flow:
  - start|DEFAULT_ONREPLY:
  - return|DEFAULT_ONREPLY:
  - start|dialog:failed:
  - return|dialog:failed:
  - return|dialog:failed:
sip_in:
  - 'SIP/2.0 404 Not Found'
  - 'From: <sip:4311002@spce.test>;tag=[\w-]+'
  - 'To: <sip:testuser1003@spce.test>;tag=[\w-]+'
  - 'CSeq: \d+ INVITE'
  - 'Contact: <sip:127.1.0.1:\d+;transport=UDP>'
  - 'Content-Length: 0'
  - 'P-NGCP-Src-Ip: 127.1.0.1'
  - 'P-NGCP-Src-Port: \d+'
  - 'P-NGCP-Src-Proto: udp'
  - 'P-NGCP-Src-Af: 4'
sip_out:
  - [
      'ACK sip:testuser1003@127.1.0.1:\d+ SIP/2.0',
      'From: <sip:4311002@spce.test>;tag=[\w-]+',
      'To: <sip:testuser1003@spce.test>;tag=[\w-]+',
      'CSeq: \d+ ACK',
      'Content-Length: 0',
    ]
  - [
      'SIP/2.0 404 Not Found',
      'From: <sip:4311002@spce.test>;tag=[\w-]+',
      'To: <sip:testuser1003@spce.test>;tag=[\w-]+',
      'CSeq: \d+ INVITE',
      'Contact: <sip:127.1.0.1:\d+;transport=UDP>',
      'Content-Length: 0',
      'P-NGCP-Src-Ip: 127.1.0.1',
      'P-NGCP-Src-Port: \d+',
      'P-NGCP-Src-Proto: udp',
      'P-NGCP-Src-Af: 4',
    ]