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copied!<p>I've also had this problem... When you define NetworkCredentials it does not get sent in the HTTP header, and thus no 'Authorization' header...</p> <p>What I did and it worked for me was:</p> <p>I created a class that implements IClientMessageInspector and implement the BeforeSendRequest method:</p> <pre><code>using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.ServiceModel.Dispatcher; using System.ServiceModel.Channels; namespace BasicAuth { public sealed class MessageHttpHeaderInspector : IClientMessageInspector { private string userName; private string password; #region Constructor public MessageHttpHeaderInspector(string userName, string password) { this.userName = userName; this.password = password; } #endregion #region IClientMessageInspector Members public void AfterReceiveReply(ref Message reply, object correlationState) { //throw new NotImplementedException(); } public object BeforeSendRequest(ref Message request, System.ServiceModel.IClientChannel channel) { HttpRequestMessageProperty httpRequest; if (request.Properties.ContainsKey(HttpRequestMessageProperty.Name)) { httpRequest = request.Properties[HttpRequestMessageProperty.Name] as HttpRequestMessageProperty; } else { httpRequest = new HttpRequestMessageProperty(); request.Properties.Add(HttpRequestMessageProperty.Name, httpRequest); } if (httpRequest != null) { string credentials = this.CreateBasicAuthenticationCredentials(this.userName, this.password); httpRequest.Headers.Add(System.Net.HttpRequestHeader.Authorization, credentials); } return request; } #endregion #region Private Worker Methods private string CreateBasicAuthenticationCredentials(string userName, string password) { string returnValue = string.Empty; string base64UsernamePassword = Convert.ToBase64String(Encoding.ASCII.GetBytes(String.Format("{0}:{1}", userName, password))); returnValue = String.Format("Basic {0}", base64UsernamePassword); return returnValue; } #endregion } } </code></pre> <p>Then I created a class that implements IEndpointBehavior and implements the ApplyClientBehavior method:</p> <pre><code>using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.ServiceModel; using System.ServiceModel.Description; using System.ServiceModel.Dispatcher; namespace BasicAuth { public sealed class CustomEndpointCallBehavior : IEndpointBehavior { private string userName; private string password; #region Constructor public CustomEndpointCallBehavior(string userName, string password) { this.userName = userName; this.password = password; } #endregion #region IEndpointBehavior Members public void AddBindingParameters(ServiceEndpoint endpoint, System.ServiceModel.Channels.BindingParameterCollection bindingParameters) { //throw new NotImplementedException(); } public void ApplyClientBehavior(ServiceEndpoint endpoint, ClientRuntime clientRuntime) { clientRuntime.MessageInspectors.Add(new MessageHttpHeaderInspector(this.userName, this.password)); } public void ApplyDispatchBehavior(ServiceEndpoint endpoint, EndpointDispatcher endpointDispatcher) { //throw new NotImplementedException(); } public void Validate(ServiceEndpoint endpoint) { //throw new NotImplementedException(); } #endregion } } </code></pre> <p>Then you need to apply this behavior to the proxy:</p> <pre><code>mywebservice.Endpoint.Behaviors.Add(new CustomEndpointCallBehavior("User1", "Pass1")); </code></pre> <p>Have a look at the following:</p> <ul> <li><a href="http://dkochnev.blogspot.com/2011/05/framework-40-wcf-basic-authentication.html" rel="nofollow">http://dkochnev.blogspot.com/2011/05/framework-40-wcf-basic-authentication.html</a></li> <li><a href="http://msdn.microsoft.com/en-us/library/system.servicemodel.description.iendpointbehavior.aspx" rel="nofollow">http://msdn.microsoft.com/en-us/library/system.servicemodel.description.iendpointbehavior.aspx</a></li> <li><a href="http://msdn.microsoft.com/en-us/library/system.servicemodel.dispatcher.iclientmessageinspector.aspx" rel="nofollow">http://msdn.microsoft.com/en-us/library/system.servicemodel.dispatcher.iclientmessageinspector.aspx</a></li> </ul> <p>This should do the trick... Hope it works for you!</p>

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