I don't see anything really wrong in what you describe. Except maybe StrPas
which is a string handling function that shouldn't used with binary data as
HTTP can send. Use Move instead.
You can do better than use TTimer, but using them is not a problem for sure.
If you suspect ListView to be the problem, just replace it by a simpler
component such as TMemo just for testing. If problem goes away, then you'll
know where the problem is.
I understod that you didn't use any thread. That's perfect. However if you
use thread, care must be taken because most VCL is not thread safe and you
must synchronize.
Contribute to the SSL Effort. Visit http://www.overbyte.be/eng/ssl.html
--
[EMAIL PROTECTED]
The author for the freeware multi-tier middleware MidWare
The author of the freeware Internet Component Suite (ICS)
http://www.overbyte.be
- Original Message -
From: Ann [EMAIL PROTECTED]
To: twsocket@elists.org
Sent: Friday, September 09, 2005 8:12 PM
Subject: [twsocket] HTTPCli.GetAsync problem.
Ok. I made simple application based on Http.GetAsync function.
Heres what i got:
Components:
-TList_1 - List of busy components
-TList_2 - List of free components
-HTTPCli - 30 more created dynamicly
-TStringList - a queue of hosts to gather data from
-ListView - table to store gathered data
-Timer_1 - to make threads workin'
-Timer_2 - to check all over again
-ToolBar - tools to save the list, load list etc etc.
-StatusBar - to show how many components are in use
-ProgressBar - shows the progress of current job
-CoolTrayIcon - to be able to minimalize app to tray
Here's how it works:
At startup 30 HTTP components are being created and added to
TList_2. U can add new hosts to gather data, and they appear in
TStringList. When timer ticks it checks if there is something in
TStringList (queue) and if there are any components in TList_2
(free). If there are, it moves HTTPCli component from TList_2 (free)
to TList_1 (busy) and uses it to GetAsync required data. Data isn't
to large so I'm gathering it OnDocData converting buffer with
strpas() function. Then some function searches the ListView for
requested record and changes the value to current. And when its
done, component is moved back to TList_2 (free components). After
all records are done, Timer_2 starts and counts 1 minute to start
another cycle (to keep the data in ListView up-to-date).
But...
But there seems to be a problem... don't know exacltly what is it,
but after few hours of working (i guess minimalized to tray) after
Application.restore, toolbar, and sometimes statusbar dissapear! I
checked it with WinDowse and those objects are just being destroyed
or something - they are not there even hidden... Oh... and after
closing application it often crashes and sometimes crashes without
closing with access violation. Any ideas what could possibly be
wrong?
My idea is that when 2 HttpCli components are trying to access
ListView, something bad happens... but not sure if thats the
problem...
Please HELP! :)
Ann
--
To unsubscribe or change your settings for TWSocket mailing list
please goto http://www.elists.org/mailman/listinfo/twsocket
Visit our website at http://www.overbyte.be
--
To unsubscribe or change your settings for TWSocket mailing list
please goto http://www.elists.org/mailman/listinfo/twsocket
Visit our website at http://www.overbyte.be
