Error 400 - Websocket + Nginx Proxy

[CreativeWolf]

When Strophe accesses ejabberd through websocket directly ws://chat.test:5280/ws I'm able to connect to the server

However, while using http://chat.test/ws I'm getting 400 Bad Request

When connected to the through websocket directly ws://chat.test:5280/ws using Strophe - This is what I see in the log file

2018-12-24 01:10:31.618 [debug] <0.16549.0>@ejabberd_http:init:147 S: [{[<<"ws">>],ejabberd_http_ws},{[<<"bosh">>],mod_bosh},{[<<"api">>],mod_http_api},{[<<"admin">>],ejabberd_web_admin},{[<<"http-bind">>],mod_bosh}]
2018-12-24 01:10:31.618 [debug] <0.16549.0>@ejabberd_http:process_header:305 (#Port<0.19959>) http query: 'GET' <<"/ws">>
2018-12-24 01:10:31.619 [debug] <0.16549.0>@ejabberd_http:process:392 [<<"ws">>] matches [<<"ws">>]
2018-12-24 01:10:31.619 [debug] <0.16550.0>@ejabberd_http_ws:init:146 Client connected through websocket {http_ws,<0.16550.0>,{{0,0,0,0,0,65535,2790,43534},54222}}

I see the request coming in as a GET request

However while using nginx proxy http://chat.test/ws

2018-12-24 01:11:05.622 [debug] <0.16554.0>@ejabberd_http:init:147 S: [{[<<"ws">>],ejabberd_http_ws},{[<<"bosh">>],mod_bosh},{[<<"api">>],mod_http_api},{[<<"admin">>],ejabberd_web_admin},{[<<"http-bind">>],mod_bosh}]
2018-12-24 01:11:05.622 [debug] <0.16554.0>@ejabberd_http:process_header:305 (#Port<0.19961>) http query: 'POST' <<"/ws">>
2018-12-24 01:11:05.623 [debug] <0.16554.0>@ejabberd_http:process:392 [<<"ws">>] matches [<<"ws">>]

I see the request coming in as a POST request

Here's my Nginx Config

location /ws {
    proxy_pass http://127.0.0.1:5280/ws;
    proxy_http_version 1.1;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header Host $host;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection "upgrade";
}

Upon reading through the code, I see that only when the protocol is ws or wss it is handled as websocket and if it is http or https it is handled as BOSH.

Appreciate any help please.

Thanks!

[CreativeWolf]

Adding this line to establish the connection solved the problem:

Chat.connection = new Strophe.Connection("ws://chat.test/ws/");

Thanks to @prefiks

SRC: processone/ejabberd#2732