Cannot transfer files with proxy network

[TrayBer]

When opening proxy software (such as Clash for Android) on the phone and opening the https://snapdrop.net/ page in the device's Chrome browser, the devices are able to discover each other, but cannot transfer files properly.

After testing, the same problem exists when other proxy software is turned on.

[fm-sys]

This is due to the fact, that some Proxys block WebRTC. Nothing we can do without changing the whole concept of snapdrop unfortunately...

[ghost]

@f2sky You can add the following rules：

        - DOMAIN-SUFFIX,snapdrop.net,DIRECT
        - DOMAIN,stun.l.google.com,DIRECT