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Re: [Question #229419]: What protocol number should be for RTP header compression

To: rohc@xxxxxxxxxxxxxxxxxxx
From: Didier Barvaux <question229419@xxxxxxxxxxxxxxxxxxxxx>
Date: Tue, 28 May 2013 19:26:22 -0000
Reply-to: question229419@xxxxxxxxxxxxxxxxxxxxx
Sender: bounces@xxxxxxxxxxxxx

Question #229419 on rohc changed:
https://answers.launchpad.net/rohc/+question/229419

    Status: Open => Needs information

Didier Barvaux requested more information:
> "rtp_decide_state" shows in the 2nd, 3rd, and 4th packets. I just
> copied and pasted the log of the 2nd packet.

Please send me the traces for the 3rd, 4th and 5th packets.

> Another question is, in the result from the decompression, the
> checksum bytes are different from the original. Is this expected?

It should not in normal cases. Maybe the checksums are wrong in the
source packets. The ROHC library does not check them before compression
and it does not transmit the checksums to the decompressor: the
decompressor computes them on its own. So, if there are wrong at source,
they may be different in the decompressed packets.

Regards,
Didier

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