Requests-Pool

A simple node module to make http requests using a pool.
It'll allow you to limit your requests to avoid the crash of distant server when you're crawling.

Usage

var Rp = require('requests-pool');
var rp = new Rp(100);
 
rp.query(options, datas, function(errors, res) {
    if (errors)
        throw errors;
});

It's using the http.request() node method, so errors will be the error throwed by this method and res the object sent to the callback of this object. options are the options sent as the first argument of this method.
datas are the datas you want to send if you are doing a POST request.

Documentation

new rp(max)

max is the number of maximum simultaneous requests. Default value is 100.

rp.max

A getter/setter for the number of maximum simultaneous requests.

rp.current

A getter for the number of current requests.

rp.waiting

A getter for the number of waiting requests.

rp.alive

A getter to know if the request pool is alive. If false, no more requests can be added.

rp.request(options[, data], cb)

options is the same argument as passed to http.request() native method.
data is the data sent used in a POST request. If not null, the header fields Content-Type and Content-Length will be automatically filled.
cb is a callback that take two arguments: the error (or undefined) and the res object getted by the callback of the http.request() method (or undefined if an error occur).
If you want to use https, you need to set options.protocol to 'https'.
You can set options.retry to true if you want to relaunch the request if it fails.

rp.exit()

Remove all the current pending requests and no more can be added.

rp.live()

May be used after rp.exit to make the request pool re-usable.

Authors

Emeraude