anhldbk

1. Overview

This is an example of using module tls in NodeJS to create a client securely connecting to a TLS server.

It is a modified version from documentation about TLS, in which:

• The server is a simple echo one. Clients connect to it, get the same thing back if they send anything to the server.
• The server is a TLS-based server.
• Clients somehow get the server's public key and use it to work securely with the server

2. Preparation

anhldbk

'use strict'

const os = require('os')
const crypto = require( "crypto" )
const _ = require('lodash')

// Get MAC addresses of public interfaces
// @return: List of addresses
function getPublicInterfaces(){
        // get network interfaces

anhldbk

OnVIF Specs

WSDL schemes and docs:

• Operations index
• http://www.onvif.org/onvif/ver10/tc/onvif_core_ver10.pdf
• http://www.onvif.org/ver10/device/wsdl/devicemgmt.wsdl
• http://www.onvif.org/ver10/media/wsdl/media.wsdl
• http://www.onvif.org/ver20/ptz/wsdl/ptz.wsdl
• http://www.onvif.org/Portals/0/documents/WhitePapers/ONVIF_WG-APG-Application_Programmer's_Guide.pdf

Video Streaming Server

anhldbk

Motivation

My Dell N4010's wifi driver seems not to work well on Ubuntu.

1. Run command

sudo vim /etc/apt/sources.list

2. Add following lines:

anhldbk

'use strict';

class Binder {}

Binder.getAllMethods = function(instance, cls) {
  return Object.getOwnPropertyNames(Object.getPrototypeOf(instance))
    .filter(name => {
      let method = instance[name];
      return !(!(method instanceof Function) || method === cls);
    });

anhldbk

• 4 Types of Memory Leaks in JavaScript and How to Get Rid Of Them
• Debugging Memory Leaks in Node.js Applications
• A surprising JavaScript memory leak found at Meteor
• Memory leak patterns in JavaScript

anhldbk

var mqtt    = require('mqtt');
var lodash = require('lodash');
var client  = mqtt.connect({ host: 'localhost', port: 1883 });

client.on('connect', function () {
  console.log('Connected')
  client.subscribe('presence');
});

anhldbk

Notes for startup

anhldbk

Token Based APIs

Overview

1. Token Loves Cookie

Reference: Token Based Authentication for Single Page Apps

I see a lot of discussions where cookies are pitted against access tokens. While we’ve all been burned by systems that store a session ID in a cookie, and that cookie is not secured and thus gets stolen. That sucks, but its not a reason to use tokens. Its a reason to avoid non-secure, non-https cookies.

anhldbk

sudo yum install -f libtool

cd autoconf-2.68
chmod +x configure
./configure 
chmod +x build-aux/git-version-gen
sudo make
sudo make install
cd ..