agent-base

Turn a function into an http.Agent instance

This module provides an http.Agent generator. That is, you pass it an async callback function, and it returns a new http.Agent instance that will invoke the given callback function when sending outbound HTTP requests.

Some subclasses:

Here's some more interesting uses of agent-base. Send a pull request to list yours!

• http-proxy-agent: An HTTP(s) proxy http.Agent implementation for HTTP endpoints
• https-proxy-agent: An HTTP(s) proxy http.Agent implementation for HTTPS endpoints
• pac-proxy-agent: A PAC file proxy http.Agent implementation for HTTP and HTTPS
• socks-proxy-agent: A SOCKS (v4a) proxy http.Agent implementation for HTTP and HTTPS

Installation

Install with npm:

$ npm install agent-base

Example

Here's a minimal example that creates a new net.Socket connection to the server for every HTTP request (i.e. the equivalent of agent: false option):

var url = require('url');
var net = require('net');
var http = require('http');
var agent = require('agent-base');

var endpoint = 'http://nodejs.org/api/';
var opts = url.parse(endpoint);

// This is the important part!
opts.agent = agent(function (req, opts, fn) {
  if (!opts.port) opts.port = 80;
  var socket = net.connect(opts);
  fn(null, socket);
});

// Everything else works just like normal...
http.get(opts, function (res) {
  console.log('"response" event!', res.headers);
  res.pipe(process.stdout);
});

License

(The MIT License)

Copyright (c) 2013 Nathan Rajlich <nathan@tootallnate.net>

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.