Category Archives: WEB

Reverse proxy on nginx on Raspberry pi

< Ready to install >
You need Debian wheezy to follow my procedure. Not only for Raspberry Pi.

< Why I use Raspberry Pi >
Reverse proxy is simple function. Basically it’s too easy task for general personal computers or any servers. Raspberry Pi is not so powerful, but it’s energy saving computer. It’s not expensive. Anyone can buy it all over the world. It’s enough for reverse proxy on nginx. That’s why I choose Raspberry Pi for reverse proxy server and wrote this post.

< Installing nginx >
Execute command below as root.

apt-get install nginx

That’s all.

< Edit config file >
Edit default config file.

nano /etc/nginx/sites-available/default

My “/etc/nginx/sites-available/default” is like below.

server {
listen 80;

location / {

This config transfer accesses “” to 8080 port of local Apache server on Raspberry Pi.

< Add proxy config file >
Add a file for proxy settings.

nano /etc/nginx/conf.d/proxy.conf

My “/etc/nginx/conf.d/proxy.conf” is like blow.

# Header
proxy_redirect off;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-Host $host;
proxy_set_header X-Forwarded-Server $host;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

# Timeout
proxy_connect_timeout 60;
proxy_read_timeout 90;
proxy_send_timeout 60;

# Buffer
proxy_buffering on;
proxy_buffer_size 8k;
proxy_buffers 100 8k;

# Cache
proxy_cache_path /var/cache/nginx/ levels=1:2 keys_zone=cache_$
proxy_temp_path /var/cache/nginx/temp;

proxy_cache_valid 200 2h;
proxy_cache_valid 302 2h;
proxy_cache_valid 301 4h;
proxy_cache_valid any 1m;

Also you need to make cache dir as root.

mkdir /var/cache/nginx

< Start nginx >

service nginx start

How you think about this procedure? So easy?

Generating dynamic web pages only with Google Drive

< Warning >
I recommend you to get extra Google account only for public.
Because if you follow my procedure, your Gmail address will be on public XML file.

< Can I put adsense codes on HTML on Google Drive? >
The answer is NO. I found the important information on Google Product Forums below.
Can I place adsense codes (ads) in my google drive every doucement?
You can not place adsense codes on any documents in Google Drive. Please be careful.

< New solution on 2014/07/07 >
I wrote the post Get new version of Google Spreadsheets as JSONP. If you want to use new version of Google Spreadsheets to generate dynamic web pages instead of the old version, please read that post.

< Updated on 2014/04/26 >
Please use Anyfile Notepad or any other text editor apps for Google Drive on Google Web Store instead of Drive Notepad. Because Drive Notepad was removed from store.

< Updated on 2014/05/12 >
Hey! Drive Notepad is back to Google Web Store!

< Recommendation >
I recommend you to install “Drive Notepad”. It’s an extension for Google Drive. When you install Drive Notepad, you need Chrome. But after connecting Drive Notepad to Google Drive, Chrome is not required. You can use Drive Notepad on any browsers.

< For updating contents from Spreadsheet >
You need to use “Google Spreadsheet version 1”. Because “version 2” doesn’t support CSV and XML sharing yet. ( I wrote this post in April 19 2014. ) If you normally generate new spreadsheet today, it’s automatically be version 2.

Google explained new spreadsheet on “Check out the new Google Sheets“.

I worried about CSV and XML sharing will not support in version 2. So I checked also “Unsupported features in the new Google Sheets“. But this function isn’t listed on that page. Yep … not listed … but nobody is sure when Google change their mind….
Can you agree this situation? LOL

Let’s access to generate a spreadsheet in version 1.

It’s my sample.

It’s only one sheet. It has header, 3 cols and 2 rows.
( I’m going to generate imgur image web site. )

< Let’s make it public >
Follow the pic below.

Select “Publish to the web” and push “Start publishing”.
See “Get a link to the published data” section.
You can get your spreadsheet as Web page, HTML, CSV, TXT, PDF, ATOM, RSS, XLS and ODS.
If you want to sync spreadsheet to your website, you should choose CSV, ATOM or RSS. These are easy format for syncing. When you choose one of them, you can find the function to select column and row. This function can make file size per request smaller.

If you choose CSV, before selecting range, please select a target sheet. Sample is like the pic below.
In my sample, “A1” is header. I want to get 5 rows maximum. So I set the range “A2:A6”.
You can find “range=A2%3AA6” in the url. If you want to add paging function to your web site, you should dynamically change the parameter for “range” by Javascript.

< Is it difficult? >
Don’t worry. I wrote the Javascript code here.
This script is compatible with CSV, ATOM and RSS formats. It’s only URI generator. It doesn’t have parser. If you choose ATOM or RSS, you can use jQuery as a parser.

Please use “generateGoogleDriveUri.min.js” like below.

<!DOCTYPE html>
<title>Sample page</title>
<script src="js/generateGoogleDriveUri.min.js"></script>
<script type="text/javascript">
window.onload = function(){

//Casting object
var gduObj = new genGDU('Put a link to the published data here');

//Generate URI
var atomUri = gduObj.genUri(
  'atom', // I choose ATOM format.
    startRow:2, //Start from row 2
    startCol:1, //Start from col 1
    cols:1, //Cut 1 columns
    rows:5, //Cut 5 Rows per page
    page:1 //Get page 1

var html = '<a href="' + atomUri + '" target="_blank">' + atomUri + '</a>';
document.getElementById('sample').innerHTML = html;

<body id="sample"></body>

< Add index.html and Drive Notepad setting >
After you add Drive Notepad on Chrome, you can find “Text Document” on create menu of your Google Drive.
If it’s your first time to use Drive Notepad, you will be asked like below.
Push “Login and/or grant app permissions…” and accept the question below.

Please change file name to “index.html”. After saving the file, close the tab.

Please change setting about “Manage apps”.
Please check “Use by default” of Drive Notepad row.
After that, you can use Drive Notepad like the other apps on Google Drive.

< Change sharing settings >
Select your folder to set public.
After that, follow the pic below.
Set “Public on the web” checked.

< Preparing HTML, CSS, Javascript >
Use Drive Notepad to prepare them.
Or edit with your own text editor and upload them.
My relative position is like below.

The link below is my web page created with Google Spreadsheet.
If you want, please use sources as sample.

< Extra script >
I developed imgur URL converter for my web page. If you want, please use this.