[lwip-devel] [patch #9648] Correct UDP rebind check

[Matthias Hofmann]

Follow-up Comment #2, patch #9648 (project lwip):

My expectation is currently that you cannot bind to a port that is already
bound.
As IP_ADDR_ANY bind the port to all available interfaces. You cannot bind such
a port again with for example 192.168.0.1 address.

I wrote a little test program for checking this behaviour and with it a rebind
of an occupied port is not possible.
When you use the test program, you have to make sure that the HOST_IP matches
your PC IP address.

By the way this is also the behaviour of lwIP for TCP ;)

(file #44363)
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Additional Item Attachment:

File name: bind.c                         Size:0 KB


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