decoder state leakage across multiple messages

[jmestwa-coder]

Summary

Fix state leakage in SIP decoder where clen and full_msg_len were not reset between iterations in Decoder::reassemble().

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Problem

When multiple SIP messages are present in a single buffer:

• Values from the previous message are reused
• Subsequent messages may not be processed

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Fix

Move clen and full_msg_len inside the loop so they are reinitialized per message.

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Test

Adds a regression test that:

• Sends two SIP messages in one buffer
• Verifies both are processed (newDecoderEventHandler called twice)

The test fails before the fix and passes after.

[repokitteh-read-only]

Hi @jmestwa-coder, welcome and thank you for your contribution.

We will try to review your Pull Request as quickly as possible.

In the meantime, please take a look at the contribution guidelines if you have not done so already.

🐱

Caused by: #44860 was opened by jmestwa-coder.

see: more, trace.

[zuercher]

You'll need to fix the DCO before this will be accepted. See CONTRIBUTING.md for instructions.

[zuercher]

/wait

[jmestwa-coder]

Added DCO sign-off and updated the commit. Please let me know if anything else is needed.

[kyessenov]

/wait
@durd07 please review as the code owner