private static void SendMessage(String message, ReceivedBufferObject toClient)
{
byte[] byteData = Encoding.ASCII.GetBytes(message);
toClient.socket.BeginSend(byteData, 0, byteData.Length, SocketFlags.None, new AsyncCallback(SendCallback), toClient.socket);
Console.WriteLine("Sending: " + message + "to Client " + toClient.ClientNumber + ".");
}
/// <summary>
/// When a client connects to the server successfully, the callback to join will be made to receive the client's messages.
/// </summary>
private static void JoinCallback(IAsyncResult ar)
{
ReceivedBufferObject storageContainer = (ReceivedBufferObject)ar.AsyncState;
Socket clientSocket = storageContainer.socket;
// read data from client as much as specified ReceivedBufferObject allowed
int readPacketData = clientSocket.EndReceive(ar);
// if 0 bytes were read, client shutdown socket, and all available data has been received.
if (readPacketData > 0)
{
// convert data to string and store in the state object
string message = Encoding.ASCII.GetString(storageContainer.buffer, 0, readPacketData);
storageContainer.Data += message;
// if the end of the data was found, we're done
if (message.IndexOf('\n') > -1)
{
Console.WriteLine("Client " + storageContainer.ClientNumber + " sent message: " + storageContainer.Data);
// echo changes to other clients
lock (lockCount)
{
foreach (ReceivedBufferObject player in playerList)
{
if (player.ClientNumber != storageContainer.ClientNumber)
{
SendMessage(storageContainer.ClientNumber + " " + storageContainer.Data, player);
}
}
}
storageContainer.Data = "";
// ask for more messages
clientSocket.BeginReceive(storageContainer.buffer, 0, storageContainer.buffer.Length, SocketFlags.None, new AsyncCallback(JoinCallback), storageContainer);
}
// otherwise, retrieve more data
else
{
Console.WriteLine("Client " + storageContainer.ClientNumber + " sent partial message.");
clientSocket.BeginReceive(storageContainer.buffer, 0, storageContainer.buffer.Length, SocketFlags.None, new AsyncCallback(JoinCallback), storageContainer);
}
}
else
{
Console.WriteLine("Warning: 0 packet sent from client " + storageContainer.ClientNumber + ".");
}
}
/// <summary>
/// Callback is made once connection is successfully made with a client.
/// Handle client request with a new socket.
/// </summary>
private static void ConnectionCallback(IAsyncResult ar)
{
// allow the listener to continue with new threads
mre.Set();
Console.WriteLine("Client connected.");
// create socket that handles clients
Socket connection = ((Socket)ar.AsyncState).EndAccept(ar);
// create an object that will store the received data from the client
ReceivedBufferObject storageContainer;
lock (lockCount)
{
clientCount++;
storageContainer = new ReceivedBufferObject(connection, clientCount);
playerList.Add(storageContainer);
}
Console.WriteLine("Waiting for message from client " + storageContainer.ClientNumber + "...");
// wait for message from client
connection.BeginReceive(storageContainer.buffer, 0, storageContainer.buffer.Length, SocketFlags.None, new AsyncCallback(JoinCallback), storageContainer);
}
private static void SendMessage(String message, ReceivedBufferObject toClient)
{
byte[] byteData = Encoding.ASCII.GetBytes(message);
toClient.socket.BeginSend(byteData, 0, byteData.Length, SocketFlags.None, new AsyncCallback(SendCallback), toClient.socket);
Console.WriteLine("Sending: " + message + "to Client " + toClient.ClientNumber + ".");
}
/// <summary>
/// Callback is made once connection is successfully made with a client.
/// Handle client request with a new socket.
/// </summary>
private static void ConnectionCallback(IAsyncResult ar)
{
// allow the listener to continue with new threads
mre.Set();
Console.WriteLine("Client connected.");
// create socket that handles clients
Socket connection = ((Socket)ar.AsyncState).EndAccept(ar);
// create an object that will store the received data from the client
ReceivedBufferObject storageContainer;
lock (lockCount)
{
clientCount++;
storageContainer = new ReceivedBufferObject(connection, clientCount);
playerList.Add(storageContainer);
}
Console.WriteLine("Waiting for message from client " + storageContainer.ClientNumber + "...");
// wait for message from client
connection.BeginReceive(storageContainer.buffer, 0, storageContainer.buffer.Length, SocketFlags.None, new AsyncCallback(JoinCallback), storageContainer);
}
