获取WebSocket错误:当使用File.Copy和SignalR时网络错误12030
获取WebSocket错误:当使用File.Copy和SignalR时网络错误12030
提问于 2017-04-02 03:20:48
我下载了样本SignalR进度条解决方案。它模拟服务器上长时间运行的进程，使用SignalR不断更新客户端。它在IISExpress上运行得很好，直到我在控制器中向我的方法添加了一个File.Copy(source, destination, true) (参见下面)。
public JsonResult LongRunningProcess()
{
string directory = Server.MapPath("~/bin/") + @"\";
string source = directory + @"Templates\Template.xlsx";
string destination = directory + @"Spreadsheets\output file.xlsx";
System.IO.File.Copy(source, destination, true);
for (int i = 0; i <= 50; i++)
{
Thread.Sleep(500);
Functions.SendProgress("Process in progress...", i , 50);
}
return Json("", JsonRequestBehavior.AllowGet);
}现在，我在服务器端接收到一个WebSocketException：
SignalR.Transports.WebSocketTransport Error: 0 : OnError(7bdc2904-8f12-4324-898f-58e4a9f4e686, System.Net.WebSockets.WebSocketException (0x800703E3): The I/O operation has been aborted because of either a thread exit or an application request
at System.Web.WebSockets.WebSocketPipe.<>c__DisplayClass9_0.<ReadFragmentAsync>b__0(Int32 hrError, Int32 cbIO, Boolean fUtf8Encoded, Boolean fFinalFragment, Boolean fClose)
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Web.WebSockets.AspNetWebSocket.<DoWork>d__45`1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Web.WebSockets.AspNetWebSocket.<>c__DisplayClass36_0.<<ReceiveAsyncImpl>b__0>d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.AspNet.SignalR.WebSockets.WebSocketMessageReader.<ReadMessageAsync>d__3.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.AspNet.SignalR.WebSockets.WebSocketHandler.<ProcessWebSocketRequestAsync>d__25.MoveNext())以及客户端的WebSocket错误：
SCRIPT12030: WebSocket Error: Network Error 12030, The connection with the server was terminated abnormally
[time] SignalR: Unclean disconnect from websocket:
[time] SignalR: Closing the Websocket.当我在引发jQuery.signalr-2.2.1.js，事件时选中时，错误代码是1000。
我还在SignalR网站上提出了一个问题。如果你能提出任何办法找出这件事发生的地点/原因，我将不胜感激。
更多信息：
- 正如我所测试的，它发生在Internet和Google中。
- 我在Visual 2015上使用SignalR 2.2.1和.NET Framework4.5.2，但我也尝试了不同的SignalR版本(2.0.2)。
回答 1
Stack Overflow用户
回答已采纳
发布于 2017-04-03 04:53:30
我终于找到了解决这个问题的办法。我试图在Bin文件夹中进行以下更改：
string directory = Server.MapPath("~/bin/") + @"\";
string source = directory + @"Templates\Template.xlsx";
string destination = directory + @"Spreadsheets\output file.xlsx";
System.IO.File.Copy(source, destination, true);导致IIS回收应用程序域，因此，SignalR连接重置并引发WebSocketException。因此，将第一行更改为：
string directory = Server.MapPath("~/") + @"\";解决了我的问题。
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/43164272
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