kamailio/test/unit/inv_auth.xml

<?xml version="1.0" encoding="ISO-8859-1" ?>
<scenario name="invite_client">
  <send retrans="500">
      <![CDATA[

      INVITE sip:alice@localhost:5059 SIP/2.0
      Via: SIP/2.0/[transport] [local_ip]:[local_port];branch=[branch]
      From: <sip:alice@localhost>;tag=[call_number]
      To: <sip:alice@localhost>
      Call-ID: [call_id]
      CSeq: 1 INVITE
      Contact: sip:alice@[local_ip]:[local_port]
      Max-Forwards: 5
      Expires: 1800
      User-Agent: SIPp/Linux
      Content-Length: 0
      ]]>
   </send>
   <recv response="407" auth="true">
   </recv>

   <send retrans="500">
      <![CDATA[

      INVITE sip:alice@localhost:5059 SIP/2.0
      Via: SIP/2.0/[transport] [local_ip]:[local_port];branch=[branch]
      From: <sip:alice@localhost>;tag=[call_number]
      To: <sip:alice@localhost>
      Call-ID: [call_id]
      CSeq: 2 INVITE
      Contact: sip:alice@[local_ip]:[local_port]
      [authentication username=alice password=alice realm=localhost];
      Max-Forwards: 5
      Expires: 1800
      User-Agent: SIPp/Linux
      Content-Length: 0
    ]]>
   </send>
   <recv response="200">
  </recv>
   </scenario>