add jsmpeg relay

jsmpeg/relay.js

@@ -0,0 +1,54 @@
+// Use the websocket-relay to serve a raw MPEG-TS over WebSockets. You can use
+// ffmpeg to feed the relay. ffmpeg -> websocket-relay -> browser
+// Example:
+// node relay 8081 8082
+// ffmpeg -i <some input> -f mpegts http://localhost:8081/streamName
+
+var http = require('http'),
+    WebSocket = require('ws');
+
+var STREAM_PORT = process.argv[2] || 8081,
+	WEBSOCKET_PORT = process.argv[3] || 8082;
+
+// Websocket Server
+var socketServer = new WebSocket.Server({ port: WEBSOCKET_PORT, perMessageDeflate: false });
+
+socketServer.on('connection', function (socket, request) {
+    var streamName = request.url.substr(1).split('/')[0];
+
+    socket.stream = streamName;
+
+	console.log(
+		'New WebSocket connection for: ',
+		streamName
+    );
+});
+
+socketServer.broadcast = function(data, streamName) {
+	socketServer.clients.forEach(function each(client) {
+		if (client.readyState === WebSocket.OPEN && client.stream === streamName) {
+			client.send(data);
+		}
+	});
+};
+
+// HTTP Server to accept incoming MPEG-TS Stream from ffmpeg
+var streamServer = http.createServer( function(request, response) {
+    var streamName = request.url.substr(1).split('/')[0];
+
+	response.connection.setTimeout(0);
+	console.log(
+		'Stream Connected: ',
+		streamName
+	);
+	request.on('data', function(data){
+		socketServer.broadcast(data, streamName);
+	});
+})
+
+// Keep the socket open for streaming
+streamServer.headersTimeout = 0;
+streamServer.listen(STREAM_PORT);
+
+console.log('Listening for incoming MPEG-TS Stream on http://127.0.0.1:'+STREAM_PORT+'/<streamName>');
+console.log('Awaiting WebSocket connections on ws://127.0.0.1:'+WEBSOCKET_PORT+'/');