chan_pjsip: Test Session Timer

Test if chan_pjsip replies w/ 422 (Session Interval Too Small) response
to an INVITE request w/ Session-Expires lower than timers_min_se
setting.

tests/channels/pjsip/session_timers/session-timer-minse/configs/ast1/extensions.conf

@@ -0,0 +1,4 @@
+[default]
+exten => test,1,Answer()
+same => n,Wait(10)
+same => n,Hangup

tests/channels/pjsip/session_timers/session-timer-minse/configs/ast1/pjsip.conf

@@ -0,0 +1,14 @@
+[system]
+type=system
+timer_t1=100
+timer_b=6400
+
+[local-transport-udp]
+type=transport
+protocol=udp
+bind=127.0.0.1
+
+[sipp]
+type=endpoint
+context=default
+timers_min_se=180

tests/channels/pjsip/session_timers/session-timer-minse/sipp/session-timer-minse.xml

@@ -0,0 +1,57 @@
+<?xml version="1.0" encoding="ISO-8859-1" ?>
+<!DOCTYPE scenario SYSTEM "sipp.dtd">
+
+<scenario name="empty reinvite all codecs">
+  <!-- In client mode (sipp placing calls), the Call-ID MUST be         -->
+  <!-- generated by sipp. To do so, use [call_id] keyword.                -->
+  <send retrans="500">
+    <![CDATA[
+
+      INVITE sip:test@[remote_ip]:[remote_port] SIP/2.0
+      Via: SIP/2.0/[transport] [local_ip]:[local_port];branch=[branch]
+      From: sipp <sip:sipp@[local_ip]:[local_port]>;tag=[pid]SIPpTag00[call_number]
+      To: sut <sip:[service]@[remote_ip]>
+      Call-ID: [call_id]
+      CSeq: 1 INVITE
+      Contact: sip:sipp@[local_ip]:[local_port]
+      Max-Forwards: 70
+      Supported: timer
+      Session-Expires: 120;refresher=uac
+      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 8
+      a=rtpmap:8 PCMA/8000
+      a=rtpmap:0 PCMU/8000
+      a=ptime:20
+
+    ]]>
+  </send>
+
+  <recv response="100" optional="true"/>
+
+  <recv response="422"/>
+
+  <send>
+    <![CDATA[
+
+      ACK sip:[service]@[remote_ip]:[remote_port] SIP/2.0
+      Via: SIP/2.0/[transport] [local_ip]:[local_port];branch=[branch]
+      From: sipp <sip:sipp@[local_ip]:[local_port]>;tag=[pid]SIPpTag00[call_number]
+      To: sut <sip:[service]@[remote_ip]>[peer_tag_param]
+      Call-ID: [call_id]
+      CSeq: 1 ACK
+      Contact: sip:sipp@[local_ip]:[local_port]
+      Max-Forwards: 70
+      Subject: Performance Test
+      Content-Length: 0
+
+    ]]>
+  </send>
+
+</scenario>

tests/channels/pjsip/session_timers/session-timer-minse/test-config.yaml

@@ -0,0 +1,27 @@
+testinfo:
+    summary: 'Ensure Session Interval Too Small response'
+    description: |
+        'A SIPp scenario places a call into Asterisk w/ Session-Expires smaller than
+        configured Min-SE. Asterisk should respond w/ 422.'
+
+test-modules:
+    test-object:
+        config-section: sipp-config
+        typename: 'sipp.SIPpTestCase'
+
+sipp-config:
+    memcheck-delay-stop: 7
+    test-iterations:
+        -
+            scenarios:
+                - { 'key-args': {'scenario': 'session-timer-minse.xml'}}
+
+properties:
+    dependencies:
+        - python: 'twisted'
+        - python: 'starpy'
+        - app: 'sipp'
+        - asterisk: 'res_pjsip'
+        - asterisk: 'res_pjsip_session'
+    tags:
+        - pjsip

tests/channels/pjsip/session_timers/tests.yaml

@@ -0,0 +1,2 @@
+tests:
+    - test: 'session-timer-minse'

tests/channels/pjsip/tests.yaml

@@ -39,6 +39,7 @@ tests:
     - dir: 'rtp_ptime'
     - dir: 'ignore_183_wo_sdp'
     - dir: 'all_codecs_on_empty_reinvite'
+    - dir: 'session_timers'
     - test: 'accountcode'
     - test: 'acl_call'
     - test: 'allow_overlap'