OLE IDispatch exception code 0 from MSXML3.dll 1

[vfp4ever]

Hello,

until recently I was able to download images from a web site using code like this:

loHttpRequest = CreateObject( "MSXML2.ServerXMLHTTP" )
loHttpRequest.Open( "GET", lcImageAddress, .F. )
loHttpRequest.Send( )
STRTOFILE( loHttpRequest.ResponseBody, lcImageFileName )

Suddenly, while working within the same session, an "OLE IDispatch exception code 0: the connection with the server was terminated abnormally" appeared, and since then I have not been able to make it work again.
The error may change to "... code 0: Access is denied" or "... code 0: Unspecified error" if I try to use a different syntax in CreateObject.

I am using VFP9 SP2 and Firefox on Windows 7 Professional, and step into the same error with a different web browser (specifically as VFP calls the Send method). The images are easily displayed on the browser at their URL address.
At first I thought the msxml3.dll file got corrupted, but using msxml6.dll does not solve the problem.

I suspect it has to do with security certificates, though I have no clue how to proceed.

Dario

 

[Olaf Doschke]

If i.colnect.net is not willing to respond to requests with certain signatures, that might include IE signatures, may not be the knowledge and decision of that webmaster. But that's a limitation that's quite ridiculous.

If you'd want to solve all requests with the same MSXML based code, that better works where you have the basis for current TLS libraries and certificates. From that perspective you can never know whether your code can be used for anyone on any system in any state. For that to work, you'd have to implement a lot of things, unthinkable.

I think the problem you have is very specific to your own computer only. Edit: When I use agent strings of Curl I also get the error in Win10. So yes, the server i.colnect.net seems very selective about requests. The intention sems to be preventing what you do, crawling the pictures of the site.

Bye, Olaf.

Olaf Doschke Software Engineering

https://www.doschke.name

 

[wspanialy]

vfp4ever
you can access your resource from vfp on win7 using "WinHttp.WinHttpRequest.5.1" or "MSXML2.XMLHTTP.6.0"
read following article on how to do it
Update to enable TLS 1.1 and TLS 1.2 as default secure protocols in WinHTTP in Windows