Server process crashes after a few seconds

[Soberia]

I am currently testing the app during internet shutdown in Iran. The tunnel connects on public DNS providers like Google and Cloudflare but i was not being able to test the connection due to server process keeps crashing after few mere seconds. There’s no meaningful log output, which makes it difficult to understand what’s causing the crash.

Here's what i get when running the server process:

root@test:/home/soberia/slipstream# ./slipstream -l 53 -a 127.0.0.1:2000 -d m.domain.ir
File descriptor 8 was closed
File descriptor 11 was closed
File descriptor 20 was closed
File descriptor 23 was closed
File descriptor 28 was closed
send failed: Connection reset by peer

The client does not crash. Tested with both released versions, same results.

Also, DNSTT works but currently the connection drop after few seconds after initiating the connection, It was working reliably in previous days, so something may have changed in the network environment.

Also, app was terminated without any output when couldn't listen on port 53 due to interfering with host local DNS resolvers. So, adding an option to bind to a specific IP address could be helpful.