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<p class="MsoNormal">Hi Guys,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I have a question regarding the correct processing for cancelled requests<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";color:black;mso-fareast-language:EN-GB">1. (A)--------------------INVITE ------------------->(B)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";color:black;mso-fareast-language:EN-GB">2. (A)<------------------180 RIGING------------------(B)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";color:black;mso-fareast-language:EN-GB">3. (A)--------------------CANCEL-------------------->(B)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";color:black;mso-fareast-language:EN-GB">4. (A)<------------------OK--------------------------(B)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";color:black;mso-fareast-language:EN-GB">5. (A)<---------487 Request Terminated---------------(B)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";color:black;mso-fareast-language:EN-GB">6. (A)--------------------ACK----------------------->(B)<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I have the following section to deal with cancel messages however I am finding that the 487 response still hits my failure_route block. The failure_route block is called for serial forking.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"># CANCEL processing<o:p></o:p></p>
<p class="MsoNormal">if (is_method("CANCEL"))<o:p></o:p></p>
<p class="MsoNormal"> {<o:p></o:p></p>
<p class="MsoNormal"> if (t_check_trans())<o:p></o:p></p>
<p class="MsoNormal"> xdbg("## BISNET ## - Cancel Processing\n");<o:p></o:p></p>
<p class="MsoNormal"> t_relay();<o:p></o:p></p>
<p class="MsoNormal"> exit;<o:p></o:p></p>
<p class="MsoNormal"> }<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I can obviously do something like a (!t_check_status("487")) within the failure block but is there a better way to deal with this response ?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Although this doesn’t really cause me a problem at the moment I see the following error in the debug<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">/usr/sbin/kamailio[23786]: ERROR: tm [tm.c:1368]: ERROR: w_t_relay_to: t_relay_to failed<o:p></o:p></p>
<p class="MsoNormal">/usr/sbin/kamailio[23786]: ERROR: sl [sl_funcs.c:282]: ERROR: sl_reply_error used: transaction canceled (487/SL)<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">As always your help is appreciated.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><b><span style="mso-fareast-language:EN-GB">Steve</span></b><span style="font-size:12.0pt;font-family:"Times New Roman","serif";mso-fareast-language:EN-GB"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;mso-fareast-language:EN-GB"> </span><o:p></o:p></p>
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