[GH-ISSUE #1243] Proxyman messes with some Websocket connections in Firefox #1239

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opened 2026-03-03 19:49:37 +03:00 by kerem · 3 comments

kerem commented

2026-03-03 19:49:37 +03:00

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Originally created by @tkrajacic on GitHub (May 21, 2022).
Original GitHub issue: https://github.com/ProxymanApp/Proxyman/issues/1243

Originally assigned to: @NghiaTranUIT on GitHub.

Proxyman version? (Ex. Proxyman 1.4.3)

Version 3.5.0 (30500)

macOS Version? (Ex. mac 10.14)

12.4 (21F79)

Steps to reproduce

Go to https://livevoice.io/en/streams?code=858776&lobby=true , open the web console, and try to start streaming. When Proxyman is running, you will see an error. I have installed and verified the Proxyman certificate in Firefox, and everything else works fine.

Firefox can’t establish a connection to the server at wss://livevoice.io/cable

As soon as you quit proxyman, everything works as intended.

Expected behavior

Same as Safari, everything should work. It's only in Firefox.

Screenshots (optional)

Originally created by @tkrajacic on GitHub (May 21, 2022). Original GitHub issue: https://github.com/ProxymanApp/Proxyman/issues/1243 Originally assigned to: @NghiaTranUIT on GitHub. ### Proxyman version? (Ex. Proxyman 1.4.3) Version 3.5.0 (30500) ### macOS Version? (Ex. mac 10.14) 12.4 (21F79) ### Steps to reproduce Go to https://livevoice.io/en/streams?code=858776&lobby=true , open the web console, and try to start streaming. When Proxyman is running, you will see an error. I have installed and verified the Proxyman certificate in Firefox, and everything else works fine. ``` Firefox can’t establish a connection to the server at wss://livevoice.io/cable ``` As soon as you quit proxyman, everything works as intended. ### Expected behavior Same as Safari, everything should work. It's only in Firefox. ### Screenshots (optional) <img width="917" alt="image" src="https://user-images.githubusercontent.com/873717/169635808-43b58230-f5bd-4ae8-ab4e-de8213da1e1e.png">

kerem added the

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2026-03-03 19:49:37 +03:00

kerem commented

2026-03-03 19:49:37 +03:00

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@NghiaTranUIT commented on GitHub (May 23, 2022):

Thanks for the detailed reproducible steps. I will check out later this week 👍

@NghiaTranUIT commented on GitHub (May 23, 2022): Thanks for the detailed reproducible steps. I will check out later this week 👍

kerem commented

2026-03-03 19:49:37 +03:00

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@NghiaTranUIT commented on GitHub (May 27, 2022):

Unfortunately, I tried but could not find any reliable solution. It seems Firefox has a different WS messages format and it triggers the bug : /

I will keep an eye on this issue and soon find the solution 👍

@NghiaTranUIT commented on GitHub (May 27, 2022): Unfortunately, I tried but could not find any reliable solution. It seems Firefox has a different WS messages format and it triggers the bug : / I will keep an eye on this issue and soon find the solution 👍

kerem commented

2026-03-03 19:49:38 +03:00

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@tkrajacic commented on GitHub (May 27, 2022):

Thanks for checking it out. It's a great first step already that you can reproduce it!

@tkrajacic commented on GitHub (May 27, 2022): Thanks for checking it out. It's a great first step already that you can reproduce it!