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
Dion Hinchcliffe is an internationally recognized digital expert, bestselling book author, frequent keynote speaker, analyst, futurist, and transformation expert based in Washington, DC. He is currently Chief Strategy Officer at the industry-leading digital strategy and online community solutions firm, 7Summits.
Digital Transformation is much more than a buzzword. The radical shift to digital mechanisms for almost every process is evident across all industries and verticals. This is often especially true in financial services, where the legacy environment is many times unable to keep up with the rapidly shifting demands of the consumer. The constant pressure to provide complete, omnichannel delivery of customer-facing solutions to meet both regulatory and customer demands is putting enormous pressure on...
IoT is rapidly becoming mainstream as more and more investments are made into the platforms and technology. As this movement continues to expand and gain momentum it creates a massive wall of noise that can be difficult to sift through. Unfortunately, this inevitably makes IoT less approachable for people to get started with and can hamper efforts to integrate this key technology into your own portfolio. There are so many connected products already in place today with many hundreds more on the h...
The standardization of container runtimes and images has sparked the creation of an almost overwhelming number of new open source projects that build on and otherwise work with these specifications. Of course, there's Kubernetes, which orchestrates and manages collections of containers. It was one of the first and best-known examples of projects that make containers truly useful for production use. However, more recently, the container ecosystem has truly exploded. A service mesh like Istio addr...
Digital Transformation: Preparing Cloud & IoT Security for the Age of Artificial Intelligence. As automation and artificial intelligence (AI) power solution development and delivery, many businesses need to build backend cloud capabilities. Well-poised organizations, marketing smart devices with AI and BlockChain capabilities prepare to refine compliance and regulatory capabilities in 2018. Volumes of health, financial, technical and privacy data, along with tightening compliance requirements by...
Charles Araujo is an industry analyst, internationally recognized authority on the Digital Enterprise and author of The Quantum Age of IT: Why Everything You Know About IT is About to Change. As Principal Analyst with Intellyx, he writes, speaks and advises organizations on how to navigate through this time of disruption. He is also the founder of The Institute for Digital Transformation and a sought after keynote speaker. He has been a regular contributor to both InformationWeek and CIO Insight...
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...
To Really Work for Enterprises, MultiCloud Adoption Requires Far Better and Inclusive Cloud Monitoring and Cost Management … But How? Overwhelmingly, even as enterprises have adopted cloud computing and are expanding to multi-cloud computing, IT leaders remain concerned about how to monitor, manage and control costs across hybrid and multi-cloud deployments. It’s clear that traditional IT monitoring and management approaches, designed after all for on-premises data centers, are falling short in ...
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...
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...