C＃Expect100Continue标头请求

Question

我在用不同的域发布用户名和密码时遇到问题-一个成功提交表单，而另一个则不提交（表单数据为空）！ 两个域上的html代码是相同的。 这是示例代码-注释域未发布：非常感谢您的帮助！

注意：在nginx上运行的域成功发布了数据，而在apache上的其他域则完全没有关系，这与服务器有关

 public class CookieAwareWebClient : System.Net.WebClient
{
    private System.Net.CookieContainer Cookies = new System.Net.CookieContainer();

    protected override System.Net.WebRequest GetWebRequest(Uri address)
    {
        System.Net.WebRequest request = base.GetWebRequest(address);
        if (request is System.Net.HttpWebRequest)
        {
            var hwr = request as System.Net.HttpWebRequest;
            hwr.CookieContainer = Cookies;
        }
        return request;
    }
}

# Main function
NameValueCollection postData = new NameValueCollection();
postData.Add("username", "abcd");
postData.Add("password", "efgh");

var wc = new CookieAwareWebClient();
//string url = "https://abcd.example.com/service/login/";
string url = "https://efgh.example.com/service/login/";

wc.DownloadString(url);

//writer.WriteLine(wc.ResponseHeaders);
Console.WriteLine(wc.ResponseHeaders);

byte[] results = wc.UploadValues(url, postData);
string text = System.Text.Encoding.ASCII.GetString(results);

Console.WriteLine(text);

Answer 1

问题在于，每次通过程序发出请求时，都会自动添加Expect100Continue标头，而在Apache上处理得不好。 每次以以下方式发出请求时，必须将Expect100Continue设置为false。 感谢Fiddler的领导，尽管我可以通过Amazon EC2实例上的dumpcap工具看到它！ 这是解决方案！

# Main function
NameValueCollection postData = new NameValueCollection();  
postData.Add("username", "abcd");
postData.Add("password", "efgh");


var wc = new CookieAwareWebClient();
var uri = new Uri("https://abcd.example.com/service/login/");
var servicePoint = ServicePointManager.FindServicePoint(uri);
servicePoint.Expect100Continue = false;

wc.DownloadString(uri);

Console.WriteLine(wc.ResponseHeaders);

byte[] results = wc.UploadValues(uri, postData);
string text = System.Text.Encoding.ASCII.GetString(results);
Console.WriteLine(text);