socket.io-parser

A socket.io encoder and decoder written in JavaScript complying with version 5 of socket.io-protocol. Used by socket.io and socket.io-client.

Compatibility table:

Parser version	Socket.IO server version	Protocol revision
3.x	1.x / 2.x	4
4.x	3.x	5

Parser API

socket.io-parser is the reference implementation of socket.io-protocol. Read the full API here: socket.io-protocol.

Example Usage

Encoding and decoding a packet

var parser = require('socket.io-parser');
var encoder = new parser.Encoder();
var packet = {
  type: parser.EVENT,
  data: 'test-packet',
  id: 13
};
encoder.encode(packet, function(encodedPackets) {
  var decoder = new parser.Decoder();
  decoder.on('decoded', function(decodedPacket) {
    // decodedPacket.type == parser.EVENT
    // decodedPacket.data == 'test-packet'
    // decodedPacket.id == 13
  });

  for (var i = 0; i < encodedPackets.length; i++) {
    decoder.add(encodedPackets[i]);
  }
});

Encoding and decoding a packet with binary data

var parser = require('socket.io-parser');
var encoder = new parser.Encoder();
var packet = {
  type: parser.BINARY_EVENT,
  data: {i: new Buffer(1234), j: new Blob([new ArrayBuffer(2)])},
  id: 15
};
encoder.encode(packet, function(encodedPackets) {
  var decoder = new parser.Decoder();
  decoder.on('decoded', function(decodedPacket) {
    // decodedPacket.type == parser.BINARY_EVENT
    // Buffer.isBuffer(decodedPacket.data.i) == true
    // Buffer.isBuffer(decodedPacket.data.j) == true
    // decodedPacket.id == 15
  });

  for (var i = 0; i < encodedPackets.length; i++) {
    decoder.add(encodedPackets[i]);
  }
});

See the test suite for more examples of how socket.io-parser is used.

License

MIT