Hi!
I am running a TidHTTP Post on a secondary thread, and I have a procedure to
manually close the socket from the primary thread (see the code below).
1) If TmyThread.Cancel is called on thread #1 whilst thread #2 is in the
code blocks AAA or BBB, then it is possible that thread #2 might hit
FreeAndNil(fHttp) whilst thread #1 is inside fHttp.Disconnect (thus causing
an exception). => Is this a real risk with Indy? And if so, do I need to use
a critical section or something?
2) The fHttp.Disconnect on thread #1 should presumably cause the fHttp.Post
on thread #2 to exit with an exception; I never programmed anything before
where a call on one thread might cause an exception on another thread: => Is
this practice Ok?
procedure TmyThread.Execute;
begin
fHttp := TIdHttp.Create(...
try
.. do stuff
try
..
fHttp.Post(...
.. AAA
except
.. BBB
end;
finally
FreeAndNil(fHttp);
end;
end;
procedure TmyThread.Cancel;
begin
if Assigned(fHttp) and fHttp.Connected then
fHttp.Disconnect;
end;
Regards,
AndrewFG
