Make library compatible with Particle devices

README.md

@@ -52,6 +52,10 @@ The mode can be aktivated in the ```WebSockets.h``` (see WEBSOCKETS_NETWORK_TYPE
 
 [ESPAsyncTCP](https://github.com/me-no-dev/ESPAsyncTCP) libary is required.
 
+### Support for Particle devices ###
+- ESP.getFreeHeap() replaced by macro GET_FREE_HEAP, defined by the type of device (currently only for ESP and STM32-based/Particle devices).
+- Use Particle's TCPClient and TCPServer classes instead of Arduino's.
+
 ### Issues ###
 Submit issues to: https://github.com/Links2004/arduinoWebSockets/issues
 

examples/ParticleWebSocketClient/application.cpp

@@ -0,0 +1,46 @@
+/* To compile using make CLI, create a folder under \firmware\user\applications and copy application.cpp there.
+*  Then, copy src files under particleWebSocket folder.
+*/
+
+#include "application.h"
+#include "particleWebSocket/WebSocketsClient.h"
+
+WebSocketsClient webSocket;
+
+void webSocketEvent(WStype_t type, uint8_t* payload, size_t length)
+{
+	switch (type)
+	{
+	case WStype_DISCONNECTED:
+		Serial.printlnf("[WSc] Disconnected!");
+		break;
+	case WStype_CONNECTED:
+		Serial.printlnf("[WSc] Connected to URL: %s", payload);
+		webSocket.sendTXT("Connected\r\n");
+		break;
+	case WStype_TEXT:
+		Serial.printlnf("[WSc] get text: %s", payload);
+		break;
+	case WStype_BIN:
+		Serial.printlnf("[WSc] get binary length: %u", length);
+		break;
+	}
+}
+
+void setup()
+{
+	Serial.begin(9600);
+	
+	WiFi.setCredentials("[SSID]", "[PASSWORD]", WPA2, WLAN_CIPHER_AES_TKIP);
+	WiFi.connect();
+	    
+	webSocket.begin("192.168.1.153", 85, "/ClientService/?variable=Test1212");
+	webSocket.onEvent(webSocketEvent);
+}
+
+void loop()
+{
+	webSocket.sendTXT("Hello world!");
+	delay(500);
+	webSocket.loop();
+}

src/WebSockets.cpp

@@ -123,7 +123,7 @@ bool WebSockets::sendFrame(WSclient_t * client, WSopcode_t opcode, uint8_t * pay
 #ifdef WEBSOCKETS_USE_BIG_MEM
     // only for ESP since AVR has less HEAP
     // try to send data in one TCP package (only if some free Heap is there)
-    if(!headerToPayload && ((length > 0) && (length < 1400)) && (ESP.getFreeHeap() > 6000)) {
+    if(!headerToPayload && ((length > 0) && (length < 1400)) && (GET_FREE_HEAP > 6000)) {
         DEBUG_WEBSOCKETS("[WS][%d][sendFrame] pack to one TCP package...\n", client->num);
         uint8_t * dataPtr = (uint8_t *) malloc(length + WEBSOCKETS_MAX_HEADER_SIZE);
         if(dataPtr) {

src/WebSockets.h

@@ -25,7 +25,12 @@
 #ifndef WEBSOCKETS_H_
 #define WEBSOCKETS_H_
 
+#ifdef STM32_DEVICE
+#include <application.h>
+#define bit(b) (1UL << (b)) // Taken directly from Arduino.h
+#else
 #include <Arduino.h>
+#endif
 
 //#define DEBUG_WEBSOCKETS(...) os_printf( __VA_ARGS__ )
 
@@ -37,10 +42,17 @@
 #ifdef ESP8266
 #define WEBSOCKETS_MAX_DATA_SIZE  (15*1024)
 #define WEBSOCKETS_USE_BIG_MEM
+#define GET_FREE_HEAP ESP.getFreeHeap()
+#else
+#ifdef STM32_DEVICE
+#define WEBSOCKETS_MAX_DATA_SIZE  (15*1024)
+#define WEBSOCKETS_USE_BIG_MEM
+#define GET_FREE_HEAP System.freeMemory()
 #else
 //atmega328p has only 2KB ram!
 #define WEBSOCKETS_MAX_DATA_SIZE  (1024)
 #endif
+#endif
 
 #define WEBSOCKETS_TCP_TIMEOUT    (2000)
 
@@ -98,10 +110,15 @@
 
 #elif (WEBSOCKETS_NETWORK_TYPE == NETWORK_W5100)
 
+#ifdef STM32_DEVICE
+#define WEBSOCKETS_NETWORK_CLASS TCPClient
+#define WEBSOCKETS_NETWORK_SERVER_CLASS TCPServer
+#else
 #include <Ethernet.h>
 #include <SPI.h>
 #define WEBSOCKETS_NETWORK_CLASS EthernetClient
 #define WEBSOCKETS_NETWORK_SERVER_CLASS EthernetServer
+#endif
 
 #elif (WEBSOCKETS_NETWORK_TYPE == NETWORK_ENC28J60)
 

src/WebSocketsClient.cpp

@@ -443,7 +443,7 @@ void WebSocketsClient::sendHeader(WSclient_t * client) {
 
     handshake += "\r\n";
 
-    client->tcp->write(handshake.c_str(), handshake.length());
+    client->tcp->write((uint8_t*)handshake.c_str(), handshake.length());
 
 #if (WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266_ASYNC)
         client->tcp->readStringUntil('\n', &(client->cHttpLine), std::bind(&WebSocketsClient::handleHeader, this, client, &(client->cHttpLine)));

src/WebSocketsClient.h

@@ -25,7 +25,6 @@
 #ifndef WEBSOCKETSCLIENT_H_
 #define WEBSOCKETSCLIENT_H_
 
-#include <Arduino.h>
 #include "WebSockets.h"
 
 class WebSocketsClient: private WebSockets {

src/WebSocketsServer.cpp

@@ -739,20 +739,20 @@ void WebSocketsServer::handleHeader(WSclient_t * client, String * headerLine) {
                     "Connection: Upgrade\r\n"
                     "Sec-WebSocket-Version: 13\r\n"
                     "Sec-WebSocket-Accept: ");
-            client->tcp->write(sKey.c_str(), sKey.length());
+            client->tcp->write((uint8_t*)sKey.c_str(), sKey.length());
 
             if(_origin.length() > 0) {
                 String origin = "\r\nAccess-Control-Allow-Origin: ";
                 origin += _origin;
                 origin += "\r\n";
-                client->tcp->write(origin.c_str(), origin.length());
+                client->tcp->write((uint8_t*)origin.c_str(), origin.length());
             }
 
             if(client->cProtocol.length() > 0) {
                 String protocol = "\r\nSec-WebSocket-Protocol: ";
                 protocol += _protocol;
                 protocol += "\r\n";
-                client->tcp->write(protocol.c_str(), protocol.length());
+                client->tcp->write((uint8_t*)protocol.c_str(), protocol.length());
             } else {
                 client->tcp->write("\r\n");
             }

src/WebSocketsServer.h

@@ -25,7 +25,6 @@
 #ifndef WEBSOCKETSSERVER_H_
 #define WEBSOCKETSSERVER_H_
 
-#include <Arduino.h>
 #include "WebSockets.h"
 
 #define WEBSOCKETS_SERVER_CLIENT_MAX  (5)