I am trying to forward request from one API to another one like this:
protected Task<HttpResponseMessage> ForwardRequestToSomeApi()
{
string forwardUri = "https://some.api" + Request.RequestUri.PathAndQuery;
Request.Headers.Remove("Host");
Request.RequestUri = new Uri(forwardUri);
if (Request.Method == HttpMethod.Get)
{
Request.Content = null;
}
return new HttpClient().SendAsync(Request, HttpCompletionOption.ResponseHeadersRead);
}
but when sending PUT request I get:
Cannot close stream until all bytes are written.
Full exception info:
{"Message":"An error has occurred.","ExceptionMessage":"An error occurred while sending the request.","ExceptionType":"System.Net.Http.HttpRequestException","StackTrace":"
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n
at System.Threading.Tasks.TaskHelpersExtensions.<CastToObject>d__1`1.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n
at System.Web.Http.Controllers.ApiControllerActionInvoker.<InvokeActionAsyncCore>d__1.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n
at System.Web.Http.Controllers.ActionFilterResult.<ExecuteAsync>d__5.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n
at System.Web.Http.Controllers.ExceptionFilterResult.<ExecuteAsync>d__6.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n
at System.Web.Http.Controllers.ExceptionFilterResult.<ExecuteAsync>d__6.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n
at System.Web.Http.Dispatcher.HttpControllerDispatcher.<SendAsync>d__15.MoveNext()","InnerException":{"Message":"An error has occurred.","ExceptionMessage":"The request was aborted: The request was canceled.","ExceptionType":"System.Net.WebException","StackTrace":"
at System.Net.ConnectStream.CloseInternal(Boolean internalCall, Boolean aborting)\r\n
at System.Net.ConnectStream.System.Net.ICloseEx.CloseEx(CloseExState closeState)\r\n
at System.Net.ConnectStream.Dispose(Boolean disposing)\r\n
at System.IO.Stream.Close()\r\n
at System.Net.Http.HttpClientHandler.<>c__DisplayClass109_0.<GetRequestStreamCallback>b__0(Task task)","InnerException":{"Message":"An error has occurred.","ExceptionMessage":"Cannot close stream until all bytes are written.","ExceptionType":"System.IO.IOException","StackTrace":"
at System.Net.ConnectStream.CloseInternal(Boolean internalCall, Boolean aborting)"}}}
Inner exception :
IOException Message: "Cannot close stream until all bytes are
written." StackTrace: at
System.Net.ConnectStream.CloseInternal(Boolean internalCall, Boolean
aborting)
Update:
Provided above code is fully working, the problem was how I attempted to use it. In my main API I had next webapi action:
[HttpPut]
public Task<HttpResponseMessage> Create(string id, Foo model)
{
return ForwardRequestToSomeApi();
}
The problem here is I introduced the model in parameters, thanks to model binding request's content were being read and parsed into model, so when I forward request to another API I send request without content. The fix is to remove all parameters:
[HttpPut]
public Task<HttpResponseMessage> Create()
{
return ForwardRequestToSomeApi();
}
Related
I recently went through Confluent Kafka library in C# .net 4.7.2 framework version. But, many times I faced Local Value serialization error. Is this error is a generic one? or this error tells anything specifically? I'm not sure when will this error raises?
var rs = (RecordSchema)RecordSchema.Parse(#"{
""namespace"": ""Confluent.Kafka.Examples.AvroSpecific"",
""type"": ""record"",
""name"": ""ProduceConsumeUser2"",
""fields"": [
{""name"": ""name"", ""type"": ""string""},
{""name"": ""favorite_number"", ""type"": [""int"", ""null""]},
{""name"": ""favorite_color"", ""type"": [""string"", ""null""]}
]}");
using (var schemaRegistry = new CachedSchemaRegistryClient(schemaRegistryConfig)){
using (var genericProducer = new ProducerBuilder<string, GenericRecord>(producerConfig)
.SetValueSerializer(new AvroSerializer<GenericRecord>(schemaRegistry).AsSyncOverAsync())
.Build())
{
var genericRecord = new GenericRecord(rs);
genericRecord.Add("name", "my name 2");
genericRecord.Add("favorite_number", 44);
genericRecord.Add("favorite_color", null);
var message = new Message<string, GenericRecord>
{
Key = contentEventName,
Value = genericRecord
};
Task.Run(() => genericProducer.ProduceAsync(contentEventName, message)).ConfigureAwait(false).GetAwaiter().GetResult();
}}
Error we get:
"Error":{
"Code":-161,
"IsFatal":false,
"Reason":"Local: Value serialization error",
"IsError":true,
"IsLocalError":true,
"IsBrokerError":false
},
"Message":"Local: Value serialization error",
"Data":{ },
"InnerException":{
"ClassName":"System.Threading.Tasks.TaskCanceledException",
"Message":"A task was canceled.",
"Data":null,
"InnerException":null,
"HelpURL":null,
"StackTraceString":" at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n at Confluent.SchemaRegistry.RestService.<ExecuteOnOneInstanceAsync>d__9.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n at Confluent.SchemaRegistry.RestService.<RequestAsync>d__10`1.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n at Confluent.SchemaRegistry.RestService.<RegisterSchemaAsync>d__18.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n at Confluent.SchemaRegistry.CachedSchemaRegistryClient.<RegisterSchemaAsync>d__21.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n at Confluent.SchemaRegistry.Serdes.GenericSerializerImpl.<Serialize>d__8.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n at Confluent.SchemaRegistry.Serdes.AvroSerializer`1.<SerializeAsync>d__6.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task task)\r\n at Confluent.Kafka.Producer`2.<ProduceAsync>d__52.MoveNext()",
"RemoteStackTraceString":null,
"RemoteStackIndex":0,
"ExceptionMethod":"8\nThrowForNonSuccess\nmscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089\nSystem.Runtime.CompilerServices.TaskAwaiter\nVoid ThrowForNonSuccess(System.Threading.Tasks.Task)",
"HResult":-2146233029,
"Source":"mscorlib",
"WatsonBuckets":null
},
"StackTrace":" at Confluent.Kafka.Producer`2.<ProduceAsync>d__52.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n at System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1.ConfiguredTaskAwaiter.GetResult()\r\n at LogEvent(String contentEventName, IDictionary`2 e, RecordSchemaName re)",
"HelpLink":null,
"Source":"Confluent.Kafka",
"HResult":-2146233088
I cannot be for certain. But I got to this page because I had the same exception details /issue...
For me, solving the issue was making sure I had the correct credentials for the Schema Registry. DOH! Hope this helps for at least someone else!
In my C# test using the Confulent.Kafka and Confluent.SchemaRegistry the (username:password) are that exact syntax with the (:) colon in one string
string credentials ="MyUserName:mypassword";
var schemaRegistryConfig = new SchemaRegistryConfig()
{
Url = config.GetValue<string>("ConfluentCloud:SchemaRegistry:Url", string.Empty),
BasicAuthUserInfo = config.GetValue<string>("ConfluentCloud:SchemaRegistry:Credentials", string.Empty),
};
// no serializer required for string key
using (var schemaRegistry = new CachedSchemaRegistryClient(schemaRegistryConfig))
... etc. etc.
I am trying to parse emails coming in from send grid using the web hook feature but just get the below error...
"An error has occurred.","ExceptionMessage":"Unexpected character encountered while parsing number: W. Path '', line 1, position 6.","ExceptionType":"Newtonsoft.Json.JsonReaderException","StackTrace":" at Newtonsoft.Json.JsonTextReader.ReadNumberCharIntoBuffer(Char currentChar, Int32 charPos)\r\n at Newtonsoft.Json.JsonTextReader.ReadNumberIntoBuffer()\r\n at Newtonsoft.Json.JsonTextReader.ParseNumber(ReadType readType)\r\n at Newtonsoft.Json.JsonTextReader.ParseValue()\r\n at Newtonsoft.Json.JsonTextReader.Read()\r\n at Newtonsoft.Json.JsonReader.ReadForType(JsonContract contract, Boolean hasConverter)\r\n at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.Deserialize(JsonReader reader, Type objectType, Boolean checkAdditionalContent)\r\n at Newtonsoft.Json.JsonSerializer.DeserializeInternal(JsonReader reader, Type objectType)\r\n at Newtonsoft.Json.JsonConvert.DeserializeObject(String value, Type type, JsonSerializerSettings settings)\r\n at Newtonsoft.Json.JsonConvert.DeserializeObject(String value, Type type, JsonConverter[] converters)\r\n at Newtonsoft.Json.JsonConvert.DeserializeObject[T](String value, JsonConverter[] converters)\r\n at StrongGrid.WebhookParser.ParseWebhookEvents(String requestBody) in C:\projects\stronggrid\Source\StrongGrid\WebhookParser.cs:line 48\r\n at WebAPI_InboundMail.Controllers.HomeController.d__0.MoveNext() in C:\Dev\Baxter Personnel\Projects\Comms\WebAPI_InboundMail\WebAPI_InboundMail\Controllers\HomeController.cs:line 23\r\n--- End of stack trace from previous location where exception was thrown ---\r\n at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n at System.Threading.Tasks.TaskHelpersExtensions.d__3`1.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n at System.Web.Http.Controllers.ApiControllerActionInvoker.d__0.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n at System.Web.Http.Controllers.ActionFilterResult.d__2.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n at System.Web.Http.Dispatcher.HttpControllerDispatcher.d__1.MoveNext()"}
Here is my code, any help be great...
[HttpPost]
public async Task<IHttpActionResult> Post()
{
var requestBody = await Request.Content.ReadAsStringAsync();
var parser = new WebhookParser();
var events = parser.ParseWebhookEvents(requestBody);
bool status = true;
var response = status == true? new HttpResponseMessage(HttpStatusCode.OK) : new HttpResponseMessage(HttpStatusCode.BadRequest);
return Ok("");
}
Based on the error message (which is Unexpected character encountered while parsing number), it sounds like the WebhookParser in the StrongGrid library is trying to parse a given value into a number but the value in the Json sent by SendGrid is not numerical.
Can you look at the content of your requestBody variable and detect which property is causing the issue? If you post the content of your variable I'll try to help.
I have below code which causing issue while fetching data
var result = client.GetAsync(requestUri).Result;
If I hit requestUri from browser then it works fine. but from above code it gives below error.
Error :
One or more errors occurred.An error occurred while sending the request.The underlying connection was closed: An unexpected error occurred on a send.Authentication failed because the remote party has closed the transport stream.
Stack Trace1 :
at System.Threading.Tasks.Task1.GetResultCore(Boolean waitCompletionNotification)
at foo(String resultUrl)
at dooo(String param, String resultUrl)
at foo.<>c__DisplayClass2.<Product>b__0(String x, String y)
at foo[T](Func3 fn) at System.Net.HttpWebRequest.EndGetResponse(IAsyncResult asyncResult)
at System.Net.Http.HttpClientHandler.GetResponseCallback(IAsyncResult ar) at System.Net.TlsStream.EndWrite(IAsyncResult asyncResult)
at System.Net.ConnectStream.WriteHeadersCallback(IAsyncResult ar)
Stack Trace2
at System.Threading.Tasks.Task1.GetResultCore(Boolean waitCompletionNotification)
at Foo1(String resultUrl)
at Foo2(String param, String resultUrl)
at Foo3.<>c__DisplayClass2.<Product>b__0(String x, String y)
at Foo4(Func3 fn) at System.Net.HttpWebRequest.EndGetResponse(IAsyncResult asyncResult)
at System.Net.Http.HttpClientHandler.GetResponseCallback(IAsyncResult ar) at System.Net.TlsStream.EndWrite(IAsyncResult asyncResult)
at System.Net.ConnectStream.WriteHeadersCallback(IAsyncResult ar)
at System.Web.Http.Controllers.ApiControllerActionInvoker.d__0.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.Runtime.CompilerServices.TaskAwaiter1.GetResult()
at System.Web.Http.Filters.ActionFilterAttribute.<CallOnActionExecutedAsync>d__5.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Web.Http.Filters.ActionFilterAttribute.<CallOnActionExecutedAsync>d__5.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.Runtime.CompilerServices.TaskAwaiter1.GetResult()
at System.Web.Http.Filters.ActionFilterAttribute.d__0.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.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
at System.Web.Http.Filters.ActionFilterAttribute.d__5.MoveNext()
Also i tried awaitable call but no luck. Can we increase request timeout for get request in this scenario.
Awaitable code I tried
var result = await client.GetAsync(requestUri);
if (!result.IsSuccessStatusCode) throw new Exception(string.Format("Unable to receive data from Uri: {0}", uri.ToString()));
// write the results
using (var write = File.Create(filePath))
using (var read = await result.Content.ReadAsStreamAsync())
{
read.Seek(0, SeekOrigin.Begin);
read.CopyTo(write);
}
If the response is talking long time and you want to increase the timeout just set it on the client: https://msdn.microsoft.com/en-us/library/system.net.http.httpclient.timeout(v=vs.118).aspx
Also from looking at the class itself:
TimeSpan defaultTimeout = TimeSpan.FromSeconds(100.0);
TimeSpan maxTimeout = TimeSpan.FromMilliseconds((double) int.MaxValue);
TimeSpan infiniteTimeout = TimeSpan.FromMilliseconds(-1.0);
Maybe I'm not understanding what a VirtualFileResult is, but I'm not sure why it's throwing a FileNotFoundException when the file exists. Here's the code:
if (System.IO.File.Exists(fileName))
{
FileInfo info = new FileInfo(fileName);
return File(fileName, FileUtility.GetContentType(fileName), info.Name);
}
(Edit: FileUtility.GetContentType (correctly) returns the Mime type of the file, which in my case is "application/pdf".)
Here's the exception I get: (I removed the file path)
System.IO.FileNotFoundException: Could not find file: [file path removed]
File name: '[file path removed]'
at Microsoft.AspNet.Mvc.VirtualFileResult.<WriteFileAsync>d__11.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.Runtime.CompilerServices.TaskAwaiter.GetResult()
at Microsoft.AspNet.Mvc.Controllers.FilterActionInvoker.<InvokeResultAsync>d__56.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.Runtime.CompilerServices.TaskAwaiter.GetResult()
at Microsoft.AspNet.Mvc.Controllers.FilterActionInvoker.<InvokeResultFilterAsync>d__55.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at Microsoft.AspNet.Mvc.Controllers.FilterActionInvoker.<InvokeAllResultFiltersAsync>d__54.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.Runtime.CompilerServices.TaskAwaiter.GetResult()
at Microsoft.AspNet.Mvc.Controllers.FilterActionInvoker.<InvokeResourceFilterAsync>d__49.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at Microsoft.AspNet.Mvc.Controllers.FilterActionInvoker.<InvokeAsync>d__44.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.Runtime.CompilerServices.TaskAwaiter.GetResult()
at Microsoft.AspNet.Mvc.Infrastructure.MvcRouteHandler.<RouteAsync>d__6.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.Runtime.CompilerServices.TaskAwaiter.GetResult()
at Microsoft.AspNet.Routing.Template.TemplateRoute.<RouteAsync>d__27.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.Runtime.CompilerServices.TaskAwaiter.GetResult()
at Microsoft.AspNet.Routing.RouteCollection.<RouteAsync>d__9.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.Runtime.CompilerServices.TaskAwaiter.GetResult()
at Microsoft.AspNet.Builder.RouterMiddleware.<Invoke>d__4.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.Runtime.CompilerServices.TaskAwaiter.GetResult()
at Microsoft.AspNet.IISPlatformHandler.IISPlatformHandlerMiddleware.<Invoke>d__8.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.Runtime.CompilerServices.TaskAwaiter.GetResult()
at Microsoft.AspNet.Diagnostics.StatusCodePagesMiddleware.<Invoke>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 System.Runtime.CompilerServices.TaskAwaiter.GetResult()
at Microsoft.AspNet.Diagnostics.DeveloperExceptionPageMiddleware.<Invoke>d__7.MoveNext()
It's seemingly bugging out even though an explicit check was done for whether the file exists or not. I can also manually confirm the file exists.
Maybe I'm not understanding what a VirtualFileResult is (File method returns this). On the documentation here it doesn't really describe what it is.
I'm using ASP.NET 5 RC1.
The method you're looking for is PhysicalFile():
return PhysicalFile(fileName, FileUtility.GetContentType(fileName), info.Name);
Beware, don't use a caller-supplied path with this.
The VirtualFileResult class needs the virtual path to the file in its constructor.
This means you need to provide the path relative to the wwwroot folder because it use HostingEnvironment's WebRootFileProvider.
private IFileProvider GetFileProvider(IServiceProvider requestServices)
{
if (FileProvider != null)
{
return FileProvider;
}
var hostingEnvironment = requestServices.GetService<IHostingEnvironment>();
FileProvider = hostingEnvironment.WebRootFileProvider;
return FileProvider;
}
}
Check the code on github
No luck with File("index.html") or File("~/index.html"), Virtualfileresult throws NotFound.
My solution was to use Microsoft.AspNetCore.Mvc.ControllerBase
method File(Stream fileStream...) :
public virtual FileStreamResult File(Stream fileStream,
string contentType, string fileDownloadName);
Index controller sample:
using System.IO;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Logging;
public class IndexController : Controller
{
ILoggerFactory Logger;
public IndexController(ILoggerFactory loggerFactory)
{
Logger = loggerFactory;
}
static string sep = Path.DirectorySeparatorChar.ToString();
[HttpGet("/index")]
[HttpGet("/")]
public IActionResult Index()
{
var log = Logger.CreateLogger("trace");
var path = $"{Startup.RootPath}{sep}index.html";
log.LogWarning(path);
Stream fileStream = new System.IO.FileStream(path, FileMode.Open);
return File(fileStream, "text/html");
}
}
// AspnetCore version 1.1.1 :
// <TargetFramework>netcoreapp1.1</TargetFramework>
// <PackageReference Include="Microsoft.AspNetCore.StaticFiles" Version="1.1.1" />
Your VirtualFileResult must be a relative path from the application's wwwroot.
return File("~/foo.js","text/javascript")
is going to point to wwwroot/foo.js
I get this exception intermittently in my asp.net mvc 5 c# web application:
Server cannot append header after HTTP headers have been sent.
It just happens uploading images to S3 method (Web Api Controller).
The presendrequestheaders in Global.asax
protected void Application_PreSendRequestHeaders(object sender, EventArgs e)
{
HttpApplication app = sender as HttpApplication;
if (app != null &&
app.Context != null)
{
app.Context.Response.Headers.Remove("Server");
}
}
The method that trigger the error:
[HttpPost]
[Route("UploadImageJSON")]
public IHttpActionResult UploadImageJSON(HttpRequestMessage request)
{
var httpRequest = HttpContext.Current.Request;
// Check if files are available
if (httpRequest.Files.Count != 1) return BadRequest();
var postedFile = httpRequest.Files[0];
var contentType = postedFile.ContentType;
if (!contentType.Contains("image"))
{
return StatusCode(HttpStatusCode.NotAcceptable);
}
var keyUploadFiles = Constants.UrlS3Amazon +
S3.UploadToS3WithStream(postedFile.InputStream, contentType);
return Json(JsonConvert.SerializeObject(keyUploadFiles));
}
EDIT: More information... I have my Web App hosted in Elastic BeanStalk with a load balancer, the load balancer has installed a SSL Certificate, and the connection between the load balancer and the EC2 instances are in ports 80. Maybe it could be helpful.
The Elmah log:
System.Web.HttpException (0x80004005): Server cannot append header after HTTP headers have been sent.
at System.Web.HttpHeaderCollection.SetHeader(String name, String value, Boolean replace)
at Microsoft.Owin.Host.SystemWeb.CallHeaders.AspNetResponseHeaders.Set(String key, String[] values)
at Microsoft.Owin.Infrastructure.OwinHelpers.AppendHeaderUnmodified(IDictionary2 headers, String key, String[] values)
at Microsoft.Owin.ResponseCookieCollection.Append(String key, String value, CookieOptions options)
at Microsoft.Owin.Security.Cookies.CookieAuthenticationHandler.<ApplyResponseGrantAsync>d__b.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.Owin.Security.Infrastructure.AuthenticationHandler.<ApplyResponseCoreAsync>d__8.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.Owin.Security.Infrastructure.AuthenticationHandler.<TeardownAsync>d__5.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.Owin.Security.Infrastructure.AuthenticationMiddleware1.d__0.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.Identity.Owin.IdentityFactoryMiddleware2.<Invoke>d__0.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.Identity.Owin.IdentityFactoryMiddleware2.d__0.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.Identity.Owin.IdentityFactoryMiddleware`2.d__0.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.Owin.Mapping.MapMiddleware.d__0.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at Microsoft.Owin.Host.SystemWeb.IntegratedPipeline.IntegratedPipelineContext.EndFinalWork(IAsyncResult ar)
at System.Web.HttpApplication.AsyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)
Thanks!!
have you tried with removing app.Context.Response.Headers.Remove("Server"); i think there is this is the issue?