Re: [SR-Users] websocket transport protocol in Record-Route header

On 27.09.20 15:43, Juha Heinanen wrote: I never went to read all the specs and discover the rationale of having only transport=ws for URI, but I remember that initially the websocket code in Kamailio (iirc, was developed mainly by Peter Dunkley) was using wss, but then had to be updated to match the rfc. I think that from standardisation point of view, the websocket can be only via tls/https, the version over tcp was more like for troubleshooting. On the other hand, the Via header can have WS and WSS (afaik from RFC). From the point of view of a server that only accepts websocket connection, never opens, practically it has to find an active connection that matches on remote peer ip and port, with websocket protocol flag set (it is impossible to have two matching the same, one over tcp and one over tls). If nobody else here can add more, this aspect can be clarified by asking on sip-implementors mailing list or maybe ietf sipcore wg mailing list. Cheers, Daniel -- Daniel-Constantin Mierla -- www.asipto.com www.twitter.com/miconda -- www.linkedin.com/in/miconda Funding: https://www.paypal.me/dcmierla