this post was submitted on 28 Sep 2025
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WebSocketPeer doesn't works when I'm trying to export the game for WebGL. (programming.dev)
submitted 5 months ago by xolatgames@programming.dev to c/godot@programming.dev
7 comments fedilink hide all child comments
 

Hi, folks! ✌️ How are you? 👋

I'm working on the game that uses WebSocketPeer for multiplaying.

And when I runs the game, WebSocketPeer works as well. Also when I exports the game for Desktop platforms, then launches this, WebSocketPeer works also.

The problems happens when I exports the game for WebGL:

  1. I export the game for WebGL, compress this to a zip archive, then send this archive to the VPS server.

  2. Connect to this VPS server and unzip archive.

From a browser the game works very well, except connection through WebSocketPeer.

For running this game on a browser, I'm using NGINX as a HTTP server.

This game connect to the game server (that developed separately), that also located on the same machine, and also uses WebSocketPeer.

I have try to point the IP address of the VPS server in the configs of the game, and it doesn't works. Also doesn't works to point "127.0.0.1" in the configs of this game.

Folks, where's the problem may be? And what do I do wrong now? 😟

Thanks in advance.

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[–] xolatgames@programming.dev 1 points 5 months ago

This is a piece of logs from the browser console:

Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at http://127.0.0.1:777/abilities/active/all. (Reason: CORS request did not succeed). Status code: (null).
TypeError: NetworkError when attempting to fetch resource. game.js:474:18
Firefox can’t establish a connection to the server at ws://127.0.0.1:888/. game.js:9:219740
SCRIPT ERROR: Assertion failed. game.js:474:18
   at: HttpHighClient.send_request (res://scripts/common/http/http_high_client.gd:37) game.js:474:18
ERROR: Parse JSON failed. Error at line 0: Unknown error getting token game.js:474:18
   at: parse_string (core/io/json.cpp:582) game.js:474:18
�[91m�[1mERROR: �[22mDB API can't read this response: /abilities/active/all�[39m�[0m game.js:459:16

Firewall I've already checked.

[–] xolatgames@programming.dev 1 points 5 months ago

I changed the IP address from "127.0.0.1" for connection to the server in the configs of the game to the IP adress of the VPS. And in this case the logs from the browser console looks so now:

Blocked loading mixed active content “http://218.14.40.150:777/abilities/active/all%E2%80%9D game.js:9:186044
TypeError: NetworkError when attempting to fetch resource.
    create https://example.com/game.js:9
    _godot_js_fetch_create https://example.com/game.js:9
    callUserCallback https://example.com/game.js:9
    runIter https://example.com/game.js:9
    Browser_mainLoop_runner https://example.com/game.js:9
game.js:474:18
SCRIPT ERROR: Assertion failed. game.js:474:18
   at: HttpHighClient.send_request (res://scripts/common/http/http_high_client.gd:37) game.js:474:18
ERROR: Parse JSON failed. Error at line 0: Unknown error getting token game.js:474:18
   at: parse_string (core/io/json.cpp:582) game.js:474:18
�[91m�[1mERROR: �[22mDB API can't read this response: /abilities/active/all�[39m�[0m game.js:459:16
ERROR: DB API can't read this response: /abilities/active/all game.js:474:18
   at: push_error (core/variant/variant_utility.cpp:1098) game.js:474:18

But the connection still won't works 🤷‍♂️

P.S: Some content from the logs was changed for privacy reason.

[–] nobody_special@lemmy.ml 1 points 4 months ago (2 children)

I don't have experience with web sockets in godot but I do have experience in web development

I assume it's because you are hosting the game from somewhere other than where you are trying to connect.

A look at this article should help. https://developer.mozilla.org/en-US/docs/Web/HTTP/Guides/CORS#examples_of_access_control_scenarios

You'll need to send some extra headers that will allow the browser to connect to it.

I think this one? https://developer.mozilla.org/en-US/docs/Web/HTTP/Guides/CORS#access-control-allow-origin

I only ever set it to * and forgot about it when I have done API development.

I hope this is helpful!

[–] xolatgames@programming.dev 1 points 4 months ago (1 children)

Now the game awaits pending, but then shows "CONNECTION_TIMEOUT".

[–] nobody_special@lemmy.ml 1 points 3 months ago* (last edited 3 months ago) (1 children)

I think it might be helpful to understand the flow from a high level to help you further. Because right now I'm bit confused on the ordering / actors involved and what the difference between what is supposed to happen and what is happening.

Doesn't have to be a great diagram. Something shitty like this diagram below.

[–] xolatgames@programming.dev 1 points 3 months ago

Don't pay attentions on the quality, the meaning is important here. It's a normal diagram.

And, yeap! The game's webserver (nginx) locates in the same VPS where locates the game's APIs. So, a browser loads the game's client (WebGL version of the game) from the same place, where in the next step, after loading has finished, this browser will connects to that place for connection to the game's APIs.

[–] xolatgames@programming.dev 1 points 4 months ago

Thanks to you, @nobody_special 🤝

But I already guessed where's the problem was be.

https://developer.mozilla.org/en-US/docs/Web/Security/Mixed_content

If it said shortly, I needed to add to the IP address for a connection (for example 192.168.0.150), one of the name of the secure protocols (wss://, https://, etc.) (result: wss://192.168.0.150/)

So, I think that I'm in one step closer to the solution.

Now the developer consoles seems somehow like that:

But the game still doesn't works.

Thanks for your help, again 🤝