// Private constructor - Clients can only be created by calling
// the Create static method provided way below
private Client(ConnectMessage m, Socket Connection)
{
Username = m.Username;
ComputerName = m.ComputerName;
this.Connection = Connection;
Stream = new NetworkStream(Connection);
In = new NetReader(Stream);
Out = new NetWriter(Stream);
MessageReceived = delegate { };
Disconnect = delegate { };
}
// Attempts to connect to a specified server with a given connection message
public bool Connect(IPEndPoint Server, ConnectMessage ConnectionMessage)
{
// Initialise socket for TCP/IP communications
Inner = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
try
{
// Try to connect
Inner.Connect(Server);
// Set up IO streams around the socket
Stream = new NetworkStream(Inner);
In = new NetReader(Stream);
Out = new NetWriter(Stream);
// Send off the initial connection message
Send(ConnectionMessage);
// Begin reading from the Server
StartRead();
return true;
}
catch
{
return false;
}
}
// Alternative overloaded signature for next function
public bool Connect(string ServerAddress, ushort Port, ConnectMessage ConnectionMessage)
{
IPAddress Target;
if (!IPAddress.TryParse(ServerAddress, out Target))
return false;
return Connect(new IPEndPoint(Target, Port), ConnectionMessage);
}
// Initialise the database model from the server
public static Tuple<User, Room> Initialise(Connection Server, ConnectMessage Msg)
{
try
{
// Thread safe
Monitor.Enter(Lock);
// Reset the signal that's set when the data's received
if (InitialisedEvent == null)
InitialisedEvent = new ManualResetEvent(false);
InitialisedEvent.Reset();
// Reset the signal that's set when the user information's received
if (UserEvent == null)
UserEvent = new ManualResetEvent(false);
UserEvent.Reset();
// Set the current server
DataRepository.Server = Server;
// Hook up network events
Server.MessageReceived += MessageReceived;
Server.Disconnect += Disconnected;
// Hook up data changed events
_Bookings.CollectionChanged += Data_CollectionChanged;
_Departments.CollectionChanged += Data_CollectionChanged;
_Rooms.CollectionChanged += Data_CollectionChanged;
_Users.CollectionChanged += Data_CollectionChanged;
_Subjects.CollectionChanged += Data_CollectionChanged;
_Periods.CollectionChanged += Data_CollectionChanged;
_Classes.CollectionChanged += Data_CollectionChanged;
// Send the connection message
Server.Send(Msg);
}
catch
{
return null;
}
finally
{
// Release the lock
Monitor.Exit(Lock);
}
try
{
// Wait for both signals to fire, signalling completion
InitialisedEvent.WaitOne();
UserEvent.WaitOne();
}
catch
{
// Disconnected during initialise
return null;
}
// Return the User and their Room (grouped together for easy return value)
return new Tuple<User, Room>(CurrentUser, CurrentRoom);
}
