[OpenSIPS-Users] SIPv6 UA Can't receive a 500 (Server Internal Error) response from openser-1.3.4-12.fc13.i686 register server when sending a REGISTER with the equal CSeq header field value to the last value of CSeq or lower than the number

[Xiaoqiang Hu]

Hi all,
Can't receive a 500 (Server Internal Error) response from openser register server when sending a REGISTER with the equal CSeq header field value to the last value of CSeq or lower than the number. The details can be 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 at under.test.com         UA12 at under.test.com
contact-uri :                        UA11 at node.under.test.com    UA12 at node11.under.test.com
2  the test result can be seen as follows:
                        NUT  UA11 UA12 UA13 UA14 PX2  PX3  PX4  DNS
 No     time             |    |    |    |    |    |    |    |    |
 No     time             |    |    |    |    |    |    |    |    |
[0001:  0.00|    ]       |<---|    |    |    |    |    |    |    |  NS 
[0002:  0.00|    ]       |--->|    |    |    |    |    |    |    |  NA 
[0003:  2.76|U   ] REGIS |<---|    |    |    |    |    |    |    | REGISTER sip:ss.under.test.com:5060
[0004:  2.76|U   ] 401   |--->|    |    |    |    |    |    |    | 401 Unauthorized (REGISTER)
[0005:  2.84|U   ] REGIS |<---|    |    |    |    |    |    |    | REGISTER sip:ss.under.test.com:5060
[0006:  2.84|U   ] 200   |--->|    |    |    |    |    |    |    | 200 OK (REGISTER)
[0007:  2.90|U   ] REGIS |<---|    |    |    |    |    |    |    | REGISTER sip:ss.under.test.com:5060
[0008:  2.90|U   ] 200   |--->|    |    |    |    |    |    |    | 200 OK (REGISTER)

0003: <UA11	 REGISTER sip:ss.under.test.com:5060 SIP/2.0
Via: SIP/2.0/UDP node.under.test.com:5060;branch=z9hG4bKPUA9383265
Max-Forwards: 70
From: UA11 <sip:UA11 at under.test.com>;tag=11165
To: UA11 <sip:UA11 at under.test.com>
Call-ID: 11165 at www.example.com
CSeq: 1 REGISTER
Contact: <sip:UA11 at node.under.test.com;transport=udp>
Expires: 3600
Content-Length: 0

0004: >UA11	 SIP/2.0 401 Unauthorized
Via: SIP/2.0/UDP node.under.test.com:5060;branch=z9hG4bKPUA9383265;received=3FFE:501:FFFF:1:0:0:0:1
From: UA11 <sip:UA11 at under.test.com>;tag=11165
To: UA11 <sip:UA11 at under.test.com>;tag=0c0d2af89845c72ddfdc7de2133116df.8f4e
Call-ID: 11165 at www.example.com
CSeq: 1 REGISTER
WWW-Authenticate: Digest realm="under.test.com", nonce="4c147cc5fd03db60cc9c319db99f38a167269459", qop="auth"
Server: OpenSER (1.3.4-tls (i386/linux))
Content-Length: 0

0005: <UA11	 REGISTER sip:ss.under.test.com:5060 SIP/2.0
Via: SIP/2.0/UDP node.under.test.com:5060;branch=z9hG4bKPUA9383266
Max-Forwards: 70
Authorization: Digest username="UA11", realm="under.test.com", qop=auth, nonce="4c147cc5fd03db60cc9c319db99f38a167269459", opaque="", nc=00000001, cnonce="6f54a149", uri="sip:ss.under.test.com:5060", response="83dd622570f6f9a7b6666d90fcb7f615"
From: UA11 <sip:UA11 at under.test.com>;tag=11165
To: UA11 <sip:UA11 at under.test.com>
Call-ID: 11165 at www.example.com
CSeq: 2 REGISTER
Contact: <sip:UA11 at node.under.test.com;transport=udp>
Expires: 3600
Content-Length: 0

0006: >UA11	 SIP/2.0 200 OK
Via: SIP/2.0/UDP node.under.test.com:5060;branch=z9hG4bKPUA9383266;received=3FFE:501:FFFF:1:0:0:0:1
From: UA11 <sip:UA11 at under.test.com>;tag=11165
To: UA11 <sip:UA11 at under.test.com>;tag=0c0d2af89845c72ddfdc7de2133116df.366d
Call-ID: 11165 at www.example.com
CSeq: 2 REGISTER
Date: Sun, 13 Jun 2010 06:32:57 GMT
Contact: <sip:UA11 at node.under.test.com;transport=udp>;expires=3600
Server: OpenSER (1.3.4-tls (i386/linux))
Content-Length: 0
3  openser configuration file can be seen in "openser.cfg" attachment
How can I modify the configuration file if I want to receive the 500?

--------------------------------------
Regards!
Hu xiaoqiang
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