From bb0f8e173f93f315248c5fd7855d01203ffaf6ac Mon Sep 17 00:00:00 2001
From: Volodymyr B <volodymyr.b@didww.com>
Date: Tue, 4 Mar 2025 13:21:51 +0200
Subject: [PATCH 1/2] extend configuration for ice gathering process

---
 lib/src/sip_ua_helper.dart | 33 ++++++++++++++++++++++++++++++++-
 1 file changed, 32 insertions(+), 1 deletion(-)

diff --git a/lib/src/sip_ua_helper.dart b/lib/src/sip_ua_helper.dart
index 288d5e60..38d8886e 100644
--- a/lib/src/sip_ua_helper.dart
+++ b/lib/src/sip_ua_helper.dart
@@ -372,7 +372,10 @@ class SIPUAHelper extends EventManager {
         'iceTransportPolicy':
             (_uaSettings?.iceTransportPolicy ?? IceTransportPolicy.ALL)
                 .toParameterString(),
-        'iceServers': _uaSettings?.iceServers
+        'iceServers': _uaSettings?.iceServers,
+        'tcpCandidatePolicy':  (_uaSettings?.tcpCandidatePolicy ??
+            TcpCandidatePolicy.ENABLED).toParameterString(),
+        'iceCandidatePoolSize': _uaSettings?.iceCandidatePoolSize
       },
       'mediaConstraints': <String, dynamic>{
         'audio': true,
@@ -853,6 +856,22 @@ extension _IceTransportPolicyEncoding on IceTransportPolicy {
   }
 }
 
+enum TcpCandidatePolicy{
+  ENABLED,
+  DISABLED
+}
+
+extension _TcpCandidatePolicyEncoding on TcpCandidatePolicy {
+  String toParameterString() {
+    switch (this) {
+      case TcpCandidatePolicy.ENABLED:
+        return 'enabled';
+      case TcpCandidatePolicy.DISABLED:
+        return 'disabled';
+    }
+  }
+}
+
 class UaSettings {
   WebSocketSettings webSocketSettings = WebSocketSettings();
   TcpSocketSettings tcpSocketSettings = TcpSocketSettings();
@@ -918,6 +937,18 @@ class UaSettings {
   /// Will default to [IceTransportPolicy.ALL] if not specified.
   IceTransportPolicy? iceTransportPolicy;
 
+  /// Allows to disable tcp candidates gathering
+  /// Will default to [TcpCandidatePolicy.ENABLED] if not specified.
+  TcpCandidatePolicy? tcpCandidatePolicy;
+
+  /// An unsigned 16-bit integer value which specifies the size of the prefetched
+  /// ICE candidate pool. The default value is 0 (meaning no candidate prefetching will occur).
+  /// You may find in some cases that connections can be established more quickly
+  /// by allowing the ICE agent to start fetching ICE candidates before you start
+  /// trying to connect, so that they're already available for inspection
+  /// when RTCPeerConnection.setLocalDescription() is called.
+  int iceCandidatePoolSize = 0;
+
   /// Controls which kind of messages are to be sent to keep a SIP session
   /// alive.
   /// Defaults to "UPDATE"

From 73dfb94721de807663803a49ae36d67098a4e497 Mon Sep 17 00:00:00 2001
From: Volodymyr B <volodymyr.b@didww.com>
Date: Fri, 11 Jul 2025 08:13:15 +0300
Subject: [PATCH 2/2] fix code format

---
 lib/src/sip_ua_helper.dart | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/lib/src/sip_ua_helper.dart b/lib/src/sip_ua_helper.dart
index 38d8886e..2a15f98c 100644
--- a/lib/src/sip_ua_helper.dart
+++ b/lib/src/sip_ua_helper.dart
@@ -373,8 +373,9 @@ class SIPUAHelper extends EventManager {
             (_uaSettings?.iceTransportPolicy ?? IceTransportPolicy.ALL)
                 .toParameterString(),
         'iceServers': _uaSettings?.iceServers,
-        'tcpCandidatePolicy':  (_uaSettings?.tcpCandidatePolicy ??
-            TcpCandidatePolicy.ENABLED).toParameterString(),
+        'tcpCandidatePolicy':
+            (_uaSettings?.tcpCandidatePolicy ?? TcpCandidatePolicy.ENABLED)
+                .toParameterString(),
         'iceCandidatePoolSize': _uaSettings?.iceCandidatePoolSize
       },
       'mediaConstraints': <String, dynamic>{
@@ -856,10 +857,7 @@ extension _IceTransportPolicyEncoding on IceTransportPolicy {
   }
 }
 
-enum TcpCandidatePolicy{
-  ENABLED,
-  DISABLED
-}
+enum TcpCandidatePolicy { ENABLED, DISABLED }
 
 extension _TcpCandidatePolicyEncoding on TcpCandidatePolicy {
   String toParameterString() {