In case drachtio app is UAS and responds 200 OK to remote sip server, my app sets own User-Agent header but is always overwritten to "drachtio-fsmrf:{uuid}" which is used only with freeswitch side.
Besides, X-esl-outbound header is also responded to remote sip server.
In case drachtio app is UAS and responds 200 OK to remote sip server, my app sets own User-Agent header but is always overwritten to "drachtio-fsmrf:{uuid}" which is used only with freeswitch side. Besides, X-esl-outbound header is also responded to remote sip server.