A WebSocketClient that implements Client.h so that the PubCubClient MQTT library can use it - with wss or ws.

The mosquitto websocket implementation requires the Sec-WebSocket-Protocol header. To achive this I needed to fork arduino-libraries/ArduinoHttpClient to riddlesio/ArduinoHttpClient

• [Fork of ArduinoHttpClient]((https://github.com/riddlesio/ArduinoHttpClient) and all of it's dependencys. Because this works with esp8266/2.4.2 but not with esp8266/2.5.0, use the supplied WebSocketClient250 class instead.

WITH Board version 2.7.X : (don't work on previous versions) no more use of websocketclient250 (websocketstream updated to meet client.h declarations)

<!> IF the size of MQTT MESSAGE is > 128 bytes, the websocket hang => add (pubsubclient) .setBufferSize(512) => change in websocket.h iTxBuffer[512]

Tested with esp8266/2.5.0 AND ALSO 2.6.3 Board libraries. There is an example node.js server that you can use here with this library at web-socket-mqtt.

See examples folder for a complete program.

void onMqttPublish(char *topic, byte *payload, unsigned int length)
{
  // handle mqtt messages here
}

WiFiClientSecure wiFiClient;
WebSocketClient wsClient(wiFiClient, host, port);
WebSocketStreamClient wsStreamClient(wsClient, path, protocol);
PubSubClient mqtt(wsStreamClient);

wiFiClient.setFingerprint(fingerprint);
mqtt.setCallback(onMqttPublish);

if (mqtt.connect("your_identifier"))
{
  mqtt.publish("topic1", "hello world");
  mqtt.subscribe("topic2");
}