Connection problem of Desktop Signal from Chinese user

[heamoe]

When I use the mobile version of Signal, the Clash proxy (a proxy software) I used can fully support my connection to the Signal app. However, I fail to connect by using Clash for Windows (desktop version of that proxy software) through same proxy address, when accessing the desktop version of Signal. The place that a connective QR code designed to be loaded is stuck and no QR code can be successfully generated, and then an error is reported

I had tried to send the error log through Signal support (strangely, I can direct to the Signal's homepage from the browser, but fail to use Signal desktop), but there is no reply after waiting for a few days.

I had also tried to change the proxy software to V2rayNG, but it did not work. Then I changed into another subscription address, and it still kept failing. Therefore, I basically ruled out the problem factors of proxy software and proxies. Then I changed my computer firewall for modifying the inbound and outbound rules, and added the Signal desktop software to allow connection to the shared network. It still did not work.

this is the error log:
https://debuglogs.org/desktop/5.43.0/27af63a679c11dcba8d7b1d60eb49c5c89ff7b087bcc4d318c2639fea0dbf7b2.gz

I followed a few guides and looked for help from the community, then I tried to change my clash mode to TUN mode (proxies global traffic) and it got a new error, first it said unable to connect to the server, I clicked after retrying, it returned to the original state.

[scottnonnenberg-signal]

Based on your log, you haven't tried any environment variables. Please see if the variables described here make things work: #1632 (comment)

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