From 5771fbd2e9d44505441da8b9142eb323d48b7735 Mon Sep 17 00:00:00 2001
From: naveenkirugulige <naveenkirugulige@gmail.com>
Date: Wed, 4 Mar 2026 16:22:50 +0530
Subject: [PATCH] api: throw error in addIceCandidate when peer connection is
 closed

Browsers (Chrome, Firefox, Safari) throw an InvalidStateError when
addIceCandidate is called on a closed RTCPeerConnection, as per the
W3C WebRTC spec. This change aligns react-native-webrtc with that
behavior by throwing an error instead of silently proceeding.

This is consistent with how addTrack and removeTrack already handle
the closed state in this codebase.

Fixes: #1795
---
 src/RTCPeerConnection.ts | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/RTCPeerConnection.ts b/src/RTCPeerConnection.ts
index 9cfe1a540..4315e2f3f 100644
--- a/src/RTCPeerConnection.ts
+++ b/src/RTCPeerConnection.ts
@@ -326,6 +326,10 @@ export default class RTCPeerConnection extends EventTarget<RTCPeerConnectionEven
     }
 
     async addIceCandidate(candidate): Promise<void> {
+        if (this.connectionState === 'closed') {
+            throw new Error('Peer Connection is closed');
+        }
+
         log.debug(`${this._pcId} addIceCandidate`);
 
         if (!candidate || !candidate.candidate) {