//Broadcast the message to the recipients
public void Broadcast(Chat.Packet packet, Chat.Users recipients)
{
//If the dataset is Nothing, broadcast to everyone
if (recipients == null)
{
foreach (DictionaryEntry c in AllClients)
{
//Broadcast the message to all users
((Server)c.Value).SendMessage(packet);
}
}
else
{
//Broadcast to selected recipients
foreach (DictionaryEntry c in AllClients)
{
foreach (Chat.User usr in recipients.List)
{
if (((Server)c.Value)._clientName == usr.Name)
{
//Send message to the recipient
((Server)c.Value).SendMessage(packet);
//---log it locally
//Console.WriteLine("sending -----> " & message)
break; // TODO: might not be correct. Was : Exit For
}
}
}
}
}
public void ReceiveMessage(IAsyncResult ar)
{
//Read from client
int bytesRead = 0;
try
{
if (_client.Connected == true)
{
lock (_client.GetStream())
{
bytesRead = _client.GetStream().EndRead(ar);
}
//Client disconnected
if (bytesRead < 1)
{
sessionEnded(_clientIP);
return;
}
else
{
//The message received from the remote client
string messageReceived = System.Text.Encoding.ASCII.GetString(data, 0, bytesRead);
// Deserialize the packet
Chat.Packet packet = new Chat.Packet();
packet = (Chat.Packet)Chat.Deserialize(messageReceived, packet.GetType());
Chat.Users recipients = new Chat.Users();
switch (packet.ID)
{
case Chat.MSGType.Join:
Chat.User usr = (Chat.User)packet.Content;
_clientName = usr.Name;
// Add the user set to receive a full list of user
recipients.List.Add(usr);
Chat.Users usrs = new Chat.Users();
foreach (DictionaryEntry c in AllClients)
{
Chat.User u = new Chat.User();
u.Name = ((Server)c.Value)._clientName;
usrs.List.Add(u);
}
Chat.Packet usersListPacket = new Chat.Packet();
usersListPacket.ID = Chat.MSGType.ClientList;
usersListPacket.Content = usrs;
//Send the full user list to the user that just signed on
Broadcast(usersListPacket, recipients);
//Rebroadcast the original message to everyone that this user is online
Broadcast(packet, null);
break;
case Chat.MSGType.Message:
Chat.Message message = (Chat.Message)packet.Content;
foreach (string recipient in message.Reciptients)
{
Chat.User u = new Chat.User();
u.Name = recipient;
recipients.List.Add(u);
}
//Send the message to the recipients
Broadcast(packet, recipients);
break;
default:
break;
}
}
//Continue reading from the client
lock (_client.GetStream()) {
_client.GetStream().BeginRead(data, 0, Convert.ToInt32(_client.ReceiveBufferSize), ReceiveMessage, null);
}
}
} catch (Exception ex) {
sessionEnded(_clientIP);
}
}
