/// <summary>
/// Used to clean up the target composer from memory
/// </summary>
/// <param name="composer">The composer that has completed</param>
private void ComposerCompleted(UDPPacketComposer composer)
{
lock (pendingComposers)
{
pendingComposers.Remove(composer);
}
}
/// <summary>
/// Star the next composer available composer
/// </summary>
private void NextComposerInQueue()
{
// If there are not currently any queued composers then we can stop here
if (reliableComposers.Count == 0)
{
return;
}
// If there are no more composers in queue, end
if (!nextComposerReady)
{
return;
}
// Prevent any queued composers from starting until this one finishes
nextComposerReady = false;
lock (reliableComposers)
{
currentComposer = reliableComposers[0];
}
if (!composerReady && Networker.IsBound && !NetWorker.ExitingApplication)
{
// Run this on a separate thread so that it doesn't interfere with the reading thread
Task.Queue(() =>
{
while (Networker.IsBound && !Disconnected)
{
if (nextComposerReady)
{
Task.Sleep(10);
continue;
}
do
{
lock (currentComposer.PendingPackets)
{
if (currentComposer.PendingPackets.Count > 0)
{
if (Networker.LatencySimulation > 0)
{
Task.Sleep(Networker.LatencySimulation);
}
currentComposer.ResendPackets();
}
}
// TODO: Wait the latency for this
Task.Sleep(10);
} while (!currentComposer.Player.Disconnected && currentComposer.PendingPackets.Count > 0 && Networker.IsBound && !NetWorker.ExitingApplication);
}
});
composerReady = true;
}
}
/// <summary>
/// Used to clean up the target composer from memory
/// </summary>
/// <param name="composer">The composer that has completed</param>
protected void ComposerCompleted(UDPPacketComposer composer)
{
#if DEEP_LOGGING
Logging.BMSLog.Log($"<<<<<<<<<<<<<<<<<<<<<<<<<<< CONFIRMING: {composer.Frame.UniqueId}");
#endif
lock (pendingComposers) {
pendingComposers.Remove(composer);
}
}
public override void Send(FrameStream frame, bool reliable = false)
{
UDPPacketComposer composer = new UDPPacketComposer();
// If this message is reliable then make sure to keep a reference to the composer
// so that there are not any run-away threads
if (reliable)
{
composer.completed += ComposerCompleted;
pendingComposers.Add(composer);
}
composer.Init(this, ServerPlayer, frame, reliable);
}
public void QueueComposer(UDPPacketComposer composer)
{
if (Disconnected)
{
return;
}
lock (reliableComposers)
{
reliableComposers.Add(composer);
}
// Start the reliable send thread on this composer
NextComposerInQueue();
}
public void Send(NetworkingPlayer player, FrameStream frame, bool reliable = false)
{
UDPPacketComposer composer = new UDPPacketComposer(this, player, frame, reliable);
// If this message is reliable then make sure to keep a reference to the composer
// so that there are not any run-away threads
if (reliable)
{
lock (pendingComposers) {
// Use the completed event to clean up the object from memory
composer.completed += ComposerCompleted;
pendingComposers.Add(composer);
}
}
}
public override void Send(FrameStream frame, bool reliable = false)
{
UDPPacketComposer composer = new UDPPacketComposer();
// If this message is reliable then make sure to keep a reference to the composer
// so that there are not any run-away threads
if (reliable)
{
// Use the completed event to clean up the object from memory
composer.completed += ComposerCompleted;
pendingComposers.Add(composer);
}
//TODO: New constructor for setting up callbacks before regular constructor (as seen above)
composer.Init(this, Server, frame, reliable);
}
private void HandleMaximumClientPacketResponse(string incomingEndpoint, IPEndPoint groupEP)
{
// Tell the client why they are being disconnected
Error frame = Error.CreateErrorMessage(Time.Timestep, "Max Players Reached On Server",
false, MessageGroupIds.MAX_CONNECTIONS, false);
var playerToDisconnect = new UDPNetworkingPlayer(ServerPlayerCounter++, incomingEndpoint,
false, groupEP, this);
UDPPacketComposer.SendNewUDPPacket(this, playerToDisconnect, frame, false);
// Send the close connection frame to the client
UDPPacketComposer.SendNewUDPPacket(this, playerToDisconnect,
new ConnectionClose(Time.Timestep, false, Receivers.Target,
MessageGroupIds.DISCONNECT, false), false);
}
private void HandleNotAcceptingConnectionsPacketResponse(string incomingEndpoint, IPEndPoint groupEP)
{
// Tell the client why they are being disconnected
var frame = Error.CreateErrorMessage(Time.Timestep,
"The server is busy and not accepting connections", false,
MessageGroupIds.NOT_ACCEPT_CONNECTIONS, false);
var playerToDisconnect = new UDPNetworkingPlayer(ServerPlayerCounter++,
incomingEndpoint, false, groupEP, this);
UDPPacketComposer.SendNewUDPPacket(this, playerToDisconnect, frame, false);
// Send the close connection frame to the client
UDPPacketComposer.SendNewUDPPacket(this, playerToDisconnect,
new ConnectionClose(Time.Timestep, false, Receivers.Target,
MessageGroupIds.DISCONNECT, false), false);
}
public override void Send(FrameStream frame, bool reliable = false)
{
UDPPacketComposer composer = new UDPPacketComposer();
//如果这个信息是可靠的，那么一定要保持对作曲家的引用
//这样就没有任何失控的线程
// If this message is reliable then make sure to keep a reference to the composer
// so that there are not any run-away threads
if (reliable)
{
//使用完成的事件从内存中清理对象
// Use the completed event to clean up the object from memory
composer.completed += ComposerCompleted;
pendingComposers.Add(composer);
}
// TODO：在正则构造函数之前设置回调的新构造函数（如上所示）
//TODO: New constructor for setting up callbacks before regular constructor (as seen above)
composer.Init(this, Server, frame, reliable);
}
private void SetupClient(BMSByte packet, string incomingEndpoint, IPEndPoint groupEP)
{
// Check for a local listing request
if (packet.Size.Between(2, 4) && packet[0] == BROADCAST_LISTING_REQUEST_1 && packet[1] == BROADCAST_LISTING_REQUEST_2 && packet[2] == BROADCAST_LISTING_REQUEST_3)
{
// Don't reply if the server is not currently accepting connections
if (!AcceptingConnections)
{
return;
}
// This may be a local listing request so respond with the server flag byte
Client.Send(new byte[] { SERVER_BROADCAST_CODE }, 1, groupEP);
return;
}
if (Players.Count == MaxConnections)
{
// Tell the client why they are being disconnected
var frame = Error.CreateErrorMessage(Time.Timestep, "Max Players Reached On Server", false, MessageGroupIds.MAX_CONNECTIONS, true);
var playerToDisconnect = new UDPNetworkingPlayer(ServerPlayerCounter++, incomingEndpoint, false, groupEP, this);
var composer = new UDPPacketComposer(this, playerToDisconnect, frame, false);
// Send the close connection frame to the client
composer = new UDPPacketComposer(this, playerToDisconnect, new ConnectionClose(Time.Timestep, false, Receivers.Target, MessageGroupIds.DISCONNECT, false), false);
return;
}
else if (!AcceptingConnections)
{
// Tell the client why they are being disconnected
var frame = Error.CreateErrorMessage(Time.Timestep, "The server is busy and not accepting connections", false, MessageGroupIds.NOT_ACCEPT_CONNECTIONS, true);
var playerToDisconnect = new UDPNetworkingPlayer(ServerPlayerCounter++, incomingEndpoint, false, groupEP, this);
var composer = new UDPPacketComposer(this, playerToDisconnect, frame, false);
// Send the close connection frame to the client
composer = new UDPPacketComposer(this, playerToDisconnect, new ConnectionClose(Time.Timestep, false, Receivers.Target, MessageGroupIds.DISCONNECT, false), false);
return;
}
// Validate that the connection headers are properly formatted
byte[] response = Websockets.ValidateConnectionHeader(packet.CompressBytes());
// The response will be null if the header sent is invalid, if so then disconnect client as they are sending invalid headers
if (response == null)
{
return;
}
UDPNetworkingPlayer player = new UDPNetworkingPlayer(ServerPlayerCounter++, incomingEndpoint, false, groupEP, this);
// If all is in order then send the validated response to the client
Client.Send(response, response.Length, groupEP);
OnPlayerConnected(player);
udpPlayers.Add(incomingEndpoint, player);
// The player has successfully connected
player.Connected = true;
}
