<< See TTcpSrvForm.WSocketServer1ClientConnect in TcpSrv1.pas source.>>
When I try to use that code, I get an EInvalidCast error, specifically,
"EInvalidCast - Invalid class typecast" on this line:
with Client as TTcpSrvClient do begin
of the OnClientConnect() event handler.
And this even though my class definition and OnClientConnect() code were
copied verbatim from the TcpSrv1.pas.
I have also copied most of the code from the TcpSrv1 unit, including but not
limited to:
procedure ClientDataAvailable(Sender: TObject; Error: Word);
procedure ClientBgException(Sender : TObject;
E : Exception;
var CanClose : Boolean);
procedure ClientLineLimitExceeded(Sender : TObject;
Cnt : LongInt;
var ClearData : Boolean);
procedure WMAppStartup(var Msg: TMessage); message WM_APPSTARTUP;
Why would I get EInvalidCast when TcpSrv doesn't, although the cast and the
custom class are the same?
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Francois PIETTE
Sent: Monday, November 20, 2006 2:19 PM
To: ICS support mailing
Subject: Re: [twsocket] Which TWSocketServer event to capture data sent?
> Which TWSocketServer event should I code to retrieve incoming data?
None !
Data doesn't come from TWSocketServer but from one TWSocketClient (another
TWSocket derived class) which is instanciated for each incomming connection.
See how it works in TcpSrv sample program.
> The two that fire when I send the data are:
> 1) WSocketServerSessionAvailable()
> 2) WSocketServerClientConnect()
Normal for a listening socket.
> It seems the WSocketServerDataAvailable() and/or WSocketServerDataSent()
> events should fire.
Defenitely not !
> Do I need to do anything with the TWSocketServer
> component to get these to fire, or can I safely read the incoming data in
> one of the two events above (Once a connection is made, data will be sent
> multiple times, so I don't know if those events get called over and over,
> or.?
See TTcpSrvForm.WSocketServer1ClientConnect in TcpSrv1.pas source. This
event handler associate an OnDataAvailable event handler to the
TWSocketClient instance created by the server component to handle a client
connection.
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