/// <summary>
/// Bans a client from the network when the kick button is pressed.
/// </summary>
/// <param name="sender">Object that invoked this event.</param>
/// <param name="e">Reason why this event was invoked.</param>
private void banPeerButton_Click(object sender, EventArgs e)
{
string selectedPeer = "";
int clientID = 0;
if (peerListView.SelectedItems.Count != 0)
selectedPeer = peerListView.SelectedItems[0].Text;
if (int.TryParse(selectedPeer, out clientID) == false)
return;
// Open ban window.
BanWindow banWindow = new BanWindow();
if (banWindow.ShowDialog(this) == DialogResult.OK)
{
NetworkPacket packet = new NetworkPacket();
packet.ID = "BAN".GetHashCode();
foreach (NetworkClient client in NetworkManager.Connection.ClientList)
if (client.ID == clientID)
{
// Send it the explanation packet.
client.Connection.SendPacket(packet);
// Create a ban.
NetworkBan ban = new NetworkBan("000.000.000.000", -1, banWindow.BanExpiration);
NetworkManager.BansList.Add(ban);
// Add its IP to the black list.
if (banWindow.BanIP == true)
{
string currentIP = client.Connection.Socket.RemoteEndPoint.ToString();
if (currentIP.IndexOf(":") >= 0) currentIP = currentIP.Substring(0, currentIP.IndexOf(":"));
ban.IP = currentIP;
}
// Ban its account (if its logged in).
if (banWindow.BanAccount == true && client.LoggedIn == true)
ban.AccountID = client.AccountID;
// Close its connection.
client.Connection.Close();
}
DebugLogger.WriteLog("Banning client " + clientID + ".");
}
}
/// <summary>
/// Invoked when this server recieves a packet from this client.
/// </summary>
/// <param name="asyn">Asyncronous state.</param>
private void OnRecievePacket(IAsyncResult asyn)
{
if (_socket == null || (_socket.Connected == false && _isListening == false && _isConnected == true))
return;
try
{
// Reading the header.
if (_recieveBuffer.Length == NetworkPacket.HEADER_SIZE)
{
// Finish recieving.
_socket.EndReceive(asyn);
// Decode the header.
_recievedPacket = new NetworkPacket();
_recievedPacket.Decode(_recieveBuffer, true, false);
_globalBytesRecieved += _recieveBuffer.Length;
_bytesRecieved += _recieveBuffer.Length;
// No extra data?
if (_recievedPacket.DataLength <= 0)
{
// Evaluate the packet.
if (EvaluatePacket(_recievedPacket) == false)
{
if (PacketRecieved != null) PacketRecieved(this, _recievedPacket);
if (_asyncRecievePacketID == -1 || _recievedPacket.ID == _asyncRecievePacketID)
_asyncRecievePacket = _recievedPacket;
_recievedPacket = null;
}
// Go back to recieving general data.
BeginRecieving(NetworkPacket.HEADER_SIZE);
}
else
{
// Read in the rest of the packet.
BeginRecieving(_recievedPacket.DataLength);
}
}
// Reading the data.
else
{
// Finish recieving.
_socket.EndReceive(asyn);
// Decode rest of data.
_recievedPacket.Decode(_recieveBuffer, false, true);
_globalBytesRecieved += _recieveBuffer.Length;
_bytesRecieved += _recieveBuffer.Length;
// Evaluate the packet.
if (EvaluatePacket(_recievedPacket) == false)
{
if (PacketRecieved != null) PacketRecieved(this, _recievedPacket);
if (_asyncRecievePacketID == -1 || _recievedPacket.ID == _asyncRecievePacketID)
_asyncRecievePacket = _recievedPacket;
_recievedPacket = null;
}
// Go back to recieving general data.
BeginRecieving(NetworkPacket.HEADER_SIZE);
}
}
catch (Exception)
{ }
}
/// <summary>
/// Invoked when a client attempts to connect to this server.
/// </summary>
/// <param name="asyn">Asyncronous state.</param>
private void OnClientConnect(IAsyncResult asyn)
{
if (_socket == null || (_socket.Connected == false && _isListening == false && _isConnected == true))
return;
lock (_clientList)
{
try
{
Socket clientSocket = _socket.EndAccept(asyn);
NetworkConnection clientConnection = new NetworkConnection(clientSocket);
// To many clients?
if (_clientList.Count >= NetworkManager.MaximumClients)
{
DebugLogger.WriteLog("Denied connection from " + clientSocket.RemoteEndPoint.ToString() + ", maximum clients already connected.");
NetworkPacket banPacket = new NetworkPacket();
banPacket.ID = "CONNECTION_RESULT".GetHashCode();
banPacket[0] = (byte)2;
banPacket[1] = (int)0;
clientConnection.SendPacket(banPacket);
clientSocket.Close();
return;
}
// Is this IP banned?
bool banned = false;
string currentIP = clientSocket.RemoteEndPoint.ToString();
if (currentIP.IndexOf(":") >= 0) currentIP = currentIP.Substring(0, currentIP.IndexOf(":"));
foreach (NetworkBan ban in NetworkManager.BansList)
{
if (ban.IsIPBanned(currentIP.ToLower()))
{
banned = true;
break;
}
}
if (banned == true)
{
DebugLogger.WriteLog("Denied connection from " + clientSocket.RemoteEndPoint.ToString() + ", IP address is banned.");
NetworkPacket banPacket = new NetworkPacket();
banPacket.ID = "CONNECTION_RESULT".GetHashCode();
banPacket[0] = (byte)1;
banPacket[1] = (int)0;
clientConnection.SendPacket(banPacket);
clientSocket.Close();
return;
}
// Work out a new unique ID for this client.
int id = 0;
while (true)
{
bool found = false;
foreach (NetworkClient subclient in _clientList)
if (subclient.ID == id) found = true;
if (found == false) break;
id++;
}
// Create a new client object to store details on this connection.
NetworkClient client = new NetworkClient();
client.Connection = clientConnection;
client.ID = id;
_clientList.Add(client);
// Ackowledge its existance.
NetworkPacket helloPacket = new NetworkPacket();
helloPacket.ID = "CONNECTION_RESULT".GetHashCode();
helloPacket[0] = (byte)0;
helloPacket[1] = id;
client.Connection.SendPacket(helloPacket);
// Log this connection.
DebugLogger.WriteLog("Accepted connection from " + clientSocket.RemoteEndPoint.ToString() + ", connection assigned id " + id);
// Throw an event.
if (ClientConnected != null) ClientConnected(this, client);
// Go back to waiting for client connections.
_socket.BeginAccept(new AsyncCallback(OnClientConnect), null);
}
catch (Exception)
{
return;
}
}
}
/// <summary>
/// Evaluates a recieved packet to see if its a internal message.
/// </summary>
/// <param name="packet">Packet that has been recieved.</param>
/// <returns>True if packet is an internal message.</returns>
private bool EvaluatePacket(NetworkPacket packet)
{
if (packet.ID == "PONG".GetHashCode())
{
_pingAverageCount++;
_pingAverageCounter += (float)_pingTimer.DurationMillisecond;
_ping = _pingAverageCounter / _pingAverageCount;
_waitingForPong = false;
return true;
}
else if (packet.ID == "PING".GetHashCode())
{
NetworkPacket pongPacket = new NetworkPacket();
pongPacket.ID = "PONG".GetHashCode();
SendPacket(pongPacket);
return true;
}
return false;
}
/// <summary>
/// Sends a packet down this connection.
/// </summary>
/// <param name="packet">Packet to send down this connection.</param>
public void SendPacket(NetworkPacket packet)
{
if (_socket == null || (_socket.Connected == false && _isListening == false && _isConnected == true))
return;
try
{
byte[] data = packet.Encode();
_socket.Send(data);
_bytesSent += data.Length;
_globalBytesSent += data.Length;
}
catch (Exception) {}
}
/// <summary>
/// Waits until a given packet is recieved and returns it.
/// </summary>
/// <param name="id">ID of packet to recieve. -1 for first available packet.</param>
/// <param name="timeout">Maximum time to wait for packet.</param>
/// <returns>Recieved packet.</returns>
public NetworkPacket RecievePacket(int id, int timeout)
{
_asyncRecievePacketID = id;
_asyncRecievePacket = null;
HighPreformanceTimer timer = new HighPreformanceTimer();
while (true)
{
if (_asyncRecievePacket != null)
return _asyncRecievePacket;
Thread.Sleep(1);
Application.DoEvents();
if (timer.DurationMillisecond > timeout)
return null;
}
}
/// <summary>
/// Updates this connection.
/// </summary>
public void Poll()
{
// Any clients disconnected?
lock (_clientList)
{
ArrayList disconnectedList = new ArrayList();
foreach (NetworkClient client in _clientList)
if (client.Connection.Connected == false)
disconnectedList.Add(client);
foreach (NetworkClient client in disconnectedList)
{
_clientList.Remove(client); // Well kiss my arse to.
if (ClientDisconnected != null) ClientDisconnected(this, client);
DebugLogger.WriteLog("Client, id " + client.ID + ", was disconnected.");
}
}
// Have we disconnected?
if (_socket.Connected == false && _isListening == false && _isConnected == true)
{
if (Disconnected != null)
Disconnected(this);
_isConnected = false;
}
if (_isConnected == true)
{
// Only bother with pings if we are not listening.
if (_isListening == false)
{
// Not recieved a pong in the last (PingDelay * 2)? Something must have gone wrong, lets resend the packet.
if (_pingTimer.DurationMillisecond > 60000 && _waitingForPong == true)
_waitingForPong = false;
// Time to sent a ping packet to this client?
if (_pingDelayTimer.DurationMillisecond > (NetworkManager.PingDelay * 2) && _waitingForPong == false)
{
_pingTimer.Restart();
_pingDelayTimer.Restart();
_waitingForPong = true;
// Lets send a pong message to the server.
NetworkPacket pingPacket = new NetworkPacket();
pingPacket.ID = "PING".GetHashCode();
SendPacket(pingPacket);
}
}
}
}
/// <summary>
/// Broadcasts a packet to all clients.
/// </summary>
/// <param name="packet">Packet to broadcast.</param>
public void BroadcastPacket(NetworkPacket packet)
{
lock (_clientList)
{
foreach (NetworkClient client in _clientList)
client.Connection.SendPacket(packet);
}
}
/// <summary>
/// Invoked when a packet is recieved.
/// </summary>
/// <param name="connection">Connection that was disconnected.</param>
/// <param name="packet">Packet that was recieved.</param>
void OnPacketRecieved(object connection, NetworkPacket packet)
{
EvaluatePacket(packet);
if (PacketRecieved != null) PacketRecieved(this, packet);
}
/// <summary>
/// Evaluates the given packet and executes the correct code based on what it contains.
/// </summary>
/// <param name="packet">Packet to evaluate.</param>
public void EvaluatePacket(NetworkPacket packet)
{
}
/// <summary>
/// Invoked when a packet is recieved.
/// </summary>
/// <param name="sender">Connection hat packet was recieved by.</param>
/// <param name="packet">Packet that was recieved.</param>
private static void OnPacketRecieved(object sender, NetworkPacket packet)
{
EvaluatePacket(packet);
if (PacketRecieved != null) PacketRecieved(sender, packet);
}
/// <summary>
/// Evaluates the given packet and executes the correct code based on what it contains.
/// </summary>
/// <param name="packet">Packet to evaluate.</param>
public static void EvaluatePacket(NetworkPacket packet)
{
if (packet.ID == "CONNECTION_RESULT".GetHashCode() && _isServer == false)
{
_connectionResult = (byte)packet[0];
switch ((byte)packet[0])
{
case 0: // Success.
_id = (int)packet[1];
break;
case 1: // Banned.
if (_connection.Connected == true) _connection.Close();
DebugLogger.WriteLog("Unable to connect to server, IP is banned.", BinaryPhoenix.Fusion.Runtime.Debug.LogAlertLevel.Warning);
break;
case 2: // To many clients.
if (_connection.Connected == true) _connection.Close();
DebugLogger.WriteLog("Unable to connect to server, maximum amount of clients are already connected.", BinaryPhoenix.Fusion.Runtime.Debug.LogAlertLevel.Warning);
break;
}
}
else if (packet.ID == "CONSOLE_COMMAND".GetHashCode() && _isServer == false)
{
DebugLogger.WriteLog("Executing console command sent by server.");
Runtime.Console.Console.ProcessCommand(packet[0].ToString());
}
}
public NetworkPacketScriptObject(NetworkPacket packet)
{
_nativeObject = packet;
}
/// <summary>
/// Invoked when a packet is recieved by the network manager.
/// </summary>
/// <param name="sender">Connection that packet was connected from.</param>
/// <param name="packet">Packet that was recieved.</param>
void PacketRecieved(object sender, NetworkPacket packet)
{
foreach (ScriptProcess process in VirtualMachine.GlobalInstance.Processes)
{
NetworkPacketScriptObject packetSO = new NetworkPacketScriptObject(packet);
NetworkConnectionScriptObject connectionSO = new NetworkConnectionScriptObject(sender as NetworkConnection);
foreach (ScriptThread thread in process.Threads)
{
thread.PassParameter(connectionSO);
thread.PassParameter(packetSO);
thread.InvokeFunction("OnPacketRecieved", true, false);
}
}
}
/// <summary>
/// Kicks a client from the network when the kick button is pressed.
/// </summary>
/// <param name="sender">Object that invoked this event.</param>
/// <param name="e">Reason why this event was invoked.</param>
private void kickPeerButton_Click(object sender, EventArgs e)
{
string selectedPeer = "";
int clientID = 0;
if (peerListView.SelectedItems.Count != 0)
selectedPeer = peerListView.SelectedItems[0].Text;
if (int.TryParse(selectedPeer, out clientID) == false)
return;
NetworkPacket packet = new NetworkPacket();
packet.ID = "KICK".GetHashCode();
foreach (NetworkClient client in NetworkManager.Connection.ClientList)
if (client.ID == clientID)
{
client.Connection.SendPacket(packet);
client.Connection.Close();
}
DebugLogger.WriteLog("Kicking client " + clientID + ".");
}
/// <summary>
/// Executes the current console command on all remote machines.
/// </summary>
/// <param name="sender">Object that invoked this event.</param>
/// <param name="e">Reason why this event was invoked.</param>
private void consoleExecuteRemoteButton_Click(object sender, EventArgs e)
{
if (consoleClientIDCheckbox.Checked == true)
{
int clientID = 0;
if (consoleClientIDTextBox.Text == "" || int.TryParse(consoleClientIDTextBox.Text, out clientID) == false) return;
NetworkPacket packet = new NetworkPacket();
packet.ID = "CONSOLE_COMMAND".GetHashCode();
packet[0] = consoleTextBox.Text;
foreach (NetworkClient client in NetworkManager.Connection.ClientList)
if (client.ID == clientID) client.Connection.SendPacket(packet);
DebugLogger.WriteLog("Executing remote console command '" + consoleTextBox.Text + "' on client "+clientID+".");
consoleTextBox.Text = "";
}
else
{
NetworkPacket packet = new NetworkPacket();
packet.ID = "CONSOLE_COMMAND".GetHashCode();
packet[0] = consoleTextBox.Text;
NetworkManager.Connection.BroadcastPacket(packet);
DebugLogger.WriteLog("Executing remote console command '" + consoleTextBox.Text + "'.");
consoleTextBox.Text = "";
}
}
