node.js/ Getting buffer on data.socket

Question

I use node.js, and have the next code:

var server = net.createServer(function(socket) {
socket.on('data', function(d) {
console.log(d);}}

I see that it prints the next:

<Buffer 47 45 54 20 2f 20 48 54 54 50 2f 31 2e 31 0..>

Even if I open a conection in my localhost. What can be the reason? How I change it that it would get the http request?

If you want the HTTP request, you should use http.createServer. — robertklep
– robertklep, Commented Jun 14, 2013 at 12:23

gustavohenke · Accepted Answer · 2016-05-03 18:55:46Z

10

According to the docs, you must specify the encoding with the setEncoding() method to receive an string.
If you don't, you'll receive an Buffer with raw data because Node will not know what encoding you want - and Node deals with very low level networking.

For example:

var server = net.createServer(function(socket) {
  socket.setEncoding("utf8");
  socket.on('data', function(d) {
    console.log(d); // will be string
  }
}

If you don't want to, you can always call toString():

var server = net.createServer(function(socket) {
  socket.on('data', function(d) {
    console.log(d.toString());
  }
}

edited May 3, 2016 at 18:55

answered Jun 14, 2013 at 11:30

gustavohenke

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1 Comment

robertklep Over a year ago

Or use d.toString() as an alternative.

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