What can/could this message mean? asked 01 May '11, 16:29  wired |
4 Answers:
i, "Continuation" in SIP messages means that Wireshark couldn't parse the SIP message properly probably because reassembly did not work properly a couple of bugs/improvements has been made in the TCP dissector in trunk. If you have the possibility to download a build bot build you could try that. Regards Anders answered 02 May '11, 01:16  Anders ♦ |
Is reassembling actually encapsulation? TCP dissector in trunk - What's dissector? Trunk has many meanings, what's the right one in this case? If S-CSCF sends Continuation message to AS, this means that S-CSCF will continue with reassembling the SIP message? answered 02 May '11, 05:08 wired edited 02 May '11, 06:30 When something is transfered over TCP the higher level PDU, in this case SIP may be fragmented e.g there will not be a complete SIP message in a TCP frame. So Wireshark may need to "reassemble" TCP messages to build a complete SIP message to display. In wireshark the programs displaying the protocols are called dissectors. Trunk reefers to the working SW repository where the Wireshark sources are keept. I don't think the S-CSCF has any problems with these messages. Is something not working right? (02 May '11, 08:20) Anders ♦ |
Hi. Probably something wasnt' ok, but I can't be sure. I got the trace from my coworker . Anyway, thanks for explanation. answered 02 May '11, 11:21 wired |
I noticed something: When I filtered SIP traffic directly from original trace file, message Continuation didn't show up. But when I gave to Wireshark "IP command" to ignore some IP addresses and then filtered SIP traffic again, there it was this Continuation message. So, if I think clearly and I'm right, Continuation isn't neither SIP request neither SIP answer, but simply application message from Wireshark? ;-) answered 04 May '11, 19:12 wired |
Are "Continuation" messages TCP keep-alive messages?
Or is this just information message which (can) tell us that INVITE requests and (re)tries (Status: 100 Trying) (will) continue?