从请求上下文添加和检索数据

Question

我正在尝试将api密钥附加到OperationContext传出消息头,如下所示:

    public static void AddApikeyToHeader(string apikey, IContextChannel channel, string address)
    {
        using (OperationContextScope scope = new OperationContextScope(channel))
        {
            MessageHeader header = MessageHeader.CreateHeader("apikey", address, apikey);
            OperationContext.Current.OutgoingMessageHeaders.Add(header);

        }
    }

但后来我不知道如何检索服务器端的标头.我正在使用服务授权管理器,我得到当前的操作上下文并尝试检索这样的标题:

    public string GetApiKey(OperationContext operationContext)
    {
        var request = operationContext.RequestContext.RequestMessage;

        var prop = (HttpRequestMessageProperty)request.Properties[HttpRequestMessageProperty.Name];

        return prop.Headers["apikey"];
    }

但那里没有附加的apikey标题.另外,在我检查operationContext的时候调试我似乎无法在任何地方看到我的apikey头.谁能看到我哪里出错了？

Answer 1

您可以通过以下方式添加自定义标头:

using (ChannelFactory<IMyServiceChannel> factory = 
       new ChannelFactory<IMyServiceChannel>(new NetTcpBinding()))
      {
       using (IMyServiceChannel proxy = factory.CreateChannel(...))
       {
          using ( OperationContextScope scope = new OperationContextScope(proxy) )
          {
             Guid apiKey = Guid.NewGuid();
             MessageHeader<Guid> mhg = new MessageHeader<Guid>(apiKey);
             MessageHeader untyped = mhg.GetUntypedHeader("apiKey", "ns");
             OperationContext.Current.OutgoingMessageHeaders.Add(untyped);

             proxy.DoOperation(...);
          }
       }                    
    }

而服务方面,您可以获得如下标题:

Guid apiKey = 
OperationContext.Current.IncomingMessageHeaders.GetHeader<Guid>("apiKey", "ns");