Question

我试图让我的程序通过代理工作，但它并不想要（System.Net.WebException：操作已经超时）。没有代理一切都很好

这是一段代码：

        string proxy = "154.46.33.157";
        int port = 8080;
        ASCIIEncoding encoding = new ASCIIEncoding();
        string postData = "email=" + email + "&pass=" + pass;
        byte[] data = encoding.GetBytes(postData);
        WebProxy myproxy = new WebProxy(proxy, port);
        HttpWebRequest request = (HttpWebRequest)WebRequest.Create("SITE");
        WebHeaderCollection myWebHeaderCollection = request.Headers;
        request.CookieContainer = sCookie;
        request.Method = "POST";
        request.Proxy = myproxy;
        request.ContentType = "application/x-www-form-urlencoded; charset=UTF-8";
        request.ContentLength = data.Length;
        request.Host = "HOST";
        request.UserAgent = "[UA]";
        request.Referer = "reffer";
        request.KeepAlive = false;
        request.Timeout = 20000;

        Stream stream = request.GetRequestStream(); // TIMEOUT HERE
        stream.Write(data, 0, data.Length);
        stream.Close();
        request.GetResponse()
            .Close();

同时此代码运行良好

        string proxy = "154.46.33.157";
        int port = 8080;
        WebProxy myproxy = new WebProxy(proxy, port);
        WebRequest req = WebRequest.Create("SITE");
        req.Timeout = 5000;
        req.GetResponse();

代理还活着，我通过IE测试了它。我该怎么做才能解决它？

Answer 1

根据应用类型，尝试将以下内容添加到web.config或app.config中：

<configuration>

    <system.net>
        <defaultProxy>
            <proxy
                usesystemdefaults="true"
                proxyaddress="http://154.46.33.157:8080"
                bypassonlocal="true" />
              <bypasslist
                <add address="[a-z]+\.contoso\.com" />
            </bypasslist>
        </defaultProxy>
    </system.net>          

     <!-- The rest of your config here ... -->

</configuration>

您可以在此处找到更多详细信息和其他参数，例如用户凭据等：http://msdn.microsoft.com/en-us/library/kd3cf2ex(v=vs.110).aspx

Answer 2

几点建议：

您是否使用IP地址代理？
您需要登录该代理吗？ proxy.Credentials = new NetworkCredential（User，Password）;
尝试少量标题，从少量开始，如果有效则继续逐一添加

UPD：对于主机 - 它是一个有效的URL？你有没有放一个有效的端口号？比如www.contoso.com:8080

C＃HttpWebRequest请求通过代理

2 个答案: