[heroku]node socket.io client가 연결 유지 안됨

node-socket.io를 사용해서 간단한 메세지 한개를 만들었습니다.

로컬의 노드서버, mysql 에서 제 프로그램을 실행할 때는

소켓io 클라이언트(브라우저)를 한참 방치해도 연결이 끉어지지 않았는데

heroku라는 서비스를 발견해서 같은 소스를 올려 동작시켰는데 (물론 서버주소와 db주소는 바뀌었음)

클라이언트의 연결이 일정 시간 방치시 끉어지네요.

연결이 끉어질 때 브라우저 콘솔에는
Uncaught TypeError: Cannot read property 'apply' of undefined

3.Manager.emitAll @ socket.io.js:169
(anonymous function) @ socket.io.js:558
169| this.nsps[nsp].emit.apply(this.nsps[nsp], arguments);
558| self.emitAll('reconnect_attempt', self.backoff.attempts);

라고 나오네요. 아마 재접속이 안된다는 말인..거 같긴한데 잘 모르겠습니다.

그냥 클라이언트만 끉어지면 그나마 감사하겠지만 서버도 함께 멈춰줍니다 ;;

다음은 heroku logs 내용입니다.

2015-06-04T11:16:58.105477+00:00 heroku[web.1]: State changed from crashed to starting

2015-06-04T11:17:00.204512+00:00 heroku[web.1]: Starting process with command `node index.js`

2015-06-04T11:17:02.276879+00:00 app[web.1]: Recommending WEB_CONCURRENCY=1

2015-06-04T11:17:02.276856+00:00 app[web.1]: Detected 512 MB available memory, 512 MB limit per process (WEB_MEMORY)

2015-06-04T11:17:03.875109+00:00 heroku[web.1]: State changed from starting to up

2015-06-04T11:17:05.275511+00:00 heroku[router]: at=info method=GET path="/" host=rocky-basin-3981.herokuapp.com request_id=c8004c67-8e32-4c4b-8976-8831c0bee368 fwd="[본삭금 아이피 삭제]" dyno=web.1 connect=1ms service=24ms status=200 bytes=31612

2015-06-04T11:17:05.749416+00:00 heroku[router]: at=info method=GET path="/socket.io/socket.io.js" host=rocky-basin-3981.herokuapp.com request_id=01fe0a3e-5ca1-4144-a2ff-351b48290e2c fwd="[본삭금 아이피 삭제]" dyno=web.1 connect=2ms service=5ms status=304 bytes=85

2015-06-04T11:17:05.770545+00:00 heroku[router]: at=info method=GET path="/images/desktop/bg_gaussian55.jpg" host=rocky-basin-3981.herokuapp.com request_id=d60cc8f4-28b6-4a86-9aad-e8aad501b07c fwd="[본삭금 아이피 삭제]" dyno=web.1 connect=1ms service=6ms status=304 bytes=237

2015-06-04T11:17:05.763083+00:00 heroku[router]: at=info method=GET path="/images/desktop/bg_normal.jpg" host=rocky-basin-3981.herokuapp.com request_id=4eacb399-bad3-488d-8a03-42e5b2654cfd fwd="[본삭금 아이피 삭제]" dyno=web.1 connect=3ms service=9ms status=304 bytes=238

2015-06-04T11:17:05.769827+00:00 heroku[router]: at=info method=GET path="/images/taskbar/task_view.png" host=rocky-basin-3981.herokuapp.com request_id=4695edb7-82cf-48e9-8970-898dcdd38535 fwd="[본삭금 아이피 삭제]" dyno=web.1 connect=1ms service=3ms status=304 bytes=234

2015-06-04T11:17:05.768798+00:00 heroku[router]: at=info method=GET path="/images/taskbar/search.png" host=rocky-basin-3981.herokuapp.com request_id=bc035d2a-e4ff-4989-b951-6099de8670ab fwd="[본삭금 아이피 삭제]" dyno=web.1 connect=1ms service=8ms status=304 bytes=235

2015-06-04T11:17:05.775214+00:00 heroku[router]: at=info method=GET path="/images/taskbar/start_op0.png" host=rocky-basin-3981.herokuapp.com request_id=ef4af6b5-268d-4915-b29d-780e2f550d87 fwd="[본삭금 아이피 삭제]" dyno=web.1 connect=5ms service=9ms status=304 bytes=234

2015-06-04T11:17:06.058822+00:00 heroku[router]: at=info method=GET path="/socket.io/?EIO=3&transport=polling&t=1433416627819-0" host=rocky-basin-3981.herokuapp.com request_id=6f02b705-1ffb-4925-82b6-579d37109c44 fwd="[본삭금 아이피 삭제]" dyno=web.1 connect=2ms service=21ms status=200 bytes=306

2015-06-04T11:17:06.331742+00:00 heroku[router]: at=info method=GET path="/socket.io/?EIO=3&transport=polling&t=1433416628106-1&sid=t6d_42nqQnVZsWpLAAAA" host=rocky-basin-3981.herokuapp.com request_id=2c81b77e-20fe-4908-a697-3c37be9bfd0b fwd="[본삭금 아이피 삭제]" dyno=web.1 connect=1ms service=5ms status=200 bytes=208

2015-06-04T11:17:06.754888+00:00 heroku[router]: at=info method=POST path="/socket.io/?EIO=3&transport=polling&t=1433416628515-3&sid=t6d_42nqQnVZsWpLAAAA" host=rocky-basin-3981.herokuapp.com request_id=37a3312d-40c7-49a9-8b6e-015f66f29f38 fwd="[본삭금 아이피 삭제]" dyno=web.1 connect=1ms service=17ms status=200 bytes=267

2015-06-04T11:17:06.757564+00:00 heroku[router]: at=info method=GET path="/socket.io/?EIO=3&transport=polling&t=1433416628381-2&sid=t6d_42nqQnVZsWpLAAAA" host=rocky-basin-3981.herokuapp.com request_id=1a5da7c1-4cf4-4053-8c2e-4fee8848fbd1 fwd="[본삭금 아이피 삭제]" dyno=web.1 connect=2ms service=156ms status=200 bytes=402

2015-06-04T11:17:06.757954+00:00 app[web.1]: user - t6d_42nqQnVZsWpLAAAA / open app - 헹의에슐가 롑흔리나 : 네이버 블로그

2015-06-04T11:17:07.125780+00:00 heroku[router]: at=info method=GET path="/socket.io/?EIO=3&transport=polling&t=1433416628813-4&sid=t6d_42nqQnVZsWpLAAAA" host=rocky-basin-3981.herokuapp.com request_id=8019942e-33e0-4df4-8ae6-919a644d8ace fwd="[본삭금 아이피 삭제]" dyno=web.1 connect=6ms service=84ms status=200 bytes=207

2015-06-04T11:17:07.069991+00:00 heroku[router]: at=info method=GET path="/images/window/xblack2.png" host=rocky-basin-3981.herokuapp.com request_id=538292b3-3802-4e43-b393-094e7abf2038 fwd="[본삭금 아이피 삭제]" dyno=web.1 connect=4ms service=26ms status=304 bytes=234

2015-06-04T11:17:08.752922+00:00 heroku[router]: at=info method=GET path="/images/window/xwhite.png" host=rocky-basin-3981.herokuapp.com request_id=9c207387-4017-40d4-9a99-51596767def6 fwd="[본삭금 아이피 삭제]" dyno=web.1 connect=2ms service=10ms status=304 bytes=234

2015-06-04T11:17:22.532481+00:00 heroku[router]: at=info method=GET path="/images/taskbar/task_view_hover.png" host=rocky-basin-3981.herokuapp.com request_id=66eff144-0362-4301-a17f-9434ba4ce43c fwd="[본삭금 아이피 삭제]" dyno=web.1 connect=1ms service=13ms status=200 bytes=383

2015-06-04T11:17:28.739395+00:00 heroku[router]: at=info method=GET path="/images/taskbar/start_op0_hover.png" host=rocky-basin-3981.herokuapp.com request_id=9814ab85-4c60-43e9-90fd-d48e7cf753fb fwd="[본삭금 아이피 삭제]" dyno=web.1 connect=1ms service=13ms status=200 bytes=694

2015-06-04T11:18:13.388740+00:00 app[web.1]: events.js:85

2015-06-04T11:18:13.388746+00:00 app[web.1]: throw er; // Unhandled 'error' event

2015-06-04T11:18:13.388748+00:00 app[web.1]: ^

2015-06-04T11:18:13.388750+00:00 app[web.1]: Error: Connection lost: The server closed the connection.

2015-06-04T11:18:13.388752+00:00 app[web.1]: at Protocol.end (/app/node_modules/mysql/lib/protocol/Protocol.js:103:13)

2015-06-04T11:18:13.388754+00:00 app[web.1]: at Socket.emit (events.js:129:20)

2015-06-04T11:18:13.388753+00:00 app[web.1]: at Socket.<anonymous> (/app/node_modules/mysql/lib/Connection.js:102:28)

2015-06-04T11:18:13.388756+00:00 app[web.1]: at _stream_readable.js:908:16

2015-06-04T11:18:13.388758+00:00 app[web.1]: at process._tickCallback (node.js:355:11)

2015-06-04T11:18:13.402278+00:00 heroku[router]: at=info method=GET path="/socket.io/?EIO=3&transport=websocket&sid=t6d_42nqQnVZsWpLAAAA" host=rocky-basin-3981.herokuapp.com request_id=0a6e07f1-156d-477e-a22a-4e8b23905798 fwd="[본삭금 아이피 삭제]" dyno=web.1 connect=4ms service=66624ms status=101 bytes=129

2015-06-04T11:18:14.328647+00:00 heroku[web.1]: Process exited with status 1

2015-06-04T11:18:16.854123+00:00 heroku[web.1]: Starting process with command `node index.js`

2015-06-04T11:18:14.348078+00:00 heroku[web.1]: State changed from up to crashed

2015-06-04T11:18:14.348968+00:00 heroku[web.1]: State changed from crashed to starting

2015-06-04T11:18:18.844058+00:00 app[web.1]: Detected 512 MB available memory, 512 MB limit per process (WEB_MEMORY)

2015-06-04T11:18:18.844077+00:00 app[web.1]: Recommending WEB_CONCURRENCY=1

2015-06-04T11:18:20.561713+00:00 heroku[web.1]: State changed from starting to up

2015-06-04T11:19:12.951849+00:00 app[web.1]: throw er; // Unhandled 'error' event

2015-06-04T11:19:12.951843+00:00 app[web.1]: events.js:85

2015-06-04T11:19:12.951854+00:00 app[web.1]: at Protocol.end (/app/node_modules/mysql/lib/protocol/Protocol.js:103:13)

2015-06-04T11:19:12.951851+00:00 app[web.1]: ^

2015-06-04T11:19:12.951852+00:00 app[web.1]: Error: Connection lost: The server closed the connection.

2015-06-04T11:19:12.951856+00:00 app[web.1]: at Socket.<anonymous> (/app/node_modules/mysql/lib/Connection.js:102:28)

2015-06-04T11:19:12.951857+00:00 app[web.1]: at Socket.emit (events.js:129:20)

2015-06-04T11:19:12.951858+00:00 app[web.1]: at _stream_readable.js:908:16

2015-06-04T11:19:12.951860+00:00 app[web.1]: at process._tickCallback (node.js:355:11)

2015-06-04T11:19:13.812421+00:00 heroku[web.1]: State changed from up to crashed

2015-06-04T11:19:13.796931+00:00 heroku[web.1]: Process exited with status 1

2015-06-04T11:20:51.595972+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=rocky-basin-3981.herokuapp.com request_id=fea65ef4-034f-4f4f-8fd4-23b7e9dbe7b7 fwd="[본삭금 아이피 삭제]"

dyno= connect= service= status=503 bytes=

별거 하는 일 없는 서버코드

---------------------------

var S_PORT = process.env.PORT || 5000;

var mysql = require('mysql'),

express = require('express'),

app = express(),

server = require('http').createServer(app);

app.use(express.static(__dirname + '/public'));

var io = require('socket.io').listen(server);

var db = mysql.createConnection({

host: process.env.DB_HOST,

port: 3306,

user: process.env.DB_USER,

database: process.env.DB_NAME,

password: process.env.DB_PASSWORD

});

db.connect(function(err){

if (err) console.log(err)

});

server.listen(S_PORT);

app.get('/', function (req, res) {

res.sendFile(__dirname + '/index.html');

});

var findApp = function(data, callback){

var query = db.query('select * from appList where app_id = '+mysql.escape(data) ,function(err,rows){

callback(rows);

});

}

io.sockets.on('connection', function(socket){

socket.on('open app', function(data) {

findApp(data, function(row){

socket.emit('open window',row);

console.log('user -',socket.id ,'/ open app -',row[0].app_name);

});

클라이언트 socket.io 부분 코드

-----------------------------

var socket = io('https://rocky-basin-3981.herokuapp.com/');

var send = document.getElementById("new-window");

send.addEventListener('click', function(){

socket.emit('open app', '2');

});

socket.on('open window',function(data) {

createWindow(data);

});

node도 처음 heroku도 처음이라서 어디서 디버그 해야 할 지 혼란스럽네요.

로컬에선 잘 돌아갔는데 차이라면 https? 왜 소켓연결이 끉어지고 서버가 죽을까요...

3.Manager.emitAll	@	socket.io.js:169
(anonymous function)	@	socket.io.js:558