How to pass header in Azure endpoint..?

Question

I am using Azure API , URL getting below error please help on this issue. please share codesnip, how to change in web.config and endpoints.

The HTTP request is unauthorized with client authentication scheme 'Anonymous'. The authentication header received from the server was 'AzureApiManagementKey realm="https:/azure.azure-api.net/MethodName",name="Ocp-Apim-Subscription-Key",type="header"'.

can you add more details on what you are trying to do what is the client application and so on. — Aravind
I am using WSDL provided by API Management and facing this issue while invoking method inside that services. — Jitendra Shewale
What are you doing with the WSDL provided by API Management? How was that API created in APIM? Via WSDL? Where is the error you are receiving coming from? — Darrel Miller

Arul Arul · Accepted Answer · 2020-03-03T21:26:28

I know this is a very old question still, my answer would help someone faces the same issue.

The solution is to create a custom endpoint behavior where you add a custom message handler to the binding parameters.

In the custom message handler, please add your request headers. After this, use any of the binding technique (like basichttpsbinding or NetHttpsBinding) with security mode as "Transport" and MessageEncoding as "Text" for creating soap client object. Add custom endpoint behavior to the soap client.

public class CustomEndpointBehavior : IEndpointBehavior
{
    public void AddBindingParameters(ServiceEndpoint endpoint, BindingParameterCollection bindingParameters)
    {
        bindingParameters.Add(new Func<HttpClientHandler, HttpMessageHandler>(x =>
        {
            return new CustomMessageHandler(x);
        }));
    }

    public void ApplyClientBehavior(ServiceEndpoint endpoint, ClientRuntime clientRuntime) { }

    public void ApplyDispatchBehavior(ServiceEndpoint endpoint, EndpointDispatcher endpointDispatcher) { }

    public void Validate(ServiceEndpoint endpoint) { }
}

public class CustomMessageHandler : DelegatingHandler
{
    public CustomMessageHandler(HttpClientHandler handler)
    {
        InnerHandler = handler;
    }

    protected override Task<HttpResponseMessage> SendAsync(HttpRequestMessage request, System.Threading.CancellationToken cancellationToken)
    {
        request.Headers.Add("xxxx", "abcde");
        return base.SendAsync(request, cancellationToken);
    }
}

The console app to consume the service.

static async Task Main(string[] args)
{
        var client = GetSOAPClient();

        try
        {
            var result = await client.MyOperation().ConfigureAwait(false);
            if(result.Body != null && result.Body.status == "Success")
            {
                Console.WriteLine(result.Body.myValue);
            }
        }
        catch (Exception ex)
        {
            Console.WriteLine(ex?.Message);
        }

        Console.ReadKey();
    }

    static MyServiceClient GetSOAPClient()
    {
        NetHttpsBinding binding = new NetHttpsBinding();
        binding.Security.Mode = BasicHttpsSecurityMode.Transport;
        binding.MessageEncoding = NetHttpMessageEncoding.Text;
        EndpointAddress ea = new EndpointAddress(new Uri("https://myazureurl"));

        var client = new MyServiceClient(binding, ea);
        client.Endpoint.EndpointBehaviors.Add(new CustomEndpointBehavior());

        return client;
    }
}

How to pass header in Azure endpoint..?

2 Answers