Welcome!

Adobe Flex Authors: Matthew Lobas, PR.com Newswire, Shelly Palmer, Kevin Benedict

Related Topics: Adobe Flex, Java IoT

Adobe Flex: Blog Feed Post

Sherlock Holmes and Adobe's Error #2032

Distributed applications involve several players and you need to slowly walk the walk analyzing each of them

During yesterday’s Flex training the students had to install an Adobe's sample application "Tour De Flex". Everyone did. Everyone but one student was able to run this application. He was getting a weird error “An Internet connection is required” even though he was online. No proxies.  This student went through the badge install of this AIR application from his Firefox browser. After a quick interrogation, the student has revealed that he ignored several error messages #2032, which is the infamous streaming error that has no generic cure. Basically, that application was installed, but with a little brain tumor.

Google returned nothing but friendly posts suggesting to connect to the Internet.   Actually, there was one post that Tour De Flex periodically performs server pings to check that the Internet connection is in place. In cases like this you may get a feeling of loosing control.

"I look at them, and the only thought which comes to me is a feeling of their isolation and of the impunity with which crime may be committed there."

Since this accident has happened during the training class, I decided to use this opportunity to illustrate the approach for debugging something like this. Distributed applications involve several players and you need to slowly walk the walk analyzing each of them.


"It seemed to me that a careful examination of the room and the lawn might possibly reveal some traces of this mysterious individual. You know my methods, Watson."

First of all, we couldn’t blame the application itself because everyone else in the class could run it.
Second, we couldn't the Windows 7 where this error happened cause several other people had the same OS.

"Results without causes are much more impressive."

But there should be someone to blame, right? Let’s think aloud. Tour De Flex  tries to ping some remote machine. What does it get back?  “An Internet connection is required”. Can it be that some bad guy intercepts this message and returns this erroneous message? I asked if there is any anti-virus or a security software installed on this machine? Nope. Well, it’s gotta be someone….

"I had little doubt that I had come to the end of my career when I perceived the somewhat sinister figure of the late Professor Moriarty standing upon the narrow pathway which led to safety."

Most likely this AIR application makes a call to the remote server either using a simple HTTP or AMF protocol (it’s not likely that RTMP protocol is being used here).  So our next goal is to see what URL is being used for this mysterious ping, how it’s being routed and what’s coming back, if anything at all.

The next step is to localize the broken link in this distributed application. We need a sniffer program to monitor the network traffic initiated from this PC. This shouldn’t be a regular HTTP sniffer that besides HTTP can see AMF calls too.

I like Charles Proxy monitoring tool that does it nicely. We were about to go this route, but then my colleague decided to reinstall the AIR application using the Internet Explorer. This time there were no traces of error 2032, and Tour De Flex started to work fine.

There something in the browser. The next stop is the menu Tools, Add-ons… The Greasemonkey add-on was the main suspect, and its removal fixed the error #2032.

There’s nothing in the AIR. It’s elementary, Watson!

Read the original blog entry...

More Stories By Yakov Fain

Yakov Fain is a Java Champion and a co-founder of the IT consultancy Farata Systems and the product company SuranceBay. He wrote a thousand blogs (http://yakovfain.com) and several books about software development. Yakov authored and co-authored such books as "Angular 2 Development with TypeScript", "Java 24-Hour Trainer", and "Enterprise Web Development". His Twitter tag is @yfain

IoT & Smart Cities Stories
Nicolas Fierro is CEO of MIMIR Blockchain Solutions. He is a programmer, technologist, and operations dev who has worked with Ethereum and blockchain since 2014. His knowledge in blockchain dates to when he performed dev ops services to the Ethereum Foundation as one the privileged few developers to work with the original core team in Switzerland.
René Bostic is the Technical VP of the IBM Cloud Unit in North America. Enjoying her career with IBM during the modern millennial technological era, she is an expert in cloud computing, DevOps and emerging cloud technologies such as Blockchain. Her strengths and core competencies include a proven record of accomplishments in consensus building at all levels to assess, plan, and implement enterprise and cloud computing solutions. René is a member of the Society of Women Engineers (SWE) and a m...
Andrew Keys is Co-Founder of ConsenSys Enterprise. He comes to ConsenSys Enterprise with capital markets, technology and entrepreneurial experience. Previously, he worked for UBS investment bank in equities analysis. Later, he was responsible for the creation and distribution of life settlement products to hedge funds and investment banks. After, he co-founded a revenue cycle management company where he learned about Bitcoin and eventually Ethereal. Andrew's role at ConsenSys Enterprise is a mul...
Whenever a new technology hits the high points of hype, everyone starts talking about it like it will solve all their business problems. Blockchain is one of those technologies. According to Gartner's latest report on the hype cycle of emerging technologies, blockchain has just passed the peak of their hype cycle curve. If you read the news articles about it, one would think it has taken over the technology world. No disruptive technology is without its challenges and potential impediments t...
If a machine can invent, does this mean the end of the patent system as we know it? The patent system, both in the US and Europe, allows companies to protect their inventions and helps foster innovation. However, Artificial Intelligence (AI) could be set to disrupt the patent system as we know it. This talk will examine how AI may change the patent landscape in the years to come. Furthermore, ways in which companies can best protect their AI related inventions will be examined from both a US and...
In his general session at 19th Cloud Expo, Manish Dixit, VP of Product and Engineering at Dice, discussed how Dice leverages data insights and tools to help both tech professionals and recruiters better understand how skills relate to each other and which skills are in high demand using interactive visualizations and salary indicator tools to maximize earning potential. Manish Dixit is VP of Product and Engineering at Dice. As the leader of the Product, Engineering and Data Sciences team at D...
Bill Schmarzo, Tech Chair of "Big Data | Analytics" of upcoming CloudEXPO | DXWorldEXPO New York (November 12-13, 2018, New York City) today announced the outline and schedule of the track. "The track has been designed in experience/degree order," said Schmarzo. "So, that folks who attend the entire track can leave the conference with some of the skills necessary to get their work done when they get back to their offices. It actually ties back to some work that I'm doing at the University of San...
When talking IoT we often focus on the devices, the sensors, the hardware itself. The new smart appliances, the new smart or self-driving cars (which are amalgamations of many ‘things'). When we are looking at the world of IoT, we should take a step back, look at the big picture. What value are these devices providing. IoT is not about the devices, its about the data consumed and generated. The devices are tools, mechanisms, conduits. This paper discusses the considerations when dealing with the...
Bill Schmarzo, author of "Big Data: Understanding How Data Powers Big Business" and "Big Data MBA: Driving Business Strategies with Data Science," is responsible for setting the strategy and defining the Big Data service offerings and capabilities for EMC Global Services Big Data Practice. As the CTO for the Big Data Practice, he is responsible for working with organizations to help them identify where and how to start their big data journeys. He's written several white papers, is an avid blogge...
Dynatrace is an application performance management software company with products for the information technology departments and digital business owners of medium and large businesses. Building the Future of Monitoring with Artificial Intelligence. Today we can collect lots and lots of performance data. We build beautiful dashboards and even have fancy query languages to access and transform the data. Still performance data is a secret language only a couple of people understand. The more busine...