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POSocket.IO issue with control chars
 

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    <p>I am implementing an application that uses websockets and a console accessed via Telnet. There is a communication between the connection established via websockets and the console. I am experiencing a weird issue:</p> <ul> <li>If I send a string constant to an established socket when something is entered in the console it works ok.</li> <li>If I send a string received from the console scope It seems to open a new socket (not sure) because in the debug log I see it and in the browser side (websockets) it alerts me of a new connection.</li> <li>If I send a local string (instead of the one received from the other scope) it's sent correctly. (commented line: client.send(message) )</li> </ul> <p>I share here the nodeJS code, take into account that this is now a test app so it's assumed only one socket and websockets connection:</p> <pre><code>// Sample based on: http://elegantcode.com/2011/05/04/taking-baby-steps-with-node-js-websockets/ // Changed for sockets.io 6.x =&gt; 7.x var events = require('events'); var eventEmitter = new events.EventEmitter(); var http = require('http'); var socketIO = require('socket.io'); var static = require('node-static'); var port = 2000; var clientFiles = new static.Server('./client'); var httpServer = http.createServer( function(request, response) { request.addListener('end', function() { clientFiles.serve(request, response); }); }) httpServer.listen(port); console.log("Server running at port: " + port); var io = require('socket.io').listen(httpServer); var webSocket = io.sockets; webSocket.on('connection', function(client) { client.send('Please enter a user name ...'); var userName; eventEmitter.on('someOccurence', function(message) { console.log("Received: " + message); client.send('Line Received'); var s = 'popo'; client.send(s); //client.send(message); }); client.on('message', function(message) { console.log(message); if(!userName) { userName = message; client.broadcast.send(message + ' has entered the zone.'); return; } var broadcastMessage = userName + ': ' + message; client.broadcast.send(broadcastMessage); client.send("Repeated here: " + message); }); client.on('disconnect', function() { var broadcastMessage = userName + ' has left the zone.'; client.broadcast.send(broadcastMessage); }); }); var lines = require('lines-adapter'); var net = require('net'); var server = net.createServer(function (socket) { socket.write("Welcome to the Server\r\n"); lines(socket, 'utf8') .on("data", function(line) { console.log("Line received: " + line); eventEmitter.emit('someOccurence', line); } ) .end("end", function() { console.log("End of Stream"); } ); }); server.listen(1337, "127.0.0.1"); </code></pre> <hr> <p><strong>UPDATE:</strong> I just tested with socket.io 0.8.6 and nodeJS 0.4.12 without this issue. I will keep this question here for future reference. </p>
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    1. COResearching further I can see that the bug is located around the socket.io code because if I test the same code using the net library under nodejs with two listening servers everything works fine. Currently I don't have the knowledge to pinpoint if there is a bug in my code, in socket.io or in nodeJS.
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    2. COMore information: it seems related to telnet control chars and/or "\n"
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    3. COit's '\r' actually.
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