I want to proxy a sip server on websocket. but it's not working. I set dispatcher destination "sip:10.100.67.95:5066;transport=ws", it has some error . logs: 2024-05-29T02:49:15.436088156Z 11(22) WARNING: <core> [core/msg_translator.c:3007]: via_builder(): TCP/TLS connection (id: 0) for WebSocket could not be found 2024-05-29T02:49:15.436124584Z 11(22) ERROR: tm [t_msgbuilder.c:1420]: assemble_via(): via building failed 2024-05-29T02:49:15.436132262Z 11(22) ERROR: tm [t_msgbuilder.c:1611]: build_uac_req(): error while assembling Via 2024-05-29T02:49:15.436138638Z 11(22) ERROR: tm [uac.c:552]: t_uac_prepare(): Error while building message 2024-05-29T02:49:15.436145000Z 11(22) ERROR: dispatcher [dispatch.c:3981]: ds_ping_set(): unable to ping [sip:10.100.67.95:5066;transport=ws] in group [3] -- Reply to this email directly or view it on GitHub: https://github.com/kamailio/kamailio/issues/3864 You are receiving this because you are subscribed to this thread. Message ID: &lt;kamailio/kamailio/issues/3864(a)github.com&gt;