I am having some issues with intermittent packet duplication in the network.
what this looks like currently is opensips gets 2 identical Invite packets. opensips processes them returning 2 401's with 2 different nonce values. opensips then gets 2 Authed Invite packets processes the first one and invalidates the nonce. another thread is simultaneously processing the other one and sees the invalid nonce and returns a 401. the first thread forwards the valid invite and 100's to the A party and eventual returns a 180 but the A party ignores this because it got a terminal response (401) for that invite. I was wondering is there a mechanism do identify duplicate CSeq numbers in a session so we can drop them in opensips? Yes I am trying to get the source of the duplication identified but it is currently breaking authentication and call setup. Kevin Kevin Stewart | Senior VOIP Network Engineer D: +64 9 919 6120E: [email protected] M: +64 21 879 057W: vocusgroup.co.nz A: Level 4, 191 Queen Street, Auckland 1010
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