setting endpoint_add_udp twice with the same value is crashing FXServer

[manzarek123]

Of course you should not do that but maybe a few additional checks could prevent some users to accidentally crash their server

Repro:

In server.cfg

endpoint_add_tcp "0.0.0.0:30120"
endpoint_add_udp "0.0.0.0:30120"

Then when the server is running type:
endpoint_add_udp "0.0.0.0:30120"

Result:
cfx> endpoint_add_udp "0.0.0.0:30120"
[ citizen-server-impl] Error: Could not bind on 0.0.0.0:30120 - is this address valid and not already in use?
[ citizen-server-impl]
[ server] Error: Loop svMain seems hung! (last checkin 45 seconds ago)
[ server] Warning: svMain watchdog stack: root
[ server] Uploaded a live hang dump to the CitizenFX crash reporting service. The report ID is b89de889-fd37-43e8-b52f-ca114c2b8b27.

[blattersturm]

That's.. odd. The error itself should close, not 'hang'.

Is there a Windows dialog box you're forgetting to dismiss?

[manzarek123]

Is there a Windows dialog box you're forgetting to dismiss?

Ooops yes my bad there is one in the background and it is closing the process indeed.
So there is no crash in the end... Feel free to close this issue or leave it open if closing the server is not a desired behavior.

[gottfriedleibniz]

Given how many "is this address valid and not already in use" posts there are on the forum and discords, an issue like this should maybe placed in a FAQ somewhere(?).