asp.net - weird connection timeout issue -

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i have asp.net site running on iis7 , in midnight, 5-7 minutes site down following error:

    error caught in application_error event  exception type: system.net.sockets.socketexception error in:   (url different withint site)   error message:  connection attempt failed because connected party did not respond after period of time, or established connection failed because connected host has failed respond  stack trace:     @ system.net.sockets.socket.receive(byte[] buffer, int32 offset, int32 size, socketflags socketflags)    @ system.net.sockets.networkstream.read(byte[] buffer, int32 offset, int32 size)  additional infomation:  physical path:  d(url different withint site) raw url:    /default.aspx request type:

google not usefull info on issue , nor myself cannot understand in code can happen because it's happening few minutes per day only, 30 minutes after midnight.

that's not lot of information go on, if it's happening on predictable schedule that, perhaps app pool being recycled on schedule, , you've got long-running code isn't being shut down gracefully somehow? or perhaps you're doing communication site , they're shutting down or slowing down around time?


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