enable debug for CI

Created a dummy client in order to be able to drop the TCP Client.

.github/workflows/main.yml

@@ -0,0 +1,186 @@
+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@v2
+
+      - name: check version
+        run: |
+          $GITHUB_WORKSPACE/travis/version.py --check
+
+  prepare_example_json:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: generate examples
+        id: set-matrix
+        run: |
+          source $GITHUB_WORKSPACE/travis/common.sh
+          cd $GITHUB_WORKSPACE
+          echo -en "::set-output name=matrix::"
+          echo -en "["
+
+          get_sketches_json_matrix arduino $GITHUB_WORKSPACE/examples/esp8266 esp8266 1.8.19 esp8266com:esp8266:generic:xtal=80,dbg=Serial1
+          echo -en ","
+
+          get_sketches_json_matrix arduino $GITHUB_WORKSPACE/examples/esp8266 esp8266 1.8.19 esp8266com:esp8266:generic:xtal=80,eesz=1M,FlashMode=qio,FlashFreq=80
+          echo -en ","
+
+          get_sketches_json_matrix arduino $GITHUB_WORKSPACE/examples/esp32 esp32 1.8.19 espressif:esp32:esp32:FlashFreq=80
+
+          echo -en "]"
+    outputs:
+      matrix: ${{ steps.set-matrix.outputs.matrix }}
+
+  prepare_ide:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        IDE_VERSION: [1.8.19]
+    env:
+      IDE_VERSION: ${{ matrix.IDE_VERSION }}
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Get Date
+        id: get-date
+        run: |
+          echo "::set-output name=date::$(/bin/date -u "+%Y%m%d")"
+        shell: bash
+
+      - uses: actions/cache@v2
+        id: cache_all
+        with:
+          path: |
+            /home/runner/arduino_ide
+            /home/runner/Arduino
+          key: ${{ runner.os }}-${{ steps.get-date.outputs.date }}-${{ matrix.IDE_VERSION }}
+
+      - name: download IDE
+        if: steps.cache_all.outputs.cache-hit != 'true'
+        run: |
+          wget http://downloads.arduino.cc/arduino-$IDE_VERSION-linux64.tar.xz -q
+          tar xf arduino-$IDE_VERSION-linux64.tar.xz
+          mv arduino-$IDE_VERSION $HOME/arduino_ide
+
+      - 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 esp8266
+        if: steps.cache_all.outputs.cache-hit != 'true'
+        run: |
+          source $GITHUB_WORKSPACE/travis/common.sh
+          get_core esp8266
+
+      - name: download esp32
+        if: steps.cache_all.outputs.cache-hit != 'true'
+        run: |
+          source $GITHUB_WORKSPACE/travis/common.sh
+          get_core esp32
+
+  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 }}
+      IDE_VERSION: ${{ matrix.ideversion }}
+      SKETCH: ${{ matrix.sketch }}
+
+    # Steps represent a sequence of tasks that will be executed as part of the job
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: install libgtk2.0-0
+        run: |
+          sudo apt-get install -y libgtk2.0-0
+
+      - name: Get Date
+        id: get-date
+        run: |
+          echo "::set-output name=date::$(/bin/date -u "+%Y%m%d")"
+        shell: bash
+
+      - uses: actions/cache@v2
+        id: cache_all
+        with:
+          path: |
+            /home/runner/arduino_ide
+            /home/runner/Arduino
+          key: ${{ runner.os }}-${{ steps.get-date.outputs.date }}-${{ matrix.ideversion }}
+
+      - name: install python serial
+        if: matrix.cpu == 'esp32'
+        run: |
+          sudo pip3 install pyserial
+          sudo pip install pyserial
+#          sudo apt install python-is-python3
+
+      - name: start DISPLAY
+        run: |
+          /sbin/start-stop-daemon --start --quiet --pidfile /tmp/custom_xvfb_1.pid --make-pidfile --background --exec /usr/bin/Xvfb -- :1 -ac -screen 0 1280x1024x16
+          export DISPLAY=:1.0
+          sleep 3
+
+      - name: test IDE
+        run: |
+          export PATH="$HOME/arduino_ide:$PATH"
+          which arduino
+
+      - name: copy code
+        run: |
+          mkdir -p $HOME/Arduino/libraries/
+          cp -r $GITHUB_WORKSPACE $HOME/Arduino/libraries/arduinoWebSockets
+
+      - name: config IDE
+        run: |
+          export DISPLAY=:1.0
+          export PATH="$HOME/arduino_ide:$PATH"
+          arduino --board $BOARD --save-prefs
+          arduino --get-pref sketchbook.path
+          arduino --pref update.check=false
+
+      - name: build example
+        timeout-minutes: 20
+        run: |
+          set -ex
+          export DISPLAY=:1.0
+          export PATH="$HOME/arduino_ide:$PATH"
+          source $GITHUB_WORKSPACE/travis/common.sh
+          cd $GITHUB_WORKSPACE
+          build_sketch arduino $SKETCH
+
+  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.com/Links2004/arduinoWebSockets.svg?branch=master)](https://travis-ci.com/Links2004/arduinoWebSockets)
+WebSocket Server and Client for Arduino [![Build Status](https://github.com/Links2004/arduinoWebSockets/workflows/CI/badge.svg?branch=master)](https://github.com/Links2004/arduinoWebSockets/actions?query=workflow%3ACI+branch%3Amaster)
 ===========================================
 
 a WebSocket Server and Client for Arduino based on RFC6455.

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/esp8266/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/WebSocketClientOTA/WebSocketClientOTA.ino

@@ -0,0 +1,263 @@
+/*
+ * WebSocketClientOTA.ino
+ *
+ *  Created on: 25.10.2021
+ *
+ */
+
+#include <Arduino.h>
+#include <ArduinoJson.h>
+
+#ifdef ESP8266
+    #include <ESP8266WiFi.h>
+    #include <ESP8266mDNS.h>
+	#include <Updater.h>
+#endif
+#ifdef ESP32
+    #include "WiFi.h"
+    #include "ESPmDNS.h"
+	#include <Update.h>
+#endif
+
+#include <WiFiUdp.h>
+#include <ESP8266WiFiMulti.h>
+
+#include <WebSocketsClient.h>
+
+#include <Hash.h>
+
+ESP8266WiFiMulti WiFiMulti;
+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;
+
+String IpAddress2String(const IPAddress& ipAddress)
+{
+    return String(ipAddress[0]) + String(".") +
+           String(ipAddress[1]) + String(".") +
+           String(ipAddress[2]) + String(".") +
+           String(ipAddress[3]);
+}
+
+void greetings_(){
+	StaticJsonDocument<200> doc;
+	doc["type"] = "greetings";
+	doc["mac"] = WiFi.macAddress();
+	doc["ip"] = IpAddress2String(WiFi.localIP());
+	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();
+
+	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(JsonDocument &msg){
+    USE_SERIAL.print(F("[WSc] OTA mode: "));
+    const char* go = "go";
+    const char* ok = "ok";
+    if(strncmp( msg["value"], go, strlen(go)) == 0 ) {
+        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 (strncmp( msg["value"], ok, strlen(ok)) == 0) {
+        USE_SERIAL.print(F("OK\n"));
+        register_();
+    } else {
+        USE_SERIAL.print(F("unknown value : "));
+        USE_SERIAL.print(msg["value"].as<char>());
+        USE_SERIAL.print(F("\n"));
+    }
+}
+
+void STATE(JsonDocument &msg){
+    // Do something with message
+}
+
+RESPONSES_STRUCT responses[] = {
+  {"ota",           OTA},
+  {"state",      STATE},
+};
+
+void text(uint8_t * payload, size_t length){
+    // Convert mesage 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;
+
+    for( b=0 ; strlen(responses[b].type) ; b++ )
+    {
+        if( strncmp(doc_in["type"], responses[b].type, strlen(responses[b].type)) == 0 ) {
+            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/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(2048)
+            if not chunk:
+                break
+            try:
+                await websocket.send(chunk)
+            except Exception as exception:
+                Logger.exception(exception)
+                return False
+            time.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
+
+    Runing 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 = {'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 = {'response_type': 'state', 'state': 'ok'}
+    await websocket.send(json.dumps(response))
+
+
+async def _unhandleld(websocket, msg):
+    Logger.info("Unhandled message from device: %s", str(msg))
+    response = {'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_, _unhandleld)
+        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 nubers 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/WebSocketClientOTA/python_ota_server/requirements.txt

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

examples/esp8266/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/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/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/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/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/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()

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": "2.3.0",
-    "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": "atmelavr, espressif8266, espressif32",
+    "repository": {
+        "type": "git",
+        "url": "https://github.com/Links2004/arduinoWebSockets.git"
+    },
+    "version": "2.3.6"
+}

library.properties

@@ -1,5 +1,5 @@
 name=WebSockets
-version=2.3.0
+version=2.3.6
 author=Markus Sattler
 maintainer=Markus Sattler
 sentence=WebSockets for Arduino (Server + Client)

src/SocketIOclient.cpp

@@ -18,11 +18,59 @@ SocketIOclient::~SocketIOclient() {
 void SocketIOclient::begin(const char * host, uint16_t port, const char * url, const char * protocol) {
     WebSocketsClient::beginSocketIO(host, port, url, protocol);
     WebSocketsClient::enableHeartbeat(60 * 1000, 90 * 1000, 5);
+    initClient();
 }
 
 void SocketIOclient::begin(String host, uint16_t port, String url, String protocol) {
     WebSocketsClient::beginSocketIO(host, port, url, protocol);
     WebSocketsClient::enableHeartbeat(60 * 1000, 90 * 1000, 5);
+    initClient();
+}
+#if defined(HAS_SSL)
+void SocketIOclient::beginSSL(const char * host, uint16_t port, const char * url, const char * protocol) {
+    WebSocketsClient::beginSocketIOSSL(host, port, url, protocol);
+    WebSocketsClient::enableHeartbeat(60 * 1000, 90 * 1000, 5);
+    initClient();
+}
+
+void SocketIOclient::beginSSL(String host, uint16_t port, String url, String protocol) {
+    WebSocketsClient::beginSocketIOSSL(host, port, url, protocol);
+    WebSocketsClient::enableHeartbeat(60 * 1000, 90 * 1000, 5);
+    initClient();
+}
+#if defined(SSL_BARESSL)
+void SocketIOclient::beginSSLWithCA(const char * host, uint16_t port, const char * url, const char * CA_cert, const char * protocol) {
+    WebSocketsClient::beginSocketIOSSLWithCA(host, port, url, CA_cert, protocol);
+    WebSocketsClient::enableHeartbeat(60 * 1000, 90 * 1000, 5);
+    initClient();
+}
+
+void SocketIOclient::beginSSLWithCA(const char * host, uint16_t port, const char * url, BearSSL::X509List * CA_cert, const char * protocol) {
+    WebSocketsClient::beginSocketIOSSLWithCA(host, port, url, CA_cert, protocol);
+    WebSocketsClient::enableHeartbeat(60 * 1000, 90 * 1000, 5);
+    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 +85,14 @@ 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);
+}
+
 /**
  * send text data to client
  * @param num uint8_t client id
@@ -51,7 +107,7 @@ 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 +174,8 @@ 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 +191,7 @@ 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 +222,8 @@ 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:

src/SocketIOclient.h

@@ -9,6 +9,7 @@
 #define SOCKETIOCLIENT_H_
 
 #include "WebSockets.h"
+#include "WebSocketsClient.h"
 
 #define EIO_HEARTBEAT_INTERVAL 20000
 
@@ -49,6 +50,16 @@ class SocketIOclient : protected WebSocketsClient {
     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");
 
+#ifdef HAS_SSL
+    void beginSSL(const char * host, uint16_t port, const char * url = "/socket.io/?EIO=3", const char * protocol = "arduino");
+    void beginSSL(String host, uint16_t port, String url = "/socket.io/?EIO=3", String protocol = "arduino");
+#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");
+    void beginSSLWithCA(const char * host, uint16_t port, const char * url = "/socket.io/?EIO=3", BearSSL::X509List * CA_cert = NULL, const char * protocol = "arduino");
+    void setSSLClientCertKey(const char * clientCert = NULL, const char * clientPrivateKey = NULL);
+    void setSSLClientCertKey(BearSSL::X509List * clientCert = NULL, BearSSL::PrivateKey * clientPrivateKey = NULL);
+#endif
+#endif
     bool isConnected(void);
 
     void onEvent(SocketIOclientEvent cbEvent);
@@ -65,9 +76,15 @@ 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 +93,8 @@ 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]);
                 }
@@ -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
 
@@ -630,7 +635,7 @@ 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 +644,13 @@ 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 +698,13 @@ 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;

src/WebSockets.h

@@ -40,9 +40,15 @@
 #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__ )
 #endif
@@ -65,8 +71,10 @@
 
 #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)
@@ -75,15 +83,15 @@
 #define WEBSOCKETS_USE_BIG_MEM
 #define GET_FREE_HEAP System.freeMemory()
 #define WEBSOCKETS_YIELD()
-
+#define WEBSOCKETS_YIELD_MORE()
 #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
 
 #define WEBSOCKETS_TCP_TIMEOUT (5000)
@@ -209,6 +217,7 @@
 typedef enum {
     WSC_NOT_CONNECTED,
     WSC_HEADER,
+    WSC_BODY,
     WSC_CONNECTED
 } WSclientsStatus_t;
 
@@ -252,34 +261,44 @@ 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;
 
@@ -288,15 +307,15 @@ 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 +1,80 @@
+/**
+ * @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 && WEBSERVER_HAS_HOOK
+
+class WebSockets4WebServer : public WebSocketsServerCore {
+  public:
+    WebSockets4WebServer(const String & origin = "", const String & protocol = "arduino")
+        : WebSocketsServerCore(origin, protocol) {
+        begin();
+    }
+
+    ESP8266WebServer::HookFunction hookForWebserver(const String & wsRootDir, WebSocketServerEvent event) {
+        onEvent(event);
+
+        return [&, wsRootDir](const String & method, const String & url, WiFiClient * tcpClient, ESP8266WebServer::ContentTypeFunction contentType) {
+            (void)contentType;
+
+            if(!(method == "GET" && url.indexOf(wsRootDir) == 0)) {
+                return ESP8266WebServer::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 ESP8266WebServer::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

@@ -86,6 +86,8 @@ void WebSocketsClient::begin(const char * host, uint16_t port, const char * url,
 
     _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) {
@@ -122,12 +124,6 @@ void WebSocketsClient::beginSSL(const char * host, uint16_t port, const char * u
     _fingerprint  = fingerprint;
     _CA_cert      = NULL;
 }
-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  = SSL_FINGERPRINT_NULL;
-    _CA_cert      = new BearSSL::X509List(CA_cert);
-}
 
 void WebSocketsClient::beginSslWithCA(const char * host, uint16_t port, const char * url, BearSSL::X509List * CA_cert, const char * protocol) {
     begin(host, port, url, protocol);
@@ -135,6 +131,20 @@ void WebSocketsClient::beginSslWithCA(const char * host, uint16_t port, const ch
     _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(BearSSL::X509List * clientCert, BearSSL::PrivateKey * clientPrivateKey) {
+    _client_cert = clientCert;
+    _client_key  = clientPrivateKey;
+}
+
+void WebSocketsClient::setSSLClientCertKey(const char * clientCert, const char * clientPrivateKey) {
+    setSSLClientCertKey(new BearSSL::X509List(clientCert), new BearSSL::PrivateKey(clientPrivateKey));
+}
+
 #endif    // SSL_AXTLS
 #endif    // HAS_SSL
 
@@ -159,17 +169,28 @@ void WebSocketsClient::beginSocketIOSSL(String host, uint16_t port, String url,
     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       = SSL_FINGERPRINT_NULL;
-#if defined(SSL_AXTLS)
-    _CA_cert = CA_cert;
-#else
+#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)
@@ -208,11 +229,18 @@ void WebSocketsClient::loop(void) {
 #else
 #error setCACert not implemented
 #endif
-#if defined(SSL_BARESSL)
-            } else if(_fingerprint) {
+#if defined(ESP32)
+            } 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 {
@@ -482,7 +510,8 @@ 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) {
@@ -525,12 +554,13 @@ bool WebSocketsClient::clientIsConnected(WSclient_t * client) {
  * Handel incomming data from Client
  */
 void WebSocketsClient::handleClientData(void) {
-    if(_client.status == WSC_HEADER && _lastHeaderSent + WEBSOCKETS_TCP_TIMEOUT < millis()) {
+    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) {
@@ -538,6 +568,12 @@ 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;
@@ -613,7 +649,7 @@ 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;
     }
 
@@ -649,6 +685,22 @@ 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());
 
@@ -682,7 +734,7 @@ void WebSocketsClient::handleHeader(WSclient_t * client, String * headerLine) {
             } 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) {
+                if(headerValue.indexOf(';') > -1) {
                     client->cSessionId = headerValue.substring(headerValue.indexOf('=') + 1, headerValue.indexOf(";"));
                 } else {
                     client->cSessionId = headerValue.substring(headerValue.indexOf('=') + 1);
@@ -713,6 +765,14 @@ 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) {
@@ -724,9 +784,11 @@ 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);
@@ -754,15 +816,18 @@ 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");
@@ -805,14 +870,14 @@ void WebSocketsClient::connectedCb() {
 
 #if defined(HAS_SSL)
 #if defined(SSL_AXTLS) || defined(ESP32)
-    if(_client.isSSL && _fingerprint.length()) {
+    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 && _fingerprint) {
+    if(_client.isSSL && SSL_FINGERPRINT_IS_SET) {
 #endif
     } else if(_client.isSSL && !_CA_cert) {
 #if defined(SSL_BARESSL)
@@ -885,6 +950,9 @@ 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

@@ -49,6 +49,8 @@ class WebSocketsClient : protected WebSockets {
 #else
     void beginSSL(const char * host, uint16_t port, const char * url = "/", const uint8_t * fingerprint = NULL, const char * protocol = "arduino");
     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);
+    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");
 #endif
@@ -59,7 +61,11 @@ 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)
@@ -106,10 +112,14 @@ class WebSocketsClient : protected WebSockets {
 #ifdef SSL_AXTLS
     String _fingerprint;
     const char * _CA_cert;
+#define SSL_FINGERPRINT_IS_SET (_fingerprint.length())
 #define SSL_FINGERPRINT_NULL ""
 #else
     const uint8_t * _fingerprint;
     BearSSL::X509List * _CA_cert;
+    BearSSL::X509List * _client_cert;
+    BearSSL::PrivateKey * _client_key;
+#define SSL_FINGERPRINT_IS_SET (_fingerprint != NULL)
 #define SSL_FINGERPRINT_NULL NULL
 #endif
 
@@ -144,11 +154,11 @@ 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 +64,20 @@ WebSocketsServer::~WebSocketsServer() {
     _mandatoryHttpHeaderCount = 0;
 }
 
+WebSocketsServer::~WebSocketsServer() {
+}
+
 /**
  * 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
@@ -111,43 +91,26 @@ void WebSocketsServer::begin(void) {
 #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 +120,7 @@ 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 +145,7 @@ 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 +159,19 @@ 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 +182,7 @@ 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 +201,19 @@ 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 +225,7 @@ 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 +236,7 @@ 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 +247,7 @@ 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 +262,7 @@ 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 +273,7 @@ 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 +284,7 @@ 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 +294,7 @@ 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 +309,14 @@ 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 +330,7 @@ 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 +345,7 @@ 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 +358,7 @@ 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 +368,7 @@ 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++) {
@@ -423,7 +386,7 @@ int WebSocketsServer::connectedClients(bool ping) {
  * see if one client is connected
  * @param num uint8_t client id
  */
-bool WebSocketsServer::clientIsConnected(uint8_t num) {
+bool WebSocketsServerCore::clientIsConnected(uint8_t num) {
     if(num >= WEBSOCKETS_SERVER_CLIENT_MAX) {
         return false;
     }
@@ -437,7 +400,7 @@ bool WebSocketsServer::clientIsConnected(uint8_t num) {
  * @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)) {
@@ -457,7 +420,7 @@ IPAddress WebSocketsServer::remoteIP(uint8_t num) {
  * 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++) {
@@ -486,7 +449,7 @@ 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;
@@ -498,7 +461,7 @@ 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;
@@ -507,11 +470,11 @@ bool WebSocketsServer::newClient(WEBSOCKETS_NETWORK_CLASS * TCPclient) {
             client->lastPing               = millis();
             client->pongReceived           = false;
 
-            return true;
+            return client;
             break;
         }
     }
-    return false;
+    return nullptr;
 }
 
 /**
@@ -521,7 +484,7 @@ 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) {
@@ -548,11 +511,35 @@ 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)
+            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;
+    }
+}
+
 /**
  * Disconnect an client
  * @param client WSclient_t *  ptr to the client struct
  */
-void WebSocketsServer::clientDisconnect(WSclient_t * client) {
+void WebSocketsServerCore::clientDisconnect(WSclient_t * client) {
 #if(WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266) || (WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP32)
     if(client->isSSL && client->ssl) {
         if(client->ssl->connected()) {
@@ -565,20 +552,7 @@ 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         = "";
@@ -605,7 +579,7 @@ 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;
     }
@@ -632,6 +606,34 @@ 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)
+#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);
+    }
+
+    WEBSOCKETS_YIELD();
+
+    return client;
+}
+
 /**
  * Handle incoming Connection Request
  */
@@ -639,36 +641,16 @@ void WebSocketsServer::handleNewClients(void) {
 #if(WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266) || (WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP32)
     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(!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)
     }
 #endif
@@ -677,14 +659,14 @@ 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');
@@ -694,6 +676,7 @@ 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;
                 }
@@ -711,7 +694,7 @@ 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;
@@ -724,7 +707,7 @@ 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
@@ -737,7 +720,7 @@ 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;
 
@@ -783,7 +766,7 @@ 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);
@@ -880,7 +863,7 @@ 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;
@@ -899,7 +882,7 @@ 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;
@@ -914,7 +897,7 @@ 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;
@@ -922,4 +905,51 @@ 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)
+    _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,
@@ -93,7 +86,7 @@ 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();
 
@@ -101,16 +94,19 @@ class WebSocketsServer : protected WebSockets {
     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;
@@ -122,15 +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
 
@@ -139,10 +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(
@@ -158,10 +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"
@@ -177,12 +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);
@@ -190,28 +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 08.03.2021
+ * @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 "2.3.6"
+
+#define WEBSOCKETS_VERSION_MAJOR 2
+#define WEBSOCKETS_VERSION_MINOR 3
+#define WEBSOCKETS_VERSION_PATCH 6
+
+#define WEBSOCKETS_VERSION_INT 2003006
+
+#endif /* WEBSOCKETSVERSION_H_ */

travis/common.sh

@@ -1,5 +1,7 @@
 #!/bin/bash
 
+set -ex
+
 function build_sketches()
 {
     local arduino=$1
@@ -27,6 +29,64 @@ function build_sketches()
     done
 }
 
+function build_sketch()
+{
+    local arduino=$1
+    local sketch=$2
+    $arduino --verify $sketch;
+    local result=$?
+    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 ideversion=$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\":\"$board\",\"ideversion\":\"$ideversion\",\"cpu\":\"$platform\",\"sketch\":\"$sketch\"}"
+        if [[ $sketch != ${sketches[-1]} ]] ; then
+            echo -en ","
+        fi
+    done
+}
 
 function get_core()
 {
@@ -37,17 +97,38 @@ function get_core()
     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!')