Is it's safe to destroy TSslHttpCli while http request in progress ?

[Max Terentiev 0]

Hi,

 

I create and use TsslHttpCli like this:

 

Http=new TSslHttpCli(NULL);
SslContext=new TSslContext(NULL);
Http->SslContext=SslContext;

Http->OnRequestDone=HttpRequestDone;
Http->URL="https://api.server.ru/api/data-list/";
Http->GetASync();

If I call GetASync() can I destroy TsslHttpCli at any time before they fire OnRequestDone event ? For example, if user close program can I run code like this:

 

delete Http; // or Http.Free; on pascal

Or I must call TsslHttpCli.Abort or AbortComponent and wait until they ready for destruction (in this case - how to understand is it's ready for destruction)?

 

Thanks for help !

 

[FPiette 383]

You should not destroy the component from an event handler of that component (general rule, not specific of ICS) or you'll experience access violation or other strange behavior.

From an event handler, you can defer the destroy using a PostMessage of a custom message. That is what TForm.Release does by the way.

 

[Max Terentiev 0]

So, I can destroy TsslHttpCli from any another application event (like CancelButton.OnClick, Form.OnClose, etc) without any special care ? No matter is TsslHttpCli idle or process some request ?

[FPiette 383]

Yes. The remote site will experience and abort error if a transfer is occurring.

[Max Terentiev 0]

Thank you very much for help !