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HTTP Request Problem

Dear Experts,

I am having problems with an HTTP request within my VB6 application.  It works perfectly when running the code in the VB6 development environment but not from the compiled EXE file.

When running the EXE, I am getting error -2146697211 at the objHTTP.send strEnvelope command.

The identical call works from within another similar app without problems, making me wonder if some kind of reset command is required.

The code is below.

Thanks for your help!

///////////////////////////////////////////////

Dim objHTTP As New MSXML2.XMLHTTP
Dim strEnvelope As String
Dim strReturn As String
Dim objReturn As New MSXML2.DOMDocument
Dim nodeReturned As IXMLDOMNode
Dim xStatus As String

'load xml file to be posted to the server
strEnvelope = https://www.xyz.com/jsp/validateKey.jsp?...

objHTTP.Open "get", strEnvelope, False

'Make the SOAP call
objHTTP.send strEnvelope

'Load the return envelope into a DOM
objReturn.Load objHTTP.responseBody

'Query the return envelope
Set nodeReturned = objReturn.selectSingleNode("//status")

xStatus = nodeReturned.Text
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ttobin333
Asked:
ttobin333
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1 Solution
 
mrwad99Commented:
The error number -2146697211 means that the server or proxy server you are trying to connect to cannot be found.  Is it possible that your hosts file is incorrect somehow?
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ttobin333Author Commented:
As stated, the call works perfectly when running from within Visual Basic so the connection information is correct.
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mrwad99Commented:
Yes, I read that :)

Running the app from within the IDE is not the same as running the bare exe, because it is possible that the IDE may be elevating the exe, hence it has permission to read the hosts file.
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ttobin333Author Commented:
After a reboot, it started working again but I need this to be as reliable as possible. What can I do to make it more robust?
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mrwad99Commented:
What was the result of running the app as administrator?  Also, have you tried running it on a completely clean machine (say, a virtual one)?
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CvDCommented:
From what I read it looks like your memory is "dirty". Meaning, the reference as addressed by objHTTP still lingers, because you do not close it properly. The connection is gone, but the pointer exists. Rebooting gives you a clean memory sleet, therefor it works again.

Destroy the object by nullifying it (i.e. objHTTP = null (or Nothing i don't know what you need in this case))
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ttobin333Author Commented:
Thank you for the responses.

CvD, this sounds like a good idea. Will try it as soon as I can make the error occur again.

Mrwad99, running as administrator did not solve the problem.

Thanks.
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CvDCommented:
You should alway cleanup unless you are absolutely certain the programming language will do a proper job cleaning up. In case of any doubt as to this matter, cleanup before you proceed. I.e. nullify objHTTP and objReturn wheather you get the error or not.
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ttobin333Author Commented:
Thanks!
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