Reading large txt from WinHttp.ResponseText Property

jelittlejohn

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

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

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

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

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

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

alwaysguna

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

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

alwaysguna

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/