Re: [Ftpapi] request data truncating when calling http

Have you tried searching the archives

http://www.scottklement.com/archives/ftpapi/

From: ftpapi-bounces@xxxxxxxxxxxxxxxxxxxxxx [mailto:ftpapi-bounces@xxxxxxxxxxxxxxxxxxxxxx] On Behalf Of Daniel Stephens
Sent: Thursday, April 13, 2017 1:23 PM
To: ftpapi@xxxxxxxxxxxxxxxxxxxxxx
Subject: [Ftpapi] request data truncating when calling http_post

I have a very strange situation that I have finally narrowed down after much debugging. I don’t understand what’s happening and am hoping someone can shed some light.

Basically I am creating some JSON (using Scott’s YAJL utility) that I then pass to HTTP_post. I use the YAJL_copyBuf to get the JSON into a variable we’ll call MYJSON. It’s defined in RPG as Varchar(32767:2). The actual data length is around 2020 characters but can be as much as 9000 in testing so far.

I then pass the variable containing the JSON to HTTP_Post like this:

rc = http_post( 'myURL’'

: %addr( myJSON : *data )

: %len( myJSON )

: '/ifs/path/to/result.json'

: HTTP_TIMEOUT

: HTTP_USERAGENT

: 'application/json' );

I’m getting a response back that indicates the JSON is invalid. When I look at the debug log (senddoc() entered ) it appears that the variable containing the JSON is losing the first 2 bytes (which are {“ - a left brace and double quote).

If I run the program with the Rdi debugger and hover over the myJSON variable it does indeed appear to be missing the first 2 bytes. If instead I create a monitor as “myJSON: c 2030” It appears to include the variable in its entirety. However, when I step into the http_post procedure and set a monitor on pePostData as “psPostData: c 2030”, the first 2 bytes are indeed missing.

I coded it this way based on an example Scott gave in answering another question. I ultimately was able to resolve this by simply removing the ‘*data’ from the second parameter. The problem is I don’t understand why that fixed it. Based on the Programmer’s Reference *DATA is supposed to point to the address of the actual data.

CFI

Dan Stephens

Systems Engineer Analyst Principal

4701 E. 32nd St.

Joplin, MO 64804 USA

P: 417-623-5229 ext. 5462

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Re: [Ftpapi] request data truncating when calling http_post