Difference between revisions of "TWSocket.LineMode"
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If the client always sends data lines which end on CR/LF and the server shall display the lines individually in a memo, the server would set LineMode to true so that he always receives whole lines without needing to look for the end of a line himself. | If the client always sends data lines which end on CR/LF and the server shall display the lines individually in a memo, the server would set LineMode to true so that he always receives whole lines without needing to look for the end of a line himself. | ||
| + | <syntaxhighlight lang="delphi"> | ||
Socket.LineLimit:=100; // prevent denial of service or buffer | Socket.LineLimit:=100; // prevent denial of service or buffer | ||
// overflows | // overflows | ||
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// combination | // combination | ||
Socket.LineMode:=true; | Socket.LineMode:=true; | ||
| + | </syntaxhighlight> | ||
In [[TWSocket.OnDataAvailable|OnDataAvailable]] ReceiveStr is used to fetch the available data packet by packet. | In [[TWSocket.OnDataAvailable|OnDataAvailable]] ReceiveStr is used to fetch the available data packet by packet. | ||
Revision as of 20:34, 1 July 2010
Main page -> ICS component reference -> TWSocket -> LineMode
Definition
property LineMode: boolean;
Description
If set to true, LineMode enables automatic splitting of received data into packets based on a user definable char sequence.
Example
If the client always sends data lines which end on CR/LF and the server shall display the lines individually in a memo, the server would set LineMode to true so that he always receives whole lines without needing to look for the end of a line himself.
<syntaxhighlight lang="delphi">
Socket.LineLimit:=100; // prevent denial of service or buffer
// overflows
Socket.LineEnd :=chr(10)+chr(13); // the sender has to terminate all
// messages sent with this character
// combination
Socket.LineMode:=true;
</syntaxhighlight>
In OnDataAvailable ReceiveStr is used to fetch the available data packet by packet.
Best practices
Always set LineLimit to prevent buffer overflows.
