[英]ASP.NET CORE 2 System.Net.Sockets.SocketException: Whenever uploading files
当我尝试通过 IIS/服务器上传文件时,我总是收到以下错误消息,它在本地工作,但在服务器上,它总是有这个问题。
有谁知道可能是什么问题?
错误信息:
调用事件处理程序失败:Microsoft.AspNetCore.Connections.ConnectionResetException:远程主机强行关闭了现有连接 ---> System.Net.Sockets.SocketException:Microsoft.AspNetCore 上的远程主机强行关闭了现有连接。 Server.Kestrel.Transport.Sockets.Internal.SocketAwaitable.GetResult() 在 Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.Internal.SocketConnection.ProcessReceives() 在 Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.Internal。 SocketConnection.DoReceive() --- 内部异常堆栈跟踪结束 --- 在 System.IO.Pipelines.PipeCompletion.ThrowLatchedException() 在 System.IO.Pipelines.Pipe.GetReadResult(ReadResult& result) 在 System.IO.Pipelines。 Pipe.GetReadAsyncResult() 在 System.IO.Pipelines.Pipe.DefaultPipeReader.GetResult(Int16 token)
在 Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http.Http1MessageBody.PumpAsync() 在 System.IO.Pipelines.PipeCompletion.ThrowLatchedException() 在 System.IO.Pipelines.Pipe.GetReadResult(ReadResult& result) 在 System.IO .Pipelines.Pipe.ReadAsync(CancellationToken token) 在 System.IO.Pipelines.Pipe.DefaultPipeReader.ReadAsync(CancellationToken cancelToken) 在 Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http.MessageBody.ReadAsync(Memory1 buffer, CancellationToken cancellationToken) at Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http.HttpRequestStream.ReadAsyncInternal(Memory
令牌1 buffer, CancellationToken cancellationToken) at Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http.HttpRequestStream.ReadAsyncInternal(Memory
1 缓冲区,CancellationToken 取消令牌)在 Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http.HttpRequestStream.Read(Byte[] buffer, Int32 offset, Int32 count) at Microsoft.AspNetCore.WebUtilities.FileBufferingReadStream.Read(Byte[] buffer, Int32 offset, Int32 count) at System.IO.StreamReader.ReadBuffer() at System.IO.StreamReader.ReadToEnd()在 Sentry.Extensibility.DefaultRequestPaylo adExtractor.DoExtractPayLoad(IHttpRequest request) at Sentry.Extensibility.BaseRequestPayloadExtractor.ExtractPayload(IHttpRequest request) at Sentry.Extensibility.RequestBodyExtractionDispatcher.ExtractPayload(IHttpRequest request) at Sentry.AspNetCore.ScopeExtensions.SetBodycontext(BaseNet scope, S-Options) Sentry.AspNetCore.SentryMiddleware.PopulateScope(HttpContext context, Scope scope) at Sentry.Scope.Evaluate()
代码隐藏
try
{
string folder = "FileLocation/";
string folderpath = "";
if (model.Filess != null)
{
string fileExtension = Path.GetExtension(model.Filess.FileName);
fileExtension = fileExtension.ToLower();
long fileSize = model.Filess.Length;
if (fileSize <= 10485760)
{
folderpath = Path.Combine(__hostingEnvironment.WebRootPath, "Uploads", folder);
if (!Directory.Exists(folderpath))
{
Directory.CreateDirectory(folderpath);
}
var parsedContentDisposition =
ContentDispositionHeaderValue.Parse(model.Filess.ContentDisposition);
var filename = Path.Combine(__hostingEnvironment.WebRootPath,
"Uploads", folder, parsedContentDisposition.FileName.Trim('"'));
using (var stream = System.IO.File.OpenWrite(filename))
{
await model.Filess.CopyToAsync(stream);
}
}
};
}
catch (Exception ex)
{
}
根据此 github问题,MSFT 已在 asp.net core 2.1 上修复了此问题。 我建议您可以尝试在您的服务器上更新您的 asp.net 核心运行时版本(至 2.2)。
我也在我这边创建了一个测试演示并发布到 IIS 服务器,它运行良好。
关于我的测试演示的更多细节,您可以参考以下代码:
MVC 视图:
@model UploadViewModel
@{
ViewData["Title"] = "Index";
}
<h1>Index</h1>
<form asp-action="CreateAsync" enctype="multipart/form-data">
<input asp-for="Id" />
<input asp-for="Filess" />
<input type="submit" />
</form>
控制器:
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net.Http.Headers;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Mvc;
using MVCCoreUpload.Models;
namespace MVCCoreUpload.Controllers
{
public class FileUploadController : Controller
{
private readonly IHostingEnvironment _hostingEnvironment;
public FileUploadController(IHostingEnvironment hostingEnvironment)
{
_hostingEnvironment = hostingEnvironment;
}
public IActionResult Index()
{
return View(new UploadViewModel());
}
public async Task<IActionResult> CreateAsync(UploadViewModel model)
{
try
{
string folder = "FileLocation/";
string folderpath = "";
if (model.Filess != null)
{
string fileExtension = Path.GetExtension(model.Filess.FileName);
fileExtension = fileExtension.ToLower();
long fileSize = model.Filess.Length;
if (fileSize <= 10485760)
{
folderpath = Path.Combine(_hostingEnvironment.WebRootPath, "Uploads", folder);
if (!Directory.Exists(folderpath))
{
Directory.CreateDirectory(folderpath);
}
var parsedContentDisposition =
ContentDispositionHeaderValue.Parse(model.Filess.ContentDisposition);
var filename = Path.Combine(_hostingEnvironment.WebRootPath,
"Uploads", folder, parsedContentDisposition.FileName.Trim('"'));
using (var stream = System.IO.File.OpenWrite(filename))
{
await model.Filess.CopyToAsync(stream);
}
}
};
}
catch (Exception ex)
{
}
return View("index");
}
}
}
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