Getting HttpListenerException running in memory with no HTTP server

[Sean Kearon]

I had a problem with some of my tests that resulted in registering my store twice.  I'm using the store like this:

  new EmbeddableDocumentStore {RunInMemory = true, UseEmbeddedHttpServer = false}

As I was registering the store twice, I was getting a System.Net.HttpListenerException: "Failed to listen on prefix 'http://+:8080/' because it conflicts with an existing registration on the machine."

Should the HTTP listener be involved at all seeing as this is fully embedded with the HTTP server off?  

[Oren Eini (Ayende Rahien)]

It should not, can you provide me with the full stack trace?

[Sean Kearon]

SetUp : Autofac.Core.DependencyResolutionException : An exception was thrown while executing a resolve operation. See the InnerException for details.
----> System.Net.HttpListenerException : Failed to listen on prefix 'http://+:8080/' because it conflicts with an existing registration on the machine.

at Autofac.Core.Resolving.ResolveOperation.Execute(IComponentRegistration registration, IEnumerable`1 parameters)
at Autofac.Core.Lifetime.LifetimeScope.ResolveComponent(IComponentRegistration registration, IEnumerable`1 parameters)
at Autofac.ResolutionExtensions.ResolveService(IComponentContext context, Service service, IEnumerable`1 parameters)
at Autofac.ResolutionExtensions.Resolve(IComponentContext context, IEnumerable`1 parameters)
at Atlantic.Test.Common.InMemoryFixture.SetUp() in InMemoryFixture.cs: line 37
at Pirform.Domain.Fixture.tree_changed.Setup() in tree_changed.cs: line 25
--HttpListenerException
at System.Net.HttpListener.AddAllPrefixes()
at System.Net.HttpListener.Start()
at Raven.Database.Server.HttpServer.StartListening() in c:\Builds\RavenDB-Stable\Raven.Database\Server\HttpServer.cs: line 208
at Raven.Client.Embedded.EmbeddableDocumentStore.InitializeInternal() in c:\Builds\RavenDB-Stable\Raven.Client.Embedded\EmbeddableDocumentStore.cs: line 148
at Raven.Client.Document.DocumentStore.Initialize() in c:\Builds\RavenDB-Stable\Raven.Client.Lightweight\Document\DocumentStore.cs: line 392
at MyApp.Raven.EmbeddableDocumentStoreInitialiser.Initialise(DocumentStore documentStore) in EmbeddableDocumentStoreInitialiser.cs: line 77
at Atlantic.Test.Common.InMemoryFixture.<SetUp>b__1(IComponentContext x) in InMemoryFixture.cs: line 41
at Autofac.Builder.RegistrationBuilder.<>c__DisplayClass1`1.<ForDelegate>b__0(IComponentContext c, IEnumerable`1 p)
at Autofac.Core.Activators.Delegate.DelegateActivator.ActivateInstance(IComponentContext context, IEnumerable`1 parameters)
at Autofac.Core.Resolving.InstanceLookup.Activate(IEnumerable`1 parameters)
at Autofac.Core.Lifetime.LifetimeScope.GetOrCreateAndShare(Guid id, Func`1 creator)
at Autofac.Core.Resolving.InstanceLookup.Execute()
at Autofac.Core.Resolving.ResolveOperation.GetOrCreateInstance(ISharingLifetimeScope currentOperationScope, IComponentRegistration registration, IEnumerable`1 parameters)
at Autofac.Core.Resolving.ResolveOperation.Execute(IComponentRegistration registration, IEnumerable`1 parameters) 

[Oren Eini (Ayende Rahien)]

This code works:

using(var d1 = new EmbeddableDocumentStore

{

RunInMemory = true,

UseEmbeddedHttpServer = false

}.Initialize())

using (var d2 = new EmbeddableDocumentStore

{

RunInMemory = true,

UseEmbeddedHttpServer = false

}.Initialize())

{

[Sean Kearon]

Bad me - I have a configuration class that was turning the embedded http server back on!  

I'm sure there's an emoticon for embarrased...

[Justin A]

Actually Sean, lets go even better :

tehehehehehehehehehehehehe

[Sean Kearon]

Lol - yeah, that about sums it up :)