HttpClient检索所有标头 [英] HttpClient retrieve all headers

问题描述

目前，我正在研究API包装器。如果我发送错误的消费者密钥，服务器将返回状态为 403 Forbidden 。它还将传递自定义标头。如何实际检索这些自定义标头？

Currently, I am working on API wrapper. If I send a bad Consumer Key, the server will return Status as 403 Forbidden in the header. It will also pass custom headers. How do I actually retrieve these custom headers?

这是从服务器收到的响应。

This is the response receive from the server.

Cache-Control: private
Date: Wed,  01 May 2013 14:36:17 GMT
P3P: policyref="/w3c/p3p.xml",  CP="ALL CURa ADMa DEVa OUR IND UNI COM NAV INT STA PRE"
Server: Apache/2.2.23 (Amazon)
Status: 403 Forbidden
X-Error: Invalid consumer key.
X-Error-Code: 152
X-Powered-By: PHP/5.3.20
Connection: keep-alive

我需要检索 X-Error 和 X-Error-Code 。目前，我正在使用 HttpClient 类来处理请求。如果我在VS Studio 2012的Quick Watch下看到标题响应，我可以像这样找到它

I need to retrieve the X-Error and X-Error-Code. Currently, I am using HttpClient class to process the request. If I watch the headers respond under Quick Watch in VS Studio 2012, I could find it like this

（（System.Net.Http.Headers .HttpHeaders）（response.Headers））。headerStore [X-Error-Code]。ParsedValue

有没有其他方法可以这样做？

Is there any other way to do this?

编辑：
headerStore 无法通过代码访问，因为这是私有字段。我只能通过快速观察窗口访问它。

headerStore is not accessible thru code as this is private field. I only get access to it through the Quick Watch window.

这是我的请求代码段：

var response = await _httpClient.PostAsync("/v3/oauth/request", content);

推荐答案

好吧， HttpResponseMessage.Headers 返回 HttpResponseHeaders 参考，所以你应该可以使用 GetValues（）

Well, HttpResponseMessage.Headers returns an HttpResponseHeaders reference, so you should be able to use GetValues()

string error = response.Headers.GetValues("X-Error").FirstOrDefault();
string errorCode = response.Headers.GetValues("X-Error-Code").FirstOrDefault();

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