Fix/dial refer (#1264)

* Revert "Update dial.js (#1243)"

This reverts commit 259dedcded.

* add to .gitignore

* when we receive a REFER on the parent leg, after adulting the child the dial task in the parent session should end

test/scenarios/uas-dial-refer.xml

@@ -0,0 +1,117 @@
+<?xml version="1.0" encoding="ISO-8859-1" ?>
+<!DOCTYPE scenario SYSTEM "sipp.dtd">
+
+<scenario name="UAS that accepts call and sends REFER">
+  <!-- Receive incoming INVITE -->
+  <recv request="INVITE" crlf="true">
+    <action>
+      <ereg regexp=".*" search_in="hdr" header="Subject:" assign_to="1" />
+      <ereg regexp=".*" search_in="hdr" header="From:" assign_to="2" />
+    </action>
+  </recv>
+
+  <!-- Send 180 Ringing -->
+  <send>
+    <![CDATA[
+      SIP/2.0 180 Ringing
+      [last_Via:]
+      [last_From:]
+      [last_To:];tag=[pid]SIPpTag01[call_number]
+      [last_Call-ID:]
+      [last_CSeq:]
+      [last_Record-Route:]
+      Subject:[$1]
+      Content-Length: 0
+    ]]>
+  </send>
+
+  <!-- Send 200 OK with SDP -->
+  <send>
+    <![CDATA[
+      SIP/2.0 200 OK
+      [last_Via:]
+      [last_From:]
+      [last_To:];tag=[pid]SIPpTag01[call_number]
+      [last_Call-ID:]
+      [last_CSeq:]
+      [last_Record-Route:]
+      Subject:[$1]
+      Contact: <sip:[local_ip]:[local_port];transport=[transport]>
+      Content-Type: application/sdp
+      Content-Length: [len]
+
+      v=0
+      o=user1 53655765 2353687637 IN IP[local_ip_type] [local_ip]
+      s=-
+      c=IN IP[media_ip_type] [media_ip]
+      t=0 0
+      m=audio [media_port] RTP/AVP 0
+      a=rtpmap:0 PCMU/8000
+    ]]>
+  </send>
+
+<recv request="ACK" rtd="true" crlf="true">
+  <action>
+    <!-- Check if this is NOT the first call (tag ends with 012 or higher) -->
+    <ereg regexp="tag=1SIPpTag01[2-9]" search_in="hdr" header="To:" assign_to="3" />
+    <log message="Not first call check result: [$3]"/>
+  </action>
+</recv>
+
+<!-- Skip REFER if we found a non-first call tag -->
+<nop next="skip_refer" test="3" value="" compare="not_equal">
+  <action>
+    <log message="Found non-first call tag [$3], skipping REFER"/>
+  </action>
+</nop>
+
+<!-- Wait a moment, then send REFER (only on first call) -->
+<pause milliseconds="1000"/>
+
+<nop>
+  <action>
+    <log message="Sending REFER for first call"/>
+  </action>
+</nop>
+
+<!-- Send REFER (only on first iteration) -->
+  <send retrans="500">
+    <![CDATA[
+      REFER sip:service@[remote_ip]:[remote_port] SIP/2.0
+      Via: SIP/2.0/[transport] [local_ip]:[local_port];branch=[branch]
+      From: <sip:[local_ip]:[local_port]>;tag=[pid]SIPpTag01[call_number]
+      To: [$2]
+      [last_Call-ID:]
+      CSeq: 2 REFER
+      Contact: <sip:[local_ip]:[local_port];transport=[transport]>
+      Max-Forwards: 70
+      X-Call-Number: [call_number]
+      Refer-To: <sip:+15551234567@example.com>
+      Referred-By: <sip:[local_ip]:[local_port]>
+      Content-Length: 0
+    ]]>
+  </send>
+
+  <!-- Expect 202 Accepted (only on first iteration) -->
+  <recv response="202"/>
+  
+  <label id="skip_refer"/>
+
+  <!-- Wait for BYE from feature server -->
+  <recv request="BYE"/>
+
+  <!-- Send 200 OK to BYE -->
+  <send>
+    <![CDATA[
+      SIP/2.0 200 OK
+      [last_Via:]
+      [last_From:]
+      [last_To:]
+      [last_Call-ID:]
+      [last_CSeq:]
+      Contact: <sip:[local_ip]:[local_port];transport=[transport]>
+      Content-Length: 0
+    ]]>
+  </send>
+
+</scenario>