From de94b2d6e5c806d770576636c67877959190cd5b Mon Sep 17 00:00:00 2001
From: kwasniow <kwasniow@cisco.com>
Date: Fri, 24 Apr 2026 10:47:39 +0200
Subject: [PATCH] feat: peer connection support setConfiguration api

---
 src/mocks/rtc-peer-connection-stub.ts |  1 +
 src/peer-connection.spec.ts           | 21 +++++++++++++++++++++
 src/peer-connection.ts                |  9 +++++++++
 3 files changed, 31 insertions(+)

diff --git a/src/mocks/rtc-peer-connection-stub.ts b/src/mocks/rtc-peer-connection-stub.ts
index bbc14b6..dba9b19 100644
--- a/src/mocks/rtc-peer-connection-stub.ts
+++ b/src/mocks/rtc-peer-connection-stub.ts
@@ -27,6 +27,7 @@ class RTCPeerConnectionStub {
   ): Promise<void> {
     return new Promise(() => {});
   }
+  setConfiguration(configuration?: RTCConfiguration): void {}
   onconnectionstatechange: () => void = () => {};
   oniceconnectionstatechange: () => void = () => {};
   onicecandidate: (event: RTCPeerConnectionIceEvent) => void = () => {};
diff --git a/src/peer-connection.spec.ts b/src/peer-connection.spec.ts
index b2ea7e4..fb4ab4b 100644
--- a/src/peer-connection.spec.ts
+++ b/src/peer-connection.spec.ts
@@ -478,6 +478,27 @@ describe('PeerConnection', () => {
     });
   });
 
+  describe('setConfiguration', () => {
+    let mockPc: MockedObjectDeep<RTCPeerConnectionStub>;
+    let pc: PeerConnection;
+
+    beforeEach(() => {
+      jest.clearAllMocks();
+      mockPc = mocked(new RTCPeerConnectionStub(), true);
+      mockCreateRTCPeerConnection.mockReturnValueOnce(mockPc as unknown as RTCPeerConnection);
+      pc = new PeerConnection();
+    });
+
+    it('should call setConfiguration on the underlying peer connection', () => {
+      expect.hasAssertions();
+      const configuration: RTCConfiguration = {
+        iceServers: [{ urls: 'stun:stun.example.com' }],
+      };
+      pc.setConfiguration(configuration);
+      expect(mockPc.setConfiguration).toHaveBeenCalledWith(configuration);
+    });
+  });
+
   describe('setRemoteDescription', () => {
     let mockPc: MockedObjectDeep<RTCPeerConnectionStub>;
     let setRemoteDescriptionSpy: jest.SpyInstance;
diff --git a/src/peer-connection.ts b/src/peer-connection.ts
index 1d15ec4..4f97986 100644
--- a/src/peer-connection.ts
+++ b/src/peer-connection.ts
@@ -172,6 +172,15 @@ class PeerConnection extends EventEmitter<PeerConnectionEventHandlers> {
     return this.iceCandidates;
   }
 
+  /**
+   * Sets the current configuration of the underlying RTCPeerConnection.
+   *
+   * @param configuration - An RTCConfiguration object which provides the options to be set.
+   */
+  setConfiguration(configuration: RTCConfiguration): void {
+    this.pc.setConfiguration(configuration);
+  }
+
   /**
    * Adds a new media track to the set of tracks which will be transmitted to the other peer.
    *