[OpenSIPS-Users] The contact value related issue

Anton Danilov littlesmilingcloud at gmail.com
Wed Apr 19 12:28:50 UTC 2023

Hello, everyone.

I've faced a strange issue: incorrect port number in the contact
header of 200 Ok reply causes ACK loss and dialog termination.

Here is the UML diagram in svg format (also in the attach):

I've tried to fix this with the fix_nated_contact() function in the
on_reply route, but it seems like it doesn't work - the port number is
still unchanged.

Is there a way to fix it without manual manipulation with regular expressions?

Anton Danilov.
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