在node.js中读取缓冲区对象

Question

I'm trying to get html page through this node module called Wreck

It should be very easy to get data but I'm unable to get them

'use strict';

var Wreck = require('wreck');

var url = 'http://www.google.it';

var callback = function(err, response, payload){
  Wreck.read(response, null, function(err, body){
      //here print out the html page
  });
};

Wreck.get(url, callback);

Here above a simple script just a copy from the readme of the developer. according to the documentation body should return a buffer object but how can I read inside a body object? I have read to use toJSON or toString() but I don't get any result

Answer 1

...but I don't get any result

You ARE getting a result, an empty Buffer , but it's not want you want, probably.

The fact is: you are using the read method wrong, passing it inside a callback to the get method. The methods get , post , put and delete already call read internaly and return the readable Buffer for you, in a callback. Take a look at the get doc :

get(uri, [options], callback)

Convenience method for GET operations.

• uri - The URI of the requested resource.
• options - Optional config object containing settings for both request and read operations.
• callback - The callback function using the signature function (err, response, payload) where:
  • err - Any error that may have occurred during handling of the request.
  • response - The HTTP Incoming Message object, which is also a readable stream.
  • payload - The payload in the form of a Buffer or (optionally) parsed JavaScript object (JSON).

So, the use of the get method is pretty straightforward (using your own example):

var callback = function(err, response, payload){
  console.log(payload.toString()); // converting the buffer to a string and logging
};

Wreck.get(url, callback);