xml - 使用 WebHttpBinding 设置为基本身份验证的 WCF 进行 POX REST 调用时双重请求

Question

在将 WebHttpBinding 设置为基本身份验证 (HttpClientCredentialType.Basic) 的情况下使用 WCF 进行 POX REST 调用时出现问题

不是从具有 HTTP header 中指定的“Authorization: Basic”的客户端调用一次，而是进行两次调用。第一次调用完全没有身份验证，服务响应 401 Unauthorized 错误，第二次调用使用正确的身份验证信息。

这似乎是由 WCF 服务处理的，完全没有问题。调用第三方服务显然会产生问题，因为它们会立即响应错误。

服务代码:

[ServiceContract]
public interface IService
{
    [OperationContract]
    [WebInvoke(BodyStyle = WebMessageBodyStyle.Bare,
        RequestFormat = WebMessageFormat.Xml,
        UriTemplate = "")]
    Message SendData(Message message);

}

public class Service : IService
{
    public Message SendData(Message message)
    {           return Message.CreateMessage(MessageVersion.None, String.Empty, "test");
    }
}

客户代码:

public class Client: WebChannelFactory<IService>, IService
{
    public Client(Uri baseUri, string userName, string password)
        : base(CreateBinding(),
               baseUri)
    {
        Credentials.UserName.UserName = userName;
        Credentials.UserName.Password = password;
    }

    public Message SendData(Message requestMessage)
    {
        var channel = CreateChannel();
        Message responseMessage = channel.SendData(requestMessage);
        return responseMessage;
    }

    private static Binding CreateBinding()
    {
        var binding = new WebHttpBinding();
        binding.Security.Mode = WebHttpSecurityMode.TransportCredentialOnly;
        binding.Security.Transport.ClientCredentialType = HttpClientCredentialType.Basic;
        return binding;
    }

}

使用 TcpTrace，我看到这些背靠背的请求:

POST / HTTP/1.1  
Content-Type: application/xml; charset=utf-8  
VsDebuggerCausalityData:   uIDPo2lH6p+lUOdFmrqDKGWYeQkAAAAA7+Y4QR6wNUWZmwCaasMx7xrfcJZxph9NocstwCh8NQsACQAA  
Host: localhost:9090  
Content-Length: 89  
Expect: 100-continue  
Connection: Keep-Alive  

<string xmlns="http://schemas.microsoft.com/2003/10/Serialization/">test request</string>  

POST / HTTP/1.1  
Content-Type: application/xml; charset=utf-8  
VsDebuggerCausalityData: uIDPo2lH6p+lUOdFmrqDKGWYeQkAAAAA7+Y4QR6wNUWZmwCaasMx7xrfcJZxph9NocstwCh8NQsACQAA  
Authorization: Basic dGVzdDp0ZXN0  
Host: localhost:9090  
Content-Length: 89  
Expect: 100-continue  

<string xmlns="http://schemas.microsoft.com/2003/10/Serialization/">test request</string> 

注意只有第二次调用包含:Authorization: Basic dGVzdDp0ZXN0如何停止第一个请求(未经授权)？

可在此处下载带有 TcpTrace 实用程序的示例解决方案:

WCF-BasicAuthenticationIssue.zip

Answer 1

所以根据 Remus 的回答，这是我的解决方法

        public Message SendData(Message requestMessage)
    {
        var channel = CreateChannel();
        Message responseMessage;
        using (new OperationContextScope((IClientChannel)channel))
        {
            WebOperationContext.Current.OutgoingRequest
                .Headers[HttpRequestHeader.Authorization] = "Basic "
                + Convert.ToBase64String(Encoding.ASCII.GetBytes(
                Credentials.UserName.UserName + ":" + Credentials.UserName.Password));
            responseMessage = channel.SendData(requestMessage); 
        }
        return responseMessage;
    }

我只是强制第一个请求使用基本授权