#如何用ping的方法验证代理IP是否可用

   

    public
     
    static
     
    void
     LocalPing ()
        {
            
    //
     Ping's the local machine.
    

                Ping pingSender 
    =
     
    new
     Ping ();
            IPAddress address 
    =
     IPAddress.Loopback;
            PingReply reply 
    =
     pingSender.Send (address);

            
    if
     (reply.Status 
    ==
     IPStatus.Success)
            {
                Console.WriteLine (
    "
    Address: {0}
    "
    , reply.Address.ToString ());
                Console.WriteLine (
    "
    RoundTrip time: {0}
    "
    , reply.RoundtripTime);
                Console.WriteLine (
    "
    Time to live: {0}
    "
    , reply.Options.Ttl);
                Console.WriteLine (
    "
    Don't fragment: {0}
    "
    , reply.Options.DontFragment);
                Console.WriteLine (
    "
    Buffer size: {0}
    "
    , reply.Buffer.Length);
            }
            
    else
    
            {
                Console.WriteLine (reply.Status);
            }
        }


   

参考
http://msdn.microsoft.com/en-us/library/hb7xxkfx.aspx