Ethereal-dev: [Ethereal-dev] Re: [Ethereal-users] Decoding SIP problem

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From: Lars Roland <lars.roland@xxxxxxx>
Date: Tue, 02 Nov 2004 16:33:28 +0100
Hello Luca,

You are right. Ethereal's SIP parser is not perfect here.
ethereal doesn't recognize your invite as a SIP Message, because there are three space characters between the URI and the Version string in the request line. The solution is to improve ethereal's sip parser so that it treats multiple space characters as a single one.
Unfortunately I have no time to work on this right now, but others might have. 

Regards,
Lars


Bianchi Luca wrote:


Hello,
I'm using ethereal 0.10.7 for monitoring SIP calls. I found a problem in decoding an INVITE message, in the attachement you can find the "invite_ko.cap" and the corresponding "invite_ok.txt", I mean the same packet decoded correctly with another analyzer. I hope this could be helpful for improving SIP decoding. Best Regards, Luca Bianchi 
Luca Bianchi

Telecom Italia LAB LAB.TS.S

Via Reiss Romoli, 274 - 10148 Turin (Italy)

Tel.: +39.011.2287336

Fax.: +39.011.2286813

Mob.: +39 335 1326587

E-mail: luca1.bianchi@xxxxxxxxxxxxxxxx

_http://www.telecomitalialab.com_ <http://www.telecomitalialab.com/>

Gruppo Telecom Italia - Direzione e coordinamento di Telecom Italia S.p.A.

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------------------------------------------------------------------------

11:04:29/757.4 1-    D4 +D4 DATA UNIT----------------------------------[00608]+
                        | Protocol: UDP        from IP                        |
                        |  S:163.162.180.150 D:163.162.51.230                 |
                        +-----------------------------------------------------+
                     D4 UDP   (S:05062 D:05060)  Len:00574 Chk:3a79     [0566]
                     D5 SIP                                             [0566]
                          INVITE sip:__sip-uireq@xxxxxxxxxxxxxx;user=243883   SIP/2.0
                          Route: <sip:163.162.51.230:5060>
                          CSeq: 2025723182 INVITE
                          i: 1099389867310--7732263889123288985@163.162.180.13
                          t: <sip:__sip-uireq@xxxxxxxxxxxxxx>
                          f: <sip:55555@xxxxxx>;tag=10993897120413
                          l: 0
                          m: <sip:163.162.180.151:5060>
                          Max-Forwards: 69
                          Record-Route: <sip:sSsS.a3a2b4a0@163.162.180.150;lr>
                          v: SIP/2.0/UDP 163.162.180.150:5060 ;branch=z9hG4bK.sSsS.a3a2b4a0.3fe1febd9bd
                          4c828068a210fa25380.465, SIP/2.0/UDP 163.162.180.151:5060 ;branch=z9hG4bK.sSs
                          S.a3a2b4a1.da910d74d113e1ed53b6766a431f1f0.330


------------------------------------------------------------------------

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