Hi,
I'm running my app over Azure. Sometimes, I'm getting a server error popup message when connecting to a tenant or on first host connection. Looking at logs, I've remarked two exceptions that are fired very often (each time server starts at least). Here they are
FATAL 2018-03-26 07:01:03,366 [7 ] soft.AspNetCore.Hosting.Internal.WebHost - Hosting startup assembly exception
System.InvalidOperationException: Startup assembly Microsoft.AspNetCore.AzureAppServices.HostingStartup failed to execute. See the inner exception for more details. ---> System.IO.FileNotFoundException: Could not load file or assembly 'Microsoft.AspNetCore.AzureAppServices.HostingStartup' or one of its dependencies. The system cannot find the file specified.
at System.Reflection.RuntimeAssembly._nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, RuntimeAssembly locationHint, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks)
at System.Reflection.RuntimeAssembly.nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, RuntimeAssembly locationHint, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks)
at System.Reflection.RuntimeAssembly.InternalLoadAssemblyName(AssemblyName assemblyRef, Evidence assemblySecurity, RuntimeAssembly reqAssembly, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks)
at System.Reflection.Assembly.Load(AssemblyName assemblyRef)
at Microsoft.AspNetCore.Hosting.WebHostBuilder.BuildCommonServices(AggregateException& hostingStartupErrors)
--- End of inner exception stack trace ---
INFO 2018-03-26 07:15:09,011 [14 ] Microsoft.AspNetCore.Server.Kestrel - Connection id "0HLCISULQQUV1" bad request data: "Invalid request line: '415e-aa28-7c00bb172254\x0D\x0A'"
Microsoft.AspNetCore.Server.Kestrel.Core.BadHttpRequestException: Invalid request line: '415e-aa28-7c00bb172254\x0D\x0A'
at Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http.HttpParser`1.GetUnknownMethod(Byte* data, Int32 length, Int32& methodLength)
at Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http.HttpParser`1.ParseRequestLine(TRequestHandler handler, Byte* data, Int32 length)
at Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http.HttpParser`1.ParseRequestLine(TRequestHandler handler, ReadableBuffer buffer, ReadCursor& consumed, ReadCursor& examined)
at Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http.Frame.TakeStartLine(ReadableBuffer buffer, ReadCursor& consumed, ReadCursor& examined)
at Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http.Frame.ParseRequest(ReadableBuffer buffer, ReadCursor& consumed, ReadCursor& examined)
at Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http.Frame`1.<ProcessRequestsAsync>d__2.MoveNext()
I've googled exception BadHttpRequestException. Both exceptions seems to be linked with System.IO
Do you know how to fix this ?
3 Answer(s)
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Hi,
Is your app .NET 4.6.1 or .NET Core ? I have found a similar discussion here <a class="postlink" href="https://github.com/aspnet/Hosting/issues/1246">https://github.com/aspnet/Hosting/issues/1246</a>. There might be a workaround for if you are using .NET 4.6.1.
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Hi,
I've done some updates on my project. For the Kestrel BadHttpRequestException, I simply update nuget packages (including aspnetcore kestrel). No more exceptions of this kind in LOG file.
For the Microsoft.AspNetCore.AzureAppServices.HostingStartup, I've applied the workaround explained here [https://github.com/aspnet/Hosting/issues/1246]) but I still have same exception :
FATAL 2018-04-04 08:16:14,306 [6 ] soft.AspNetCore.Hosting.Internal.WebHost - Hosting startup assembly exception System.InvalidOperationException: Startup assembly Microsoft.AspNetCore.AzureKeyVault.HostingStartup failed to execute. See the inner exception for more details. ---> System.IO.FileNotFoundException: Could not load file or assembly 'Microsoft.AspNetCore.AzureKeyVault.HostingStartup' or one of its dependencies. The system cannot find the file specified. at System.Reflection.RuntimeAssembly._nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, RuntimeAssembly locationHint, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks) at System.Reflection.RuntimeAssembly.nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, RuntimeAssembly locationHint, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks) at System.Reflection.RuntimeAssembly.InternalLoadAssemblyName(AssemblyName assemblyRef, Evidence assemblySecurity, RuntimeAssembly reqAssembly, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks) at System.Reflection.Assembly.Load(AssemblyName assemblyRef) at Microsoft.AspNetCore.Hosting.WebHostBuilder.BuildCommonServices(AggregateException& hostingStartupErrors) --- End of inner exception stack trace ---This is not a blocking error and is not visible by users. But it is still better to have no errors at all ;)
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@Ricavir Thank you for sharing your solution.
