{
  "method": "REGISTER",
  "uri": "sip:example.com",
  "version": "2.0",
  "headers": {
    "to": {
      "uri": "sip:j.user@example.com",
      "params": {}
    },
    "from": {
      "uri": "sip:j.user@example.com",
      "params": {
        "tag": "43251j3j324"
      }
    },
    "max-forwards": "8",
    "call-id": "dblreq.0ha0isndaksdj99sdfafnl3lk233412",
    "contact": [
      {
        "uri": "sip:j.user@host.example.com",
        "params": {}
      }
    ],
    "cseq": {
      "seq": 8,
      "method": "REGISTER"
    },
    "via": [
      {
        "version": "2.0",
        "protocol": "UDP",
        "host": "192.0.2.125",
        "params": {
          "branch": "z9hG4bKkdjuw23492"
        }
      }
    ],
    "content-length": 0
  },
  "content": "\r\nINVITE sip:joe@example.com SIP/2.0\r\nt: sip:joe@example.com\r\nFrom: sip:caller@example.net;tag=141334\r\nMax-Forwards: 8\r\nCall-ID: dblreq.0ha0isnda977644900765@192.0.2.15\r\nCSeq: 8 INVITE\r\nVia: SIP/2.0/UDP 192.0.2.15;branch=z9hG4bKkdjuw380234\r\nContent-Type: application/sdp\r\nContent-Length: 150\r\n\r\nv=0\r\no=mhandley 29739 7272939 IN IP4 192.0.2.15\r\ns=-\r\nc=IN IP4 192.0.2.15\r\nt=0 0\r\nm=audio 49217 RTP/AVP 0 12\r\nm =video 3227 RTP/AVP 31\r\na=rtpmap:31 LPC\r\n\r\n"
}