15.4.txt

《Microsoft Visual C# .NET 2003开发技巧大全》源代码

Listing 15.4 Performing DNS Lookup
[STAThread]
static void Main(string[] args)
{
TcpClient client = new TcpClient();
Byte[] read = new Byte[1024];
string gameServer = “”;
if (args.Length != 1)
{
gameServer = “127.0.0.1”;
}
else
{
gameServer = args[0];
}
// Verify that the server exists
IPHostEntry serverIP = Dns.Resolve( gameServer );
if( serverIP == null )
{
Console.WriteLine(“Cannot find server: {0}”, gameServer);
return;
}
else
{
Console.WriteLine( “Found server. {0}”, serverIP.HostName );
}
}