【m】优化socket代码

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

@@ -28,6 +28,21 @@ namespace Unity.RenderStreaming
         /// </summary>
         public string sdp { get; set; }
 
+        /// <summary>
+        /// 参与者ID
+        /// </summary>
+        public string participantId { get; set; }
+
+        /// <summary>
+        /// 角色 (host/participant)
+        /// </summary>
+        public string role { get; set; }
+
+        /// <summary>
+        /// 自定义消息内容
+        /// </summary>
+        public string message { get; set; }
+
         /// <summary>
         /// 
         /// </summary>