我遇到了一个程序问题，6 分钟 +- 5 秒后我们得到了上述异常。下面是有关异常堆栈跟踪的更多信息。这一切都发生得非常频繁，6 分钟过去了，然后出现了以下 3 个异常。我们已在其他 2 个环境中安装了该应用程序，它在那里运行良好。我希望找到一些可能导致此问题发生的服务器设置，无论是 IIS 6 还是 Server 2003 设置。
我查看了一些类似的问题，但没有看到太多答案。我希望我提供的信息可能对您有所帮助。
208741,Exception,,,,2011-06-21 00:30:14.193,SERVERNAME,2624,1,CLIENTNAME,The underlying connection was closed: An unexpected error occurred on a receive. , at System.Web.Services.Protocols.WebClientProtocol.GetWebResponse(WebRequest request)
at System.Web.Services.Protocols.HttpWebClientProtocol.GetWebResponse(WebRequest request)
at Microsoft.Web.Services3.WebServicesClientProtocol.GetResponse(WebRequest request, IAsyncResult result)
at System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke(String methodName, Object[] parameters)
at System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size)
at System.Net.FixedSizeReader.ReadPacket(Byte[] buffer, Int32 offset, Int32 count)
at System.Net.Security._SslStream.StartFrameHeader(Byte[] buffer, Int32 offset, Int32 count, AsyncProtocolRequest asyncRequest)
at System.Net.Security._SslStream.StartReading(Byte[] buffer, Int32 offset, Int32 count, AsyncProtocolRequest asyncRequest)
at System.Net.Security._SslStream.ProcessRead(Byte[] buffer, Int32 offset, Int32 count, AsyncProtocolRequest asyncRequest)
at System.Net.TlsStream.Read(Byte[] buffer, Int32 offset, Int32 size)
at System.Net.PooledStream.Read(Byte[] buffer, Int32 offset, Int32 size)
at System.Net.Connection.SyncRead(HttpWebRequest request, Boolean userRetrievedStream, Boolean probeRead),2004437127,114,1
208742,Exception,,,,2011-06-21 00:30:14.227,SERVERNAME,2624,1,CLIENTNAME,Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host. , at System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size)
at System.Net.FixedSizeReader.ReadPacket(Byte[] buffer, Int32 offset, Int32 count)
at System.Net.Security._SslStream.StartFrameHeader(Byte[] buffer, Int32 offset, Int32 count, AsyncProtocolRequest asyncRequest)
at System.Net.Security._SslStream.StartReading(Byte[] buffer, Int32 offset, Int32 count, AsyncProtocolRequest asyncRequest)
at System.Net.Security._SslStream.ProcessRead(Byte[] buffer, Int32 offset, Int32 count, AsyncProtocolRequest asyncRequest)
at System.Net.TlsStream.Read(Byte[] buffer, Int32 offset, Int32 size)
at System.Net.PooledStream.Read(Byte[] buffer, Int32 offset, Int32 size)
at System.Net.Connection.SyncRead(HttpWebRequest request, Boolean userRetrievedStream, Boolean probeRead),2004437127,114,1
208743,Exception,,,,2011-06-21 00:30:14.287,SERVERNAME,2624,1,CLIENTNAME,An existing connection was forcibly closed by the remote host ,
at System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size),-691097507,62,1
答案1
您的应用程序是否使用 HTTP 保持活动来保持连接打开，或者这是一个大文件传输？
查看 IIS 中的超时设置（MS 有一个很好的参考这里)，但我的直觉告诉我它不存在——该错误似乎意味着正在收到一个 RST 数据包，而对于 Web 服务器来说，在由于超时而关闭连接时使用这个数据包是没有意义的。
检查是否涉及 IIS 以外的任何因素；具体来说，如果网络路径中存在防火墙或代理服务器，那么它可能会强制执行其自己的超时值。