econ socket is not closed on SIGTERM and SIGINT

[bretonium]

When i stop infclass process via SIGINT (in my case i just press Ctrl-C) or SIGTERM (via kill <pid>) econ socket is not getting closed. Because of it, i cannot restart the server immediately and have to wait for 60 seconds.

Steps to reproduce:

1. Set up the server with econ enabled

# binding to 0.0.0.0 is dangerous, but whatever
ec_bindaddr 0.0.0.0
ec_port 8309
ec_password <password>
ec_output_level 2

2. Run the server and verify that econ works: (for example, using telnet <ip> 8309, you will see password prompt)
3. Shutdown the server by pressing Ctrl-C
4. Start the server again and try connecting to the econ

Expected: connection to econ succeeds
Observed: connection fails; in server log there is message about the server not being able to open a socket

[ResamVi]

I think that this is outside the scope of infclass. Maybe the offical teeworlds repo can get answers?

[bretonium]

We maintain a full disconnected copy of teeworlds code and haven't updated it in many years. Our code is different from theirs right now. Even if it should/was/is being fixed in the teeworlds repo, the fix still needs to be backported to our code manually.

Also, TIL that SIGTERM is not the signal that is sent upon ^C. The signal sent upon ^C is SIGINT. Another thing i learned about is SO_REUSEADDR/SO_REUSEPORT, which is probably what we need. As far as i understand, it should be set somewhere in src/base/system.c before bind(), for example in

teeworlds-infclassR/src/base/system.c

Line 914 in e0eca10

[duralakun]

i dont know much about this, but maybe this helps:
teeworlds/teeworlds#804

[bretonium]

We have this patch applied, it still does not help

[bretonium]

Why does this bug have label "wontfix"?

[teoman002]

Because no one is able to fix it!
Maybe we need another label for that.