Recently, some folks asked on our forum for some advice on how to properly create a Lightstreamer client based on the Python language. An official release of a Lightstreamer Python client is not available yet, so it seems a good moment to show an example of a simple client application written in this wonderful language.The…
We over here at Lightstreamer would like to extend our warmest wishes to all our clients, partners, supporters, and friends for an amazing holiday season and a prosperous new year. 2015 will begin with big news from our team. Lightstreamer 6 will be released in the course of January, with tons of new features and…
This short article will guide you through authentication and authorization in Lightstreamer and will introduce a live example with full source code. Authentication Most, if not all, Lightstreamer applications will, at some point, require some sort of authentication mechanism to validate their users. Moreover, there usually is an authentication mechanism already in place when Lightstreamer is introduced in…
Google’s researchers recently discovered a new vulnerability affecting the SSL protocol. POODLE, which stands for Padding Oracle On Downgraded Legacy Encryption, allows an attacker (a man-in-the-middle) to decrypt ciphertext using a padding oracle side-channel attack. Full details are available in this Google paper. POODLE affects older standards of encryption, specifically Secure Socket Layer (SSL) version 3.0. It does…
A maintenance release of Lightstreamer is now publicly available for download. It contains several fixes and improvements. For paid editions, no license updates are necessary to upgrade, provided that a license for server 5.1 and JS client 6.1 is already in use and the maintenance contract is active. Please contact support@lightstreamer.com if you have any questions. Below is…
Unless you have been living under a rock in the last month or so, you should know Apple introduced a new programming language during WWDC 2014. Like a typical Steve Jobs’ “One more thing” move, Craig Federighi introduced Swift at the very end of the keynote. The intention of the new language is to leave behind some…
Hierarchical exception handling and static exception checking are among the most significant features offered by the Java language; however, their support is limited to procedural code and can only be exploited in hierarchies of function calls. So, there is nothing similar to assist us when it comes to event-driven programming or asynchronous programming, where the…
A new release of the stable version of Lightstreamer is now available, containing updates to: JavaScript client library iOS client library OS X client library JavaScript Client Library The new version is 6.1.1. It fixes an issue with Chrome browser version 33 and newer, where a harmless request for a page named “null” was performed to the…
We are very pleased to announce the early public availability of the next release of Lightstreamer Colosseo: version 6.0. Lightstreamer now includes support for Mobile Push Notifications (MPN). Clients have new APIs to activate special subscriptions whose updates are delivered through push notifications. New MPN subscriptions are persistent, compatible with existing data adapters, and require only one call to be activated. Now, just…
We are very excited to report that Lightstreamer exhibited at the prestigious HTML5 Developers Conference held on October 22-23, 2013 at the Moscone Center in San Francisco, CA. HTML5DevConf is one of the largest, best attended software developer conferences in the world. The event also included three days of training sessions, all of which sold out weeks…
I had some spare time, so I decided to put together some code to make a PoC integration between our Lightstreamer JavaScript client library and Google’s AngularJS. The integration went smoothly: simply prepare the view using AngularJS syntax, then populate the associated model object with the data flowing in from the Lightstreamer subscription. At each update,…
A few weeks ago, we released part of our Lightstreamer JavaScript Client library as an open source project on GitHub (actually, four projects). The initial idea was to release our visual layer as an open source addon to our client library. It was 2011 and at that time the latest release of our client library…