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Robert T · Guest

Hi

I Send Specific messages that trigger procedures on my remote computer.
The problem I am getting is that sometimes the readtext returns 2 messages
in one ie : Remote pc sends "Waiting For Completion" and "Confirmed".
Readtext gets "Waiting For CompletionConfirmed"

procedure TftpForm.ServerSocket1ClientRead(Sender: TObject;
Socket: TCustomWinSocket);
var
AnswerText : String;
begin
AnswerText := Socket.ReceiveText;
GenerateResponse(AnswerText);
end;

How can I prevent this?

Thanks

Martin James · Guest

TCP transfers a stream of bytes. If you send a 100 byte buffer, this could
be recieved as one 100-byte buffer, 100 1-byte buffers or anything in
between. Similarly, if you send 100 1-byte buffers, it could be received as
a single 100-byte buffer.

You need another protocol on top of TCP if you wnat to send lines of text
and receive/process them as individual lines. Adding a CRLF at then end of
each send string and using 'ReadLn' at the receive end is one common way.

Rgds,
Martin