From f3c7b9217990687dc96229b9b3bc351d40b2c020 Mon Sep 17 00:00:00 2001
From: zi6xuan <zi6xuan@gmail.com>
Date: Sat, 11 Sep 2021 23:15:37 +0900
Subject: [PATCH 1/3] hangup add the options

hangup function increase self-determination option number of participants, expedient unity communication time notification
---
 lib/src/sip_ua_helper.dart | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/src/sip_ua_helper.dart b/lib/src/sip_ua_helper.dart
index 477571fb..2fc0c40a 100644
--- a/lib/src/sip_ua_helper.dart
+++ b/lib/src/sip_ua_helper.dart
@@ -412,9 +412,9 @@ class Call {
     refer.on(EventReferFailed(), (EventReferFailed data) {});
   }
 
-  void hangup() {
+  void hangup(Map<String, dynamic> options) {
     assert(_session != null, 'ERROR(hangup): rtc session is invalid!');
-    _session.terminate();
+    _session.terminate(options);
   }
 
   void hold() {

From 0e17fe67eea39d829b72876f72fc635027d1b893 Mon Sep 17 00:00:00 2001
From: cloudwebrtc <duanweiwei1982@gmail.com>
Date: Sun, 19 Sep 2021 09:27:16 +0800
Subject: [PATCH 2/3] fix: Fix breaking changes.

---
 lib/src/sip_ua_helper.dart | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/src/sip_ua_helper.dart b/lib/src/sip_ua_helper.dart
index 2fc0c40a..93654602 100644
--- a/lib/src/sip_ua_helper.dart
+++ b/lib/src/sip_ua_helper.dart
@@ -412,7 +412,7 @@ class Call {
     refer.on(EventReferFailed(), (EventReferFailed data) {});
   }
 
-  void hangup(Map<String, dynamic> options) {
+  void hangup([Map<String, dynamic> options]) {
     assert(_session != null, 'ERROR(hangup): rtc session is invalid!');
     _session.terminate(options);
   }

From 017ab497b88923289e375d32830035aae7a36c6b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E8=B6=99=E9=87=91=E5=85=83?= <choukg.zw@gmail.com>
Date: Tue, 12 Oct 2021 21:46:42 +0900
Subject: [PATCH 3/3] Add extended header support

Add extended header support, in order to carry custom information when calling
---
 lib/src/sip_ua_helper.dart | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/lib/src/sip_ua_helper.dart b/lib/src/sip_ua_helper.dart
index 8723ffe2..0fc7af7b 100644
--- a/lib/src/sip_ua_helper.dart
+++ b/lib/src/sip_ua_helper.dart
@@ -69,12 +69,16 @@ class SIPUAHelper extends EventManager {
   }
 
   Future<bool> call(String target,
-      {bool voiceonly = false, MediaStream mediaStream = null}) async {
+      {bool voiceonly = false,
+      MediaStream mediaStream = null,
+      List<String> headers = const []}) async {
     if (_ua != null && _ua.isConnected()) {
       Map<String, Object> options = buildCallOptions(voiceonly);
       if (mediaStream != null) {
         options['mediaStream'] = mediaStream;
       }
+      List<dynamic> extHeaders = options['extraHeaders'];
+      extHeaders.addAll(headers);
       _ua.call(target, options);
       return true;
     } else {
@@ -273,6 +277,7 @@ class SIPUAHelper extends EventManager {
 
     Map<String, Object> _defaultOptions = <String, dynamic>{
       'eventHandlers': handlers,
+      'extraHeaders': <dynamic>[],
       'pcConfig': <String, dynamic>{
         'sdpSemantics': 'unified-plan',
         'iceServers': _uaSettings.iceServers
@@ -391,6 +396,7 @@ class Call {
 
   String get id => _id;
   RTCPeerConnection get peerConnection => _session.connection;
+  RTCSession get session => _session;
   CallStateEnum state;
 
   void answer(Map<String, Object> options, {MediaStream mediaStream = null}) {