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Michael Benford · Guest

Hi everyone.

Lately I've been finding some annoying bugs in SOAP implementation:

1) When using SOAP attachments, THTTPRIO's OnBeforeExecute event becomes
useless.

I've created a new component inherited from THTTPRIO, in order to get a TStream
from OnBeforeExecute event instead of a WideString. It works pretty fine
and I can compress/encrypt my datapackets. However, when using soap attachments
Delphi raises an exception because attachment's stream cannot be changed.
Digging in SOAP source code, I found in SOAPAttach.pas TAggregatedStream
class, used by soap attachment. It overrides Write method from TStream and
simply produces an error. Since there's an OnSendAttachment event in THTTPRIO,
I can't fully understand why OnBeforeExecute should be called for attachments
too. Because of that all, I can't compress my entire datapacket at a time
if some remote method makes use of TSOAPAttachment class.

2) THTTPSoapPascalInvoker's OnGetAttachment doesn't work.

Both OnGetAttachment and OnSendAttachment don't work. I looked at SOAPPasInv.pas
and figured out they exist but are not used at all. So, for instance if I
compress an attachment on the client, I'm not able to decompress it on the
server.

3) MethodName parameter in THTTPSoapPascalInvoker's OnBeforeDispatchEvent
is always empty

Both OnBeforeDispatchEvent and OnBeforeDispatchEvent2 pass MethodName argument
as an empty string, so it's not possible to determine which method is being
called from the client.

4) THTTPReqResp's OnReceivingData event still passes irrelevant information.

This bug comes from Delphi 7, I guess. OnReceivingData event passes always
both Read and Total parameters with the same values . Because of that it's
impossible to use them for something useful.

Those bugs also appear on Delphi 2007 (Build 2516). There are workarounds
for all of them? Or I'll have to wait for future hotfixes/updates?

Thanks in advance.

Michael Benford

Jean-Marie Babet · Guest

Hello Michael,

First off, thanks for the detailed post. I've mentioned it before here,
sadly little went on in the native SOAP area after D7. I won't go in the
fud-driven "drop native, it's all .NET now" panic. Rather I'll focus on the
fact that we're now working on that area again. For D2007 the focus was so
much on making sure we work with the *big* WebServices that several areas
(SOAPDataModule, Attachment, etc) did not get the focus they need.

Jean-Marie Babet · Guest

A quick note to mention that it's hectic here currently (another deadline).
It seems that tonight will be another long one (last night I shut down after
midnight; I'm hoping for an earlier exit today).

I'll will post a follow up as soon as I've had some time to investigate
this.

Cheers,

Bruneau.