In this post we’ll take a closer look at how IBM i developers can use the QSHCURL command to easily reach out from CL or RPG and talk to internet-based services and APIs, then consume the resulting data, without a lot of extra effort.
First we’ll provide a short curl intro, and then we’ll look at an example of how to use the PASE-based curl command with an RPG program.
A major differentiator of the IBM i operating system is the use of subsystems to separate workloads, often for managing memory and optimizing performance. While those are still valid reasons for separating work into multiple subsystems, today’s large memory sizes and fast processors reduce the need to optimize performance in this way.
In this article, I’ll explain how subsystems can make today’s web-oriented application workloads much easier to manage. Read more →
You are invited to join Alan Seiden on Tuesday, April 19, 2022, as he presents Dr. Alan’s IBM i Web Checkup to the OMNI User Group. With an option to attend via Zoom or in person at Papa Passero’s in Westmont IL, you can join from virtually anywhere.
Read more →
(Co-authored by Gautier Dumas and Calvin Buckley)
When we use open source languages such as PHP, Python, and Node.js on IBM i to help companies build and access APIs and other resources, we expect these resources to be protected with encryption (for example, the https:// protocol). Further protection is provided by an SSL / TLS certificate that can be authorized, or signed, by a popular certificate authority such as Verisign, Comodo, or Let’s Encrypt, or signed internally by the company itself.
Self-signed certificates are most useful in situations where public trust of a certificate is unnecessary, such as:
UPDATE: CommunityPlus+ PHP is now known as Seiden PHP. A modest but powerful utility “stole the show” during last week’s Lunch & Learn with Alan Seiden and Paul Tuohy. Packaged with CommunityPlus+ PHP, Seiden Group’s siteadd creates an Apache HTTP instance and a FastCGI configuration customized for your needs. In seconds, you’ll be able to launch a sample PHP page to test your new web instance.
When you browse a secure web site or API whose address starts with “https,” what makes the site secure? The site uses a special certificate, provided by a trusted Certificate Authority (CA), to prove that it is legitimate. Until recently, IT shops had to pay for these certificates and generate them manually.
In the last few years, Let’s Encrypt has earned the thanks of technology professionals. Let’s Encrypt, a CA run for the public’s benefit, offers certificates at no charge, along with scripts to generate and regenerate certificates as needed, reducing the effort of keeping certificates up to date, and keeping sites secure.
IBM i integration via APIs has been central to many of our development projects, especially those involving web/mobile applications, software-as-a-service (SaaS) solutions, and cross-platform data sharing.
Lately we’ve been helping customers prepare for new state sales tax rules on internet sales by integrating APIs with their IBM i systems.
Presentation HandoutThe ever-expanding capabilities of Db2 for i can simplify development in open source languages such as PHP, Ruby, Node.js (JavaScript), and Python. These languages, known for their effectiveness in building web and mobile applications, can tap into the power of SQL.
So why complicate them with repetitive code that distracts from their power and simplicity?
Sometimes a fresh perspective makes all the difference.
I recently needed to cancel a WebEx meeting. I clicked the menu item to cancel the meeting and was presented with this dialog box:
The 2015 COMMON annual meeting and expo, now in its first day, is helping speakers and attendees create innovation through IBM i integration: open source, closed source, IBM and vendor solutions. For example, of my six presentations during this conference, two are collaborations:
The Art of Performance Diagnostics, with IBM’s Dawn May, allows us to show, among other topics, how IBM i’s integrated performance tools complement green-screen tools and third-party tools (in this case, Zend Server) to pinpoint and solve performance issues (here, PHP-and DB2-based applications).
PHP Tricks for RPG Developers, a talk jointly created by RPG and SQL expert Birgitta Hauser and me, combines RPG, PHP, and DB2, allowing RPG to achieve graphical (charts and graphs, PDF and Excel files) and internet (json-based web services, flexible email) functionality using native functions.
Conferences such as COMMON serve a need that’s difficult to replicate back at the office—brainstorming and sharing possibilities among interdisciplinary peers, or sitting side-by-side with like-minded colleagues who work for different employers, to try something new. This week, for example, some of us plan to share knowledge on compiling binaries in PASE and to further the potential of open source on IBM i. I’m looking forward to presenting my talks (both joint and solo) and helping to realize new ideas with forward-looking colleagues during the conference.
Birgitta Hauser and Alan Seiden collaborate on their talk at COMMON 2015