We have a similar setup, and also changed to using a persistent connection, for both eliminating timeouts and performance issues.
Below were the HTTP directives that were needed for persistent connection.
KeepAliveTimeout 86400
MaxKeepAliveRequests 0
Paul
-----Original Message-----
From: RPG400-L [mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of Greg Wilburn
Sent: Thursday, September 20, 2018 9:07 AM
To: RPG programming on the IBM i (AS/400 and iSeries)
Subject: RE: http-api how to properly hit a api end point multiple times. ((from midrange-l)
I have at least 3 different interfaces to applications that require a single request per item... good luck getting an established commercial web application to change their APIs. They were likely not designed for a "batch" style update.
Mine work using the http_persist_ group of procedures... it's just relatively slow.
-----Original Message-----
From: RPG400-L [mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of Charles Wilt
Sent: Wednesday, September 19, 2018 6:38 PM
To: RPG programming on the AS400 / iSeries <rpg400-l@xxxxxxxxxxxx>
Subject: Re: http-api how to properly hit a api end point multiple times. ((from midrange-l)
As Brad mentions, using a persistent connection would be the most efficient as you're not opening/closing the HTTP connection for each request.
But you're still going to have to call http_persist_post() 1000 times in a loop.
http_persist_open();
for x = 1 to 1000;
http_persist_post();
endfor;
http_persist_close();
A truly "better" way would require that the server you're posting to support a better way...ie some way to send a request for all 1000 articles at one time.
The only other improvement you can make from your side alone would be to multi-thread the requests. That should allow your process to complete much faster. Assuming you don't overload the server on the other side.
Charles
On Wed, Sep 19, 2018 at 9:06 AM Gerald Magnuson <gmagqcy.midrange@xxxxxxxxx>
wrote:
I am trying to optimize this
I have a http api that I need to hit repetitively :
// If Procs is 0, then set debug, set auth
if Procs = 0 ;
http_debug(*ON:'/tmp/gem_GLOC2_debug.txt');
http_setauth(HTTP_AUTH_BASIC: userid: pass) ;
http_xproc( HTTP_POINT_ADDL_HEADER
: %paddr(add_headers) ); endif ; if Procs = -1;
*inLR = *on ;
return ;
endif ;
msgdata = '{"articles":[{"typeid":1,"articleSecondaryId":+
'+ap2+%trim(itemnbr)+ap2+'}]} ' ;
msgdataL = %len(%trim(msgdata));
rc=http_url_post_raw(
'https://mchporl.xxx.com/LTSystem/+
api/v2/article/search'
:%addr(msgdata)
: msgdataL
:1
: %paddr('INCOMING')
:HTTP_TIMEOUT
:HTTP_USERAGENT
: 'application/json' );
return retdata ;
I would presume that there is a better way for me to iterate a list of
item numbers than loading my msgdata field and then calling the
http_url_post_raw 1000 times...
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