packetdefs.js

var packet = require('packet');

exports.MAX_SEQ_NO = Math.pow(2, 31) - 1;

var packets = exports.packets =
{ header: '\
    b8( \
      &0x80/1:  \
        b16{b1 => control, b15 => type}, x16{0} \
      , -b32 => additional \
      , b32 => timestamp \
      , b32 => destination \
      | \
        b32{b1 => control, b31 => sequence} \
      , b32{b2 => position, b1 => inOrder, b29 => number} \
      , b32 => timestamp \
      , b32 => destination \
      ) \
    '
, handshake: '\
    -b32 => version \
  , -b32 => socketType \
  , b32 => sequence \
  , -b32 => maxPacketSize \
  , -b32 => windowSize \
  , -b32 => connectionType \
  , b32 => socketId \
  , b32 => synCookie \
  , b32 => address \
  , x96{0} \
  '
, acknowledgement: ''
, negativeack: ''
, ack2: ''
, shutdown: ''
, keepalive: ''
, statistics: '\
    b32 => rtt \
  , b32 => rttVariance \
  , b32 => availableBufferSize \
  , b32 => receivingRate \
  , b32 => linkCapacity \
  '
, messagedrop: '\
    b32 => firstSequence \
  , b32 => lastSequence \
  '
};

var parser = exports.parser = packet.createParser();
var serializer = exports.serializer = packet.createSerializer();

// TODO: Ugly. Parser cannot parse an empty packet.
serializer.packet('header', packets.header);
for (var name in packets) {
  parser.packet(name, packets[name]);
  if (name == 'header') continue;
  serializer.packet(name, packets.header + ',' + packets[name]);
}