ChevyRay

const INDEX: u8 = 0x0;
const RUN_8: u8 = 0x40;
const RUN_16: u8 = 0x60;
const DIFF_8: u8 = 0x80;
const DIFF_16: u8 = 0xc0;
const DIFF_24: u8 = 0xe0;
const COLOR: u8 = 0xf0;

const MASK_2: u8 = 0xc0;
const MASK_3: u8 = 0xe0;

jdimpson

(originally written in 2009 and posted to livejournal! https://jdimpson.livejournal.com/6812.html

The last article teaches how to use socat by comparing it first to cat then to netcat. It skimped on socat's UDP-related features, because netcat only implements a subset of them. This article picks up where the last one left off, with respect to UDP. After this article will be one more that discusses advanced socat features.

It turns out there are a lot of subleties when dealing with UDP, even before multicast is mixed in. We'll abandon the comparisons to netcat, as we've exceeded what netcat can do. But first a quick reminder of one way socat does UDP. 

socat as a UDP server on port 11111.

socat STDIO UDP-LISTEN:11111

ibraheem4

Installing Postgres via Brew

Pre-Reqs

Brew Package Manager

In your command-line run the following commands:

1. brew doctor
2. brew update

gaearon

// connect() is a function that injects Redux-related props into your component.
// You can inject data and callbacks that change that data by dispatching actions.
function connect(mapStateToProps, mapDispatchToProps) {
  // It lets us inject component as the last step so people can use it as a decorator.
  // Generally you don't need to worry about it.
  return function (WrappedComponent) {
    // It returns a component
    return class extends React.Component {
      render() {
        return (

vasanthk

System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

Basic Steps

1. Clarify and agree on the scope of the system

• User cases (description of sequences of events that, taken together, lead to a system doing something useful)
  • Who is going to use it?
  • How are they going to use it?

tuxfight3r

##TCP FLAGS##

Unskilled Attackers Pester Real Security Folks
==============================================
                     TCPDUMP FLAGS
Unskilled =  URG  =  (Not Displayed in Flag Field, Displayed elsewhere) 
Attackers =  ACK  =  (Not Displayed in Flag Field, Displayed elsewhere)
Pester    =  PSH  =  [P] (Push Data)
Real      =  RST  =  [R] (Reset Connection)
Security  =  SYN  =  [S] (Start Connection)