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#602 SIP UA can't receive 500(Internal Server Error)

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nobody
None
5
2010-06-21
2010-06-21
xhu xhu
No

SIP UA can't receive 500(Internal Server Error) after sending the REGISTER request with the equal CSeq header
field value to the last value of CSeq or lower than the number. The details can be seen as follows:
1 Test topology:
NUT(REG && PX) UA11 UA12 DNS
| | | |
IP : 3ffe:501:ffff:50::50 3ffe:501:ffff:1::1 3ffe:501:ffff:2::2 3ffe:501:ffff:4::1
aor-uri : ss.under.test.com UA11@under.test.com UA12@under.test.com
contact-uri : UA11@node.under.test.com UA12@node11.under.test.com

2 tcpdump file can be seen in "SIP Registrar- REGISTER request with the equal CSeq value to or lower than the last value of CSeq" attachment
3 openser configuration file can be seen in "openser.cfg" attachment

Discussion

  • xhu xhu
    xhu xhu
    2010-06-21

    openser configuration file

     
    Attachments
  • Klaus Darilion
    Klaus Darilion
    2010-06-21

    As far as I know there are some CSeq checks. But I think there is a short time intervall were the same CSeq is allowed to handle retransmissions.