[SIPForum-discussion] 回复:Re: [SIPForum-discussion] No ACK
zhangn4037 at sohu.com
zhangn4037 at sohu.com
Thu Jun 21 04:37:14 UTC 2007
<p>Hello,</p><p> Thanks a lot for your help,</p><p> But I have checked the branch parameter of 200 OK, it is the same as the branch of INVITE, </p><p> perhaps you misread the branch, "ixvoicegenerate3partybranch" is the tag of TO field.</p><p> B R,</p><blockquote dir="ltr" style="padding-right: 0px; padding-left: 5px; font: 9pt 宋体; margin-left: 10px; border-left: #000000 2px solid; margin-right: 0px"><div style="font: 9pt 宋体">----- 原文 ----- </div><br /><strong>From:</strong> <a href="mailto:rjsparks at nostrum.com">Robert Sparks</a> <br /><strong>To:</strong> <a href="mailto:zhangn4037 at sohu.com">zhangn4037 at sohu.com</a> <br /><strong>Cc:</strong> <a href="mailto:discussion at sipforum.org">discussion at sipforum.org</a> <br /><strong>Subject:</strong> Re: [SIPForum-discussion] No ACK<br /><strong>Sent:</strong> Wed Jun 20 21:37:52 CST 2007<br /><br /><br /><table style="word-wrap: break-word; khtml-nbsp-mode: space; khtml-line-break: after-white-space" cellspacing="0" cellpadding="0" width="100%" border="0"><tbody><tr><td style="height: 200px" valign="top">The branch parameter on the topmost Via header field is the transaction identifier. <div>In your trace, the 200 you are concerned about has a topmost VIa containing a </div><div>branch parameter of "ixvoicegenerate3partybranch", which does not match the </div><div>INVITE's branch parameter of "z9hG4bK3590330518-32922114". </div><div><br /></div><div>The UA receiving the 200 finds no matching transaction and is dropping the response. </div><div><br /></div><div>RjS </div><div><br /><div><div>On Jun 19, 2007, at 10:23 PM, < <a href="mailto:zhangn4037 at sohu.com">mailto:zhangn4037 at sohu.com</a>> wrote: </div><br /><blockquote><blockquote dir="ltr" style="padding-right: 0px; padding-left: 5px; font: 9pt 宋体; margin-left: 10px; border-left: #000000 2px solid; margin-right: 0px"><p>?Hello all, </p><p>?Now I meet a wondering issue, when I edit?a 200 response and send to UAC, there is no ACK send out. <
/p><p>?First of all, let me introduce the test platform: </p><p>?the software ack as proxy, it can receive and send out SIP message, we use it to test the protocol conformance of? </p><p>?SIP UA. I have done the SIP basic call message flow, but when I try to simulate the call waiting message flow, I </p><p>?meet this issue, after INFO with flashhook event report to proxy, the proxy send the 200 response for the secondary </p><p>?INVITE request, but I find there is no ACK send out from UA. I doubt there are some error in the?200 response, Could </p><p>?you please help me to check it. Attachment is the ethereal capture, the n! o.24 message is?the target. </p><p>?Thanks, </p><p>?B R, </p><div>? <br /></div><div>? <br /></div><p><br /><br />? </p></blockquote><br /><br /><div class="idiograph" style="border: #a74a1e 0px solid"></div><hr /><table border="0"><tbody><tr><td style="height: 18px"><a href="http://goto.mail.sohu.com/goto.php3?code=mailadt-ta1" target="_blank"><font color="#ff0000">我积分，我得奖，天天乐透！ </font></a></td></tr><tr><td style="height: 18px"><a href="http://goto.mail.sohu.com/goto.php3?code=mailadt-ta" target="_blank">*用搜狗拼音写邮件，体验更流畅的中文输入>> </a></td></tr></tbody></table><div style="margin: 0px">_______________________________________________ </div><div style="margin: 0px">This is the SIP Forum discussion mailing list </div><div style="margin: 0px">TO UNSUBSCRIBE, or edit your delivery options, please visit <a href="http://sipforum.org/mailman/listinfo/discussion">http://sipforum.org/mailman/listinfo/discussion</a></div><div style="margin: 0px">Post to the list at <a href="mailto:discussion at sipforum.org">mailto:discussion at sipforum.org</a></div></blockquote></div><br /></div></td></tr></tbody></table></blockquote>
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