According to 116daef9b55d82a016d1fd3e3d877a2468c55d1a commit description loaded. TLS is mandatory for MSRP relays. According [rfc4976#section-9.2](https://datatracker.ietf.org/doc/html/rfc4976#section-… TLS is used to authenticate relays to senders and to provide integrity and confidentiality for the headers being transported. MSRP clients and relays MUST implement TLS. Yes, according to RTF proxy must support TLS, but this does not dictate the TLS usage on the client side. I think the client a free to use TCP only. I will check RFC restrictions for the client. -- You are receiving this because you are subscribed to this thread. Reply to this email directly or view it on GitHub: https://github.com/kamailio/kamailio/issues/2881#issuecomment-940203745

yes, looks as TLS always must be used on the proxy side. Closing ticket. -- You are receiving this because you are subscribed to this thread. Reply to this email directly or view it on GitHub: https://github.com/kamailio/kamailio/issues/2881#issuecomment-940224237