add WebSocketClientAVR example

this need some more testing but basics are done

README.md

@@ -3,6 +3,7 @@ WebSocket Server and Client for Arduino
 
 a WebSocket Server and Client for Arduino based on RFC6455.
 
+ 
 ##### Supported features of RFC6455 #####
  - text frame
  - binary frame
@@ -16,18 +17,24 @@ a WebSocket Server and Client for Arduino based on RFC6455.
 ##### Limitations #####
  - max input length is limited to the ram size and the ```WEBSOCKETS_MAX_DATA_SIZE``` define
  - max output length has no limit (the hardware is the limit)
- - Client send masked frames always with mask 0x00000000 (open todo)
+ - Client send masked frames always with mask 0x00000000
 
 ##### Supported Hardware #####
  - ESP8266 [Arduino for ESP8266](https://github.com/Links2004/Arduino)
- - ATmega328 with Ethernet Shield (planed)
- - ATmega328 with enc28j60 (planed)
- - ATmega2560 with Ethernet Shield (planed)
- - ATmega2560 with enc28j60 (planed)
+ - ATmega328 with Ethernet Shield (alpha)
+ - ATmega328 with enc28j60 (alpha)
+ - ATmega2560 with Ethernet Shield (alpha)
+ - ATmega2560 with enc28j60 (alpha)
+ 
+### wss / SSL ###
+ supported for:
+ - wss client on the ESP8266
  
 ### Issues ###
 Submit issues to: https://github.com/Links2004/arduinoWebSockets/issues
 
+[![Join the chat at https://gitter.im/Links2004/arduinoWebSockets](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/Links2004/arduinoWebSockets?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
+
 ### License and credits ###
 
 The library is licensed under [LGPLv2.1](https://github.com/Links2004/arduinoWebSockets/blob/master/LICENSE)

examples/WebSocketClient/WebSocketClient.ino

@@ -32,7 +32,7 @@ void webSocketEvent(WStype_t type, uint8_t * payload, size_t lenght) {
                 USE_SERIAL.printf("[WSc] Connected to url: %s\n",  payload);
 				
 			    // send message to server when Connected
-				webSocket.sendTXT(num, "Connected");
+				webSocket.sendTXT("Connected");
             }
             break;
         case WStype_TEXT:

examples/WebSocketClientAVR/WebSocketClientAVR.ino

@@ -0,0 +1,84 @@
+/*
+ * WebSocketClientAVR.ino
+ *
+ *  Created on: 10.12.2015
+ *
+ */
+
+#include <Arduino.h>
+
+#include <SPI.h>
+#include <Ethernet.h>
+
+#include <WebSocketsClient.h>
+
+
+
+// Enter a MAC address for your controller below.
+// Newer Ethernet shields have a MAC address printed on a sticker on the shield
+byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
+
+// Set the static IP address to use if the DHCP fails to assign
+IPAddress ip(192, 168, 0, 177);
+
+WebSocketsClient webSocket;
+
+
+
+void webSocketEvent(WStype_t type, uint8_t * payload, size_t length) {
+
+
+    switch(type) {
+        case WStype_DISCONNECTED:
+            Serial.println("[WSc] Disconnected!\n");
+            break;
+        case WStype_CONNECTED:
+            {
+                Serial.print("[WSc] Connected to url: ");
+                Serial.println((char *)payload);
+                // send message to server when Connected
+                webSocket.sendTXT("Connected");
+            }
+            break;
+        case WStype_TEXT:
+            Serial.print("[WSc] get text: ");
+            Serial.println((char *)payload);
+            // send message to server
+            // webSocket.sendTXT("message here");
+            break;
+        case WStype_BIN:
+            Serial.print("[WSc] get binary length: ");
+            Serial.println(length);
+           // hexdump(payload, length);
+
+            // send data to server
+            // webSocket.sendBIN(payload, length);
+            break;
+    }
+
+}
+
+void setup()
+{
+    // Open serial communications and wait for port to open:
+    Serial.begin(115200);
+    while (!Serial) {}
+
+    // start the Ethernet connection:
+    if (Ethernet.begin(mac) == 0) {
+      Serial.println("Failed to configure Ethernet using DHCP");
+      // no point in carrying on, so do nothing forevermore:
+      // try to congifure using IP address instead of DHCP:
+      Ethernet.begin(mac, ip);
+    }
+
+    webSocket.begin("192.168.0.123", 8011);
+    webSocket.onEvent(webSocketEvent);
+
+}
+
+
+void loop()
+{
+    webSocket.loop();
+}

examples/WebSocketClientSSL/WebSocketClientSSL.ino

@@ -0,0 +1,88 @@
+/*
+ * WebSocketClientSSL.ino
+ *
+ *  Created on: 10.12.2015
+ *
+ *  note SSL is only possible with the ESP8266
+ *
+ */
+
+#include <Arduino.h>
+
+#include <ESP8266WiFi.h>
+#include <ESP8266WiFiMulti.h>
+
+#include <WebSocketsClient.h>
+
+#include <Hash.h>
+
+ESP8266WiFiMulti WiFiMulti;
+WebSocketsClient webSocket;
+
+
+#define USE_SERIAL Serial1
+
+void webSocketEvent(WStype_t type, uint8_t * payload, size_t lenght) {
+
+
+    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 lenght: %u\n", lenght);
+            hexdump(payload, lenght);
+
+            // send data to server
+            // webSocket.sendBIN(payload, lenght);
+            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);
+    }
+
+    webSocket.beginSSL("192.168.0.123", 81);
+    webSocket.onEvent(webSocketEvent);
+
+}
+
+void loop() {
+    webSocket.loop();
+}

examples/WebSocketServer_LEDcontrol/WebSocketServer_LEDcontrol.ino

@@ -60,10 +60,10 @@ void webSocketEvent(uint8_t num, WStype_t type, uint8_t * payload, size_t lenght
 }
 
 void setup() {
-    USE_SERIAL.begin(921600);
-    //USE_SERIAL.begin(115200);
+    //USE_SERIAL.begin(921600);
+    USE_SERIAL.begin(115200);
 
-    USE_SERIAL.setDebugOutput(true);
+    //USE_SERIAL.setDebugOutput(true);
 
     USE_SERIAL.println();
     USE_SERIAL.println();
@@ -94,7 +94,7 @@ void setup() {
     webSocket.onEvent(webSocketEvent);
 
     if(MDNS.begin("esp8266")) {
-        Serial.println("MDNS responder started");
+        USE_SERIAL.println("MDNS responder started");
     }
 
     // handle index

library.properties

@@ -1,5 +1,5 @@
 name=WebSockets
-version=1.2
+version=1.3
 author=Markus Sattler
 maintainer=Markus Sattler 
 sentence=WebSockets for Arduino (Server + Client)

src/WebSockets.cpp

@@ -24,12 +24,26 @@
 
 #include "WebSockets.h"
 
+#ifdef ESP8266
+#include <core_esp8266_features.h>
+#endif
+
 extern "C" {
-#include "libb64/cencode.h"
+#ifdef CORE_HAS_LIBB64
+    #include <libb64/cencode.h>
+#else
+    #include "libb64/cencode_inc.h"
+#endif
 }
 
 #ifdef ESP8266
 #include <Hash.h>
+#else
+
+extern "C" {
+#include "libsha1/libsha1.h"
+}
+
 #endif
 
 /**
@@ -66,7 +80,7 @@ void WebSockets::clientDisconnect(WSclient_t * client, uint16_t code, char * rea
  */
 void WebSockets::sendFrame(WSclient_t * client, WSopcode_t opcode, uint8_t * payload, size_t length, bool mask, bool fin, bool headerToPayload) {
 
-    if(!client->tcp.connected()) {
+    if(client->tcp && !client->tcp->connected()) {
         DEBUG_WEBSOCKETS("[WS][%d][sendFrame] not Connected!?\n", client->num);
         return;
     }
@@ -163,14 +177,14 @@ void WebSockets::sendFrame(WSclient_t * client, WSopcode_t opcode, uint8_t * pay
         // header has be added to payload
         // payload is forced to reserved 14 Byte but we may not need all based on the length and mask settings
         // offset in payload is calculatetd 14 - headerSize
-        client->tcp.write(&payload[(14 - headerSize)], (length + headerSize));
+        client->tcp->write(&payload[(14 - headerSize)], (length + headerSize));
     } else {
         // send header
-        client->tcp.write(&buffer[0], headerSize);
+        client->tcp->write(&buffer[0], headerSize);
 
         if(payload && length > 0) {
             // send payload
-            client->tcp.write(&payload[0], length);
+            client->tcp->write(&payload[0], length);
         }
     }
 }
@@ -246,7 +260,11 @@ void WebSockets::handleWebsocket(WSclient_t * client) {
     }
 
     if(mask) {
-        client->tcp.read(maskKey, 4);
+        if(!readWait(client, maskKey, 4)) {
+            //timeout
+            clientDisconnect(client, 1002);
+            return;
+        }
     }
 
     if(payloadLen > 0) {
@@ -331,8 +349,13 @@ String WebSockets::acceptKey(String clientKey) {
 #ifdef ESP8266
     sha1(clientKey + "258EAFA5-E914-47DA-95CA-C5AB0DC85B11", &sha1HashBin[0]);
 #else
-#error todo implement sha1 for AVR
+    clientKey =+ "258EAFA5-E914-47DA-95CA-C5AB0DC85B11";
+    SHA1_CTX ctx;
+    SHA1Init(&ctx);
+    SHA1Update(&ctx, (const unsigned char*)clientKey.c_str(), clientKey.length());
+    SHA1Final(&sha1HashBin[0], &ctx);
 #endif
+
     String key = base64_encode(sha1HashBin, 20);
     key.trim();
 
@@ -373,7 +396,7 @@ bool WebSockets::readWait(WSclient_t * client, uint8_t *out, size_t n) {
     size_t len;
 
     while(n > 0) {
-        if(!client->tcp.connected()) {
+        if(client->tcp && !client->tcp->connected()) {
             DEBUG_WEBSOCKETS("[readWait] not connected!\n");
             return false;
         }
@@ -383,14 +406,14 @@ bool WebSockets::readWait(WSclient_t * client, uint8_t *out, size_t n) {
             return false;
         }
 
-        if(!client->tcp.available()) {
+        if(!client->tcp->available()) {
 #ifdef ESP8266
             delay(0);
 #endif
             continue;
         }
 
-        len = client->tcp.read((uint8_t*) out, n);
+        len = client->tcp->read((uint8_t*) out, n);
         if(len) {
             t = millis();
             out += len;

src/WebSockets.h

@@ -27,24 +27,61 @@
 
 #include <Arduino.h>
 
-#ifdef ESP8266
-#include <ESP8266WiFi.h>
-#else
-#include <UIPEthernet.h>
-#ifndef UIPETHERNET_H
-#include <Ethernet.h>
-#include <SPI.h>
-#endif
-#endif
-
 //#define DEBUG_WEBSOCKETS(...) Serial1.printf( __VA_ARGS__ )
 
 #ifndef DEBUG_WEBSOCKETS
 #define DEBUG_WEBSOCKETS(...)
 #endif
 
+#ifdef ESP8266
 #define WEBSOCKETS_MAX_DATA_SIZE  (15*1024)
-#define WEBSOCKETS_TCP_TIMEOUT    (1000)
+#else
+//atmega328p has only 2KB ram!
+#define WEBSOCKETS_MAX_DATA_SIZE  (1024)
+#endif
+
+#define WEBSOCKETS_TCP_TIMEOUT    (1500)
+
+#define NETWORK_ESP8266     (1)
+#define NETWORK_W5100       (2)
+#define NETWORK_ENC28J60    (3)
+
+
+// select Network type based
+#ifdef ESP8266
+#define WEBSOCKETS_NETWORK_TYPE NETWORK_ESP8266
+#else
+#define WEBSOCKETS_NETWORK_TYPE NETWORK_W5100
+#endif
+
+
+#if (WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266)
+
+#ifndef ESP8266
+#error "network type ESP8266 only possible on the ESP mcu!"
+#endif
+
+#include <ESP8266WiFi.h>
+#define WEBSOCKETS_NETWORK_CLASS WiFiClient
+#define WEBSOCKETS_NETWORK_SERVER_CLASS WiFiServer
+
+#elif (WEBSOCKETS_NETWORK_TYPE == NETWORK_W5100)
+
+#include <Ethernet.h>
+#include <SPI.h>
+#define WEBSOCKETS_NETWORK_CLASS EthernetClient
+#define WEBSOCKETS_NETWORK_SERVER_CLASS EthernetServer
+
+#elif (WEBSOCKETS_NETWORK_TYPE == NETWORK_ENC28J60)
+
+#include <UIPEthernet.h>
+#define WEBSOCKETS_NETWORK_CLASS UIPClient
+#define WEBSOCKETS_NETWORK_SERVER_CLASS UIPServer
+
+#else
+#error "no network type selected!"
+#endif
+
 
 typedef enum {
     WSC_NOT_CONNECTED,
@@ -75,15 +112,14 @@ typedef struct {
         uint8_t num; ///< connection number
 
         WSclientsStatus_t status;
-#ifdef ESP8266
-        WiFiClient tcp;
-#else
-#ifdef UIPETHERNET_H
-        UIPClient tcp;
-#else
-        EthernetClient tcp;
-#endif
+
+        WEBSOCKETS_NETWORK_CLASS * tcp;
+
+#if (WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266)
+        bool isSSL;             ///< run in ssl mode
+        WiFiClientSecure * ssl;
 #endif
+
         String cUrl;        ///< http url
         uint16_t cCode;     ///< http code
 

src/WebSocketsClient.cpp

@@ -28,7 +28,6 @@
 WebSocketsClient::WebSocketsClient() {
     _cbEvent = NULL;
     _client.num = 0;
-
 }
 
 WebSocketsClient::~WebSocketsClient() {
@@ -42,7 +41,13 @@ void WebSocketsClient::begin(const char *host, uint16_t port, const char * url)
     _host = host;
     _port = port;
 
+    _client.num = 0;
     _client.status = WSC_NOT_CONNECTED;
+    _client.tcp = NULL;
+#if (WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266)
+    _client.isSSL = false;
+    _client.ssl = NULL;
+#endif
     _client.cUrl = url;
     _client.cCode = 0;
     _client.cIsUpgrade = false;
@@ -53,29 +58,72 @@ void WebSocketsClient::begin(const char *host, uint16_t port, const char * url)
     _client.cExtensions = "";
     _client.cVersion = 0;
 
+#ifdef ESP8266
+    randomSeed(RANDOM_REG32);
+#else
     // todo find better seed
     randomSeed(millis());
+#endif
 }
 
 void WebSocketsClient::begin(String host, uint16_t port, String url) {
     begin(host.c_str(), port, url.c_str());
 }
 
+#if (WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266)
+void WebSocketsClient::beginSSL(const char *host, uint16_t port, const char * url) {
+    begin(host, port, url);
+    _client.isSSL = true;
+}
+
+void WebSocketsClient::beginSSL(String host, uint16_t port, String url) {
+    beginSSL(host.c_str(), port, url.c_str());
+}
+#endif
+
 /**
  * called in arduino loop
  */
 void WebSocketsClient::loop(void) {
     if(!clientIsConnected(&_client)) {
-        if(_client.tcp.connect(_host.c_str(), _port)) {
+
+#if (WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266)
+        if(_client.isSSL) {
+            DEBUG_WEBSOCKETS("[WS-Client] connect wss...\n");
+            if(_client.ssl) {
+                delete _client.ssl;
+                _client.ssl = NULL;
+                _client.tcp = NULL;
+            }
+            _client.ssl = new WiFiClientSecure();
+            _client.tcp = _client.ssl;
+        } else {
+            DEBUG_WEBSOCKETS("[WS-Client] connect ws...\n");
+            if(_client.tcp) {
+                delete _client.tcp;
+                _client.tcp = NULL;
+            }
+            _client.tcp = new WiFiClient();
+        }
+#else
+        _client.tcp = new WEBSOCKETS_NETWORK_CLASS();
+#endif
+
+        if(!_client.tcp) {
+            DEBUG_WEBSOCKETS("[WS-Client] creating Network class failed!");
+            return;
+        }
+
+        if(_client.tcp->connect(_host.c_str(), _port)) {
             DEBUG_WEBSOCKETS("[WS-Client] connected to %s:%u.\n", _host.c_str(), _port);
 
             _client.status = WSC_HEADER;
 
             // set Timeout for readBytesUntil and readStringUntil
-            _client.tcp.setTimeout(WEBSOCKETS_TCP_TIMEOUT);
+            _client.tcp->setTimeout(WEBSOCKETS_TCP_TIMEOUT);
 
-#ifdef ESP8266
-            _client.tcp.setNoDelay(true);
+#if (WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266)
+            _client.tcp->setNoDelay(true);
 #endif
 
             // send Header to Server
@@ -190,9 +238,25 @@ void WebSocketsClient::messageRecived(WSclient_t * client, WSopcode_t opcode, ui
  */
 void WebSocketsClient::clientDisconnect(WSclient_t * client) {
 
+#if (WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266)
+    if(client->isSSL && client->ssl) {
+        if(client->ssl->connected()) {
+            client->ssl->flush();
+            client->ssl->stop();
+        }
+        delete client->ssl;
+        client->ssl = NULL;
+        client->tcp = NULL;
+    }
+#endif
+
     if(client->tcp) {
-        client->tcp.flush();
-        client->tcp.stop();
+        if(client->tcp->connected()) {
+            client->tcp->flush();
+            client->tcp->stop();
+        }
+        delete client->tcp;
+        client->tcp = NULL;
     }
 
     client->cCode = 0;
@@ -218,14 +282,28 @@ void WebSocketsClient::clientDisconnect(WSclient_t * client) {
  */
 bool WebSocketsClient::clientIsConnected(WSclient_t * client) {
 
-    if(client->status != WSC_NOT_CONNECTED && client->tcp.connected()) {
-        return true;
+    if(!client->tcp) {
+        return false;
     }
 
-    if(client->status != WSC_NOT_CONNECTED) {
-        // cleanup
-        clientDisconnect(&_client);
+    if(client->tcp->connected()) {
+        if(client->status != WSC_NOT_CONNECTED) {
+            return true;
+        }
+    } else {
+        // client lost
+        if(client->status != WSC_NOT_CONNECTED) {
+            DEBUG_WEBSOCKETS("[WS-Client] connection lost.\n");
+            // do cleanup
+            clientDisconnect(client);
+        }
     }
+
+    if(client->tcp) {
+        // do cleanup
+        clientDisconnect(client);
+    }
+
     return false;
 }
 
@@ -233,7 +311,7 @@ bool WebSocketsClient::clientIsConnected(WSclient_t * client) {
  * Handel incomming data from Client
  */
 void WebSocketsClient::handleClientData(void) {
-    int len = _client.tcp.available();
+    int len = _client.tcp->available();
     if(len > 0) {
         switch(_client.status) {
             case WSC_HEADER:
@@ -285,7 +363,7 @@ void WebSocketsClient::sendHeader(WSclient_t * client) {
 
     handshake += "\r\n";
 
-    client->tcp.write(handshake.c_str(), handshake.length());
+    client->tcp->write(handshake.c_str(), handshake.length());
 
     DEBUG_WEBSOCKETS("[WS-Client][sendHeader] sending header... Done (%uus).\n", (micros() - start));
 
@@ -297,7 +375,7 @@ void WebSocketsClient::sendHeader(WSclient_t * client) {
  */
 void WebSocketsClient::handleHeader(WSclient_t * client) {
 
-    String headerLine = client->tcp.readStringUntil('\n');
+    String headerLine = client->tcp->readStringUntil('\n');
     headerLine.trim(); // remove \r
 
     if(headerLine.length() > 0) {
@@ -388,7 +466,7 @@ void WebSocketsClient::handleHeader(WSclient_t * client) {
 
         } else {
             DEBUG_WEBSOCKETS("[WS-Client][handleHeader] no Websocket connection close.\n");
-            client->tcp.write("This is a webSocket client!");
+            client->tcp->write("This is a webSocket client!");
             clientDisconnect(client);
         }
     }

src/WebSocketsClient.h

@@ -26,17 +26,6 @@
 #define WEBSOCKETSCLIENT_H_
 
 #include <Arduino.h>
-
-#ifdef ESP8266
-#include <ESP8266WiFi.h>
-#else
-#include <UIPEthernet.h>
-#ifndef UIPETHERNET_H
-#include <Ethernet.h>
-#include <SPI.h>
-#endif
-#endif
-
 #include "WebSockets.h"
 
 class WebSocketsClient: private WebSockets {
@@ -50,6 +39,11 @@ class WebSocketsClient: private WebSockets {
         void begin(const char *host, uint16_t port, const char * url = "/");
         void begin(String host, uint16_t port, String url = "/");
 
+#if (WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266)
+        void beginSSL(const char *host, uint16_t port, const char * url = "/");
+        void beginSSL(String host, uint16_t port, String url = "/");
+#endif
+
         void loop(void);
 
         void onEvent(WebSocketClientEvent cbEvent);

src/WebSocketsServer.cpp

@@ -27,14 +27,17 @@
 
 WebSocketsServer::WebSocketsServer(uint16_t port) {
     _port = port;
-    _server = new WiFiServer(port);
+    _server = new WEBSOCKETS_NETWORK_SERVER_CLASS(port);
 
     _cbEvent = NULL;
 
 }
 
 WebSocketsServer::~WebSocketsServer() {
-    // todo how to close server?
+    // disconnect all clients
+    disconnect();
+
+    // TODO how to close server?
 }
 
 /**
@@ -48,20 +51,31 @@ void WebSocketsServer::begin(void) {
         client = &_clients[i];
 
         client->num = i;
+        client->status = WSC_NOT_CONNECTED;
+        client->tcp = NULL;
+#if (WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266)
+        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->status = WSC_NOT_CONNECTED;
     }
 
-    // todo find better seed
+#ifdef ESP8266
+    randomSeed(RANDOM_REG32);
+#else
+    // TODO find better seed
     randomSeed(millis());
+#endif
 
     _server->begin();
+
+    DEBUG_WEBSOCKETS("[WS-Server] Server Started.\n");
 }
 
 /**
@@ -226,6 +240,7 @@ void WebSocketsServer::disconnect(uint8_t num) {
     }
 }
 
+#if (WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266)
 /**
  * get an IP for a client
  * @param num uint8_t client id
@@ -235,12 +250,13 @@ IPAddress WebSocketsServer::remoteIP(uint8_t num) {
     if(num < WEBSOCKETS_SERVER_CLIENT_MAX) {
         WSclient_t * client = &_clients[num];
         if(clientIsConnected(client)) {
-            return client->tcp.remoteIP();
+            return client->tcp->remoteIP();
         }
     }
 
     return IPAddress();
 }
+#endif
 
 //#################################################################################
 //#################################################################################
@@ -275,9 +291,26 @@ void WebSocketsServer::messageRecived(WSclient_t * client, WSopcode_t opcode, ui
  */
 void WebSocketsServer::clientDisconnect(WSclient_t * client) {
 
+
+#if (WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266)
+    if(client->isSSL && client->ssl) {
+        if(client->ssl->connected()) {
+            client->ssl->flush();
+            client->ssl->stop();
+        }
+        delete client->ssl;
+        client->ssl = NULL;
+        client->tcp = NULL;
+    }
+#endif
+
     if(client->tcp) {
-        client->tcp.flush();
-        client->tcp.stop();
+        if(client->tcp->connected()) {
+            client->tcp->flush();
+            client->tcp->stop();
+        }
+        delete client->tcp;
+        client->tcp = NULL;
     }
 
     client->cUrl = "";
@@ -302,14 +335,28 @@ void WebSocketsServer::clientDisconnect(WSclient_t * client) {
  */
 bool WebSocketsServer::clientIsConnected(WSclient_t * client) {
 
-    if(client->status != WSC_NOT_CONNECTED && client->tcp.connected()) {
-        return true;
+    if(!client->tcp) {
+        return false;
     }
 
-    if(client->status != WSC_NOT_CONNECTED) {
-        // cleanup
+    if(client->tcp->connected()) {
+        if(client->status != WSC_NOT_CONNECTED) {
+            return true;
+        }
+    } else {
+        // client lost
+        if(client->status != WSC_NOT_CONNECTED) {
+            DEBUG_WEBSOCKETS("[WS-Server][%d] client connection lost.\n", client->num);
+            // do cleanup
+            clientDisconnect(client);
+        }
+    }
+
+    if(client->tcp) {
+        // do cleanup
         clientDisconnect(client);
     }
+
     return false;
 }
 
@@ -318,7 +365,9 @@ bool WebSocketsServer::clientIsConnected(WSclient_t * client) {
  */
 void WebSocketsServer::handleNewClients(void) {
     WSclient_t * client;
+#if (WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266)
     while(_server->hasClient()) {
+#endif
         bool ok = false;
         // search free list entry for client
         for(uint8_t i = 0; i < WEBSOCKETS_SERVER_CLIENT_MAX; i++) {
@@ -326,18 +375,30 @@ void WebSocketsServer::handleNewClients(void) {
 
             // state is not connected or tcp connection is lost
             if(!clientIsConnected(client)) {
-
+#if (WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266)
                 // store new connection
-                client->tcp = _server->available();
-#ifdef ESP8266
-                client->tcp.setNoDelay(true);
+                client->tcp = new WEBSOCKETS_NETWORK_CLASS(_server->available());
+#else
+                client->tcp = new WEBSOCKETS_NETWORK_CLASS(_server->available());
+#endif
+                if(!client->tcp) {
+                    DEBUG_WEBSOCKETS("[WS-Client] creating Network class failed!");
+                    return;
+                }
+
+#if (WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266)
+                client->isSSL = false;
+                client->tcp->setNoDelay(true);
 #endif
                 // set Timeout for readBytesUntil and readStringUntil
-                client->tcp.setTimeout(WEBSOCKETS_TCP_TIMEOUT);
+                client->tcp->setTimeout(WEBSOCKETS_TCP_TIMEOUT);
                 client->status = WSC_HEADER;
-
-                IPAddress ip = client->tcp.remoteIP();
+#if (WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266)
+                IPAddress ip = client->tcp->remoteIP();
                 DEBUG_WEBSOCKETS("[WS-Server][%d] new client from %d.%d.%d.%d\n", client->num, ip[0], ip[1], ip[2], ip[3]);
+#else
+                DEBUG_WEBSOCKETS("[WS-Server][%d] new client\n", client->num);
+#endif
                 ok = true;
                 break;
             }
@@ -345,16 +406,22 @@ void WebSocketsServer::handleNewClients(void) {
 
         if(!ok) {
             // no free space to handle client
-            WiFiClient tcpClient = _server->available();
-            IPAddress ip = tcpClient.remoteIP();
+            WEBSOCKETS_NETWORK_CLASS tcpClient = _server->available();
+#if (WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266)
+            IPAddress ip = client->tcp->remoteIP();
             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();
         }
 
 #ifdef ESP8266
         delay(0);
 #endif
+#if (WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266)
     }
+#endif
 }
 
 /**
@@ -366,7 +433,7 @@ void WebSocketsServer::handleClientData(void) {
     for(uint8_t i = 0; i < WEBSOCKETS_SERVER_CLIENT_MAX; i++) {
         client = &_clients[i];
         if(clientIsConnected(client)) {
-            int len = client->tcp.available();
+            int len = client->tcp->available();
             if(len > 0) {
 
                 switch(client->status) {
@@ -394,7 +461,7 @@ void WebSocketsServer::handleClientData(void) {
  */
 void WebSocketsServer::handleHeader(WSclient_t * client) {
 
-    String headerLine = client->tcp.readStringUntil('\n');
+    String headerLine = client->tcp->readStringUntil('\n');
     headerLine.trim(); // remove \r
 
     if(headerLine.length() > 0) {
@@ -466,22 +533,22 @@ void WebSocketsServer::handleHeader(WSclient_t * client) {
 
             client->status = WSC_CONNECTED;
 
-            client->tcp.write("HTTP/1.1 101 Switching Protocols\r\n"
+            client->tcp->write("HTTP/1.1 101 Switching Protocols\r\n"
                     "Server: arduino-WebSocketsServer\r\n"
                     "Upgrade: websocket\r\n"
                     "Connection: Upgrade\r\n"
                     "Sec-WebSocket-Version: 13\r\n"
                     "Sec-WebSocket-Accept: ");
-            client->tcp.write(sKey.c_str(), sKey.length());
-            client->tcp.write("\r\n");
+            client->tcp->write(sKey.c_str(), sKey.length());
+            client->tcp->write("\r\n");
 
             if(client->cProtocol.length() > 0) {
-                // todo add api to set Protocol of Server
-                client->tcp.write("Sec-WebSocket-Protocol: arduino\r\n");
+                // TODO add api to set Protocol of Server
+                client->tcp->write("Sec-WebSocket-Protocol: arduino\r\n");
             }
 
             // header end
-            client->tcp.write("\r\n");
+            client->tcp->write("\r\n");
 
             // send ping
             WebSockets::sendFrame(client, WSop_ping);

src/WebSocketsServer.h

@@ -26,17 +26,6 @@
 #define WEBSOCKETSSERVER_H_
 
 #include <Arduino.h>
-
-#ifdef ESP8266
-#include <ESP8266WiFi.h>
-#else
-#include <UIPEthernet.h>
-#ifndef UIPETHERNET_H
-#include <Ethernet.h>
-#include <SPI.h>
-#endif
-#endif
-
 #include "WebSockets.h"
 
 #define WEBSOCKETS_SERVER_CLIENT_MAX  (5)
@@ -79,20 +68,14 @@ public:
         void disconnect(void);
         void disconnect(uint8_t num);
 
+#if (WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266)
         IPAddress remoteIP(uint8_t num);
+#endif
 
 protected:
         uint16_t _port;
 
-#ifdef ESP8266
-        WiFiServer * _server;
-#else
-#ifdef UIPETHERNET_H
-        UIPServer * _server;
-#else
-        EthernetServer * _server;
-#endif
-#endif
+        WEBSOCKETS_NETWORK_SERVER_CLASS * _server;
 
         WSclient_t _clients[WEBSOCKETS_SERVER_CLIENT_MAX];
 
@@ -115,7 +98,7 @@ protected:
          */
         virtual void handleNonWebsocketConnection(WSclient_t * client) {
             DEBUG_WEBSOCKETS("[WS-Server][%d][handleHeader] no Websocket connection close.\n", client->num);
-            client->tcp.write("HTTP/1.1 400 Bad Request\r\n"
+            client->tcp->write("HTTP/1.1 400 Bad Request\r\n"
                     "Server: arduino-WebSocket-Server\r\n"
                     "Content-Type: text/plain\r\n"
                     "Content-Length: 32\r\n"

src/libb64/cdecode.c

@@ -5,7 +5,12 @@ This is part of the libb64 project, and has been placed in the public domain.
 For details, see http://sourceforge.net/projects/libb64
 */
 
-#include "cdecode.h"
+#ifdef ESP8266
+#include <core_esp8266_features.h>
+#endif
+
+#ifndef CORE_HAS_LIBB64
+#include "cdecode_inc.h"
 
 int base64_decode_value(char value_in)
 {
@@ -86,3 +91,4 @@ int base64_decode_block(const char* code_in, const int length_in, char* plaintex
 	return plainchar - plaintext_out;
 }
 
+#endif

src/libb64/cencode.c

@@ -5,7 +5,12 @@ This is part of the libb64 project, and has been placed in the public domain.
 For details, see http://sourceforge.net/projects/libb64
 */
 
-#include "cencode.h"
+#ifdef ESP8266
+#include <core_esp8266_features.h>
+#endif
+
+#ifndef CORE_HAS_LIBB64
+#include "cencode_inc.h"
 
 const int CHARS_PER_LINE = 72;
 
@@ -107,3 +112,4 @@ int base64_encode_blockend(char* code_out, base64_encodestate* state_in)
 	return codechar - code_out;
 }
 
+#endif

src/libsha1/libsha1.c

@@ -0,0 +1,202 @@
+/* from valgrind tests */
+
+/* ================ sha1.c ================ */
+/*
+SHA-1 in C
+By Steve Reid <steve@edmweb.com>
+100% Public Domain
+
+Test Vectors (from FIPS PUB 180-1)
+"abc"
+  A9993E36 4706816A BA3E2571 7850C26C 9CD0D89D
+"abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq"
+  84983E44 1C3BD26E BAAE4AA1 F95129E5 E54670F1
+A million repetitions of "a"
+  34AA973C D4C4DAA4 F61EEB2B DBAD2731 6534016F
+*/
+
+/* #define LITTLE_ENDIAN * This should be #define'd already, if true. */
+/* #define SHA1HANDSOFF * Copies data before messing with it. */
+
+#ifndef ESP8266
+
+#define SHA1HANDSOFF
+
+#include <stdio.h>
+#include <string.h>
+#include <stdint.h>
+
+#include "libsha1.h"
+
+
+#define rol(value, bits) (((value) << (bits)) | ((value) >> (32 - (bits))))
+
+/* blk0() and blk() perform the initial expand. */
+/* I got the idea of expanding during the round function from SSLeay */
+#if BYTE_ORDER == LITTLE_ENDIAN
+#define blk0(i) (block->l[i] = (rol(block->l[i],24)&0xFF00FF00) \
+    |(rol(block->l[i],8)&0x00FF00FF))
+#elif BYTE_ORDER == BIG_ENDIAN
+#define blk0(i) block->l[i]
+#else
+#error "Endianness not defined!"
+#endif
+#define blk(i) (block->l[i&15] = rol(block->l[(i+13)&15]^block->l[(i+8)&15] \
+    ^block->l[(i+2)&15]^block->l[i&15],1))
+
+/* (R0+R1), R2, R3, R4 are the different operations used in SHA1 */
+#define R0(v,w,x,y,z,i) z+=((w&(x^y))^y)+blk0(i)+0x5A827999+rol(v,5);w=rol(w,30);
+#define R1(v,w,x,y,z,i) z+=((w&(x^y))^y)+blk(i)+0x5A827999+rol(v,5);w=rol(w,30);
+#define R2(v,w,x,y,z,i) z+=(w^x^y)+blk(i)+0x6ED9EBA1+rol(v,5);w=rol(w,30);
+#define R3(v,w,x,y,z,i) z+=(((w|x)&y)|(w&x))+blk(i)+0x8F1BBCDC+rol(v,5);w=rol(w,30);
+#define R4(v,w,x,y,z,i) z+=(w^x^y)+blk(i)+0xCA62C1D6+rol(v,5);w=rol(w,30);
+
+
+/* Hash a single 512-bit block. This is the core of the algorithm. */
+
+void SHA1Transform(uint32_t state[5], const unsigned char buffer[64])
+{
+    uint32_t a, b, c, d, e;
+    typedef union {
+        unsigned char c[64];
+        uint32_t l[16];
+    } CHAR64LONG16;
+#ifdef SHA1HANDSOFF
+    CHAR64LONG16 block[1];  /* use array to appear as a pointer */
+    memcpy(block, buffer, 64);
+#else
+    /* The following had better never be used because it causes the
+     * pointer-to-const buffer to be cast into a pointer to non-const.
+     * And the result is written through.  I threw a "const" in, hoping
+     * this will cause a diagnostic.
+     */
+    CHAR64LONG16* block = (const CHAR64LONG16*)buffer;
+#endif
+    /* Copy context->state[] to working vars */
+    a = state[0];
+    b = state[1];
+    c = state[2];
+    d = state[3];
+    e = state[4];
+    /* 4 rounds of 20 operations each. Loop unrolled. */
+    R0(a,b,c,d,e, 0); R0(e,a,b,c,d, 1); R0(d,e,a,b,c, 2); R0(c,d,e,a,b, 3);
+    R0(b,c,d,e,a, 4); R0(a,b,c,d,e, 5); R0(e,a,b,c,d, 6); R0(d,e,a,b,c, 7);
+    R0(c,d,e,a,b, 8); R0(b,c,d,e,a, 9); R0(a,b,c,d,e,10); R0(e,a,b,c,d,11);
+    R0(d,e,a,b,c,12); R0(c,d,e,a,b,13); R0(b,c,d,e,a,14); R0(a,b,c,d,e,15);
+    R1(e,a,b,c,d,16); R1(d,e,a,b,c,17); R1(c,d,e,a,b,18); R1(b,c,d,e,a,19);
+    R2(a,b,c,d,e,20); R2(e,a,b,c,d,21); R2(d,e,a,b,c,22); R2(c,d,e,a,b,23);
+    R2(b,c,d,e,a,24); R2(a,b,c,d,e,25); R2(e,a,b,c,d,26); R2(d,e,a,b,c,27);
+    R2(c,d,e,a,b,28); R2(b,c,d,e,a,29); R2(a,b,c,d,e,30); R2(e,a,b,c,d,31);
+    R2(d,e,a,b,c,32); R2(c,d,e,a,b,33); R2(b,c,d,e,a,34); R2(a,b,c,d,e,35);
+    R2(e,a,b,c,d,36); R2(d,e,a,b,c,37); R2(c,d,e,a,b,38); R2(b,c,d,e,a,39);
+    R3(a,b,c,d,e,40); R3(e,a,b,c,d,41); R3(d,e,a,b,c,42); R3(c,d,e,a,b,43);
+    R3(b,c,d,e,a,44); R3(a,b,c,d,e,45); R3(e,a,b,c,d,46); R3(d,e,a,b,c,47);
+    R3(c,d,e,a,b,48); R3(b,c,d,e,a,49); R3(a,b,c,d,e,50); R3(e,a,b,c,d,51);
+    R3(d,e,a,b,c,52); R3(c,d,e,a,b,53); R3(b,c,d,e,a,54); R3(a,b,c,d,e,55);
+    R3(e,a,b,c,d,56); R3(d,e,a,b,c,57); R3(c,d,e,a,b,58); R3(b,c,d,e,a,59);
+    R4(a,b,c,d,e,60); R4(e,a,b,c,d,61); R4(d,e,a,b,c,62); R4(c,d,e,a,b,63);
+    R4(b,c,d,e,a,64); R4(a,b,c,d,e,65); R4(e,a,b,c,d,66); R4(d,e,a,b,c,67);
+    R4(c,d,e,a,b,68); R4(b,c,d,e,a,69); R4(a,b,c,d,e,70); R4(e,a,b,c,d,71);
+    R4(d,e,a,b,c,72); R4(c,d,e,a,b,73); R4(b,c,d,e,a,74); R4(a,b,c,d,e,75);
+    R4(e,a,b,c,d,76); R4(d,e,a,b,c,77); R4(c,d,e,a,b,78); R4(b,c,d,e,a,79);
+    /* Add the working vars back into context.state[] */
+    state[0] += a;
+    state[1] += b;
+    state[2] += c;
+    state[3] += d;
+    state[4] += e;
+    /* Wipe variables */
+    a = b = c = d = e = 0;
+#ifdef SHA1HANDSOFF
+    memset(block, '\0', sizeof(block));
+#endif
+}
+
+
+/* SHA1Init - Initialize new context */
+
+void SHA1Init(SHA1_CTX* context)
+{
+    /* SHA1 initialization constants */
+    context->state[0] = 0x67452301;
+    context->state[1] = 0xEFCDAB89;
+    context->state[2] = 0x98BADCFE;
+    context->state[3] = 0x10325476;
+    context->state[4] = 0xC3D2E1F0;
+    context->count[0] = context->count[1] = 0;
+}
+
+
+/* Run your data through this. */
+
+void SHA1Update(SHA1_CTX* context, const unsigned char* data, uint32_t len)
+{
+    uint32_t i, j;
+
+    j = context->count[0];
+    if ((context->count[0] += len << 3) < j)
+        context->count[1]++;
+    context->count[1] += (len>>29);
+    j = (j >> 3) & 63;
+    if ((j + len) > 63) {
+        memcpy(&context->buffer[j], data, (i = 64-j));
+        SHA1Transform(context->state, context->buffer);
+        for ( ; i + 63 < len; i += 64) {
+            SHA1Transform(context->state, &data[i]);
+        }
+        j = 0;
+    }
+    else i = 0;
+    memcpy(&context->buffer[j], &data[i], len - i);
+}
+
+
+/* Add padding and return the message digest. */
+
+void SHA1Final(unsigned char digest[20], SHA1_CTX* context)
+{
+    unsigned i;
+    unsigned char finalcount[8];
+    unsigned char c;
+
+#if 0	/* untested "improvement" by DHR */
+    /* Convert context->count to a sequence of bytes
+     * in finalcount.  Second element first, but
+     * big-endian order within element.
+     * But we do it all backwards.
+     */
+    unsigned char *fcp = &finalcount[8];
+
+    for (i = 0; i < 2; i++)
+       {
+        uint32_t t = context->count[i];
+        int j;
+
+        for (j = 0; j < 4; t >>= 8, j++)
+	          *--fcp = (unsigned char) t;
+    }
+#else
+    for (i = 0; i < 8; i++) {
+        finalcount[i] = (unsigned char)((context->count[(i >= 4 ? 0 : 1)]
+         >> ((3-(i & 3)) * 8) ) & 255);  /* Endian independent */
+    }
+#endif
+    c = 0200;
+    SHA1Update(context, &c, 1);
+    while ((context->count[0] & 504) != 448) {
+	c = 0000;
+        SHA1Update(context, &c, 1);
+    }
+    SHA1Update(context, finalcount, 8);  /* Should cause a SHA1Transform() */
+    for (i = 0; i < 20; i++) {
+        digest[i] = (unsigned char)
+         ((context->state[i>>2] >> ((3-(i & 3)) * 8) ) & 255);
+    }
+    /* Wipe variables */
+    memset(context, '\0', sizeof(*context));
+    memset(&finalcount, '\0', sizeof(finalcount));
+}
+/* ================ end of sha1.c ================ */
+
+
+#endif

src/libsha1/libsha1.h

@@ -0,0 +1,21 @@
+/* ================ sha1.h ================ */
+/*
+SHA-1 in C
+By Steve Reid <steve@edmweb.com>
+100% Public Domain
+*/
+
+#ifndef ESP8266
+
+typedef struct {
+    uint32_t state[5];
+    uint32_t count[2];
+    unsigned char buffer[64];
+} SHA1_CTX;
+
+void SHA1Transform(uint32_t state[5], const unsigned char buffer[64]);
+void SHA1Init(SHA1_CTX* context);
+void SHA1Update(SHA1_CTX* context, const unsigned char* data, uint32_t len);
+void SHA1Final(unsigned char digest[20], SHA1_CTX* context);
+
+#endif