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<p class="MsoNormal">Hello community,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">We made some modifications to Kamailio PCSCF sample cfg file, so when PCSCF receiving an tcp SUBSCRIBE message it add ;transport=tcp to the end of Contact URI. Below is what we added the route block right after if (is_method("INVITE|SUBSCRIBE”))
logic<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"> if (is_method("SUBSCRIBE") && proto=='tcp') {<o:p></o:p></p>
<p class="MsoNormal"> $var(original_contact_header) = $ct;<o:p></o:p></p>
<p class="MsoNormal"> $var(new_contact_header) = $(var(original_contact_header){re.subst,/(.*:.*)(>);/\1;transport=tcp>/g});<o:p></o:p></p>
<p class="MsoNormal"> remove_hf("Contact");<o:p></o:p></p>
<p class="MsoNormal"> append_hf("Contact: $var(new_contact_header)\r\n");<o:p></o:p></p>
<p class="MsoNormal"> msg_apply_changes();<o:p></o:p></p>
<p class="MsoNormal"> }<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">We did see the ;transport=tcp been added but we also seeing a bad line ;alias=[…] is added before the To: line
<o:p></o:p></p>
<p class="MsoNormal"><img width="703" height="26" style="width:7.3263in;height:.2708in" id="Picture_x0020_1" src="cid:image001.png@01D84375.8D109B20"><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Does anyone know what function might cause this ;alias been added before To: line?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">BR,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Weiqi<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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