private async Task <bool> ProcessMessage(IMessage message, NetworkStream stream)
{
if (message is ConnectRequestMessage)
{
var connectRequestMessage = message as ConnectRequestMessage;
var newMsg = new NewUserOnlineMessage()
{
UserId = connectRequestMessage.UserId
};
_clientWriter.WriteMessageToAllClients(newMsg);
var existingConn = _clientsHolder.ClientConnections.FirstOrDefault(c => c.UserId == newMsg.UserId);
if (existingConn != null)
{
_clientDisconnector.UserDisconnected((ushort)existingConn.UserId);
}
var connection = new ClientConnection(connectRequestMessage.UserId, stream);
await NotifyNewUserOfOtherConnections(connection);
_clientsHolder.ClientConnections.Add(connection);
System.Console.WriteLine("Client joined with ID: " + connectRequestMessage.UserId);
return(true);
}
return(false);
}
private async Task NotifyNewUserOfOtherConnections(IClientConnection connection)
{
await Task.Run(async() =>
{
var connections = _clientsHolder.ClientConnections.TakeCopy();
foreach (var conn in connections)
{
Console.WriteLine("notfying new user: "******" about existing user: " + conn.UserId);
var msg = new NewUserOnlineMessage {
UserId = (ushort)conn.UserId
};
await _networkDataService.WriteAndEncodeMessageWithHeader(msg, connection.Stream);
}
});
}
private async Task NewUserOnline(NewUserOnlineMessage newUserOnlineMessage)
{
using (var uow = new UnitOfWork(new SocketDbContext()))
{
var user = await uow.SocketUserRepo.SingleOrDefaultAsync(u => u.Id == newUserOnlineMessage.UserId);
if (user != null)
{
System.Windows.Application.Current.Dispatcher.Invoke(() =>
{
AddUser(user);
});
if (!_chatManager.Chats.ContainsKey(user.Id))
{
_chatManager.Chats.Add(user.Id, new List <ChatMessageModel>());
}
}
}
}
public async Task <IMessage> ReadAndDecodeMessage(Header header, NetworkStream networkStream)
{
byte[] dataBuffer = new byte[header.MessageSize];
await networkStream.ReadAsync(dataBuffer, 0, dataBuffer.Length);
Console.WriteLine("message type being read in network service: " + header.MessageType);
var dataBufferList = dataBuffer.ToList();
switch (header.MessageType)
{
case MessageType.NotSet:
return(null);
case MessageType.Connect:
return(ConnectRequestMessage.Decode(dataBufferList));
case MessageType.Chat:
return(ChatMessage.Decode(dataBufferList));
case MessageType.Image:
return(ImageMessage.Decode(dataBufferList));
case MessageType.NewUserOnline:
return(NewUserOnlineMessage.Decode(dataBufferList));
case MessageType.UserLogoff:
return(UserLogoffMessage.Decode(dataBufferList));
case MessageType.UserOffline:
return(UserOfflineMessage.Decode(dataBufferList));
case MessageType.Typing:
return(UserTypingMessage.Decode(dataBufferList));
default:
throw new ArgumentOutOfRangeException();
}
}
