- Go to Digital Ocean
- Create new ubuntu droplet
The standard way of understanding the HTTP protocol is via the request reply pattern. Each HTTP transaction consists of a finitely bounded HTTP request and a finitely bounded HTTP response.
However it's also possible for both parts of an HTTP 1.1 transaction to stream their possibly infinitely bounded data. The advantages is that the sender can send data that is beyond the sender's memory limit, and the receiver can act on
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
var page = require('webpage').create(), | |
url = 'http://example.com/'; | |
// Put the event handlers somewhere in the code before the action of | |
// interest (opening the page in question or clicking something) | |
// http://phantomjs.org/api/webpage/handler/on-console-message.html | |
page.onConsoleMessage = function(msg, lineNum, sourceId) { | |
console.log('CONSOLE: ' + msg + ' (from line #' + lineNum + ' in "' + sourceId + '")'); | |
}; |