/// <summary>
/// Sends the next instruction from the outgoing-queue.
/// </summary>
protected override void AsyncInstructionSendNext()
{
base.AsyncInstructionSendNext();
if (!HandlerData.HaltActive)
{
try
{
if ((HandlerData.OutgoingInstructions[0].Receiver as NetComCData).Authenticated ||
HandlerData.OutgoingInstructions[0].GetType() != typeof(InstructionLibraryEssentials.KeyExchangeServer2Client) ||
HandlerData.OutgoingInstructions[0].GetType() != typeof(InstructionLibraryEssentials.AuthenticationServer2Client))
{
Socket current = HandlerData.OutgoingInstructions[0]?.Receiver.LocalSocket;
byte[] data;
data = Encoding.UTF8.GetBytes(HandlerData.OutgoingInstructions[0].Encode());
try
{
current.Send(data);
}
catch (Exception)
{
Handler.Debug("Client disconnected > Connection lost. (101)", DebugType.Warning);
current.Close();
UserGroups.Disconnect(current);
ConnectedClients.Remove(current);
return;
}
Handler.Debug($"Sent Message to {HandlerData.OutgoingInstructions[0].Receiver.ToString()}.", DebugType.Info);
Handler.Debug(HandlerData.OutgoingInstructions[0].ToString(), DebugType.Info);
HandlerData.OutgoingInstructions.RemoveAt(0);
}
else
{
Handler.Debug($"Could not send Message to {HandlerData.OutgoingInstructions[0].Receiver.ToString()}. Authentication not valid.", DebugType.Error);
Handler.Debug($"Sending Authentication-Reminder...", DebugType.Info);
// Queues a authentication-reminder
Send(new InstructionLibraryEssentials.AuthenticationReminder(this, HandlerData.OutgoingInstructions[0].Receiver));
// moves the current instruction to the back
HandlerData.OutgoingInstructions.Add(HandlerData.OutgoingInstructions[0].Clone());
HandlerData.OutgoingInstructions.RemoveAt(0);
}
}
catch (Exception ex)
{
Handler.Debug("Halting (08)", DebugType.Warning);
if (HandlerData.ShowExceptions)
{
Handler.Debug($"({ex.GetType().Name}) {ex.Message}", DebugType.Exception);
}
if (HandlerData.TryRestartOnCrash)
{
HaltAllThreads();
}
}
}
else
{
Handler.Debug("Could not send message. Server is in halt-mode. Waiting for 5 seconds...", DebugType.Error);
Thread.Sleep(5000);
}
}
/// <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();
}
}
}