fix:change TException to Exception

samples/Apache.IoTDB.Samples/SessionPoolTest.cs

@@ -45,6 +45,8 @@ public async Task Test()
         {
             await TestOpenWithNodeUrls();
 
+            await TestOpenWith2NodeUrls();
+
             await TestOpenWithNodeUrlsAndInsertOneRecord();
 
             await TestInsertOneRecord();
@@ -128,6 +130,21 @@ public async Task TestOpenWithNodeUrls()
             await session_pool.Close();
             Console.WriteLine("TestOpenWithNodeUrls Passed!");
         }
+        public async Task TestOpenWith2NodeUrls()
+        {
+            var session_pool = new SessionPool(new List<string>() { host + ":" + port, host + ":" + (port + 1) }, 8);
+            await session_pool.Open(false);
+            Debug.Assert(session_pool.IsOpen());
+            if (debug) session_pool.OpenDebugMode();
+            await session_pool.Close();
+
+            session_pool = new SessionPool(new List<string>() { host + ":" + (port + 1), host + ":" + port }, 8);
+            await session_pool.Open(false);
+            Debug.Assert(session_pool.IsOpen());
+            if (debug) session_pool.OpenDebugMode();
+            await session_pool.Close();
+            Console.WriteLine("TestOpenWith2NodeUrls Passed!");
+        }
         public async Task TestOpenWithNodeUrlsAndInsertOneRecord()
         {
             var session_pool = new SessionPool(node_urls, 8);

src/Apache.IoTDB/SessionPool.cs

@@ -195,7 +195,7 @@ public async Task Open(CancellationToken cancellationToken = default)
                         }
                         break;
                     }
-                    catch (TException e)
+                    catch (Exception e) // CreateAndOpen will not throw TException
                     {
 #if NET461_OR_GREATER || NETSTANDARD2_0
 #else