npm install -g websocket-bench 

Usage: websocket-bench [options] <server> Options: -h, --help output usage information -V, --version output the version number -a, --amount <n> Total number of persistent connection, Default to 100 -c, --concurency <n> Concurent connection per second, Default to 20 -w, --worker <n> number of worker -g, --generator <file> js file for generate message or special event -m, --message <n> number of message for a client. Default to 0 -o, --output <output> Output file -t, --type <type> type of websocket server to bench(socket.io, faye, primus). Default to socket.io -p, --transport <type> type of transport to websocket(engine.io, websockets, browserchannel, sockjs, socket.io). Default to websockets (Just for Primus) -k, --keep-alive Keep alive connection 

(function() { /** * Before connection (optional, just for faye) * @param {client} client connection */ exports.beforeConnect = function(client) { // Example: // client.setHeader('Authorization', 'OAuth abcd-1234'); // client.disable('websocket'); }; /** * On client connection (required) * @param {client} client connection * @param {done} callback function(err) {} */ exports.onConnect = function(client, done) { // Faye client // client.subscribe('/channel', function(message) { }); // Socket.io client // client.emit('test', { hello: 'world' }); // Primus client // client.write('Sailing the seas of cheese'); done(); }; /** * Send a message (required) * @param {client} client connection * @param {done} callback function(err) {} */ exports.sendMessage = function(client, done) { // Example: // client.emit('test', { hello: 'world' }); // client.publish('/test', { hello: 'world' }); done(); }; })();