Select Tcp Server
/*
C# Network Programming
by Richard Blum
Publisher: Sybex
ISBN: 0782141765
*/
using System;
using System.Collections;
using System.Net;
using System.Net.Sockets;
using System.Text;
public class SelectTcpSrvr
{
public static void Main()
{
ArrayList sockList = new ArrayList(2);
ArrayList copyList = new ArrayList(2);
Socket main = new Socket(AddressFamily.InterNetwork,
SocketType.Stream, ProtocolType.Tcp);
IPEndPoint iep = new IPEndPoint(IPAddress.Any, 9050);
byte[] data = new byte[1024];
string stringData;
int recv;
main.Bind(iep);
main.Listen(2);
Console.WriteLine("Waiting for 2 clients...");
Socket client1 = main.Accept();
IPEndPoint iep1 = (IPEndPoint)client1.RemoteEndPoint;
client1.Send(Encoding.ASCII.GetBytes("Welcome to the server"));
Console.WriteLine("Connected to {0}", iep1.ToString());
sockList.Add(client1);
Console.WriteLine("Waiting for 1 more client...");
Socket client2 = main.Accept();
IPEndPoint iep2 = (IPEndPoint)client2.RemoteEndPoint;
Console.WriteLine("Connected to {0}", iep2.ToString());
client2.Send(Encoding.ASCII.GetBytes("Welcome to the server"));
sockList.Add(client2);
main.Close();
while(true)
{
copyList = new ArrayList(sockList);
Console.WriteLine("Monitoring {0} sockets...", copyList.Count);
Socket.Select(copyList, null, null, 10000000);
foreach(Socket client in copyList)
{
data = new byte[1024];
recv = client.Receive(data);
stringData = Encoding.ASCII.GetString(data, 0, recv);
Console.WriteLine("Received: {0}", stringData);
if (recv == 0)
{
iep = (IPEndPoint)client.RemoteEndPoint;
Console.WriteLine("Client {0} disconnected.", iep.ToString());
client.Close();
sockList.Remove(client);
if (sockList.Count == 0)
{
Console.WriteLine("Last client disconnected, bye");
return;
}
}
else
client.Send(data, recv, SocketFlags.None);
}
}
}
}
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