如何使用主機名獲取IP地址？

Question

我正在做一個客戶端連接到本地託管的服務器，從服務器獲取庫存號碼。如果我在下面使用這個代碼，程序會工作，但它的工作方式是通過獲取DNS名稱，因此理論上它只需要www.website.com，我無法弄清楚我如何才能識別127.0的正常IP。 0.1或本地主機IP：

IPHostEntry ipHostInfo = Dns.GetHostEntry("www.website.com"); 
      IPAddress ipAddress = ipHostInfo.AddressList[0]; 
      IPEndPoint remoteEP = new IPEndPoint(ipAddress, port); 

附件是我學嘗試得到這個解析IP，但我不認爲我接近這一權利的完整代碼可以在這裏看到：StockReader Client Code

public class AsynchronousClient 
{ 

    private const int port = 21; 

    // ManualResetEvent instances signal completion. 
    private static ManualResetEvent connectDone = 
     new ManualResetEvent(false); 
    private static ManualResetEvent sendDone = 
     new ManualResetEvent(false); 
    private static ManualResetEvent receiveDone = 
     new ManualResetEvent(false); 

    // The response from the remote device. 
    private static String response = String.Empty; 

    private static void StartClient() 
    { 
     // Connect to a remote device. 
     try 
     { 
      // Establish the remote endpoint for the socket. 
      // The name of the 

     //******************ISSUE BEGINS HERE********************************* 
      string sHostName = Dns.GetHostName(); 
      IPHostEntry ipHostInfo = Dns.GetHostEntry(sHostName); 
      IPAddress [] ipAddress = ipHostInfo.AddressList; 
      IPEndPoint remoteEP = new IPEndPoint(ipAddress, port); 

      // Create a TCP/IP socket. 
      Socket client = new Socket(AddressFamily.InterNetwork, 
       SocketType.Stream, ProtocolType.Tcp); 

      // Connect to the remote endpoint. 
      client.BeginConnect(remoteEP, 
       new AsyncCallback(ConnectCallback), client); 
      connectDone.WaitOne(); 

      // Send test data to the remote device. 
      Send(client, "This is a test<EOF>"); 
      sendDone.WaitOne(); 

      // Receive the response from the remote device. 
      Receive(client); 
      receiveDone.WaitOne(); 

      // Write the response to the console. 
      Console.WriteLine("Response received : {0}", response); 

      // Release the socket. 
      client.Shutdown(SocketShutdown.Both); 
      client.Close(); 

     } 
     catch (Exception e) 
     { 
      Console.WriteLine(e.ToString()); 
     } 
    } 

Answer 1

當你設置值爲ipAddress，則可以使用IPAddress.Parse方法傳遞字符串並檢索IPAddressobj ECT的而不是使用域名：

string ip = "127.0.0.1"; 
IPAddress address = IPAddress.Parse(ipAddress); 
IPEndPoint remoteEP = new IPEndPoint(ipAddress, port); 

Answer 2

嘗試使用string sHostName = "localhost";

Answer 3

// Establish the remote endpoint for the socket. 
IPAddress ipAddress = IPAddress.Parse("127.0.0.1"); 
IPEndPoint remoteEP = new IPEndPoint(ipAddress, portnumber); 

// Create a TCP/IP socket. 
Socket s = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp); 
s.Connect(remoteEP);