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</o:shapelayout></xml><![endif]--></head><body lang=SV link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal><span lang=EN-US>Hi , we are using Opensips 2.3.3 and have a setup with <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>UAC- Edge Proxy – Registrar – Freeswitch<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Clients connect using TLS and we use UDP for internal communication.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Edge proxy use force_send_socket(udp:172.27.251.4:5070) and all have been fine even for packets of around 1700 bytes.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Now we have installed the system in a new environment and have started to see MTU problems and we want to switch to TCP for the internal communication.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>We have switched to setting the sent socket to tcp: force_send_socket(tcp:172.27.251.4:5070) but this fails.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>We listen on the same port on both UDP and TCP.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>With debug logging this is the only output:<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>2018-03-22T16:58:50.517287+00:00 err sipedge-qa-1 ERROR:tm:msg_send: send() to 172.27.251.4:5070 for proto tcp/2 failed<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>2018-03-22T16:58:50.517669+00:00 err sipedge-qa-1 ERROR:tm:t_forward_nonack: sending request failed<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Any ideas?<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Thanks in advance / Olle<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p></div></body></html>