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<tsokas@gmail.com> wrote in message
news:1160465153.402484.273810@h48g2000cwc.googlegroups.com...

> I'm trying to use the TIdHTTP component in a thread like this:

You are not protecting the thread from exceptions.  You should wrap the call
to Get() in a try..catch or try..finally block, or use the STL's auto_ptr
class, to ensure that the TIdHTTP is freed properly even when Get() throws
an exception when the download fails.

> Then, during runtime (I use CodeGuard) it pops an
> EOutOfMemory exception and then it prompts to line "AnsiString dummy =
> .......".

How much data are you actually downloading from the URL?


Gambit

Hi Remy, thanks indeed for your quick answers...

> You are not protecting the thread from exceptions.  You should wrap the call
> to Get() in a try..catch or try..finally block, or use the STL's auto_ptr
> class, to ensure that the TIdHTTP is freed properly even when Get() throws
> an exception when the download fails.

In fact the code I presented is actually a small project I created just
to figure out what is going wrong. The problem appeared in a larger
project, in which I do use auto_ptr's and try-catch blocks.

The idea is to use 50 or more threads to download chunks of the same
file (segmented doanloading) using IdHTTP's ContentRangeStart and
ContentRangeEnd facility (the server I'm testing my program against
does support this facility).

> How much data are you actually downloading from the URL?

The file I'm testing the project with is 18MB.

Nicolas

tsokas@gmail.com schrieb:
> Then, during runtime (I use CodeGuard) it pops an
> EOutOfMemory exception and then it prompts to line "AnsiString dummy =
> .......".
> 
> Is it some incompatibility between Indy and CodeGuard? Or CodeGuard
> just messes
> things when going multi-threaded?...

I don't know which version of BCB you are using, however I also 
experienced problems with CodeGuard and multi-threaded apps in BCB5.

Regards
Frank.

> I don't know which version of BCB you are using, however I also
> experienced problems with CodeGuard and multi-threaded apps in BCB5.

I use BCB 6.0.

Yes, I have the impression that this is about CodeGuard and
multi-threaded applications...

Thanks Frank,

Nicolas

<tsokas@gmail.com> wrote in message
news:1160470350.947063.299430@b28g2000cwb.googlegroups.com...

> The file I'm testing the project with is 18MB.

That is a LOT of data to stuff into an AnsiString.  That is likely the cause
of your problem.  Try using a TStream instead, such as a TMemoryStream, for
example:

    #include <memory>

    void __fastcall TMyThread::Execute()
    {
        std::auto_ptr<TIdHTTP> HTTP(new TIdHTTP(NULL));
        std::auto_ptr<TMemoryStream> Stream(new TMemoryStream);
        HTTP->Get("http://some_url", Stream.get());
    }


Gambit

Ο/Η Remy Lebeau (TeamB) έγραψε:
> <tsokas@gmail.com> wrote in message
> news:1160470350.947063.299430@b28g2000cwb.googlegroups.com...
>
> > The file I'm testing the project with is 18MB.
>
> That is a LOT of data to stuff into an AnsiString.  That is likely the cause
> of your problem.  Try using a TStream instead, such as a TMemoryStream, for
> example:
>
>     #include <memory>
>
>     void __fastcall TMyThread::Execute()
>     {
>         std::auto_ptr<TIdHTTP> HTTP(new TIdHTTP(NULL));
>         std::auto_ptr<TMemoryStream> Stream(new TMemoryStream);
>         HTTP->Get("http://some_url", Stream.get());
>     }
>
>
> Gambit

Remy,

I replaced the code in TMyThread with the one above and it keeps on
throwing that EOutOfMemory Exception and prompting at line
HTTP->Get("http://some_url", Stream.get());

Does it run ok at your computer? With CodeGuard on? If so I may have to
reinstall BCB (?).

Thanks,

Nicolas