/// <summary>
/// Receives and adds the next incomming instruction to the incomming-queue.
/// </summary>
protected void AsyncInstructionReceiveNext()
{
buffer = new byte[bufferSize];
int received = LocalSocket.Receive(buffer, SocketFlags.None);
if (received == 0)
{
return;
}
byte[] data = new byte[received];
Array.Copy(buffer, data, received);
string text = Encoding.UTF8.GetString(data);
Debug("Received Message.", DebugType.Info);
try
{
InstructionBase[] instructionList = InstructionOperations.Parse(this, null, text).ToArray();
foreach (InstructionBase instr in instructionList)
{
incommingInstructions.Add(instr);
}
}
catch (NetComAuthenticationException ex)
{
Debug("Authentication-Error.", DebugType.Error);
if (ShowExceptions)
{
Debug($"({ex.GetType().Name}) {ex.Message}", DebugType.Exception);
}
}
catch (Exception ex)
{
Debug($"Error occured. ({_logErrorCount})", DebugType.Error);
if (ShowExceptions)
{
Debug($"({ex.GetType().Name}) {ex.Message}", DebugType.Exception);
}
_logErrorCount++;
}
}
/// <summary>
/// Gets called when a message is received.
/// </summary>
/// <param name="AR">IAsyncResult</param>
private void ReceiveCallback(IAsyncResult AR)
{
try
{
Socket current = (Socket)AR.AsyncState;
int received;
try
{
received = current.EndReceive(AR);
}
catch (SocketException)
{
Handler.Debug("Client disconnected > Connection lost. (102)", DebugType.Warning);
// Don't shutdown because the socket may be disposed and its disconnected anyway.
current.Close();
UserGroups.Disconnect(current);
ConnectedClients.Remove(current);
return;
}
byte[] recBuf = new byte[received];
Array.Copy(buffer, recBuf, received);
string text = Encoding.UTF8.GetString(recBuf);
Console.ForegroundColor = ConsoleColor.Cyan;
//Debug("Received message: " + text);
Handler.Debug("Received message.", DebugType.Info);
Console.ForegroundColor = ConsoleColor.White;
InstructionBase[] instructionList = null;
try
{
instructionList = InstructionOperations.Parse(this, current, text, ConnectedClients).ToArray();
// Check for group-Addignment
foreach (InstructionBase instr in instructionList)
{
HandlerData.IncommingInstructions.Add(instr);
if (instr.GetType() != typeof(InstructionLibraryEssentials.KeyExchangeClient2Server) && !GroupAddRecords.Contains(instr.Sender.Username))
{
GroupAddRecords.Add(instr.Sender.Username);
UserGroups.TryGroupAdd(instr.Sender);
}
}
}
catch (NetComAuthenticationException ex)
{
Handler.Debug("Authentication-Error (Instruction-Parsing).", DebugType.Error);
if (HandlerData.ShowExceptions)
{
Handler.Debug($"({ex.GetType().Name}) {ex.Message}", DebugType.Exception);
}
}
catch (Exception ex)
{
Handler.Debug($"Error occured (Instruction-Parsing). ({HandlerData.LogErrorCounter})", DebugType.Error);
if (HandlerData.ShowExceptions)
{
Handler.Debug($"({ex.GetType().Name}) {ex.Message}", DebugType.Exception);
}
HandlerData.LogErrorCounter++;
}
try
{
current.BeginReceive(buffer, 0, buffer.Length, SocketFlags.None, ReceiveCallback, current);
}
catch (SocketException)
{
Handler.Debug("Client disconnected > Connection lost. (103)", DebugType.Warning);
// Don't shutdown because the socket may be disposed and its disconnected anyway.
current.Close();
UserGroups.Disconnect(current);
ConnectedClients.Remove(current);
return;
}
}
catch (Exception ex)
{
Handler.Debug("Halting (05)", DebugType.Warning);
if (HandlerData.ShowExceptions)
{
Handler.Debug($"({ex.GetType().Name}) {ex.Message}", DebugType.Exception);
}
if (HandlerData.TryRestartOnCrash)
{
HaltAllThreads();
}
}
}
