/*
C# Network Programming
by Richard Blum
Publisher: Sybex
ISBN: 0782141765
*/
using System;
using System.Net;
using System.Net.Sockets;
using System.Text;
public class TcpPollSrvr {
public static void Main()
{
int recv;
byte[] data = new byte[1024];
IPEndPoint ipep = new IPEndPoint(IPAddress.Any,
9050);
Socket newsock = new
Socket(AddressFamily.InterNetwork,
SocketType.Stream, ProtocolType.Tcp);
newsock.Bind(ipep);
newsock.Listen(10);
Console.WriteLine("Waiting for a client...");
bool result;
int i = 0;
while(true)
{
i++;
Console.WriteLine("polling for accept#{0}...", i);
result = newsock.Poll(1000000, SelectMode.SelectRead);
if (result)
{
break;
}
}
Socket client = newsock.Accept();
IPEndPoint newclient =
(IPEndPoint)client.RemoteEndPoint;
Console.WriteLine("Connected with {0} at port {1}",
newclient.Address, newclient.Port);
string welcome = "Welcome to my test server";
data = Encoding.ASCII.GetBytes(welcome);
client.Send(data, data.Length,
SocketFlags.None);
i = 0;
while(true)
{
Console.WriteLine("polling for receive #{0}...", i);
i++;
result = client.Poll(3000000, SelectMode.SelectRead);
if(result)
{
data = new byte[1024];
i = 0;
recv = client.Receive(data);
if (recv == 0)
break;
Console.WriteLine(
Encoding.ASCII.GetString(data, 0, recv));
client.Send(data, recv, 0);
}
}
Console.WriteLine("Disconnected from {0}",
newclient.Address);
client.Close();
newsock.Close();
}
}
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