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WEB API: The client disconnected [duplicate]

I'm getting the following error in logs for WebAPI
System.Web.HttpException (0x800703E3): The client disconnected. at
System.Web.Hosting.IIS7WorkerRequest.EndRead(IAsyncResult asyncResult)
at System.Web.HttpBufferlessInputStream.EndRead(IAsyncResult
asyncResult) at System.Threading.Tasks.TaskFactory
1.FromAsyncTrimPromise 1.Complete(TInstance thisRef, Func 3 endMethod, IAsyncResult asyncResult, Boolean requiresSynchronization)
--- 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.IO.StreamReader.d__97.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.IO.StreamReader.d__62.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.OwinRequest.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.Security.OAuth.OAuthAuthorizationServerHandler.d__22.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.OAuth.OAuthAuthorizationServerHandler.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.Security.Infrastructure.AuthenticationMiddleware
1.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 Web.API.Middleware.OwinMiddleware.d__1.MoveNext()
in D:\UAT\Web.API\Middleware\OwinMiddleware.cs:line 49
How can I handle and ignore these exceptions by exception filter? Why this error occurs and how can I reproduce that? I wanna catch and ignore only The client disconnected but not all HttpException
I saw this similar question but how can I do that in exception filter?

You can ignore these exceptions.
The exception says what the problem is: "The client disconnected". It means that the client initiated a request but then disconnected before it bothered to read all of the response.
There are any numbers of reasons why that might be the case, but (unless you have a dodgy internet connection at your server end) it is almost certainly an issue at the client end. I regularly see these myself and mostly it seems to be related to a bot. So I filter them out and ignore them.

try
{
// Open Connection
// Do stuff
}
catch (HttpException ex)
{
// Log it?
// Ignore it?
// Do what you want with it?
}
finally
{
// Close connection
}

ASP.NET Identity does not authenticate user after successful sign in

I am using using the "default" authentication code generated by Visual Studio, at the creation of a new project.
The authentication (using local accounts) goes well... in most of the cases. In some cases (I cannot establish a pattern), even if the result of the sign-in is "success", the user does not appear to be authenticated and it's not being redirected to the start page. This is the code:
// Validate the user password
var manager = Context.GetOwinContext().GetUserManager<ApplicationUserManager>();
var signinManager = Context.GetOwinContext().GetUserManager<ApplicationSignInManager>();
var result = signinManager.PasswordSignIn(Email.Text, Password.Text, true, shouldLockout: false);
switch (result)
{
case SignInStatus.Success:
BLL.HelperMethods.LogInfo("Inside 'switch', on branch 'Success'");
IdentityHelper.RedirectToReturnUrl(Request.QueryString["ReturnUrl"], Response);
break;
...
}
I can see in the log file that the result of the authentication is success. Even so, the page is not being redirected and the user is not being authenticated.
Thank you.
LATER EDIT:
I think that the following error, which appears from time to time is related to this problem:
EXCEPTION TYPE: System.Web.HttpException
EXCEPTION MESSAGE: Server cannot append header after HTTP headers have been sent.
SOURCE: Global.asax.cs -> Application_Error
STACK TRACE: at System.Web.HttpHeaderCollection.SetHeader(String name, String value, Boolean replace)
at System.Web.HttpHeaderCollection.Set(String name, String value)
at Microsoft.Owin.Host.SystemWeb.CallHeaders.AspNetResponseHeaders.Set(String key, String[] values)
at Microsoft.Owin.Host.SystemWeb.CallHeaders.AspNetResponseHeaders.set_Item(String key, String[] value)
at Microsoft.Owin.Infrastructure.OwinHelpers.SetHeaderUnmodified(IDictionary`2 headers, String key, String[] values)
at Microsoft.Owin.Infrastructure.OwinHelpers.AppendHeaderUnmodified(IDictionary`2 headers, String key, String[] values)
at Microsoft.Owin.HeaderDictionary.AppendValues(String key, String[] values)
at Microsoft.Owin.Infrastructure.ChunkingCookieManager.AppendResponseCookie(IOwinContext context, String key, String value, CookieOptions options)
at Microsoft.Owin.Security.Cookies.CookieAuthenticationHandler.<ApplyResponseGrantAsync>d__f.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__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.<ApplyResponseAsync>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.AuthenticationMiddleware`1.<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.IdentityFactoryMiddleware`2.<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.IdentityFactoryMiddleware`2.<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.IdentityFactoryMiddleware`2.<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.Owin.Host.SystemWeb.IntegratedPipeline.IntegratedPipelineContextStage.<RunApp>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.Host.SystemWeb.IntegratedPipeline.IntegratedPipelineContext.<DoFinalWork>d__2.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at Microsoft.Owin.Host.SystemWeb.IntegratedPipeline.StageAsyncResult.End(IAsyncResult ar)
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)

I have found another question which describes the same problem. AND some workarounds. It seems to be a bug. You can find the solution here - ASP.NET_SessionId + OWIN Cookies do not send to browser

Task Canceled exception on RavenDB when creating indexes

I'm having an issue trying to create indexes on RavenDB 3.5
When creating more than 3 indexes the application just dies, getting a
Unable to connect to the remote server Status Code: ConnectFailure
The index creation code is farely straight forward:
private static void CreateIndexes(IDocumentStore documentStore)
{
new PurchaseOrder_QueryByExternalReference().Execute(documentStore);
new SupplierDocument_QueryBySupplierName().Execute(documentStore);
new ProductDocument_QueryByProductIdAndName().Execute(documentStore);
new PurchaseOrderLine_QueryableIndex().Execute(documentStore);
new PurchaseOrderLine_ForPurchaseOrderIndex().Execute(documentStore);
}
But the same happens if the
IndexCreation.CreateIndexes(typeof(MyIndexClass).Assembly, store);
method is called. This happens with any 3 indexes from the list on any order.
Full stack-trace is this:
exception
{"A task was canceled."}
Data: {System.Collections.ListDictionaryInternal}
Etag: null
HResult: -2146233088
HelpLink: null
InnerException: null
Message: "A task was canceled."
Response: {StatusCode: 503, ReasonPhrase: 'Service Unavailable', Version: 1.1, Content: , Headers:
{
}}
ResponseString: "Unable to connect to the remote server Status Code: ConnectFailure"
Source: "Raven.Client.Lightweight"
StackTrace: " at Raven.Client.Connection.Implementation.HttpJsonRequest.<>c__DisplayClass36_0.<b__0>d.MoveNext() in C:\Builds\RavenDB-Stable-3.5\Raven.Client.Lightweight\Connection\Implementation\HttpJsonRequest.cs:line 258
--- 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 Raven.Client.Connection.Implementation.HttpJsonRequest.d__381.MoveNext() in C:\\Builds\\RavenDB-Stable-3.5\\Raven.Client.Lightweight\\Connection\\Implementation\\HttpJsonRequest.cs:line 312
--- 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 Raven.Client.Connection.Implementation.HttpJsonRequest.<ReadResponseJsonAsync>d__35.MoveNext() in C:\\Builds\\RavenDB-Stable-3.5\\Raven.Client.Lightweight\\Connection\\Implementation\\HttpJsonRequest.cs:line 221
--- 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 Raven.Client.Connection.Async.AsyncServerClient.<>c__DisplayClass69_0.<<GetIndexAsync>b__0>d.MoveNext() in C:\\Builds\\RavenDB-Stable-3.5\\Raven.Client.Lightweight\\Connection\\Async\\AsyncServerClient.cs:line 726
--- 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 Raven.Client.Connection.ReplicationInformerBase1.d__341.MoveNext() in C:\\Builds\\RavenDB-Stable-3.5\\Raven.Client.Lightweight\\Connection\\ReplicationInformerBase.cs:line 417
--- 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.ValidateEnd(Task task)
at Raven.Client.Connection.ReplicationInformerBase1.d__331.MoveNext() in C:\\Builds\\RavenDB-Stable-3.5\\Raven.Client.Lightweight\\Connection\\ReplicationInformerBase.cs:line 316
--- 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 Raven.Client.Connection.Async.AsyncServerClient.<ExecuteWithReplication>d__1641.MoveNext() in C:\Builds\RavenDB-Stable-3.5\Raven.Client.Lightweight\Connection\Async\AsyncServerClient.cs:line 0
--- 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 Raven.Abstractions.Util.AsyncHelpers.<>c__DisplayClass1_11.<<RunSync>b__0>d.MoveNext() in C:\\Builds\\RavenDB-Stable-3.5\\Raven.Abstractions\\Util\\AsyncHelpers.cs:line 75
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at Raven.Abstractions.Util.AsyncHelpers.RunSync[T](Func1 task) in C:\Builds\RavenDB-Stable-3.5\Raven.Abstractions\Util\AsyncHelpers.cs:line 89
at Raven.Client.Connection.ServerClient.GetIndex(String name) in C:\Builds\RavenDB-Stable-3.5\Raven.Client.Lightweight\Connection\ServerClient.cs:line 222\
at Raven.Client.Indexes.AbstractIndexCreationTask.Execute(IDatabaseCommands databaseCommands, DocumentConvention documentConvention) in C:\Builds\RavenDB-Stable-3.5\Raven.Client.Lightweight\Indexes\AbstractIndexCreationTask.cs:line 304
at Raven.Client.DocumentStoreBase.ExecuteIndex(AbstractIndexCreationTask indexCreationTask) in C:\Builds\RavenDB-Stable-3.5\Raven.Client.Lightweight\DocumentStoreBase.cs:line 102
at Raven.Client.Indexes.AbstractIndexCreationTask.Execute(IDocumentStore store) in C:\Builds\RavenDB-Stable-3.5\Raven.Client.Lightweight\Indexes\AbstractIndexCreationTask.cs:line 221
at Persistence.Database.Adapter.RavenDb.RavenDbDocumentStoreFactory.CreateIndexes(IDocumentStore documentStore) in \my\route\Persistence.Database.Adapter\RavenDb\RavenDbDocumentStoreFactory.cs:line 50
at Persistence.Database.Adapter.RavenDb.RavenDbDocumentStoreFactory.ConfigureDocumentStore(IDocumentStore documentStore) in \my\route\Persistence.Database.Adapter\RavenDb\RavenDbDocumentStoreFactory.cs:line 38
at Persistence.Database.Adapter.RavenDb.RavenDbDocumentStoreFactory.Create(String ravenDbLocation, String ravenDbDatabase) in \my\route\Persistence.Database.Adapter\RavenDb\RavenDbDocumentStoreFactory.cs:line 22
at Persistence.Database.Adapter.PersistenceAdapter.<.ctor>b__8_0() in \my\route\Persistence.Database.Adapter\PersistenceAdapter.cs:line 53
at Persistence.Database.Adapter.PersistenceAdapter.RegisterRavenDbUtilities() in \my\route\Persistence.Database.Adapter\PersistenceAdapter.cs:line 175
at Persistence.Database.Adapter.PersistenceAdapter.RegisterRavenLogic() in \my\route\Persistence.Database.Adapter\PersistenceAdapter.cs:line 86
at Persistence.Database.Adapter.PersistenceAdapter.Initialize() in \my\route\Persistence.Database.Adapter\PersistenceAdapter.cs:line 74
at My-Program.ConfigurePersistentAdapter(Settings settings) in \my\route\MessageQueueListener\MessageQueueListenerService.cs:line 153
at My-Program.AddBootstrapperExtension() in \my\route\net-stock-purchasing-service.MessageQueueListener\MessageQueueListenerService.cs:line 118
at My-Program.Startup() in \my\route\net-stock-purchasing-service.MessageQueueListener\MessageQueueListenerService.cs:line 78"
StatusCode: ServiceUnavailable
TargetSite: {Void MoveNext()}

When RavenDB 3.5 was release, something broke in the client package.
If you are running RavenDB.Client from 3.0.30000 to 3.0.30179, then it should work.
If you are running a higher version, then you will encounter (in certain conditions) this exception. To resolve that, you can use an alternate API: store.DatabaseCommands.PutIndexes.
var indexes = new List<AbstractIndexCreationTask>();
indexes.Add(new MyIndex1());
indexes.Add(new MyIndex2());
indexes.Add(new MyIndex....());
var transfos = new List<AbstractTransformerCreationTask>();
transfos.Add(new MyTransformer1());
transfos.Add(new MyTransformer2());
transfos.Add(new MyTransformer...());
// put indexes in 1 command
var indexesToPut = IndexCreation.CreateIndexesToAdd(indexes, documentStore.Conventions);
documentStore.DatabaseCommands.PutIndexes(indexesToPut);
// don't forget transformers
foreach (var item in transfos)
{
item.Execute(Store);
}
This should solve your problem.
I was encountering this problem after upgrading my client package. Note that the exception occurred only in console applications and not in my web applications.

That solved the issue for me:
var indexes = IndexCreation.CreateIndexesToAdd(new List<AbstractIndexCreationTask> {...}, store.Conventions);
var alreadyExisting = store.DatabaseCommands.GetIndexes(0, 128)
.ToDictionary(i => i.Name);
foreach (var index in indexes.Where(i => !alreadyExisting.ContainsKey(i.Name)))
store.DatabaseCommands.PutIndex(index.Name, index.Definition);
store.DatabaseCommands.PutIndexes(indexes);

In my case it turned out to be due to a mismatch of ravendb client library and the installed server. My application was running the latest version of the RavenDB client and the server is using version 3.0

Server cannot append header after HTTP headers have been sent in Telerik Reporting

I have deployed a Telerik Report (v9.1.15.731) on a machine, and the report itself works great. But when I try to “Export” the report, or click the "Print" icon on it, after the “Save As” window appears and I save, the file doesn't get saved.
It eventually does get saved, but once in every 10-15 tries. But it is random. And this issue occurs only in Telerik's Reporting.
I have checked the EventViewer Log and found that the following exception appeared every time this issue was faced.
"Server cannot append header after HTTP headers have been sent."
Here is the full log:
Event code: 3005
Event message: An unhandled exception has occurred.
Event time: 12-Dec-16 11:03:18 AM
Event time (UTC): 12-Dec-16 8:03:18 AM
Event ID: 3d4f8afcdaba4ed5bc5786c27a4311ee
Event sequence: 40
Event occurrence: 1
Event detail code: 0
Application information:
Application domain: /LM/W3SVC/4/ROOT-7-131260033658791910
Trust level: Full
Application Virtual Path: /
Application Path: C:\Kit\CCB-GP-Reports\
Machine name: CCBSQL
Process information:
Process ID: 1384
Process name: w3wp.exe
Account name: CONSCRT\administrator
Exception information:
Exception type: HttpException
Exception message: 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(IDictionary''2 headers, String key, String[] values)
at Microsoft.Owin.Infrastructure.ChunkingCookieManager.AppendResponseCookie(IOwinContext context, String key, String value, CookieOptions options)
at Microsoft.Owin.Security.Cookies.CookieAuthenticationHandler.d__f.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.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.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.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.AuthenticationMiddleware''1.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.Security.Infrastructure.AuthenticationMiddleware''1.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.Host.SystemWeb.IntegratedPipeline.IntegratedPipelineContextStage.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.Host.SystemWeb.IntegratedPipeline.IntegratedPipelineContext.d__2.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)
Request information:
Request URL: http://ccbsql:1010/api/reports/clients/110315-5a11/instances/103714-54ba/documents/110316-df3e110316-3e23/resources/f6a8312b165f4639a029ba42c07f56bc/
Request path: /api/reports/clients/110315-5a11/instances/103714-54ba/documents/110316-df3e110316-3e23/resources/f6a8312b165f4639a029ba42c07f56bc/
User host address: 192.168.5.8
User: admin
Is authenticated: True
Authentication Type: ApplicationCookie
Thread account name: CONSCRT\administrator
Thread information:
Thread ID: 13
Thread account name: CONSCRT\administrator
Is impersonating: False
Stack trace: 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(IDictionary''2 headers, String key, String[] values)
at Microsoft.Owin.Infrastructure.ChunkingCookieManager.AppendResponseCookie(IOwinContext context, String key, String value, CookieOptions options)
at Microsoft.Owin.Security.Cookies.CookieAuthenticationHandler.d__f.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.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.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.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.AuthenticationMiddleware''1.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.Security.Infrastructure.AuthenticationMiddleware''1.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.Host.SystemWeb.IntegratedPipeline.IntegratedPipelineContextStage.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.Host.SystemWeb.IntegratedPipeline.IntegratedPipelineContext.d__2.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)
Custom event details:
I have been stuck on this issue for about a month now, and I would really appreciate any help, suggestions or ideas to find a fix for this.
Thank You!
Best Regards,
veggiedude

MongoDB C# driver timeout

I am trying to post some data into my remote mongodb instance which is a replica set, however I am getting a timeout exception saying that the host is not found? I have also read around and added ?connect=replicaSet at the end of the connection string but this did not help.
Here is my connection string
private MongoClient client = new MongoClient("mongodb://10.250.8.1:27017,10.250.8.2:27017,10.250.8.3:27017?connect=replicaSet");
and here is the exception that has been thrown:
{"A timeout occured after 30000ms selecting a server using CompositeServerSelector{ Selectors = WritableServerSelector, LatencyLimitingServerSelector{ AllowedLatencyRange = 00:00:00.0150000 } }. Client view of cluster state is { ClusterId : \"1\", ConnectionMode : \"ReplicaSet\", Type : \"ReplicaSet\", State : \"Disconnected\", Servers : [{ ServerId: \"{ ClusterId : 1, EndPoint : \"Unspecified/wsmongodb001:27017\" }\", EndPoint: \"Unspecified/wsmongodb001:27017\", State: \"Disconnected\", Type: \"Unknown\", HeartbeatException: \"MongoDB.Driver.MongoConnectionException: An exception occurred while opening a connection to the server. ---> System.Net.Sockets.SocketException: No such host is known\r\n at System.Net.Sockets.Socket.EndConnect(IAsyncResult asyncResult)\r\n at System.Threading.Tasks.TaskFactory`1.FromAsyncCoreLogic(IAsyncResult iar, Func`2 endFunction, Action`1 endAction, Task`1 promise, Boolean requiresSynchronization)\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.ConfiguredTaskAwaiter.GetResult()\r\n at MongoDB.Driver.Core.Connections.TcpStreamFactory.<ConnectAsync>d__7.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.ConfiguredTaskAwaiter.GetResult()\r\n at MongoDB.Driver.Core.Connections.TcpStreamFactory.<CreateStreamAsync>d__4.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 MongoDB.Driver.Core.Connections.BinaryConnection.<OpenHelperAsync>d__47.MoveNext()\r\n --- End of inner exception stack trace ---\r\n at MongoDB.Driver.Core.Connections.BinaryConnection.<OpenHelperAsync>d__47.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.ConfiguredTaskAwaiter.GetResult()\r\n at MongoDB.Driver.Core.Servers.ClusterableServer.<HeartbeatAsync>d__42.MoveNext()\" }, { ServerId: \"{ ClusterId : 1, EndPoint : \"Unspecified/wsmongodb002:27017\" }\", EndPoint: \"Unspecified/wsmongodb002:27017\", State: \"Disconnected\", Type: \"Unknown\", HeartbeatException: \"MongoDB.Driver.MongoConnectionException: An exception occurred while opening a connection to the server. ---> System.Net.Sockets.SocketException: No such host is known\r\n at System.Net.Sockets.Socket.EndConnect(IAsyncResult asyncResult)\r\n at System.Threading.Tasks.TaskFactory`1.FromAsyncCoreLogic(IAsyncResult iar, Func`2 endFunction, Action`1 endAction, Task`1 promise, Boolean requiresSynchronization)\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.ConfiguredTaskAwaiter.GetResult()\r\n at MongoDB.Driver.Core.Connections.TcpStreamFactory.<ConnectAsync>d__7.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.ConfiguredTaskAwaiter.GetResult()\r\n at MongoDB.Driver.Core.Connections.TcpStreamFactory.<CreateStreamAsync>d__4.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 MongoDB.Driver.Core.Connections.BinaryConnection.<OpenHelperAsync>d__47.MoveNext()\r\n --- End of inner exception stack trace ---\r\n at MongoDB.Driver.Core.Connections.BinaryConnection.<OpenHelperAsync>d__47.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.ConfiguredTaskAwaiter.GetResult()\r\n at MongoDB.Driver.Core.Servers.ClusterableServer.<HeartbeatAsync>d__42.MoveNext()\" }, { ServerId: \"{ ClusterId : 1, EndPoint : \"Unspecified/wsmongodb003:27017\" }\", EndPoint: \"Unspecified/wsmongodb003:27017\", State: \"Disconnected\", Type: \"Unknown\", HeartbeatException: \"MongoDB.Driver.MongoConnectionException: An exception occurred while opening a connection to the server. ---> System.Net.Sockets.SocketException: No such host is known\r\n at System.Net.Sockets.Socket.EndConnect(IAsyncResult asyncResult)\r\n at System.Threading.Tasks.TaskFactory`1.FromAsyncCoreLogic(IAsyncResult iar, Func`2 endFunction, Action`1 endAction, Task`1 promise, Boolean requiresSynchronization)\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.ConfiguredTaskAwaiter.GetResult()\r\n at MongoDB.Driver.Core.Connections.TcpStreamFactory.<ConnectAsync>d__7.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.ConfiguredTaskAwaiter.GetResult()\r\n at MongoDB.Driver.Core.Connections.TcpStreamFactory.<CreateStreamAsync>d__4.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 MongoDB.Driver.Core.Connections.BinaryConnection.<OpenHelperAsync>d__47.MoveNext()\r\n --- End of inner exception stack trace ---\r\n at MongoDB.Driver.Core.Connections.BinaryConnection.<OpenHelperAsync>d__47.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.ConfiguredTaskAwaiter.GetResult()\r\n at MongoDB.Driver.Core.Servers.ClusterableServer.<HeartbeatAsync>d__42.MoveNext()\" }] }."}

Here is the most important part of your error message:
Client view of cluster state is
{
ClusterId: "1",
ConnectionMode: "ReplicaSet",
Type: "ReplicaSet",
State: "Disconnected",
Servers: [{
ServerId: {
ClusterId: 1,
EndPoint: "Unspecified/wsmongodb001:27017"
},
EndPoint: "Unspecified/wsmongodb001:27017",
State: "Disconnected",
Type: "Unknown",
HeartbeatException: "[...] System.Net.Sockets.SocketException: No such host is known [...]"
}]
}
Note the "No such host is known" part of the field HeartbeatException.
Your replica set is configured with host names instead of IP addresses. Apparently, your client application cannot resolve wsmongodb001 to an IP address.
You will need to:
Make sure that your replica set is up and running. Manually connect to one of the servers from the mongo shell, run rs.status() and check that there is a primary and there are no errors.
Make sure that all domain names that are configured in your replica set via rs.conf() are accessible to your client app. If you are unsure if they are, just open a command prompt on the machine that runs the app and ping every domain name.