在现有WCF SOAP服务中添加Http Header无效

Question

我想要一个HTTP头到我的WCF SOAP服务.我的最终目标是通过此HTTP标头发送API密钥.

以下是我的代码:

[ServiceBehavior(Namespace = "http://****.com/**/1.1")]
public class MyWcfSvc : IMyVerify
{
    const int MaxResponseSize = 0xffff; // 64K max size - Normally it will be MUCH smaller than this

    private static readonly NLogLogger Logger;

    static MyWcfSvc()
    {
        Logger = new NLogLogger();
        // Add an HTTP Header to an outgoing request 
        HttpRequestMessageProperty requestMessage = new HttpRequestMessageProperty();
        requestMessage.Headers["User-Auth"] = "MyHttpHeaderValue";
        OperationContext.Current.OutgoingMessageProperties[HttpRequestMessageProperty.Name] = requestMessage;
    }
}

我没有User-Auth在HTTP请求标头下看到标头.

我也尝试过另一种方式.

public AnalyzeResponse Analyze(AnalyzeRequest analyzeRequest)
    {
        HttpRequestMessageProperty requestMessage = new HttpRequestMessageProperty();
        requestMessage.Headers["User-Auth"] = "MyHttpHeaderValue";
        OperationContext.Current.OutgoingMessageProperties[HttpRequestMessageProperty.Name] = requestMessage;
.
.
. Rest of the service implementation
.
.
.
}

但是,我仍然没有看到任何带有请求消息的HTTP头信息.我正在使用SOAP UI发送请求并查看响应.

我该怎么办呢？我想更改与课程相关的服务吗？或者我需要对web.config文件进行一些更改？

Answer 1

要添加SOAP标头，请使用以下代码客户端：

using (OperationContextScope scope = new OperationContextScope((IContextChannel)channel))
{
    MessageHeader<string> header = new MessageHeader<string>("MyHttpHeaderValue");
    var untyped = header.GetUntypedHeader("User-Auth", ns);
    OperationContext.Current.OutgoingMessageHeaders.Add(untyped);

    // now make the WCF call within this using block
}

然后，在服务器端，使用：

MessageHeaders headers = OperationContext.Current.IncomingMessageHeaders;
string identity = headers.GetHeader<string>("User-Auth", ns);

注意 ns是标头XML元素的名称空间URI。

要添加Http标头：

// Add a HTTP Header to an outgoing request 
HttpRequestMessageProperty requestMessage = new HttpRequestMessageProperty();
requestMessage.Headers["MyHttpHeader"] = "MyHttpHeaderValue";
OperationContext.Current.OutgoingMessageProperties[HttpRequestMessageProperty.Name] = requestMessage;

并抓住它在服务器端

IncomingWebRequestContext request = WebOperationContext.Current.IncomingRequest; 
WebHeaderCollection headers = request.Headers; 
Console.WriteLine(request.Method + " " + request.UriTemplateMatch.RequestUri.AbsolutePath); 

foreach (string headerName in headers.AllKeys)
{ 
    Console.WriteLine(headerName + ": " + headers[headerName]); 
}

Answer 2

如果您尝试向客户端请求添加 HTTP 请求标头，可以按照以下步骤操作。

创建客户端消息检查器。例如：

public class CustomInspector : IClientMessageInspector
{
    public void AfterReceiveReply(ref Message reply, object correlationState)
    {
    }

    public object BeforeSendRequest(ref Message request, IClientChannel channel)
    {
        HttpRequestMessageProperty reqProps = request.Properties[HttpRequestMessageProperty.Name] as HttpRequestMessageProperty;
        if(reqProps == null)
        {
            reqProps = new HttpRequestMessageProperty();
        }

        reqProps.Headers.Add("Custom-Header", "abcd");
        request.Properties[HttpRequestMessageProperty.Name] = reqProps;

        return null;
    }
}

创建端点行为来加载此检查器：

public class CustomBehavior : IEndpointBehavior
{
    public void AddBindingParameters(ServiceEndpoint endpoint, BindingParameterCollection bindingParameters)
    {
    }

    public void ApplyClientBehavior(ServiceEndpoint endpoint, ClientRuntime clientRuntime)
    {
        clientRuntime.ClientMessageInspectors.Add(new CustomInspector());
    }

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

    public void Validate(ServiceEndpoint endpoint)
    {
    }
}

最后将此行为添加到端点。

class Program
{
    static void Main(string[] args)
    {
        ChannelFactory<ICalculator> factory = new ChannelFactory<ICalculator>("BasicHttpsBinding_ICalculator");
        factory.Endpoint.EndpointBehaviors.Add(new CustomBehavior());
        var client = factory.CreateChannel();

        var number = client.Add(1, 2);

        Console.WriteLine(number.ToString());
    }
}

上面的例子在我这边有效。我可以用 Fiddler 看到请求头。