的HttpRequest使得從System.Configuration.Install.Installer

Question

繼承的類我想在完成安裝後啓動的EXE http請求的時候，所以我寫了一個自定義的啓動條件像下面超時異常：

[RunInstaller(true)] 
     public class InstallerClass : System.Configuration.Install.Installer 
     {  
      public InstallerClass() : base() 
      {    
       this.AfterInstall += new InstallEventHandler(InstallerClass_AfterInstall); 
      }   
      void InstallerClass_AfterInstall(object sender, InstallEventArgs e) 
      { 
       Directory.SetCurrentDirectory(
       Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location)); 
       ProcessStartInfo psi = new ProcessStartInfo(
       Path.GetDirectoryName(
       Assembly.GetExecutingAssembly().Location) + "\\MyApp.exe"); 

       psi.WorkingDirectory = Path.GetDirectoryName(
       Assembly.GetExecutingAssembly().Location); 
       psi.Verb = "runas"; 

       Process p = new Process(); 
       p.StartInfo = psi; 

       p.Start();    
      }   
. 
. 
.  } 

問題：MyApp.exe正在創建http請求以從服務器獲取一些數據。我得到超時異常每次如果MyApp.exe從這裏啓動。如果我單獨運行MyApp.exe，它會成功創建http請求而不會超時。下面是http請求的代碼：

HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(uri); 
request.Timeout = TimeOut;      
request.Credentials = CredentialCache.DefaultCredentials; 
request.Proxy = WebRequest.DefaultWebProxy; 
request.UseDefaultCredentials = true; 
request.AllowAutoRedirect = true; 
request.KeepAlive = false; 
request.Method = "HEAD"; 
request.SendChunked = true;      

using (HttpWebResponse response = (HttpWebResponse)request.GetResponse()) 
{ 
returnValue = response.StatusCode; 
} 

爲什麼會出現超時異常？我在哪裏做錯了？

Answer 1

當安裝程序運行時，它具有特殊的權限/權限運行...

也許你可以登錄什麼request.Credentials = CredentialCache.DefaultCredentials;和request.Proxy = WebRequest.DefaultWebProxy;值是對超時的情況下成功運行時