Hi Chris,
The problem is with UAC2 - it generates the 487 reply (frame 11)
completely bogus :
- there is one VIA (of .122) missing; the INVITE 487 received had 2
VIA hdrs, any reply to that INVITE must have also 2 VIA hdrs
- TO tag is missing (as you noticed) - any final reply must have one !
OpenSIPS is doing nothing wrong - it is removing his own VIA from 487 reply.
Regards,
Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
http://www.opensips-solutions.com
On 24.06.2014 20:19, Chris Maciejewski wrote:
Hi,
I have a strange problem with OpenSIPS 1.11.1 removing Via header and
routing 487 response with no Via header (which is than dropped by UA1
as invalid SIP packet - missing Via).
You can see the call flow below:
https://dl.dropboxusercontent.com/u/3182365/call-cancel/call2_index.html
I think the problem is related to the fact UA2 is incorrectly not
adding To tag to F10 and F11. Since OK 200 in F10 is final response,
To tag should be present?
Any suggestions how to fix this issue and make Proxy not remove Via
header very much appreciated.
Best regards,
Chris
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