上篇博文中给大家分享了使用Windbg分析线程阻塞问题：
2. 加载SOS, .loadby sos clr
.loadby sos clr
3. 启用异常捕获 sxe clr
sxe clr
4. 运行，捕获&查看异常 g !pe
g
上图的输出中，我们发现了以下异常信息：SocketException：远程追究强迫关闭了一个现有的连接
0:032> !pe Exception object: 000000d79aedb7a8 Exception type: System.Net.Sockets.SocketException Message: 远程主机强迫关闭了一个现有的连接。 InnerException: <none> StackTrace (generated): <none> StackTraceString: <none> HResult: 80004005
异常Exception对象的内存地址：
000000d79aedb7a8
5. 查看异常所在线程堆栈!clrstack, 查看异常所在线程堆栈的参数和变量 !clrstack -a / !dso
0:032> !pe Exception object: 000000d79aedb7a8 Exception type: System.Net.Sockets.SocketException Message: 远程主机强迫关闭了一个现有的连接。 InnerException: <none> StackTrace (generated): <none> StackTraceString: <none> HResult: 800040050:032> !clrstack OS Thread Id: 0x15968 (32) Child SP IP Call Site 000000d7b927ea88 00007ffe61c395fc [HelperMethodFrame: 000000d7b927ea88] 000000d7b927eb70 00007ffe52e68f0f *** WARNING: Unable to verify checksum for C:\Windows\assembly\NativeImages_v4.0.30319_64\System\47e0be927382f169f5de470fab0ceb7d\System.ni.dll System.Net.Sockets.NetworkStream.Read(Byte[], Int32, Int32) [f:\dd\NDP\fx\src\net\System\Net\Sockets\NetworkStream.cs @ 513] 000000d7b927ebe0 00007ffe53e59c04 *** WARNING: Unable to verify checksum for C:\Windows\assembly\NativeImages_v4.0.30319_64\mscorlib\5d0c037297cc1a64b52ce43b45c2ac2e\mscorlib.ni.dll System.IO.BufferedStream.ReadByte() [f:\dd\ndp\clr\src\BCL\system\io\bufferedstream.cs @ 814] 000000d7b927ec10 00007ffe53e2183c System.IO.BinaryReader.ReadByte() [f:\dd\ndp\clr\src\BCL\system\io\binaryreader.cs @ 143] 000000d7b927ec40 00007ffdf6188eb5 RabbitMQ.Client.Impl.Frame.ReadFrom(RabbitMQ.Util.NetworkBinaryReader) 000000d7b927ecb0 00007ffdf6188e13 RabbitMQ.Client.Impl.SocketFrameHandler.ReadFrame() 000000d7b927ed10 00007ffdf6188cfc RabbitMQ.Client.Framing.Impl.Connection.MainLoopIteration() 000000d7b927ed50 00007ffdf6188a9f RabbitMQ.Client.Framing.Impl.Connection.MainLoop() 000000d7b927edb0 00007ffe53e34740 System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean) [f:\dd\ndp\clr\src\BCL\system\threading\executioncontext.cs @ 954] 000000d7b927ee80 00007ffe53e345d4 System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean) [f:\dd\ndp\clr\src\BCL\system\threading\executioncontext.cs @ 902] 000000d7b927eeb0 00007ffe53e345a2 System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object) [f:\dd\ndp\clr\src\BCL\system\threading\executioncontext.cs @ 891] 000000d7b927ef00 00007ffe53ebcf62 System.Threading.ThreadHelper.ThreadStart() [f:\dd\ndp\clr\src\BCL\system\threading\thread.cs @ 111] 000000d7b927f158 00007ffe55325a03 [GCFrame: 000000d7b927f158] 000000d7b927f4a8 00007ffe55325a03 [DebuggerU2MCatchHandlerFrame: 000000d7b927f4a8]
上面的输出中，我们能看到异常所在的线程是32号线程，线程堆栈如下，RabbitMQ的通讯异常（心跳线程连接RabbitMQ Server异常）
继续看线程堆栈的变量：
!clrstack -a
