/
testserver.js
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testserver.js
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var http = require('http')
, util = require('util')
, crypto = require('crypto')
, events = require('events')
, Sender = require('../lib/Sender')
, Receiver = require('../lib/Receiver');
module.exports = {
handlers: {
valid: validServer,
invalidKey: invalidRequestHandler,
closeAfterConnect: closeAfterConnectHandler
},
createServer: function(port, handler, cb) {
if (handler && !cb) {
cb = handler;
handler = null;
}
var webServer = http.createServer(function (req, res) {
res.writeHead(200, {'Content-Type': 'text/plain'});
res.end('okay');
});
var srv = new Server(webServer);
webServer.on('upgrade', function(req, socket) {
webServer._socket = socket;
(handler || validServer)(srv, req, socket);
});
webServer.listen(port, '127.0.0.1', function() { cb(srv); });
}
};
/**
* Test strategies
*/
function validServer(server, req, socket) {
if (typeof req.headers.upgrade === 'undefined' ||
req.headers.upgrade.toLowerCase() !== 'websocket') {
throw new Error('invalid headers');
return;
}
if (!req.headers['sec-websocket-key']) {
socket.end();
throw new Error('websocket key is missing');
}
// calc key
var key = req.headers['sec-websocket-key'];
var shasum = crypto.createHash('sha1');
shasum.update(key + "258EAFA5-E914-47DA-95CA-C5AB0DC85B11");
key = shasum.digest('base64');
var headers = [
'HTTP/1.1 101 Switching Protocols'
, 'Upgrade: websocket'
, 'Connection: Upgrade'
, 'Sec-WebSocket-Accept: ' + key
];
socket.write(headers.concat('', '').join('\r\n'));
socket.setTimeout(0);
socket.setNoDelay(true);
var sender = new Sender(socket);
var receiver = new Receiver();
receiver.on('text', function (message, flags) {
server.emit('message', message, flags);
sender.send(message);
});
receiver.on('binary', function (message, flags) {
flags = flags || {};
flags.binary = true;
server.emit('message', message, flags);
sender.send(message, {binary: true});
});
receiver.on('ping', function (message, flags) {
flags = flags || {};
server.emit('ping', message, flags);
});
receiver.on('pong', function (message, flags) {
flags = flags || {};
server.emit('pong', message, flags);
});
receiver.on('close', function (code, message, flags) {
flags = flags || {};
server.emit('close', code, message, flags);
});
socket.on('data', function (data) {
receiver.add(data);
});
socket.on('end', function() {
socket.end();
});
}
function invalidRequestHandler(server, req, socket) {
if (typeof req.headers.upgrade === 'undefined' ||
req.headers.upgrade.toLowerCase() !== 'websocket') {
throw new Error('invalid headers');
return;
}
if (!req.headers['sec-websocket-key']) {
socket.end();
throw new Error('websocket key is missing');
}
// calc key
var key = req.headers['sec-websocket-key'];
var shasum = crypto.createHash('sha1');
shasum.update(key + "bogus");
key = shasum.digest('base64');
var headers = [
'HTTP/1.1 101 Switching Protocols'
, 'Upgrade: websocket'
, 'Connection: Upgrade'
, 'Sec-WebSocket-Accept: ' + key
];
socket.write(headers.concat('', '').join('\r\n'));
socket.end();
}
function closeAfterConnectHandler(server, req, socket) {
if (typeof req.headers.upgrade === 'undefined' ||
req.headers.upgrade.toLowerCase() !== 'websocket') {
throw new Error('invalid headers');
return;
}
if (!req.headers['sec-websocket-key']) {
socket.end();
throw new Error('websocket key is missing');
}
// calc key
var key = req.headers['sec-websocket-key'];
var shasum = crypto.createHash('sha1');
shasum.update(key + "258EAFA5-E914-47DA-95CA-C5AB0DC85B11");
key = shasum.digest('base64');
var headers = [
'HTTP/1.1 101 Switching Protocols'
, 'Upgrade: websocket'
, 'Connection: Upgrade'
, 'Sec-WebSocket-Accept: ' + key
];
socket.write(headers.concat('', '').join('\r\n'));
socket.end();
}
/**
* Server object, which will do the actual emitting
*/
function Server(webServer) {
this.webServer = webServer;
}
util.inherits(Server, events.EventEmitter);
Server.prototype.close = function() {
this.webServer.close();
if (this._socket) this._socket.end();
}