Pin Shih Wang wpsteak

Virtual Hosts on nginx (CSC309)

When hosting our web applications, we often have one public IP address (i.e., an IP address visible to the outside world) using which we want to host multiple web apps. For example, one may wants to host three different web apps respectively for example1.com, example2.com, and example1.com/images on the same machine using a single IP address.

How can we do that? Well, the good news is Internet browsers

Getting u-blox MAX-7C GPS to work with Assisted A-GPS

So you got your u-blox GPS and wired it up only to look at it struggling to get a valid fix? Under less than ideal conditions, it can take a better part of half an hour. That's because unlike your smartphone GPS, it doesn't have the luxury of having downloaded all the auxiliary navigation data (almanacs and the lot) out-of-band, via fast mobile connection. Instead it relies on the satellite's signal itself, which is being transmitted to you at meager 50 bits per second (I'm not missing "kilo" there, it's three orders of magnitude slower than your 2G GPRS connection).

Luckily, the u-blox receivers are fitted with what the company calls "AssistNow" capability and it does exactly the same thing your iPhone does - feeds the GPS with pre-downloaded almanacs, speeding up the acquisition process to mere seconds.

In principle, the process looks easy enough - we just need to download the data, and then push them to the receiver. Sadly, the AssistNow documentat

	const buffer = require('buffer');
	const crypto = require('crypto');

	const aes256gcm = (key, iv) => {
	const ALGO = 'aes-256-gcm';

	const encrypt = (str) => {

	const cipher = crypto.createCipheriv(ALGO, key, iv);
	let enc = cipher.update(str, 'utf8', 'hex');

	<!DOCTYPE html>
	<html>
	<head>
	<style>
	#map_canvas
	{
	width: 400px;
	height: 400px;
	}
	</style>

	#import <Foundation/Foundation.h>

	@interface PWNode : NSObject <NSCopying>

	typedef void (^PWNodeEnumerateBlock)(NSString *value);

	@property (nonatomic, copy) NSString *value;
	@property (nonatomic, strong) PWNode *leftNode;
	@property (nonatomic, strong) PWNode *rightNode;

	ESP Tool
	https://github.com/themadinventor/esptool

	ESP-12 update to SDK v0.9.5 and AT v0.21.0.0 - noobs tutorial
	http://blog.3mdeb.com/2015/01/25/esp-12-upgrade-to-esp-iot-sdk-v0-dot-9-5-using-esp-open-sdk-toolchain/

	# source : http://code.google.com/p/natvpn/source/browse/trunk/stun_server_list
	# A list of available STUN server.

	stun.l.google.com:19302
	stun1.l.google.com:19302
	stun2.l.google.com:19302
	stun3.l.google.com:19302
	stun4.l.google.com:19302
	stun01.sipphone.com
	stun.ekiga.net

	sudo apt-get install bluez python-gobject
	sudo apt-get install bluetooth bluez-utils blueman
	sudo apt-get install —reinstall aptdaemon

	sudo vim /usr/bin/bluez-simple-agent
	(replace ‘KeyboardDisplay’ with ‘DisplayYesNo’)

	sudo vim /etc/bluetooth/input.conf
	(time out => 0)

	// Use Gists to store code you would like to remember later on
	console.log(window); // log the "window" object to the console

	#!/bin/sh

	PLIST_BUDDY=/usr/libexec/PlistBuddy

	function add_compatibility() {
	"$PLIST_BUDDY" -c "Add DVTPlugInCompatibilityUUIDs:10 string $2" \
	"$1/Contents/Info.plist"
	}

	function has_compatibility() {