According RFC webrtc clients should use ws: as transport. From my point of veiw we need overwrite transport on kamailio side, when client try use wss transport. On Wed, May 11, 2022, 10:40 PM Luis Azedo &lt;luis.azedo(a)factorlusitano.com&gt; wrote: Hi, has anyone seen this error before ? running from master thanks 116(469) ERROR: <core> [main.c:1231]: parse_phostport(): bad protocol in wss:192.168.1.197:61609 <http://192.168.1.197:61609> 116(469) ERROR: siptrace [siptrace.c:2545]: pv_get_siptrace(): invalid src_addr: wss:192.168.1.197:61609 <http://192.168.1.197:61609> 116(469) ERROR: <core> [main.c:1231]: parse_phostport(): bad protocol in wss:10.10.4.159:5065 <http://10.10.4.159:5065> 116(469) ERROR: siptrace [siptrace.c:2554]: pv_get_siptrace(): invalid dst_addr: wss:10.10.4.159:5065 <http://10.10.4.159:5065> snippet of config modparam("siptrace", "trace_mode", 1) modparam("siptrace", "trace_init_mode", 1) event_route[siptrace:msg] {     if ($sel(cfg_get.kazoo.trace_ignored_methods) != $null) {         if($rm =~ $sel(cfg_get.kazoo.trace_ignored_methods)) {             xlog("L_DEBUG", "dropping trace for method $rm\n");             drop();         }     }     if ($sel(cfg_get.kazoo.trace_ignored_ports) != $null) {         if($Rp =~ $sel(cfg_get.kazoo.trace_ignored_ports)) {             xlog("L_INFO", "dropping trace for port $Rp\n");             drop();         }     }     #!ifdef KZ_TRACE_IGNORE_INTERNAL     if ($siptrace(src_hostip) =~ "127\\.0\\.0\\.1") drop();     if ($siptrace(dst_hostip) =~ "127\\.0\\.0\\.1") drop();     #!endif } _______________________________________________ Kamailio (SER) - Development Mailing List sr-dev(a)lists.kamailio.org https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-dev _______________________________________________ Kamailio (SER) - Development Mailing List sr-dev(a)lists.kamailio.org https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-dev