/// <summary>
/// This function is referenced by the BeginConnect method above and is "called" by the OS when the
/// socket connects to the server.
///
/// Once a connection is established the "saved away" callbackFunction is called. This function
/// is saved in the socket state, and was originally passed in to ConnectToServer.
/// </summary>
/// <param name="ar">Contains the "state" object saved in the ConnectToServer function.</param>
private static void ConnectedToServer(IAsyncResult ar)
{
try
{
SocketState ss = (SocketState)ar.AsyncState;
ss.theSocket.EndConnect(ar);
ss.callMe(ss);
ss.theSocket.BeginReceive(ss.messageBuffer, 0, 1024, SocketFlags.None, new AsyncCallback(Networking.ReceiveCallback), (object)ss);
}
catch (Exception)
{
}
}
/// <summary>
/// This function is called by the OS when new data arrives. This function checks to see how
/// much data has arrived. If 0, the connection has been closed (presumably by the server).
/// On greater than zero data, this method should call the callback function provided above.
/// </summary>
/// <param name="ar">Contains the "state" object saved in the ConnectToServer function.</param>
private static void ReceiveCallback(IAsyncResult ar)
{
try
{
SocketState ss = (SocketState)ar.AsyncState;
int bytesRead = ss.theSocket.EndReceive(ar);
if (bytesRead > 0)
{
string message = Encoding.UTF8.GetString(ss.messageBuffer, 0, bytesRead);
ss.sb.Append(message);
ss.callMe(ss);
GetData(ss);
}
}
catch (Exception)
{
}
}
/// <summary>
/// Callback function called when a new client has connected to the server.
///
/// We begin receiving data from the client at this point.
/// </summary>
/// <param name="ar">The SocketState object.</param>
public static void AcceptNewClient(IAsyncResult ar)
{
Console.WriteLine("A new client has connected to the server!");
SocketState ss = (SocketState)ar.AsyncState;
Socket theSocket = ss.theSocket;
IAsyncResult asyncResult = ar;
Socket socket = theSocket.EndAccept(asyncResult);
socket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.Debug, true);
SocketState ss1 = new SocketState();
ss1.theSocket = socket;
ss1.theSocket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.Debug, true);
ss.callMe(ss1);
AsyncCallback callback = new AsyncCallback(Networking.AcceptNewClient);
SocketState ss2 = ss;
theSocket.BeginAccept(callback, (object)ss2);
}