Grosan Flaviu Gheorghe (Page 3)

Grosan Flaviu Gheorghe

More posts

Node.JS Low Latency Rapsberry PI Camera Streaming via HTTP and VLC

Here is a short code snippet for relatively low latency video streaming using a Raspberry PI camera via the HTTP protocol, and viewing it in VLC. This post is inspired by a ‘netcat‘ approach found here. Code for creating an HTTP Video Server: var spawn = require('child_process'

Installing Capistrano 3 on a Linux machine, using RVM

Previously, an entry was written on how to Install Capistrano 3, on Debian. Here is an alternate, quicker way, of installing Capistrano using RVM, on any flavour of Linux – authored by Omar Tamer. This tutorial requires curl, and root level privileges. First stage is to install the ruby version manager,

Part 1: Real-Time Browser to Browser Communication Using Node.Js and Socket.Io

Usually browsers communicate with the server, sending a request and getting a response. But what if it would be possible to link two or more browsers, while using the server to route requests between the two? With the advance of server side JavaScript, using node.js, and socket connections supported

Free Open Source Alternative to PaperTrail App

Webtail is an Open Source tool I wrote, for tailing files on multiple servers and displaying content in a browser in real time. Using an agent on each server, it can be used for tailing logs and pushing new lines to a server and distributing content to browsers. Source code

How to install RabbitMQ Server and Client on Debian

This is a quick step by step guide on how to install RabbitMQ and the PHP-amqplib client on a Debian server. 1. Install server: sudo apt-get install rabbitmq-server 2. Check the server status: sudo rabbitmqctl status 3. Restart the server: sudo service rabbitmq-server start 4. Install PHP5 client (amqp): * Follow

Write your own Pinterest like Image Gallery using jQuery Wookmark and Symfony2

This article provides a quick tutorial on how to write your own Pinterest like Image Gallery using the jQuery Wookmark Plugin and Symfony2. Assuming you already created a Symfony2 Bundle and image files are stored on disk, below are the steps to follow for writing a new Controller and Twig

Identifying bottlenecks in your PHP scripts, using XDebug and KCacheGrind

This entry focuses on how to identify slow parts of your scripts using the PHP/Xdebug profiling feature along with KCacheGrind for profile data visualisation. Xdebug is a PHP extension used for debugging scripts, supporting stack and function traces and information and memory allocation profilling. KCacheGrind is a profile data

FreeBSD Git Server Granular User Permissions using File System Access Control Lists (ACLs)

Previously I wrote about how to create a multi user git server on FreeBSD using standard UNIX file permissions, allowing users that belong to the same group to read and write from and to the same repository. But what happens when some users outside the group, should only read, while

Symfony2: Folder Structure

This entry describes the Symfony2 directory structure; providing a broad understanding of how a project is structured, and laying the ground for file system level security and customization. Below are diagrams for each main folder, along with a description of its components (based on: http://symfony.com/doc/current/quick_

Part 3: Real-Time Browser to Browser Communication, ExtJS Based Chat Application Using Node.Js and Socket.Io

In the previous entries, found here and here, I wrote about how to enable browser to server communication, using Node.Js and Socket.Io and how to emit events and return responses. In this entry I will describe how to route those events among different connected browsers, and how to