WCF REST deployment Error: "Resource Does not exist" - wcf

Question

I am trying to access http://localhost/tempservicehost/tempservice.svc and I am getting the following error:
Error Description: 'Resource does not
exist'
This may be because an invalid URI or
HTTP method was specified. Please see
the service help page for constructing
valid requests to the service.
The funny thing is that http://localhost/tempservicehost/tempservice.svc/help is working fine. Not only that, all my endpoints are working fine.
I am using IIS 7.5 (Win 2008 R2). Application developed using .NET 4.0
Post Updated (following is the code):
<ServiceContract()>
Public Interface ITestSvc
<OperationContract()>
<Description("")>
<WebInvoke(Bodystyle:=WebMessageBodyStyle.Bare,
Method:="POST",
UriTemplate:="GetCodes")>
Function GetCodes(ByVal oReq As ReqGetCodes) As RespGetCodes
End Interface
Public Class TestSvc
Implements ITestSvc
Public Function GetCodes(ByVal oReq As ReqGetCodes) As RespGetCodes Implements ITestSvc.GetCodes
Dim o As New RespGetCodes
Dim lstGetCodes = New List(Of ClassGetCodes) From {
New ClassGetCodes With {.App_Code = "a1", .SystemFlag = True},
New ClassGetCodes With {.App_Code = "a2", .SystemFlag = False},
New ClassGetCodes With {.App_Code = "a3", .SystemFlag = True},
New ClassGetCodes With {.App_Code = "a4", .SystemFlag = True},
New ClassGetCodes With {.App_Code = "a5", .SystemFlag = False}
}
o.GetCodesArray = lstGetCodes.ToArray
Return o
End Function
End Class
Public Class TestWebHttpBehavior
Inherits WebHttpBehavior
Protected Overrides Sub AddServerErrorHandlers(ByVal endpoint As System.ServiceModel.Description.ServiceEndpoint, ByVal endpointDispatcher As System.ServiceModel.Dispatcher.EndpointDispatcher)
endpointDispatcher.ChannelDispatcher.ErrorHandlers.Clear()
endpointDispatcher.ChannelDispatcher.ErrorHandlers.Add(New TestErrorHandler)
End Sub
End Class
Public Class TestWcfSvcHostFactory
Inherits ServiceHostFactory
Protected Overrides Function CreateServiceHost(ByVal serviceType As Type, ByVal baseAddresses As Uri()) As ServiceHost
Dim result As New WebServiceHost2(serviceType, True, baseAddresses)
Dim sEnableBasicAuth As String = System.Configuration.ConfigurationManager.AppSettings.Get("EnableBasicAuthentication")
If String.IsNullOrEmpty(sEnableBasicAuth) OrElse String.Compare(sEnableBasicAuth, "false", True) <> 0 Then
result.Interceptors.Add(New TestRequestInterceptor(System.Web.Security.Membership.Provider, "Personify Authentication"))
End If
result.Authorization.PrincipalPermissionMode = PrincipalPermissionMode.None
Dim bahavior As New TestWebHttpBehavior With {.AutomaticFormatSelectionEnabled = True}
result.Description.Endpoints(0).Behaviors.Add(bahavior)
Return result
End Function
End Class
Public Class TestRequestInterceptor
Inherits RequestInterceptor
Private m_provider As MembershipProvider
Private m_realm As String
Public Sub New(ByVal provider As MembershipProvider, ByVal realm As String)
MyBase.New(False)
Me.m_provider = provider
Me.m_realm = realm
End Sub
Protected ReadOnly Property Realm() As String
Get
Return m_realm
End Get
End Property
Protected ReadOnly Property Provider() As MembershipProvider
Get
Return m_provider
End Get
End Property
Public Overrides Sub ProcessRequest(ByRef requestContext As RequestContext)
Dim credentials As String() = ExtractCredentials(requestContext.RequestMessage)
If credentials.Length > 0 AndAlso AuthenticateUser(credentials(0), credentials(1)) Then
InitializeSecurityContext(requestContext.RequestMessage, credentials(0))
Else
Dim reply As Message = Message.CreateMessage(MessageVersion.None, Nothing)
Dim responseProperty As New HttpResponseMessageProperty() With {.StatusCode = HttpStatusCode.Unauthorized}
responseProperty.Headers.Add("WWW-Authenticate", String.Format("Basic realm=""{0}""", Realm))
reply.Properties(HttpResponseMessageProperty.Name) = responseProperty
requestContext.Reply(reply)
requestContext = Nothing
End If
End Sub
Private Function AuthenticateUser(ByVal username As String, ByVal password As String) As Boolean
If Provider.ValidateUser(username, password) Then
Return True
End If
Return False
End Function
Private Function ExtractCredentials(ByVal requestMessage As Message) As String()
Dim request As HttpRequestMessageProperty = DirectCast(requestMessage.Properties(HttpRequestMessageProperty.Name), HttpRequestMessageProperty)
Dim authHeader As String = request.Headers("Authorization")
If authHeader IsNot Nothing AndAlso authHeader.StartsWith("Basic") Then
Dim encodedUserPass As String = authHeader.Substring(6).Trim()
Dim encoding__1 As Encoding = Encoding.GetEncoding("iso-8859-1")
Dim userPass As String = encoding__1.GetString(Convert.FromBase64String(encodedUserPass))
Dim separator As Integer = userPass.IndexOf(":"c)
Dim credentials As String() = New String(1) {}
credentials(0) = userPass.Substring(0, separator)
credentials(1) = userPass.Substring(separator + 1)
Return credentials
End If
Return New String() {}
End Function
Private Sub InitializeSecurityContext(ByVal request As Message, ByVal username As String)
Dim principal As New GenericPrincipal(New GenericIdentity(username), New String() {})
Dim policies As New List(Of IAuthorizationPolicy)()
policies.Add(New PrincipalAuthorizationPolicy(principal))
Dim securityContext As New ServiceSecurityContext(policies.AsReadOnly())
If request.Properties.Security IsNot Nothing Then
request.Properties.Security.ServiceSecurityContext = securityContext
Else
request.Properties.Security = New SecurityMessageProperty() With { _
.ServiceSecurityContext = securityContext _
}
End If
End Sub
Private Class PrincipalAuthorizationPolicy
Implements IAuthorizationPolicy
Private m_id As String = Guid.NewGuid().ToString()
Private user As IPrincipal
Public Sub New(ByVal user As IPrincipal)
Me.user = user
End Sub
Public ReadOnly Property Id As String Implements System.IdentityModel.Policy.IAuthorizationComponent.Id
Get
Return Me.m_id
End Get
End Property
Public Function Evaluate(ByVal evaluationContext As System.IdentityModel.Policy.EvaluationContext, ByRef state As Object) As Boolean Implements System.IdentityModel.Policy.IAuthorizationPolicy.Evaluate
evaluationContext.AddClaimSet(Me, New DefaultClaimSet(Claim.CreateNameClaim(user.Identity.Name)))
evaluationContext.Properties("Identities") = New List(Of IIdentity)(New IIdentity() {user.Identity})
evaluationContext.Properties("Principal") = user
Return True
End Function
Public ReadOnly Property Issuer As System.IdentityModel.Claims.ClaimSet Implements System.IdentityModel.Policy.IAuthorizationPolicy.Issuer
Get
Return ClaimSet.System
End Get
End Property
End Class
End Class
The config is here:
<system.serviceModel>
<services>
<service behaviorConfiguration="TestWcfServiceBehavior"
name="TestServiceLib.TestSvc">
<endpoint address="" binding="webHttpBinding" behaviorConfiguration="EPrestBehavior"
name="EPrest" contract="TestServiceLib.ITestSvc" />
<endpoint address="mex" binding="mexHttpBinding" name="EPmex"
contract="IMetadataExchange" />
</service>
</services>
<behaviors>
<endpointBehaviors>
<behavior name="EPrestBehavior">
<webHttp />
</behavior>
</endpointBehaviors>
<serviceBehaviors>
<behavior name="TestWcfServiceBehavior">
<serviceMetadata httpGetEnabled="true" />
<serviceDebug includeExceptionDetailInFaults="true" />
</behavior>
</serviceBehaviors>
</behaviors>
</system.serviceModel>

Answer 1

I Had a similar issue,
I found that if i navigated to an actual resource it was fine.
for example
http://localhost/tempservicehost/tempservice.svc/test/
assuming you have the following method as well
[OperationContract]
[WebGet(UriTemplate = "/test/")]
public Test TestMethod()
{
return new Test("Hello world");
}
what has happened here is that the standard 404 error that is normally returned has not been rendered the way you are expecting it to. (usually you get a blue header and a line saying service end point or similar)
If you want to customise your errors there is a question Custom Error Handling message for Custom WebServiceHost
That explains how to pick up error codes on the way through and modify the return.