Socket.io response code 200 instead 101

[YegorMedvedev]

Hi!

When I try to use socket.io and Express with IISnode is have a problem, websocket connection return status 200 instead 101.

Socket.io version: 1.4.5 IIS node: 0.2.21

server code:

var express = require('express');
var app = express();
const port = process.env.PORT || 8080;

// socket.io ver 1.4.5
var server = require('http').Server(app);
var io = require('socket.io', {path: '/api/socket.io'})(server);

server.listen(port);

io.on('connection', function (socket) {
    socket.emit('test', { hello: 'world' });
});

app code (angular 2):

var address = 'http://xxx.xxx.xxx.xxx:8080/'; // ip address
var socket = io.connect(address, {transports: ['websocket'], path: '/api/socket.io'});    
socket.on('test', (data) => {
    console.log(data, '<-- socket data');
})

web.config

<configuration>
    <system.webServer>
        <handlers>
            <add name="iisnode" path="index.js" verb="*" modules="iisnode" />
            <!-- <add name="iisnode-socket.io" path="index.js" verb="*" modules="iisnode" /> -->
        </handlers>

        <rewrite>
            <rules>
                <rule name="LogFile" patternSyntax="ECMAScript">
                    <match url="socket.io"/>
                    <action type="Rewrite" url="index.js"/>
                </rule>
                <rule name="api">
                    <match url="/*"/>
                    <action type="Rewrite" url="index.js"/>
                </rule>
            </rules>
        </rewrite>

        <iisnode
            devErrorsEnabled="true"/>
        <webSocket enabled="false" />
    </system.webServer>
</configuration>

And, then I run this app as static on same server I've got 200 status of response and this error in console: WebSocket connection to 'ws://xxx.xxx.xxx.xxx:8080/api/socket.io/?EIO=3&transport=websocket' failed: Error during WebSocket handshake: Unexpected response code: 200

What I do wrong?

[ymospan]

Hi Tomek/Carl, Having the same issue with the new version of socket.io (1.4.6). Did you make it finally working? If yes, can you share your solution?

Thanks, Yuri.

[alihalabyah]

Guys,

Same issue here even with the 1.5.x

Any updates?

[laptou]

I'm also having the same problem...

[jjmmontemayor]

I am using socket.io 2.0.2 and iisnode 0.2.21 and also having the same problem. Has anyone made this work?

[gusarov]

same here 2.0.3 but when downgrades to 1.3.5 everything fine. Interesting thing noticed: when upgrades back to 2.0.3 it still works fine. I have confirmed this several times even on prod sever.

[joetidee]

Same issue here on v4.3.1. I am using ELB on AWS and am wondering if it is not relaying properly (?)