Enable transaction matching using callid and cseq values
instead of via md5 value.

Pre-Submission Checklist

Commit message has the format required by CONTRIBUTING guide
Commits are split per component (core, individual modules, libs, utils, ...)
Each component has a single commit (if not, squash them into one commit)
No commits to README files for modules (changes must be done to docbook files
in doc/ subfolder, the README file is autogenerated)

Type Of Change

Small bug fix (non-breaking change which fixes an issue)
New feature (non-breaking change which adds new functionality)
Breaking change (fix or feature that would change existing functionality)

Checklist:

PR should be backported to stable branches
Tested changes locally
Related to issue #XXXX (replace XXXX with an open issue number)

Description

Hello,

We had an issue with kamailio that the generated tm p_cell->md5 was not sent out in Via "branch=" parameter. Instead, other value was sent. Thus when comparing the replies Via "branch=" md5 value back to p_cell->md5, the transactions mismatched and dialogs were not setup. This happened for the most of the transactions/dialogs.

We could not really figure out why the above was happening. Because this was an isolated system, we decided to do this workaround using callid and cseq matching for transactions, and it helped. Now most of the dialogs are setup.

Let me know what you think, if other had this problem and if this PR helps.

Thank you,
Stefan

You can view, comment on, or merge this pull request online at:

https://github.com/kamailio/kamailio/pull/2868

Commit Summary

tm: Add callid_cseq_matching param

File Changes

Patch Links:

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