Module: kamailio Branch: master Commit: f49f14a87606314e98a253ee29b1624ae814dccf URL: https://github.com/kamailio/kamailio/commit/f49f14a87606314e98a253ee29b1624… Author: Victor Seva &lt;vseva(a)sipwise.com&gt; Committer: Daniel-Constantin Mierla &lt;miconda(a)gmail.com&gt; Date: 2022-06-22T21:45:35+02:00 topos: don't insert contact header for 4xx replies unless original msg has contact --- Modified: src/modules/topos/tps_msg.c --- Diff: https://github.com/kamailio/kamailio/commit/f49f14a87606314e98a253ee29b1624… Patch: https://github.com/kamailio/kamailio/commit/f49f14a87606314e98a253ee29b1624… --- diff --git a/src/modules/topos/tps_msg.c b/src/modules/topos/tps_msg.c index 6f5633119d..798885df56 100644 --- a/src/modules/topos/tps_msg.c +++ b/src/modules/topos/tps_msg.c @@ -1167,6 +1167,11 @@ int tps_response_sent(sip_msg_t *msg) && msg->contact==NULL) { contact_keep = 1; } + if(contact_keep==0 && msg->first_line.u.reply.statuscode>=400 + && msg->first_line.u.reply.statuscode<500 + && msg->contact==NULL) { + contact_keep = 1; + } if(contact_keep==0) { tps_remove_headers(msg, HDR_CONTACT_T); if(direction==TPS_DIR_DOWNSTREAM) {