【m】优化socket代码

Packages/com.unity.renderstreaming@3.1.0-exp.9/Runtime/Scripts/IRenderStreamingHandler.cs

@@ -50,6 +50,26 @@ namespace Unity.RenderStreaming
         ///
         /// </summary>
         event Action<string, RTCDataChannel> onAddChannel;
+
+        /// <summary>
+        /// 参与者加入事件 (connectionId, participantId)
+        /// </summary>
+        event Action<string, string> onParticipantJoined;
+
+        /// <summary>
+        /// 参与者离开事件 (connectionId, participantId)
+        /// </summary>
+        event Action<string, string> onParticipantLeft;
+
+        /// <summary>
+        /// 呼叫请求事件 (connectionId, data)
+        /// </summary>
+        event Action<string, string> onCallRequest;
+
+        /// <summary>
+        /// 自定义消息事件 (connectionId, participantId, message)
+        /// </summary>
+        event Action<string, string, string> onMessage;
     }
 
     public interface IRenderStreamingHandler