Setup proxy to invoke WCF service reference

I added a wcf service reference to external soap web service. It's all good until i publish the solution to an internal machine which need to setup a proxy (with Basic auth user/password) to be able to invoke WS.

In .net framework, it was just add a section config to setup the proxy. I need the same in a .net 6 project.. I already tried to create a CustomBinding object to wrap BasicHttpBinding, in order to set the proxy but without success... Anybody can give me some tips to achieve that? Do you have any sample with this use case?

Thanks a lot.

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ID: 0e89651a-5ad9-c3f9-146f-8d87b87d9e11
Version Independent ID: 85c0e55f-abc0-3b2d-409a-06042b1f3ebb
Content: Add WCF Web Service Reference - .NET
Content Source: docs/core/additional-tools/wcf-web-service-reference-guide.md
Product: dotnet-fundamentals
GitHub Login: @dasetser
Microsoft Alias: dotnetcontent

My code to setup a http proxy in WCF client (without success).

    EndpointAddress endpoint =
        new System.ServiceModel.EndpointAddress("https://.../service");

    var binding = new BasicHttpBinding();
    binding.MaxBufferSize = int.MaxValue;
    binding.ReaderQuotas = System.Xml.XmlDictionaryReaderQuotas.Max;
    binding.MaxReceivedMessageSize = int.MaxValue;
    binding.AllowCookies = true;
    binding.Security.Mode = BasicHttpSecurityMode.Transport;

    // Create customBinding to send the request through proxy which requires user and password (basic auth)
    var customBinding = new CustomBinding(binding);    
    var htbe = customBinding.Elements.Find<HttpsTransportBindingElement>(); // HTTPS                   

    htbe.ProxyAuthenticationScheme = System.Net.AuthenticationSchemes.Basic;
    htbe.UseDefaultWebProxy = false;
    //htbe.ProxyAddress = new Uri(string.Format("http://{0}:{1}", settings.Address, settings.Port));
    htbe.BypassProxyOnLocal = true;

    WebProxy proxy = new WebProxy(new Uri(string.Format("http://{0}:{1}", settings.Address, settings.Port)), true, null);
    proxy.Credentials = new NetworkCredential(settings.Username, settings.Password);
    htbe.Proxy = proxy;

    smsClient = new SubmissionManagerClient(customBinding, endpoint);

    //smsClient.ClientCredentials.UserName.UserName = settings.Username;
    //smsClient.ClientCredentials.UserName.Password = settings.Password;

It seems the proxy is ignored.. I receive the following exception:

System.ServiceModel.CommunicationException: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond. (smsexpress.cloud.altice-empresas.pt:443)
 ---> System.Net.Http.HttpRequestException: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond.

dotnet / docs

Setup proxy to invoke WCF service reference #29231

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