DSRestConnection to a user and password protected server on https on android

I did some more testing and it look's like a serious problem.

Authentication doesn't work on Android even if:

• Using standard http on port 80
• Trying other types of Authentication standards on IIS like Digest Authentication
• Using TNetHTTPClient component with proper "OnAuthEvent" instead of TDSRestConnection component

Also, it's not 100% on an iOS Device, the first attempt always causes a "HTTP/1.1 403 forbidden" exception, following attempts works without any errors. I think this error could be related to this reported bug https://quality.embarcadero.com/browse/RSP-11247 but with my limited C++ knowledge I don't know how to add custom headers to the TNetHTTPClient as suggested in the comments.

Hi Pawel!

It's C++ Builder 10.2 Enterprise edition. The Android device (Samsung Galaxy S6 have version 7.0 installed), Android SDK is 25.2.5

On Android I was forced to call the DataSnap request on a separate thread, as android doesn't seem to like making network requests from the main thread.

Another annoying "feature" is that after adding DataSnap features the app crashes while being idle after about 15 minutes or so. Doesn't feel very stable.

void __fastcall TMainForm::ThreadFunction(void)

{
try
{
valid = Conn->ValidID(ID);
}

catch (const Exception & e)
{
ErrorMsg=e.Message;
}
}

 

void __fastcall TMainForm::ValidateID(void)
{
ErrorMsg="";
Conn = new TServerMethods1Client(DSRestConnection1);
TThread * RThread = TThread::CreateAnonymousThread([]()
{
MainForm->ThreadFunction();
}
);

RThread->Start();

while (!RThread->Finished) Application->ProcessMessages();

 

Hi Andreas,

Do you use Delphi or C++Builder? Which version? Which Android version do you use?

Paweł