node.js - Raising a socket.io event from a Restify handler -

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i have resitfy server , socketio server configured per example here. requirement raise socket.io event within handler. so, code looks this:

var restify = require('restify'); var socketio = require('socket.io');  var server = restify.createserver();  server.get('/', function (req, res, next) {   res.json(204, null);   io.emit("sample", {"sample":"event"});   next(); });  server.listen(8080, function () {     console.log('socket.io server listening @ %s', server.url); });

my client code pretty simple , looks this:

<!doctype html> <html lang="en"> <head>   <meta charset="utf-8">   <title>socket.io chat example</title> </head> <body>   <script src="socket.io.js"></script>   <script type="text/javascript">     var socket = io.connect('http://localhost:8080');     socket.on('sample', function (data) {       console.dir(data);     });   </script> </body> </html>

when start server, server exists after first time client connects , found in logs:

  socket.io:server initializing namespace / +0ms   socket.io:server creating engine.io instance opts {"path":"/socket.io"} +3ms   socket.io:server attaching client serving req handler +1ms socket.io server listening @ http://0.0.0.0:8080   socket.io:server incoming connection id u9hlzrlbsgfvi8qpaaaa +2s   socket.io:client connecting namespace / +4ms   socket.io:namespace adding socket nsp / +0ms  http.js:690     throw new error('can\'t set headers after sent.');           ^ error: can't set headers after sent.     @ serverresponse.outgoingmessage.setheader (http.js:690:11)     @ serverresponse.format (/home/vagrant/socket.io-server-example/node_modules/restify/lib/response.js:109:10)     @ serverresponse.send (/home/vagrant/socket.io-server-example/node_modules/restify/lib/response.js:231:24)     @ emitrouteerror (/home/vagrant/socket.io-server-example/node_modules/restify/lib/server.js:152:13)     @ onroute (/home/vagrant/socket.io-server-example/node_modules/restify/lib/server.js:610:21)     @ router.find (/home/vagrant/socket.io-server-example/node_modules/restify/lib/router.js:512:5)     @ server._route (/home/vagrant/socket.io-server-example/node_modules/restify/lib/server.js:604:21)     @ routeandrun (/home/vagrant/socket.io-server-example/node_modules/restify/lib/server.js:572:14)     @ server._handle (/home/vagrant/socket.io-server-example/node_modules/restify/lib/server.js:592:9)     @ server.onrequest (/home/vagrant/socket.io-server-example/node_modules/restify/lib/server.js:255:14)

what not able understand is, how can serve rest api , socket.io events same port using restify? why restify complain not being able set headers once sent?

am missing fundamental here?

try using using example

pass result listen method socketio , use io instance send events on handlers.

var restify = require('restify');  var server = restify.createserver();  var app = server.listen(8080, function() {   console.log('%s listening @ %s', server.name, server.url); });  var io = require("socket.io")(app);  function respond(req, res, next) {   res.send('hello ' + req.params.name);    io.emit('sample',{"data":"hello server."});    next(); }  server.get('/hello/:name', respond); server.head('/hello/:name', respond);  io.on('connection', function(socket){     console.log('new connection'); });

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