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- using System;
- using System.ComponentModel;
- using System.IO;
- using System.Net.Sockets;
- using System.Net;
- using System.Diagnostics;
- using System.Text;
- using Shadowsocks.Util.SystemProxy;
-
- namespace NLog
- {
- public static class LoggerExtension
- {
- public static void Dump(this Logger logger, string tag, byte[] arr, int length)
- {
- if (logger.IsTraceEnabled)
- {
- var sb = new StringBuilder($"{Environment.NewLine}{tag}: ");
- for (int i = 0; i < length - 1; i++)
- {
- sb.Append($"0x{arr[i]:X2}, ");
- }
- sb.Append($"0x{arr[length - 1]:X2}");
- sb.Append(Environment.NewLine);
- logger.Trace(sb.ToString());
- }
- }
-
- public static void Debug(this Logger logger, EndPoint local, EndPoint remote, int len, string header = null, string tailer = null)
- {
- if (logger.IsDebugEnabled)
- {
- if (header == null && tailer == null)
- logger.Debug($"{local} => {remote} (size={len})");
- else if (header == null && tailer != null)
- logger.Debug($"{local} => {remote} (size={len}), {tailer}");
- else if (header != null && tailer == null)
- logger.Debug($"{header}: {local} => {remote} (size={len})");
- else
- logger.Debug($"{header}: {local} => {remote} (size={len}), {tailer}");
- }
- }
-
- public static void Debug(this Logger logger, Socket sock, int len, string header = null, string tailer = null)
- {
- if (logger.IsDebugEnabled)
- {
- logger.Debug(sock.LocalEndPoint, sock.RemoteEndPoint, len, header, tailer);
- }
- }
-
- public static void LogUsefulException(this Logger logger, Exception e)
- {
- // just log useful exceptions, not all of them
- if (e is SocketException)
- {
- SocketException se = (SocketException)e;
- if (se.SocketErrorCode == SocketError.ConnectionAborted)
- {
- // closed by browser when sending
- // normally happens when download is canceled or a tab is closed before page is loaded
- }
- else if (se.SocketErrorCode == SocketError.ConnectionReset)
- {
- // received rst
- }
- else if (se.SocketErrorCode == SocketError.NotConnected)
- {
- // The application tried to send or receive data, and the System.Net.Sockets.Socket is not connected.
- }
- else if (se.SocketErrorCode == SocketError.HostUnreachable)
- {
- // There is no network route to the specified host.
- }
- else if (se.SocketErrorCode == SocketError.TimedOut)
- {
- // The connection attempt timed out, or the connected host has failed to respond.
- }
- else
- {
- logger.Warn(e);
- }
- }
- else if (e is ObjectDisposedException)
- {
- }
- else if (e is Win32Exception)
- {
- var ex = (Win32Exception)e;
-
- // Win32Exception (0x80004005): A 32 bit processes cannot access modules of a 64 bit process.
- if ((uint)ex.ErrorCode != 0x80004005)
- {
- logger.Warn(e);
- }
- }
- else if (e is ProxyException)
- {
- var ex = (ProxyException)e;
- switch (ex.Type)
- {
- case ProxyExceptionType.FailToRun:
- case ProxyExceptionType.QueryReturnMalformed:
- case ProxyExceptionType.SysproxyExitError:
- logger.Error($"sysproxy - {ex.Type.ToString()}:{ex.Message}");
- break;
- case ProxyExceptionType.QueryReturnEmpty:
- case ProxyExceptionType.Unspecific:
- logger.Error($"sysproxy - {ex.Type.ToString()}");
- break;
- }
- }
- else
- {
- logger.Warn(e);
- }
- }
- }
- }
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