From 579b01a40554f8afe8af30c582e13014bef456e9 Mon Sep 17 00:00:00 2001
From: Duan Weiwei <duanweiwei1982@gmail.com>
Date: Wed, 11 Jan 2023 02:50:38 +0000
Subject: [PATCH] Fix the timing error when the candidate arrives before the
 answer sdp.

---
 lib/src/voip/call.dart | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/lib/src/voip/call.dart b/lib/src/voip/call.dart
index 713fc1a1..7d43e19c 100644
--- a/lib/src/voip/call.dart
+++ b/lib/src/voip/call.dart
@@ -658,6 +658,13 @@ class CallSession {
         json['sdpMLineIndex']?.round() ?? 0,
       );
 
+      if (direction == CallDirection.kOutgoing &&
+          pc != null &&
+          await pc!.getRemoteDescription() == null) {
+        remoteCandidates.add(candidate);
+        continue;
+      }
+
       if (pc != null && inviteOrAnswerSent && remotePartyId != null) {
         try {
           await pc!.addCandidate(candidate);