I believe that SIP messages are terminated by 2 line-ends, whereas SIP
messages carrying one or more message bodies indicate the length of their
attached cargo by means of the Content-Length header.

These facts are adequate for receive logic to determine the end of a
message.

Matt

-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of Rocky Wang
Sent: 06 February 2006 07:05
To: 'SIP Implementors'
Subject: [Sip-implementors] SIP over TCP implementation


Hi,
    I have one question with respect to SIP over TCP implementation.
Because the TCP connectsion provides stream service, after gets some
bytes from the stream, how a SIP node knows when a SIP messages is
finished receiving, or more fragments are still in the data stream?
    The receiver must try to do the decode the received fragments as
supposing the SIP message is completed. If decoding failed, then wait
for more bytes from the stream and do a next decoding again. If the
receiver must do the docode again and again, it will cost a lot of CPU
time slot, I think. Do you have any good idea to improve or resolve the
problem.

Best Regards,
Rocky Wang


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