I'm trying to make a SIP request to a SIP server, using pjsua, a SIP client by pjsip (version 2.10, 2020-02-14). Starting the client this way:
pjsua-x86_64-apple-darwin19.4.0 --id sip:addreessee@sever_host_name:5061;transport=tcp --no-udp
Using the "S" command to send an arbitrary REQUEST, typing a SIP method (I tried with MESSAGE and others) to use in the request and than adding as destination URI "sip:sever_host_name:5061"
The result is:
Destination URI: sip:addreessee@sever_host_name:5061
13:48:02.121 pjsua_core.c .TX 342 bytes Request msg MESSAGE/cseq=53264 (tdta0x7f96c501cca8) to UDP sever_host_name:5061:
MESSAGE sip:addresse@sever_host_name:5061 SIP/2.0
Via: SIP/2.0/UDP 192.168.1.15:5060;rport;branch=z9hG4bKPjI-s3KUBrnruOqLAKEtCOLnJ.jJPKmoDe
Max-Forwards: 70
From: <sip:addreessee@server_host_name>;tag=1lsf1PY19Qc4fk-8IhoqTV9plx3kX0yC
To: <sip:addreessee@server_host_name>
Call-ID: -X2iZRlerEaevvVvOZlAX5STQnBaGuN2
CSeq: 53264 MESSAGE
Content-Length: 0
So the request is sent over UDP transport layer, not TCP. Can anyone tell me what am I doing wrong?
You should add ;transport=tcp to your request URI each time.
You can read more here (link)