Socket.IO issue with control chars
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:
- If I send a string constant to an established socket when something is entered in the console it works ok.
- 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.
- If I send a local string (instead of the one received from the other scope) it's sent correctly. (commented line: client.send(message) )
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:
// Sample based on: http://elegantcode.com/2011/05/04/taking-baby-steps-with-node-js-websockets/
// Changed for sockets.io 6.x => 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");
UPDATE: 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.
Fixed with socket.io v0.8.6. This q should be answered/closed.