private void RecieveCallback(IAsyncResult ar)
{
DataAsyncState state = ar.AsyncState as DataAsyncState;
try {
if (state.Client != null && state.Client.Connected)
{
int packetSize;
packetSize = state.Client.EndReceive(ar);
if (packetSize < 1)
{
// Close the client connection since it disconnected.
DoDisconnect(state.Client);
return;
}
string stringData = encoding.GetString(state.Data, 0, packetSize);
dataCallback(this, new DataRecievedEventArgs(stringData, state.Client.RemoteEndPoint, state.Client, packetSize, state.Index));
DataAsyncState state2 = new DataAsyncState(bufferSize, state.Client, state.Index);
state.Client.BeginReceive(state2.Data, 0, bufferSize, SocketFlags.None,
new AsyncCallback(RecieveCallback), state2);
}
} catch (SocketException sockex) {
if ((SocketError)sockex.ErrorCode != SocketError.Success)
{
RaiseError(sockex.Message, "", (SocketError)sockex.ErrorCode);
DoDisconnect(state.Client);
}
} catch (ObjectDisposedException) {
DoDisconnect(state.Client);
return;
} catch {
DoDisconnect(state.Client);
}
}
private void ListenCallback(IAsyncResult ar)
{
try {
System.Net.Sockets.Socket listener = ar.AsyncState as System.Net.Sockets.Socket;
if (listener == null)
{
//throw (new Exception("Listener Socket no longer exists"));
Exceptions.ErrorLogger.WriteToErrorLog(new Exception("Listener socket no longer exists"), "Listener socket no longer exists");
}
//CErrorLogger.WriteToErrorLog(new Exception("Listen callback hit"), "Listen callback hit");
System.Net.Sockets.Socket client = listener.EndAccept(ar);
if (listening != true)
{
listener.Close();
return;
}
int index = FindOpenIndex();
if (index == -1)
{
Exceptions.ErrorLogger.WriteToErrorLog(new Exception("Server Full"), "Server Full");
client.Close();
}
else
{
clients[index] = client;
connectionCallback(this, new ConnectionRecievedEventArgs(client.RemoteEndPoint, client, index));
DataAsyncState state = new DataAsyncState(bufferSize, client, index);
if (client.Connected)
{
client.BeginReceive(state.Data, 0, bufferSize, SocketFlags.None,
new AsyncCallback(RecieveCallback), state);
}
}
listener.BeginAccept(new AsyncCallback(ListenCallback), listener);
} catch (ObjectDisposedException ex) {
Exceptions.ErrorLogger.WriteToErrorLog(ex, "Disposed exception, server listener.");
serverSocket.BeginAccept(new AsyncCallback(ListenCallback), serverSocket);
return;
} catch (SocketException socketex) {
Exceptions.ErrorLogger.WriteToErrorLog(socketex, "Socket exception, server listener.");
RaiseError(socketex.Message, "", (SocketError)socketex.ErrorCode);
serverSocket.BeginAccept(new AsyncCallback(ListenCallback), serverSocket);
} catch (Exception ex) {
Exceptions.ErrorLogger.WriteToErrorLog(ex, "Normal exception, server listener.");
serverSocket.BeginAccept(new AsyncCallback(ListenCallback), serverSocket);
}
}
private void RecieveCallback(IAsyncResult ar)
{
DataAsyncState state = ar.AsyncState as DataAsyncState;
try {
if (state.Client != null && state.Client.Connected) {
int packetSize;
packetSize = state.Client.EndReceive(ar);
if (packetSize < 1) {
// Close the client connection since it disconnected.
DoDisconnect(state.Client);
return;
}
string stringData = encoding.GetString(state.Data, 0, packetSize);
dataCallback(this, new DataRecievedEventArgs(stringData, state.Client.RemoteEndPoint, state.Client, packetSize, state.Index));
DataAsyncState state2 = new DataAsyncState(bufferSize, state.Client, state.Index);
state.Client.BeginReceive(state2.Data, 0, bufferSize, SocketFlags.None,
new AsyncCallback(RecieveCallback), state2);
}
} catch (SocketException sockex) {
if ((SocketError)sockex.ErrorCode != SocketError.Success) {
RaiseError(sockex.Message, "", (SocketError)sockex.ErrorCode);
DoDisconnect(state.Client);
}
} catch (ObjectDisposedException) {
DoDisconnect(state.Client);
return;
} catch {
DoDisconnect(state.Client);
}
}
private void ListenCallback(IAsyncResult ar)
{
try {
System.Net.Sockets.Socket listener = ar.AsyncState as System.Net.Sockets.Socket;
if (listener == null) {
//throw (new Exception("Listener Socket no longer exists"));
Exceptions.ErrorLogger.WriteToErrorLog(new Exception("Listener socket no longer exists"), "Listener socket no longer exists");
}
//CErrorLogger.WriteToErrorLog(new Exception("Listen callback hit"), "Listen callback hit");
System.Net.Sockets.Socket client = listener.EndAccept(ar);
if (listening != true) {
listener.Close();
return;
}
int index = FindOpenIndex();
if (index == -1) {
Exceptions.ErrorLogger.WriteToErrorLog(new Exception("Server Full"), "Server Full");
client.Close();
} else {
clients[index] = client;
connectionCallback(this, new ConnectionRecievedEventArgs(client.RemoteEndPoint, client, index));
DataAsyncState state = new DataAsyncState(bufferSize, client, index);
if (client.Connected) {
client.BeginReceive(state.Data, 0, bufferSize, SocketFlags.None,
new AsyncCallback(RecieveCallback), state);
}
}
listener.BeginAccept(new AsyncCallback(ListenCallback), listener);
} catch (ObjectDisposedException ex) {
Exceptions.ErrorLogger.WriteToErrorLog(ex, "Disposed exception, server listener.");
serverSocket.BeginAccept(new AsyncCallback(ListenCallback), serverSocket);
return;
} catch (SocketException socketex) {
Exceptions.ErrorLogger.WriteToErrorLog(socketex, "Socket exception, server listener.");
RaiseError(socketex.Message, "", (SocketError)socketex.ErrorCode);
serverSocket.BeginAccept(new AsyncCallback(ListenCallback), serverSocket);
} catch (Exception ex) {
Exceptions.ErrorLogger.WriteToErrorLog(ex, "Normal exception, server listener.");
serverSocket.BeginAccept(new AsyncCallback(ListenCallback), serverSocket);
}
}
