public CoreComm()
{
// reading config for servers' parameters
IamServer server1 = new IamServer("127.0.0.1", 1578);
servers.Add(server1);
IamServer server2 = new IamServer("127.0.0.1", 1579);
servers.Add(server2);
}
public void SendRequestToServer(IamServer server)
{
// Initialize socket between Proxy and Server
P2SSocket = new TcpClient();
// Create connection between Proxy and Server
P2SSocket.Connect(IPAddress.Parse(server.IP), server.Port);
NetworkStream P2SStream = P2SSocket.GetStream();
StreamReader srP2S = new StreamReader(P2SStream);
StreamWriter swP2S = new StreamWriter(P2SStream);
StreamReader srC2P = new StreamReader(C2PStream);
StreamWriter swC2P = new StreamWriter(C2PStream);
// Get IP and port or client
string clientIP = ((IPEndPoint)C2PSocket.Client.RemoteEndPoint).Address.ToString();
string clientPort = ((IPEndPoint)C2PSocket.Client.RemoteEndPoint).Port.ToString();
// Get IP and port or server
string serverIP = ((IPEndPoint)P2SSocket.Client.RemoteEndPoint).Address.ToString();
string serverPort = ((IPEndPoint)P2SSocket.Client.RemoteEndPoint).Port.ToString();
// Response: * OK IMAP4rev1 Service Ready
string response = srP2S.ReadLine();
swC2P.WriteLine(response);
swC2P.Flush();
// Commands from client
string msg = "";
while (P2SSocket.Connected)
{
try
{
// Read command from client
msg = srC2P.ReadLine();
// Sudden disconnection from client
if (msg == null)
{
break;
}
// Send Command to server
swP2S.WriteLine(msg);
swP2S.Flush();
var receiveBuffer = new byte[bufSize];
// Read response from server in bytes instead of sr.Readline
var count = P2SStream.Read(receiveBuffer, 0, bufSize);
response = Encoding.UTF8.GetString(receiveBuffer, 0, count);
// Return client the server response
swC2P.WriteLine(response.Trim());
swC2P.Flush();
// Commands with only tag
if (msg.Split(' ').Length == 1)
{
continue;
}
// Client call logout command
if ((msg.Split(' ')[1]).ToLower() == "logout")
{
break;
}
}
catch
{
// Close streams
srP2S.Dispose();
srP2S.Close();
swP2S.Dispose();
swP2S.Close();
srC2P.Dispose();
srC2P.Close();
swC2P.Dispose();
swC2P.Close();
break;
}
}
// Shutdown and end connection
Console.WriteLine(clientIP + " : " + clientPort + " disconnected");
C2PSocket.Close();
Console.WriteLine("Disconnect with server " + serverIP + " : " + serverPort);
P2SSocket.Close();
// Close streams
srP2S.Dispose();
srP2S.Close();
swP2S.Dispose();
swP2S.Close();
srC2P.Dispose();
srC2P.Close();
swC2P.Dispose();
swC2P.Close();
}
