private static IPAddress DnsLookup(GopherURL gopherURL)
{
IPHostEntry hostEntry = Dns.GetHostEntry(gopherURL.Server);
foreach (IPAddress testip in hostEntry.AddressList)
{
//loop through the addresses until we find one we can connect a socket to
//only return ipv4 for now... :( FIXME
if (testip.AddressFamily == AddressFamily.InterNetwork)
{
return testip;
}
}
return null;
}
internal string GetFromServer(GopherURL gopherURL)
{
IPAddress destination = DnsLookup(gopherURL);
IPEndPoint ipEndPoint = new IPEndPoint( destination, Convert.ToInt16(gopherURL.Port));
using (Socket socket = new Socket(ipEndPoint.AddressFamily, SocketType.Stream, ProtocolType.Tcp))
{
try
{
socket.Connect(ipEndPoint);
}
catch (SocketException e)
{
return e.Message;
}
if (socket.Connected)
{
Byte[] Sent = Encoding.ASCII.GetBytes(gopherURL.AsRequestString());
Byte[] Received = new Byte[256];
if (socket == null) throw new ArgumentOutOfRangeException();
socket.Send(Sent, Sent.Length, 0);
int bytes = 0;
string page = "";
do
{
bytes = socket.Receive(Received, Received.Length, 0);
page += Encoding.ASCII.GetString(Received, 0, bytes);
} while (bytes > 0); //run at least once
return page;
}
else
{
return null;
}
}
}
public GopherProtocol(GopherURL gopherURL)
{
// TODO: Complete member initialization
this.gopherURL = gopherURL;
}
internal static string GetData(GopherURL gopherURL)
{
return "";
}
internal static GopherContent GetURI(GopherURL gurl)
{
GopherProtocol gopherProtocol = new GopherProtocol(GopherURI = gurl);
return new GopherContent() { Text = gopherProtocol.GetData() };
}