c# - 使用 .net 框架 3.5 的 httpwebrequest 代理身份验证返回 407 错误

Question

我在 .net framework 3.5 项目中使用此代码：

HttpWebRequest request = (HttpWebRequest) HttpWebRequest.Create(ServiceUri);
WebProxy proxy = new WebProxy();
proxy.Address = new Uri(ProxyUri);
proxy.Credentials = new NetworkCredential(userName, pass, domain);
request.Proxy = proxy;
request.Method = "POST";  
request.ContentType = "application/xml";
request.Accept = "application/xml";
byte[] content = Encoding.UTF8.GetBytes(xmlRequest.ToString());
request.ContentLength = content.Length;
using (var stream = request.GetRequestStream())
{
   stream.Write(content, 0, content.Length);
}
HttpWebResponse response = (HttpWebResponse) request.GetResponse();

最后一行给了我“需要 407 代理身份验证”。但是如果我添加到配置中它会起作用：

  <startup>
    <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0" />
  </startup>

如何在不使用 clr 4.0 的情况下使其工作？

Answer 1

太阳，

我解决了这个问题：

proxy.UseDefaultCredentials = true;