Add support for registrar component testing

[teles-mami]

The current implementation did not predict the possibility of an external registrar component (separate from proxy). This pull request adds the modification to the SipPhone and SipStack in order to create phones aimed at registering on this external registrar.

TELES AG uses this alteration in testing the registrar component, which is separate from the proxy. The examples on how to test the REGISTER request behavior against the registrar component for error handling and similar cases are included in the test suite.

We are open to questions and suggestions on how to differently handle REGISTER testing.

Best regards,
Mario Milas

[gsaslis]

Hi @teles-mami,

Thanks for the PR ❤️ - appreciate you taking the time to contribute this!!

Could you please take a look at our Open Source Playbook and then proceed with signing our CLA, so we can then move forward with reviewing this?

Thanks in advance!
Yorgos

[teles-mami]

Hi,

I've read the playbook and signed the CLA.

However, I'm not sure if for this project some guidelines can follow, but I've tried to be as closely compliant with them as possible. For further commits I will be opening issues to reference to. As per the playbook, should I squash the pull request?

Also, is this pull request now eligible for review?

Best regard,
Mario

[gsaslis]

Thanks a lot @teles-mami and apologies for the late reply here!

Please don't squash just yet.
@jaimecasero could you please take a look at this one ?

[jaimecasero]

PR looks ok to me. I need to check testsuite results to merge...

[gsaslis]

@jaimecasero any luck with the testsuite results here?

[teles-mami]

Hi guys!

Sorry for the late reaction.

Any news on the status of this PR?