OPTIONS soap.beep://192.0.2.103:3002 SIP/2.0
To: sip:user@example.com
From: sip:caller@example.net;tag=384
Max-Forwards: 3
Call-ID: novelsc.asdfasser0q239nwsdfasdkl34
CSeq: 3923423 OPTIONS
Via: SIP/2.0/TCP host9.example.com;branch=z9hG4bKkdjuw39234
Content-Length: 0
