use lock

Synapse/RpcClient.cs

@@ -42,6 +42,9 @@ public partial class Synapse
 
     private string? FireRpc(string app, string action, object? param, Dictionary<string, string>? headers = null,
         int? timeout = null)
+    {
+        // 检查并发情况下的线程安全问题，使用锁保证字典操作的原子性
+        lock (ResponseCompletionSources)
         {
             string paramJson;
             if (param is string strParam)
@@ -100,3 +103,4 @@ public partial class Synapse
             return response;
         }
     }
+}