public static void ReadCallback(IAsyncResult ar)
{
String content = String.Empty;
// Retrieve the state object and the handler socket
// from the asynchronous state object.
StateObject state = (StateObject)ar.AsyncState;
Socket handler = state.workSocket;
// Read data from the client socket.
int bytesRead = handler.EndReceive(ar);
if (bytesRead > 0)
{
// There might be more data, so store the data received so far.
state.sb.Append(Encoding.ASCII.GetString(
state.buffer, 0, bytesRead));
// Check for end-of-file tag. If it is not there, read
// more data.
content = state.sb.ToString();
if (content.IndexOf("<EOF>") > -1)
{
// All the data has been read from the
// client. Display it on the console.
MessageCollection.GetInstance().AddListOfMessages(UtilityFunctions.MessageParser(content));
Logger.GetInstance().NotifyAll("Received a message");
// TODO: Add notif that promts new message
// Send response
while (!MessageCollection.GetInstance().IsLastMessage())
{
send(handler, MessageCollection.GetInstance().NextMessage().Call());
}
}
else
{
// Not all data received. Get more.
handler.BeginReceive(state.buffer, 0, StateObject.BufferSize, 0,
new AsyncCallback(ReadCallback), state);
}
}
}
public void StartReceiving(ITextChanger ipText)
{
TcpListener server = null;
try
{
// Set the TcpListener on port 13000.
Int32 port = 13000;
IPAddress localAddress = IPAddress.Parse(ipv4Address);
ipText.ChangeText(localAddress.MapToIPv4().ToString());
server = new TcpListener(localAddress, port);
// Start listening for client requests.
server.Start();
// Buffer for reading data
Byte[] bytes = new Byte[256];
String data = null;
// Enter the listening loop.
while (true)
{
Logger.GetInstance().NotifyAll("Waiting for a connection... ");
// Perform a blocking call to accept requests.
// You could also use server.AcceptSocket() here.
TcpClient client = server.AcceptTcpClient();
Logger.GetInstance().NotifyAll("Connected!");
data = null;
// Get a stream object for reading and writing
NetworkStream stream = client.GetStream();
int i;
// Loop to receive all the data sent by the client.
while ((i = stream.Read(bytes, 0, bytes.Length)) != 0)
{
// Translate data bytes to a ASCII string.
data = System.Text.Encoding.ASCII.GetString(bytes, 0, i);
Logger.GetInstance().NotifyAll("Received: " + data);
List <Message> newMessage = UtilityFunctions.MessageParser(data);
MessageCollection.GetInstance().AddListOfMessages(newMessage);
// Process the data sent by the client.
//data = data.ToUpper();
byte[] msg = System.Text.Encoding.ASCII.GetBytes(newMessage[0].Call());
// Send back a response.
stream.Write(msg, 0, msg.Length);
Logger.GetInstance().NotifyAll("Sent: " + data);
}
// Shutdown and end connection
//client.Close();
}
}
catch (SocketException e)
{
Logger.GetInstance().NotifyAll("SocketException: " + e);
}
finally
{
// Stop listening for new clients.
server.Stop();
Logger.GetInstance().NotifyAll("Server has stopped listening");
}
}