How to catch errors when opening http-location with Obj.Open?

[Autoseek]

Hi,

ok, >digging this out. I got this to work for me. Would someone be able to point me into the right direction for understanding the error handling of $oxmlhttp.Open ("GET", $url2, False)? It is my understanding that this is the major part of the retrieval, and if the retrieval does not work, I would like to understand why

I have looked here, https://www.autoitscript.com/autoit3/docs/intro/ComRef.htm, under "COM Error Handling", but I am not getting an error when trying to download (for provoking an error) from a non-existing location. Perhaps I am not even doing something meaningful, when trying to catch an error of $oxmlhttp.Open, but I am afraid that I am lacking too many basics here to find out.

If anybody can suggest the error handling here, that would make me very happy

Cheers

Autoseek

[Jfish]

I would first test to make sure you object is creating correctly (that is an old example you are using).

I use :
dim $winHttpReq = ObjCreate("WinHttp.WinHttpRequest.5.1") ; create an instance of the winhttp object

See the help file for how to test if you are creating the object properly (I modified it a bit ... untested):

If Not @error Then
    MsgBox($MB_SYSTEMMODAL, "ObjCreate Test", "ObjCreate() successful !")
 Else
    MsgBox($MB_SYSTEMMODAL, "ObjCreate Test", "Failed to create Object. Error code: " & Hex(@error, 8))
EndIf

Also, if you are just trying to get a file - you should look at the InetGet function.

Edited November 22, 2014 by Jfish

[Autoseek]

Hi,

Thank you for that "pointer on the side" to the InetGet function. I have rewritten everything based on InetGet and the examples provided there. It works smoothly.

Great!

Cheers

Autoseek

[water]

Adding this lines of code at the top of your script will grab all COM errors (if any) and display them in a separate window:

#include <Debug.au3>
_DebugSetup()
_DebugCOMError()

[Autoseek]

Hi,

Thank you. Very interesting. Didn't know it's so easy to install an error handler

Cheers

Autoseek

[water]

Ease of use was what I had in mind when I wrote this function