Http访问代理使用

1、GlobalProxySelection 类

包含所有 HTTP 请求的全局默认代理实例。

2、代码示例

if(Setting.NeedProxy)
   {
    GlobalProxySelection.Select = SetupProxy();
   }

//Create a new request
   HttpWebRequest HttpWRequest = (HttpWebRequest)WebRequest.Create(requestURL);
   if(null==HttpWRequest)
   {
    Logger.Write("web request failed");
    return false;
   }

 

private WebProxy SetupProxy()
  {
   // if a proxyURL is specified in the configuration file,
   // create a WebProxy object for later use.
   WebProxy mProxy = null;
   string proxyURL = Setting.ProxyURL;
   if (proxyURL != null)
   {
    int proxyPort = GetProxyPort();
    if (proxyPort > 0)
    {
     mProxy = new WebProxy(proxyURL, proxyPort);
    }
    else
    {
     mProxy = new WebProxy( proxyURL );
    }
           
           
    // if a proxyUser is specified in the configuration file,
    // set up the proxy object's Credentials.
    string proxyUser = Setting.ProxyUser;
    if (proxyUser != null)
    {
     string proxyPassword = Setting.ProxyPassword;
     string proxyDomain = Setting.ProxyDomain;
     if (proxyDomain != null)
     {
      mProxy.Credentials = new NetworkCredential(proxyUser, proxyPassword, proxyDomain);
     }
     else
     {
      mProxy.Credentials = new NetworkCredential(proxyUser, proxyPassword);
     }
    }
   }
   return mProxy;
  }