Httpclient Cookie 问题

Question

问题：我正在尝试使用 httpclient 从 site.Now 站点获取数据，该站点要求您首先访问 link，然后您才能 post 将数据传输到下一个 link。 Link1 是一个简单的 get 请求 Link2 是一个 post 请求现在我认为该站点首先存储一些来自 link1 的 cookie，然后只允许您将 post 数据发送到 link2，因为每当我尝试打开 link2 时隐身站点显示错误消息“会话超时或达到最大连接限制。无法继续。请关闭并重新启动浏览器” 现在我试过了：

 try
        {
            //Send the GET request
            httpResponse = await httpClient.GetAsync(new Uri(link1UriString));
            //Send the POSTrequest
             httpResponse = await httpClient.PostAsync(new Uri(link2uriString),postContent);                
            httpResponseBody = await httpResponse.Content.ReadAsStringAsync();

            }

但我收到会话超时错误消息。如何维护从 python 中的 web.Like 连续接收到的 httpClient 会话的 cookie，可以通过

完成

 opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cookielib.CookieJar()))
 urllib2.install_opener(opener)

Link1
Link2

Answer 1

您可以使用 CookieContainer 为您处理 cookie。
这样做，您将像这样创建 HttpClient。

using System.Net;
using System.Net.Http;

CookieContainer cookies = new CookieContainer();
HttpClientHandler handler = new HttpClientHandler();
handler.CookieContainer = cookies;
HttpClient httpClient = new HttpClient(handler);

httpResponse = await httpClient.GetAsync(new Uri(link1UriString));

(注意使用System.Net.Http中的HttpClient版本)

Answer 2

所以，在第一次回复后你有 Set-Cookie header:

var responseMessage = await httpClient.GetAsync("http://115.248.50.60/registration/Main.jsp?wispId=1&nasId=00:15:17:c8:09:b1");
IEnumerable<string> values;
var coockieHeader = string.Empty;
if (responseMessage.Headers.TryGetValues("set-cookie", out values))
{
    coockieHeader = string.Join(string.Empty, values);
}

之后，只需将您的 cookie 设置到请求消息中：

        var httpRequestMessage = new HttpRequestMessage
        {
            RequestUri = new Uri("http://115.248.50.60/registration/chooseAuth.do"),
            Content = postContent,
            Method = HttpMethod.Post
        };

        httpRequestMessage.Headers.Add("Cookie", values);
        var httpResponse = await httpClient.SendAsync(httpRequestMessage);

Httpclient Cookie 问题

Httpclient Cookie Issue

c#

cookies

session-cookies

win-universal-app

uwp