endif
 
@@ -137,10 +132,10 @@ class WebSocketsServer : protected WebSockets {
     void handleHBPing(WSclient_t * client);    // send ping in specified intervals
 
     /**
-         * called if a non Websocket connection is coming in.
-         * Note: can be override
-         * @param client WSclient_t *  ptr to the client struct
-         */
+     * called if a non Websocket connection is coming in.
+     * Note: can be override
+     * @param client WSclient_t *  ptr to the client struct
+     */
     virtual void handleNonWebsocketConnection(WSclient_t * client) {
         DEBUG_WEBSOCKETS("[WS-Server][%d][handleHeader] no Websocket connection close.\n", client->num);
         client->tcp->write(
@@ -156,10 +151,10 @@ class WebSocketsServer : protected WebSockets {
     }
 
     /**
-         * called if a non Authorization connection is coming in.
-         * Note: can be override
-         * @param client WSclient_t *  ptr to the client struct
-         */
+     * called if a non Authorization connection is coming in.
+     * Note: can be override
+     * @param client WSclient_t *  ptr to the client struct
+     */
     virtual void handleAuthorizationFailed(WSclient_t * client) {
         client->tcp->write(
             "HTTP/1.1 401 Unauthorized\r\n"
@@ -175,12 +170,12 @@ class WebSocketsServer : protected WebSockets {
     }
 
     /**
-         * called for sending a Event to the app
-         * @param num uint8_t
-         * @param type WStype_t
-         * @param payload uint8_t *
-         * @param length size_t
-         */
+     * called for sending a Event to the app
+     * @param num uint8_t
+     * @param type WStype_t
+     * @param payload uint8_t *
+     * @param length size_t
+     */
     virtual void runCbEvent(uint8_t num, WStype_t type, uint8_t * payload, size_t length) {
         if(_cbEvent) {
             _cbEvent(num, type, payload, length);
@@ -188,28 +183,61 @@ class WebSocketsServer : protected WebSockets {
     }
 
     /*
-         * Called at client socket connect handshake negotiation time for each http header that is not
-         * a websocket specific http header (not Connection, Upgrade, Sec-WebSocket-*)
-         * If the custom httpHeaderValidationFunc returns false for any headerName / headerValue passed, the
-         * socket negotiation is considered invalid and the upgrade to websockets request is denied / rejected
-         * This mechanism can be used to enable custom authentication schemes e.g. test the value
-         * of a session cookie to determine if a user is logged on / authenticated
-         */
+     * Called at client socket connect handshake negotiation time for each http header that is not
+     * a websocket specific http header (not Connection, Upgrade, Sec-WebSocket-*)
+     * If the custom httpHeaderValidationFunc returns false for any headerName / headerValue passed, the
+     * socket negotiation is considered invalid and the upgrade to websockets request is denied / rejected
+     * This mechanism can be used to enable custom authentication schemes e.g. test the value
+     * of a session cookie to determine if a user is logged on / authenticated
+     */
     virtual bool execHttpHeaderValidation(String headerName, String headerValue) {
         if(_httpHeaderValidationFunc) {
-            //return the value of the custom http header validation function
+            // return the value of the custom http header validation function
             return _httpHeaderValidationFunc(headerName, headerValue);
         }
-        //no custom http header validation so just assume all is good
+        // no custom http header validation so just assume all is good
         return true;
     }
 
+#if(WEBSOCKETS_NETWORK_TYPE != NETWORK_ESP8266_ASYNC)
+    WSclient_t * handleNewClient(WEBSOCKETS_NETWORK_CLASS * tcpClient);
+#endif
+
+    /**
+     * drop native tcp connection (client->tcp)
+     */
+    void dropNativeClient(WSclient_t * client);
+
   private:
     /*
-         * returns an indicator whether the given named header exists in the configured _mandatoryHttpHeaders collection
-         * @param headerName String ///< the name of the header being checked
-         */
+     * returns an indicator whether the given named header exists in the configured _mandatoryHttpHeaders collection
+     * @param headerName String ///< the name of the header being checked
+     */
     bool hasMandatoryHeader(String headerName);
 };
 
+class WebSocketsServer : public WebSocketsServerCore {
+  public:
+    WebSocketsServer(uint16_t port, const String & origin = "", const String & protocol = "arduino");
+    virtual ~WebSocketsServer(void);
+
+    void begin(void);
+    void close(void);
+
+#if(WEBSOCKETS_NETWORK_TYPE != NETWORK_ESP8266_ASYNC)
+    void loop(void);    // handle incoming client and client data
+#else
+    // Async interface not need a loop call
+    void loop(void) __attribute__((deprecated)) {}
+#endif
+
+  protected:
+#if(WEBSOCKETS_NETWORK_TYPE != NETWORK_ESP8266_ASYNC)
+    void handleNewClients(void);
+#endif
+
+    uint16_t _port;
+    WEBSOCKETS_NETWORK_SERVER_CLASS * _server;
+};
+
 #endif /* WEBSOCKETSSERVER_H_ */

src/WebSocketsVersion.h

@@ -0,0 +1,36 @@
+/**
+ * @file WebSocketsVersion.h
+ * @date 25.08.2024
+ * @author Markus Sattler
+ *
+ * Copyright (c) 2015 Markus Sattler. All rights reserved.
+ * This file is part of the WebSockets for Arduino.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+#ifndef WEBSOCKETSVERSION_H_
+#define WEBSOCKETSVERSION_H_
+
+#define WEBSOCKETS_VERSION "2.6.0"
+
+#define WEBSOCKETS_VERSION_MAJOR 2
+#define WEBSOCKETS_VERSION_MINOR 6
+#define WEBSOCKETS_VERSION_PATCH 0
+
+#define WEBSOCKETS_VERSION_INT 2006000
+
+#endif /* WEBSOCKETSVERSION_H_ */

src/libb64/cdecode.c

@@ -9,7 +9,7 @@ For details, see http://sourceforge.net/projects/libb64
 #include <core_esp8266_features.h>
 #endif
 
-#if defined(ESP32)
+#if defined(ESP32) || defined(ARDUINO_ARCH_RP2040) || defined(WIO_TERMINAL) || defined(SEEED_XIAO_M0)
 #define CORE_HAS_LIBB64
 #endif
 

src/libb64/cencode.c

@@ -9,7 +9,7 @@ For details, see http://sourceforge.net/projects/libb64
 #include <core_esp8266_features.h>
 #endif
 
-#if defined(ESP32)
+#if defined(ESP32) || defined(ARDUINO_ARCH_RP2040) || defined(WIO_TERMINAL) || defined(SEEED_XIAO_M0)
 #define CORE_HAS_LIBB64
 #endif
 

travis/common.sh

@@ -1,4 +1,5 @@
 #!/bin/bash
+set -e
 
 function build_sketches()
 {
@@ -27,27 +28,132 @@ function build_sketches()
     done
 }
 
+function build_sketch_cli()
+{
+    local sketch=$1
+    local board=$2
+    arduino-cli --log --log-level info compile -b "$board" "$sketch"
+    result=$?
+    if [ $result -ne 0 ]; then
+        echo "Build failed ($sketch) build verbose..."
+        arduino-cli --log --log-level debug compile -b "$board" "$sketch"
+        result=$?
+    fi
+    if [ $result -ne 0 ]; then
+        echo "Build failed ($1) $sketch"
+        return $result
+    fi
+}
+
+function build_sketch()
+{
+    local arduino=$1
+    local sketch=$2
+    $arduino --verify --verbose $sketch;
+    local result=$?
+    if [ $result -ne 0 ]; then
+        echo "Build failed ($sketch) build verbose..."
+        $arduino --verify --verbose --preserve-temp-files $sketch
+        result=$?
+    fi
+    if [ $result -ne 0 ]; then
+        echo "Build failed ($1) $sketch"
+        return $result
+    fi
+}
+
+function get_sketches_json()
+{
+    local arduino=$1
+    local srcpath=$2
+    local platform=$3
+    local sketches=($(find $srcpath -name *.ino))
+    echo -en "["
+    for sketch in "${sketches[@]}" ; do
+        local sketchdir=$(dirname $sketch)
+        if [[ -f "$sketchdir/.$platform.skip" ]]; then
+            continue
+        fi
+        echo -en "\"$sketch\""
+        if [[ $sketch != ${sketches[-1]} ]] ; then
+            echo -en ","
+        fi
+
+    done
+    echo -en "]"
+}
+
+function get_sketches_json_matrix()
+{
+    local arduino=$1
+    local srcpath=$2
+    local platform=$3
+    local cliversion=$4
+    local board=$5
+    local sketches=($(find $srcpath -name *.ino))
+    for sketch in "${sketches[@]}" ; do
+        local sketchdir=$(dirname $sketch)
+        local sketchname=$(basename $sketch)
+        if [[ -f "$sketchdir/.$platform.skip" ]]; then
+            continue
+        fi
+        echo -en "{\"name\":\"$sketchname\",\"board\":\"$board\",\"cliversion\":\"$cliversion\",\"cpu\":\"$platform\",\"sketch\":\"$sketch\"}"
+        if [[ $sketch != ${sketches[-1]} ]] ; then
+            echo -en ","
+        fi
+    done
+}
+
+function get_core_cli() {
+    export ARDUINO_BOARD_MANAGER_ADDITIONAL_URLS="https://arduino.esp8266.com/stable/package_esp8266com_index.json https://espressif.github.io/arduino-esp32/package_esp32_index.json https://github.com/earlephilhower/arduino-pico/releases/download/3.9.2/package_rp2040_index.json"
+    arduino-cli core update-index
+    arduino-cli core install esp8266:esp8266
+    arduino-cli core install esp32:esp32
+    arduino-cli core install rp2040:rp2040
+}
 
 function get_core()
 {
     echo Setup core for $1
 
-    cd $HOME/arduino_ide/hardware
+    mkdir -p $HOME/arduino_ide/packages/hardware
+    cd $HOME/arduino_ide/packages/hardware
 
     if [ "$1" = "esp8266" ] ; then
         mkdir esp8266com
         cd esp8266com
-        git clone https://github.com/esp8266/Arduino.git esp8266
-        cd esp8266/tools
+        git clone --depth 1 https://github.com/esp8266/Arduino.git esp8266
+        cd esp8266/
+        git submodule update --init
+        rm -rf .git
+        cd tools
         python get.py
     fi
 
     if [ "$1" = "esp32" ] ; then
         mkdir espressif
         cd espressif
-        git clone https://github.com/espressif/arduino-esp32.git esp32
-        cd esp32/tools
+        git clone --depth 1 https://github.com/espressif/arduino-esp32.git esp32
+        cd esp32/
+        rm -rf .git
+        cd tools
         python get.py
     fi
 
 }
+
+function clone_library() {
+    local url=$1
+    echo clone $(basename $url)
+    mkdir -p $HOME/Arduino/libraries
+    cd $HOME/Arduino/libraries
+    git clone --depth 1 $url
+    rm -rf */.git
+    rm -rf */.github
+    rm -rf */examples
+}
+
+function hash_library_names() {
+    cd $HOME/Arduino/libraries
+    ls | sha1sum -z | cut -c1-5
+}

travis/version.py

@@ -0,0 +1,132 @@
+#!/usr/bin/python3
+
+import json
+import configparser
+import argparse
+import re
+import os
+import datetime
+
+travis_dir = os.path.dirname(os.path.abspath(__file__))
+base_dir = os.path.abspath(travis_dir + "/../")
+
+def write_header_file(version):
+    hvs = version.split('.')
+    intversion = int(hvs[0]) * 1000000 + int(hvs[1]) * 1000 + int(hvs[2])
+    now = datetime.datetime.now()
+
+    text = f'''/**
+ * @file WebSocketsVersion.h
+ * @date {now.strftime("%d.%m.%Y")}
+ * @author Markus Sattler
+ *
+ * Copyright (c) 2015 Markus Sattler. All rights reserved.
+ * This file is part of the WebSockets for Arduino.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+#ifndef WEBSOCKETSVERSION_H_
+#define WEBSOCKETSVERSION_H_
+
+#define WEBSOCKETS_VERSION "{version}"
+
+#define WEBSOCKETS_VERSION_MAJOR {hvs[0]}
+#define WEBSOCKETS_VERSION_MINOR {hvs[1]}
+#define WEBSOCKETS_VERSION_PATCH {hvs[2]}
+
+#define WEBSOCKETS_VERSION_INT {intversion}
+
+#endif /* WEBSOCKETSVERSION_H_ */
+'''
+    with open(f'{base_dir}/src/WebSocketsVersion.h', 'w') as f:
+        f.write(text)
+
+
+def get_library_properties_version():
+    library_properties = {}
+    with open(f'{base_dir}/library.properties', 'r') as f:
+        library_properties = configparser.ConfigParser()
+        library_properties.read_string('[root]\n' + f.read())
+    return library_properties['root']['version']
+
+
+def get_library_json_version():
+    library_json = {}
+    with open(f'{base_dir}/library.json', 'r') as f:
+        library_json = json.load(f)
+    return library_json['version']
+
+
+def get_header_versions():
+    data = {}
+    define = re.compile('^#define WEBSOCKETS_VERSION_?(.*) "?([0-9\.]*)"?$')
+    with open(f'{base_dir}/src/WebSocketsVersion.h', 'r') as f:
+        for line in f:
+            m = define.match(line)
+            if m:
+                name = m[1]
+                if name == "":
+                    name = "VERSION"
+                data[name] = m[2]
+    return data
+
+
+parser = argparse.ArgumentParser(description='Checks and update Version files')
+parser.add_argument(
+    '--update', action='store_true', default=False)
+parser.add_argument(
+    '--check', action='store_true', default=True)
+
+args = parser.parse_args()
+
+if args.update:
+    library_properties_version = get_library_properties_version()
+
+    with open(f'{base_dir}/library.json', 'r') as f:
+        library_json = json.load(f)
+
+    library_json['version'] = library_properties_version
+
+    with open(f'{base_dir}/library.json', 'w') as f:
+        json.dump(library_json, f, indent=4, sort_keys=True)
+
+    write_header_file(library_properties_version)
+
+
+library_json_version = get_library_json_version()
+library_properties_version = get_library_properties_version()
+header_version = get_header_versions()
+
+print("WebSocketsVersion.h", header_version)
+print(f"library.json: {library_json_version}")
+print(f"library.properties: {library_properties_version}")
+
+if args.check:
+    if library_json_version != library_properties_version or header_version['VERSION'] != library_properties_version:
+        raise Exception('versions did not match!')
+
+    hvs = header_version['VERSION'].split('.')
+    if header_version['MAJOR'] != hvs[0]:
+        raise Exception('header MAJOR version wrong!')
+    if header_version['MINOR'] != hvs[1]:
+        raise Exception('header MINOR version wrong!')
+    if header_version['PATCH'] != hvs[2]:
+        raise Exception('header PATCH version wrong!')
+
+    intversion = int(hvs[0]) * 1000000 + int(hvs[1]) * 1000 + int(hvs[2])
+    if int(header_version['INT']) != intversion:
+        raise Exception('header INT version wrong!')