#3674: Add test server that answer REGISTER request (200 OK) with a different Contact

tools/sippxml/uac_register_diff_contact.xml

+<?xml version="1.0" encoding="ISO-8859-2" ?>
+
+<!--  Use with CSV file struct like: 3000;192.168.1.106;[authentication username=3000 password=3000];
+      (user part of uri, server address, auth tag in each line)
+-->
+
+<scenario name="register_client">
+  <send retrans="500">
+    <![CDATA[
+
+      REGISTER sip:127.0.0.1 SIP/2.0
+      Via: SIP/2.0/[transport] [local_ip]:[local_port];branch=[branch]
+      From: <sip:[field0]@[field1]>;tag=[call_number]
+      To: <sip:[field0]@[field1]>
+      Call-ID: [call_id]
+      CSeq: [cseq] REGISTER
+      Contact: sip:[field0]@[local_ip]:[local_port]
+      Max-Forwards: 10
+      Expires: 120
+      User-Agent: SIPp/Win32
+      Content-Length: 0
+
+    ]]>
+  </send>
+
+  <!-- asterisk -->
+  <recv response="200">
+    <action>
+      <ereg regexp=".*" search_in="hdr" header="Contact:" check_it="true" assign_to="1" />  
+    </action>
+  </recv>
+
+  <send retrans="500">
+    <![CDATA[
+
+      REGISTER sip:127.0.0.1 SIP/2.0
+      Via: SIP/2.0/[transport] [local_ip]:[local_port];branch=[branch]
+      From: <sip:[field0]@[field1]>;tag=[call_number]
+      To: <sip:[field0]@[field1]>
+      Call-ID: [call_id]
+      CSeq: [cseq] REGISTER
+      Contact: [$1]
+      Max-Forwards: 10
+      Expires: 120
+      User-Agent: SIPp/Win32
+      Content-Length: 0
+
+    ]]>
+  </send>
+
+  <recv response="200"> 
+  </recv>
+
+
+</scenario>

tools/sippxml/uas_register_diff_contact.xml

+<?xml version="1.0" encoding="ISO-8859-2" ?>
+<!DOCTYPE scenario SYSTEM "sipp.dtd">
+
+<scenario name="UAS REGISTER + SUBSCRIBE/noresource">
+  <!-- By adding rrs="true" (Record Route Sets), the route sets         -->
+  <!-- are saved and used for following messages sent. Useful to test   -->
+  <!-- against stateful SIP proxies/B2BUAs.                             -->
+  <recv request="REGISTER" crlf="true">
+  </recv>
+
+  <!-- The '[last_*]' keyword is replaced automatically by the          -->
+  <!-- specified header if it was present in the last message received  -->
+  <!-- (except if it was a retransmission). If the header was not       -->
+  <!-- present or if no message has been received, the '[last_*]'       -->
+  <!-- keyword is discarded, and all bytes until the end of the line    -->
+  <!-- are also discarded.                                              -->
+  <!--                                                                  -->
+  <!-- If the specified header was present several times in the         -->
+  <!-- message, all occurences are concatenated (CRLF seperated)        -->
+  <!-- to be used in place of the '[last_*]' keyword.                   -->
+
+  <send>
+    <![CDATA[
+
+      SIP/2.0 200 OK
+      [last_Via:]
+      [last_From:]
+      [last_To:];tag=[call_number]
+      [last_Call-ID:]
+      [last_CSeq:]
+      Contact: <sip:127.0.0.50:5060;transport=[transport]>
+      Content-Length: 0
+
+    ]]>
+  </send>
+
+  <recv request="REGISTER" crl="true">
+  </recv>
+  
+  <send>
+    <![CDATA[
+
+      SIP/2.0 200 OK
+      [last_Via:]
+      [last_From:]
+      [last_To:];tag=[call_number]
+      [last_Call-ID:]
+      [last_CSeq:]
+      Contact: <sip:sip:127.0.0.50:5060;transport=[transport]>
+      Content-Length: 0
+    ]]>
+  </send>
+
+</scenario>
+