From f2cab6da6f1f6ece800ec2c3555f5038be31a799 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Mon, 20 Jul 2026 14:06:20 +0000
Subject: [PATCH 1/2] Initial plan


From 7f6ae0a84b903da58ce97015fd0c1111826c61be Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Mon, 20 Jul 2026 14:14:00 +0000
Subject: [PATCH 2/2] Downgrade WebSocket normal-disconnect exceptions from
 Error to Debug

When a WebSocket connection closes normally (server restart, network
jitter, client close), exceptions such as ObjectDisposedException,
SocketException (ConnectionReset/ConnectionAborted/OperationAborted)
and WebSocketException (ConnectionClosedPrematurely / Aborted state)
are expected and should not flood the log at ERROR level.

Changes:
- WsChannel.cs: Add ObjectDisposedException silent break, add
  IsNormalDisconnect helper, downgrade normal SocketException codes
  (ConnectionReset 10054, ConnectionAborted 10053, OperationAborted 995)
  to Debug log in DoPull receive loop.
- WsChannelCore.cs: Same ObjectDisposedException and SocketException
  handling; additionally catch WebSocketException with
  ConnectionClosedPrematurely or Aborted socket state and downgrade
  to Debug, simplifying the redundant state check in the generic handler.

Fixes NewLifeX/NewLife.Remoting#<issue>
---
 NewLife.Remoting/Clients/WsChannel.cs     | 14 ++++++++++++++
 NewLife.Remoting/Clients/WsChannelCore.cs | 14 ++++++++++++++
 2 files changed, 28 insertions(+)

diff --git a/NewLife.Remoting/Clients/WsChannel.cs b/NewLife.Remoting/Clients/WsChannel.cs
index 0cfba6e..0ef59fd 100644
--- a/NewLife.Remoting/Clients/WsChannel.cs
+++ b/NewLife.Remoting/Clients/WsChannel.cs
@@ -154,6 +154,12 @@ private async Task DoPull(WebSocketClient socket, CancellationTokenSource source
             catch (ThreadInterruptedException) { break; }
             catch (TaskCanceledException) { }
             catch (OperationCanceledException) { }
+            catch (ObjectDisposedException) { break; }
+            catch (SocketException sex) when (IsNormalDisconnect(sex.SocketErrorCode))
+            {
+                _client.Log?.Debug("[{0}]WebSocket连接断开[{1}]", _client.Name, sex.SocketErrorCode);
+                break;
+            }
             catch (Exception ex)
             {
                 if (source.IsCancellationRequested) break;
@@ -199,6 +205,14 @@ protected virtual async Task OnReceive(IPacket data, CancellationToken cancellat
         await _client.HandleAsync(data, ctx, cancellationToken).ConfigureAwait(false);
     }
 
+    /// <summary>判断是否为正常断开的SocketError，这类错误降级为Debug日志</summary>
+    /// <param name="socketError">Socket错误码</param>
+    /// <returns>是否为正常断开</returns>
+    protected static Boolean IsNormalDisconnect(SocketError socketError) =>
+        socketError is SocketError.ConnectionReset       // 10054 - 对方重置连接
+            or SocketError.ConnectionAborted             // 10053 - 连接被中止
+            or SocketError.OperationAborted;             // 995   - 操作被中止（本地socket关闭时）
+
     /// <summary>发送文本消息</summary>
     /// <param name="data">数据包</param>
     /// <param name="cancellationToken">取消令牌</param>
diff --git a/NewLife.Remoting/Clients/WsChannelCore.cs b/NewLife.Remoting/Clients/WsChannelCore.cs
index 001c2cb..46811e5 100644
--- a/NewLife.Remoting/Clients/WsChannelCore.cs
+++ b/NewLife.Remoting/Clients/WsChannelCore.cs
@@ -1,4 +1,5 @@
 #if NETCOREAPP
+using System.Net.Sockets;
 using System.Net.WebSockets;
 using NewLife;
 using NewLife.Collections;
@@ -141,6 +142,19 @@ private async Task DoPull(WebSocket socket, CancellationTokenSource source)
                 catch (ThreadInterruptedException) { break; }
                 catch (TaskCanceledException) { }
                 catch (OperationCanceledException) { }
+                catch (ObjectDisposedException) { break; }
+                catch (WebSocketException wex) when (
+                    wex.WebSocketErrorCode == WebSocketError.ConnectionClosedPrematurely ||
+                    socket.State == WebSocketState.Aborted)
+                {
+                    _client.Log?.Debug("[{0}]WebSocket连接断开[{1}]", _client.Name, wex.WebSocketErrorCode);
+                    break;
+                }
+                catch (SocketException sex) when (IsNormalDisconnect(sex.SocketErrorCode))
+                {
+                    _client.Log?.Debug("[{0}]WebSocket连接断开[{1}]", _client.Name, sex.SocketErrorCode);
+                    break;
+                }
                 catch (Exception ex)
                 {
                     if (source.IsCancellationRequested) break;