HttpClient 身份验证标头未发送 [英] HttpClient authentication header not getting sent

问题描述

我正在尝试将 HttpClient 用于需要基本 HTTP 身份验证的第三方服务.我正在使用 AuthenticationHeaderValue.到目前为止，这是我想出的:

I'm trying to use an HttpClient for a third-party service that requires basic HTTP authentication. I am using the AuthenticationHeaderValue. Here is what I've come up with so far:

HttpRequestMessage<RequestType> request = 
    new HttpRequestMessage<RequestType>(
        new RequestType("third-party-vendor-action"),
        MediaTypeHeaderValue.Parse("application/xml"));
request.Headers.Authorization = new AuthenticationHeaderValue(
    "Basic", Convert.ToBase64String(System.Text.ASCIIEncoding.ASCII.GetBytes(
        string.Format("{0}:{1}", "username", "password"))));

var task = client.PostAsync(Uri, request.Content);
ResponseType response = task.ContinueWith(
    t =>
    {
        return t.Result.Content.ReadAsAsync<ResponseType>();
    }).Unwrap().Result;

看起来 POST 操作工作正常，但我没有取回我期望的数据.通过反复试验，最终使用 Fiddler 嗅探原始流量，我发现没有发送授权标头.

It looks like the POST action works fine, but I don't get back the data I expect. Through some trial and error, and ultimately using Fiddler to sniff the raw traffic, I discovered the authorization header isn't being sent.

我已经看过这个，但我想我已经获得了身份验证方案指定为 AuthenticationHeaderValue 构造函数的一部分.

I've seen this, but I think I've got the authentication scheme specified as a part of the AuthenticationHeaderValue constructor.

有什么我遗漏的吗?

推荐答案

您的代码看起来应该可以工作 - 我记得在设置 Authorization 标头时遇到了类似的问题，并通过执行 Headers.Add() 而不是设置它来解决:

Your code looks like it should work - I remember running into a similar problem setting the Authorization headers and solved by doing a Headers.Add() instead of setting it:

request.Headers.Add("Authorization", "Basic " + Convert.ToBase64String(System.Text.ASCIIEncoding.ASCII.GetBytes(string.Format("{0}:{1}", "username", "password"))));

更新:看起来当您执行 request.Content 时，并非所有标头都反映在内容对象中.您可以通过检查 request.Headers 与 request.Content.Headers 来看到这一点.您可能想要尝试的一件事是使用 SendAsync 而不是 PostAsync.例如:

UPDATE: It looks like when you do a request.Content, not all headers are being reflected in the content object. You can see this by inspecting request.Headers vs request.Content.Headers. One thing you might want to try is to use SendAsync instead of PostAsync. For example:

HttpRequestMessage<RequestType> request = 
     new HttpRequestMessage<RequestType>(
         new RequestType("third-party-vendor-action"),
         MediaTypeHeaderValue.Parse("application/xml"));

request.Headers.Authorization = 
    new AuthenticationHeaderValue(
        "Basic", 
        Convert.ToBase64String(
            System.Text.ASCIIEncoding.ASCII.GetBytes(
                string.Format("{0}:{1}", "username", "password"))));

 request.Method = HttpMethod.Post;
 request.RequestUri = Uri;
 var task = client.SendAsync(request);

 ResponseType response = task.ContinueWith(
     t => 
         { return t.Result.Content.ReadAsAsync<ResponseType>(); })
         .Unwrap().Result;

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