Application takes time to close if it calls InternetOpenA with INTERNET_OPEN_TYPE

Discussion:

Application takes time to close if it calls InternetOpenA with INTERNET_OPEN_TYPE_PRECONFIG flag

(too old to reply)

Sunil Menon

2005-12-20 08:48:51 UTC

Dear All,
We have developed an application that uses inetsdk for http
communication and have been
facing a weird problem. When our application is closed it takes nearly
one minute to go away from TaskManager or to be precise from memory.
This happens only on some machines. We have found out that we were
using InternetOpenURL api to call a WebService. Though the execution
of the process falls through, the application seems to be waiting for
some message before terminating...
We found out something very unusal....
If in my IE setting I uncheck <Automatically detect settings>, the exe
closes fast...
I check the code and it happens because I have set the flag
Set InternetAccessType = INTERNET_OPEN_TYPE_PRECONFIG
when I do
Set hInternetHandle = InternetOpenA (AppName, InternetAccessType,
sProxyString, '', ITB_INTERNET_FLAG_SYNC)
but if I set the flag as
Set hInternetHandle = InternetOpenA (AppName,
INTERNET_OPEN_TYPE_DIRECT, '', '', 0)

then even if the <Automatically detect settings> is checked, the exe
closes fast...
as per my information INTERNET_OPEN_TYPE_DIRECT is usually used for ftp
and not for htttp.
Can I use this flag for http also? What is the significane of this
switch?

Please help...

Thanks & regards
Sunil

Scherbina Vladimir

2005-12-21 20:41:01 UTC

Permalink

I've never met such problem. Do you close all HINTERNET handles before
exiting ?
--
Vladimir

Post by Sunil Menon
Dear All,
We have developed an application that uses inetsdk for http
communication and have been
facing a weird problem. When our application is closed it takes nearly
one minute to go away from TaskManager or to be precise from memory.
This happens only on some machines. We have found out that we were
using InternetOpenURL api to call a WebService. Though the execution
of the process falls through, the application seems to be waiting for
some message before terminating...
We found out something very unusal....
If in my IE setting I uncheck <Automatically detect settings>, the exe
closes fast...
I check the code and it happens because I have set the flag
Set InternetAccessType = INTERNET_OPEN_TYPE_PRECONFIG
when I do
Set hInternetHandle = InternetOpenA (AppName, InternetAccessType,
sProxyString, '', ITB_INTERNET_FLAG_SYNC)
but if I set the flag as
Set hInternetHandle = InternetOpenA (AppName,
INTERNET_OPEN_TYPE_DIRECT, '', '', 0)
then even if the <Automatically detect settings> is checked, the exe
closes fast...
as per my information INTERNET_OPEN_TYPE_DIRECT is usually used for ftp
and not for htttp.
Can I use this flag for http also? What is the significane of this
switch?
Please help...
Thanks & regards
Sunil

Sunil Menon

2005-12-23 08:07:04 UTC

Permalink

The datatype is long in Oracle...

Many regards
Sunil

Post by Scherbina Vladimir
I've never met such problem. Do you close all HINTERNET handles before
exiting ?
--
Vladimir

Sunil Menon

2005-12-23 10:35:00 UTC

Permalink

Ooops...I meant yes....we do close all handles...

Scherbina Vladimir

2005-12-23 12:11:10 UTC

Permalink

Can you attach debugger to your application and trace where it hungs ?

--
Vladimir

Post by Sunil Menon
Ooops...I meant yes....we do close all handles...