requesttimedout_ping_sinfor dlan连接失败(2)

将页面部署在IIS上，然后请求页面，等待10秒到25秒左右问题重现。

产生原理

这里有一个得注意的地方，为什么我们页面逻辑在执行Sleep却抛出了HttpException，执行线程被谁打断了，是怎么打断的？

研究这个问题我们首先要用windbg来察看一下这个异常发生的调用栈信息。

通过windbg attach到w3wp进程，然后输入命令'sxe clr'捕获clrfirst chance exception

CLR exception - code e0434f4d (first chance)

First chance exceptions are reported before any exception handling.

This exception may be expected and handled.

KERNELBASE!RaiseException0x68:

000007fb`bbb789cc 488b8c24c0000000 mov rcx,qword ptr [rsp0C0h] ss:000000da`6bf0da20=38a1bff3b7640000

0:023> KL

Child-SP RetAddr Call Site

000000da`6bf0d960 000007fb`a0da98ef KERNELBASE!RaiseException0x68

000000da`6bf0da40 000007fb`a0d03e07 mscorwks!RaiseTheExceptionInternalOnly0x2ff

000000da`6bf0db30 000007fb`a0cc58cf mscorwks!Thread::HandleThreadAbort0x19b

000000da`6bf0dbd0 000007fb`a0cbe815 mscorwks!Thread::HandleThreadInterrupt0x7b

000000da`6bf0dc30 000007fb`a1280769 mscorwks!Thread::UserSleep0x89

000000da`6bf0dc90 000007fb`415d09ee mscorwks!ThreadNative::Sleep0xf9

000000da`6bf0de40 000007fb`41630f39 App_Web_kng1ridv!ASP.sleep120_aspx.Page_Load(System.Object, System.EventArgs)0xe

…

000000da`6bf0fae0 000007fb`beb53501 KERNEL32!BaseThreadInitThunk0x1a

000000da`6bf0fb10 00000000`00000000 ntdll!RtlUserThreadStart0x21

栈上面的first chanceexception为ThreadAbortException。

0:023> !dso

OS Thread Id: 0x12e0 (23)

RSP/REG Object Name

000000da6bf0d968 000000da0aac3ea0 System.Threading.ThreadAbortException

000000da6bf0da30 000000da0aac3ea0 System.Threading.ThreadAbortException

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