public static async Task Main(string[] args)
{
// Get the IP address to bind to as a command line arguement or default
// to 127.0.0.1.
var userSuppliedIp = args.Length < 1 ? "127.0.0.1" : args[0];
// Require the IP address be supplied as a command line argument.
var localIp = IPAddress.Parse(userSuppliedIp);
var localEndPoint = new IPEndPoint(localIp, BspConstants.DefaultPort);
// Begin listening for clients attempting to discover the server IP
_ = StartUdpListing(localEndPoint);
// Create objects used for every connection.
var generalLogger = new Logger(Console.Out);
var unparser = new MessageUnparser();
var listener = new BspListener(generalLogger);
var gameTypeRepo = CreateGameTypeRepository();
var userRepo = CreateUserRepository();
var matchMaker = new MatchMaker();
// The body of this foreach loop is a callback. This body will run for
// connection our listener accepts. Here we create objects specific for
// each connection.
await foreach (var socket in listener.StartListeningAsync(localEndPoint))
{
// Create a logger that will log with the client's EndPoint.
var logger = new EndPointLogger(Console.Out, socket.RemoteEndPoint);
// Create a disconnecter that can clean up a connection.
var disconnecter = new ServerDisconnecter(logger, socket, userRepo, matchMaker);
// Create a sender for sending messages to the client.
var senderHandler = new MultiMessageHandler();
var sender = new BspSender(socket, logger, unparser, senderHandler);
// Create a container for this connections state.
var container = new ServerNetworkStateContainer(sender, disconnecter, gameTypeRepo,
userRepo, matchMaker);
// Create a context for our state machine.
var context = new NetworkStateContext(container, disconnecter);
// Register incoming messages with this context.
senderHandler.AddHandler(LoggingMessageHandler.ForSending(logger));
senderHandler.AddHandler(new SentMessageHandler(context));
// Register outgoing messages with this context.
var receiverHandler = new MultiMessageHandler();
receiverHandler.AddHandler(LoggingMessageHandler.ForReceiving(logger));
receiverHandler.AddHandler(new ReceiveMessageHandler(context));
// Create a parser for this connection
var parser = new MessageParser(receiverHandler, gameTypeRepo);
// Begin asynchronously receiving messages
var receiver = new BspReceiver(socket, disconnecter, parser, logger);
_ = receiver.StartReceivingAsync();
}
}
public static async Task Main(string[] args)
{
// Create a logger
var logger = new Logger(Console.Out);
// If the user did not supply an IP or hostname, attempt to
// discover a server on the same subnet.
IPEndPoint endPoint;
if (args.Length > 0)
{
if (IPAddress.TryParse(args[0], out var ip))
{
endPoint = new IPEndPoint(ip, BspConstants.DefaultPort);
}
else
{
// Maybe the user supplied a hostname not an IP
var addresses = Dns.GetHostAddresses(args[0]);
if (addresses.Length < 1)
{
Console.WriteLine("Could not find hostname.");
return;
}
endPoint = new IPEndPoint(addresses.Last(), BspConstants.DefaultPort);
}
}
else
{
logger.LogInfo("Attempting to discover server end point...");
endPoint = await DiscoverServerEndPoint(BspConstants.DefaultPort);
}
// Attempt to connect to the server.
var unparser = new MessageUnparser();
var socket = new Socket(SocketType.Stream, ProtocolType.Tcp);
try
{
logger.LogInfo($"Attempting to connect to {endPoint}");
socket.Connect(endPoint);
}
catch (SocketException)
{
logger.LogError($"Failed to connect to {endPoint}");
}
// Create a disconnecter that can clean up a connection.
var disconnecter = new ClientDisconnecter(logger, socket);
// Create a sender for sending to the server.
var senderHandler = new MultiMessageHandler();
var sender = new BspSender(socket, logger, unparser, senderHandler);
// Create a prompter to handle user interaction.
var prompter = new Prompter(sender);
// Create a state machine
var container = new ClientNetworkStateContainer(prompter);
var context = new NetworkStateContext(container, disconnecter);
// Register sending messages with our state machine.
senderHandler.AddHandler(LoggingMessageHandler.ForSending(logger));
senderHandler.AddHandler(new SentMessageHandler(context));
// Register receiving messages with our state machine.
var receiverHandler = new MultiMessageHandler();
receiverHandler.AddHandler(LoggingMessageHandler.ForReceiving(logger));
receiverHandler.AddHandler(new ReceiveMessageHandler(context));
// Create a parser for our connection with the server
var parser = new MessageParser(receiverHandler, new GameTypeRepository());
var receiver = new BspReceiver(socket, disconnecter, parser, logger);
// Begin receive messages and start the prompt.
var receivingTask = receiver.StartReceivingAsync();
prompter.PromptLogOn();
await receivingTask;
}