mqtt stuff added

2018-05-16 10:44:10 +02:00
parent 74584cdbbe
commit c7eb46b346
499 changed files with 55775 additions and 19 deletions
--- a/node_modules/mqtt-packet/constants.js
+++ b/node_modules/mqtt-packet/constants.js
@ -0,0 +1,111 @@
+'use strict'
+
+var Buffer = require('safe-buffer').Buffer
+
+/* Protocol - protocol constants */
+var protocol = module.exports
+
+/* Command code => mnemonic */
+protocol.types = {
+  0: 'reserved',
+  1: 'connect',
+  2: 'connack',
+  3: 'publish',
+  4: 'puback',
+  5: 'pubrec',
+  6: 'pubrel',
+  7: 'pubcomp',
+  8: 'subscribe',
+  9: 'suback',
+  10: 'unsubscribe',
+  11: 'unsuback',
+  12: 'pingreq',
+  13: 'pingresp',
+  14: 'disconnect',
+  15: 'reserved'
+}
+
+/* Mnemonic => Command code */
+protocol.codes = {}
+for (var k in protocol.types) {
+  var v = protocol.types[k]
+  protocol.codes[v] = k
+}
+
+/* Header */
+protocol.CMD_SHIFT = 4
+protocol.CMD_MASK = 0xF0
+protocol.DUP_MASK = 0x08
+protocol.QOS_MASK = 0x03
+protocol.QOS_SHIFT = 1
+protocol.RETAIN_MASK = 0x01
+
+/* Length */
+protocol.LENGTH_MASK = 0x7F
+protocol.LENGTH_FIN_MASK = 0x80
+
+/* Connack */
+protocol.SESSIONPRESENT_MASK = 0x01
+protocol.SESSIONPRESENT_HEADER = Buffer.from([protocol.SESSIONPRESENT_MASK])
+protocol.CONNACK_HEADER = Buffer.from([protocol.codes['connack'] << protocol.CMD_SHIFT])
+
+/* Connect */
+protocol.USERNAME_MASK = 0x80
+protocol.PASSWORD_MASK = 0x40
+protocol.WILL_RETAIN_MASK = 0x20
+protocol.WILL_QOS_MASK = 0x18
+protocol.WILL_QOS_SHIFT = 3
+protocol.WILL_FLAG_MASK = 0x04
+protocol.CLEAN_SESSION_MASK = 0x02
+protocol.CONNECT_HEADER = Buffer.from([protocol.codes['connect'] << protocol.CMD_SHIFT])
+
+function genHeader (type) {
+  return [0, 1, 2].map(function (qos) {
+    return [0, 1].map(function (dup) {
+      return [0, 1].map(function (retain) {
+        var buf = new Buffer(1)
+        buf.writeUInt8(
+          protocol.codes[type] << protocol.CMD_SHIFT |
+          (dup ? protocol.DUP_MASK : 0) |
+          qos << protocol.QOS_SHIFT | retain, 0, true)
+        return buf
+      })
+    })
+  })
+}
+
+/* Publish */
+protocol.PUBLISH_HEADER = genHeader('publish')
+
+/* Subscribe */
+protocol.SUBSCRIBE_HEADER = genHeader('subscribe')
+
+/* Unsubscribe */
+protocol.UNSUBSCRIBE_HEADER = genHeader('unsubscribe')
+
+/* Confirmations */
+protocol.ACKS = {
+  unsuback: genHeader('unsuback'),
+  puback: genHeader('puback'),
+  pubcomp: genHeader('pubcomp'),
+  pubrel: genHeader('pubrel'),
+  pubrec: genHeader('pubrec')
+}
+
+protocol.SUBACK_HEADER = Buffer.from([protocol.codes['suback'] << protocol.CMD_SHIFT])
+
+/* Protocol versions */
+protocol.VERSION3 = Buffer.from([3])
+protocol.VERSION4 = Buffer.from([4])
+
+/* QoS */
+protocol.QOS = [0, 1, 2].map(function (qos) {
+  return Buffer.from([qos])
+})
+
+/* Empty packets */
+protocol.EMPTY = {
+  pingreq: Buffer.from([protocol.codes['pingreq'] << 4, 0]),
+  pingresp: Buffer.from([protocol.codes['pingresp'] << 4, 0]),
+  disconnect: Buffer.from([protocol.codes['disconnect'] << 4, 0])
+}