Yup, the messages never overlap each other, but they can overlap the 'edge' of individual receive calls.
TCP Server NetworkModel for MUD
Think of it this way: Reading from a TCP stream is like reading from a file where you cannot seek.
How would you read your message data from a file? You'd have to know how much to read before you read it. So, make it so!
How would you read your message data from a file? You'd have to know how much to read before you read it. So, make it so!
Author
Haven't forgot about this. Real life and computer problems and all that. Will update my program soon and post changes, hopefully this weekend.
You don't need 2 separate and different calls to Client.WorkSocket.BeginReceive. One of the existing calls has a logic error, currently. Consider some edge cases to work out which one it is, and consider consolidating that logic into one call. Apart from that, it appears that it will do the right thing.
Author
Okay, changed it up. Wow. Lot shorter.
private void GetMessage(ClientInfo Client)
{
int TermLoc = 0;
TermLoc = Array.IndexOf(Client.Buffer, FOOTERVAL);
if (TermLoc > -1)
{
//Translate buffer, parse message and send it to game loop
PassMessage(Client, e.GetString(Client.Buffer, 0, TermLoc));
//Remove received message and look for more
Client.AmountHeld -= TermLoc + 1;
Array.Copy(Client.Buffer, TermLoc + 1, Client.Buffer, 0, Client.AmountHeld);
}
Client.WorkSocket.BeginReceive(Client.Buffer, Client.AmountHeld, BUFFER_SIZE - Client.AmountHeld, SocketFlags.None,
new AsyncCallback(ReceiveMessage), Client);
}
I was trying to work WAY too hard before. I think this pretty much solves all my problems.
That's right! TCP is very much like a file -- data is in order, and guaranteed. It's like a file that you can't seek backwards or forwards in, just read bytes from.I'm wondering why message overlap is even a problem in a TCP stream? The data is always in order and guaranteed.
If you were to read a sequence of commands from a file, how would you know how many bytes to read for each command? Reading from a TCP stream is very similar to that.
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