Reading large txt from WinHttp.ResponseText Property

jelittlejohn · 2009-07-10

Hi,

I am using the WinHttp Automation Server to send credit card processing info to a processor for authorization, etc. I just began testing today and all was looking good from a Navision standpoint. I was able to read the response to a Text variable 0f length 1024. However, my response was basically header info with blank for the data except for an error message as I was sending incorrect login info. Once I got my login info corrected, I tried again but my code blew up as soon as I tried to read the full(complete response info) WinHttp.Responsetext into my text variable saying that I had exceeded the length of the string buffer. I then tried everything else I could thing of :BigText, BLOB, files all with INSTREAM but had no success with anything. I have searched the forum extensively and admit that the results were not encouraging. However, I wanted to ask once more before I began searching for alternative methods whether that involves writing my own automation object or whatever. Can anyone help with this problem?

Thanks in advance,
Jack

ara3n · 2009-07-10

I suggest to use MSXML 6.0 instead of winhttp. more specifically xmlhttpserver

The buffer error is a limitation of NAV interface to automation.

You need to use Stream instead. Do not use Responsetext function but Response.

Is the response an xml file?

jelittlejohn · 2009-07-13

Had no luck using MSXML 6.0 instead of WinHttp as my send statement return an error.

I did continue to try streaming both WinHttp.ResponseString and WinHttp.ResponseBody into a BLOB field with the following code:

CCJnl.Response.CREATEINSTREAM(instr);
int := instr.READ(WinHttp.ResponseStream);

However the response stream threw the following error:

"You are using an invalid data type for this function"

I have some limited experience with INSTREAM and OUTSTREAM but none with WinHttp until this effort. Am I making an obvious stupid mistake?

Thanks,
Jack

jreynolds · 2009-07-14

How about using the ResponseStream method to create an InStream and then read this into a BigText variable:

InStr := WinHTTP.ResponseStream;
BigTxt.READ(Instr);

jelittlejohn · 2009-07-14

Thank You! I was able to read the responsestream into a BigText variable using this method. =D> I had thought I was going to have to try to create a custom automation object for awhile there but was trying desperately to avoid that so I wouldn't have to install it on all client machines. I was able to write the bigtext variable to a file for viewing so now I'm back to figuring out what the codes I received back mean. Thanks again!!

kriki · 2009-08-19

[Topic moved from 'NAV 2009' forum to 'NAV/Navision' forum]

alwaysguna · 2011-11-28

Hi

I am facing a similar situation where I am trying to read the data from WinHttp.GetAllResponseHeaders() and would like to store it as a file. This function doesnt allow the response to be streamed nor could be assigned to bigtext.

Any possible workarounds ?

Sog · 2011-11-28

iterate over the responseheaders and use the winhttp.responsestream to append the bigtext?

alwaysguna · 2011-11-29

Hi Sog
How do I iterate over the responseheaders ? Do you mean using GetResponseheader()

I am facing the below issue when I do that

http://www.autoitscript.com/forum/topic/80855-help-with-winhttpwinhttprequest-object/

Reading large txt from WinHttp.ResponseText Property

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