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73 changes: 67 additions & 6 deletions lib/web/websocket/constants.js
Original file line number Diff line number Diff line change
@@ -1,31 +1,65 @@
'use strict'

// This is a Globally Unique Identifier unique used
// to validate that the endpoint accepts websocket
// connections.
// See https://www.rfc-editor.org/rfc/rfc6455.html#section-1.3
/**
* This is a Globally Unique Identifier unique used to validate that the
* endpoint accepts websocket connections.
* @see https://www.rfc-editor.org/rfc/rfc6455.html#section-1.3
* @type {'258EAFA5-E914-47DA-95CA-C5AB0DC85B11'}
*/
const uid = '258EAFA5-E914-47DA-95CA-C5AB0DC85B11'

/** @type {PropertyDescriptor} */
/**
* @type {PropertyDescriptor}
*/
const staticPropertyDescriptors = {
enumerable: true,
writable: false,
configurable: false
}

/**
* The states of the WebSocket connection.
*
* @readonly
* @enum
* @property {0} CONNECTING
* @property {1} OPEN
* @property {2} CLOSING
* @property {3} CLOSED
*/
const states = {
CONNECTING: 0,
OPEN: 1,
CLOSING: 2,
CLOSED: 3
}

/**
* @readonly
* @enum
* @property {0} NOT_SENT
* @property {1} PROCESSING
* @property {2} SENT
*/
const sentCloseFrameState = {
NOT_SENT: 0,
PROCESSING: 1,
SENT: 2
}

/**
* The WebSocket opcodes.
*
* @readonly
* @enum
* @property {0x0} CONTINUATION
* @property {0x1} TEXT
* @property {0x2} BINARY
* @property {0x8} CLOSE
* @property {0x9} PING
* @property {0xA} PONG
* @see https://datatracker.ietf.org/doc/html/rfc6455#section-5.2
*/
const opcodes = {
CONTINUATION: 0x0,
TEXT: 0x1,
Expand All @@ -35,17 +69,44 @@ const opcodes = {
PONG: 0xA
}

const maxUnsigned16Bit = 2 ** 16 - 1 // 65535
/**
* The maximum value for an unsigned 16-bit integer.
*
* @type {65535} 2 ** 16 - 1
*/
const maxUnsigned16Bit = 65535

/**
* The states of the parser.
*
* @readonly
* @enum
* @property {0} INFO
* @property {2} PAYLOADLENGTH_16
* @property {3} PAYLOADLENGTH_64
* @property {4} READ_DATA
*/
const parserStates = {
INFO: 0,
PAYLOADLENGTH_16: 2,
PAYLOADLENGTH_64: 3,
READ_DATA: 4
}

/**
* An empty buffer.
*
* @type {Buffer}
*/
const emptyBuffer = Buffer.allocUnsafe(0)

/**
* @readonly
* @property {1} text
* @property {2} typedArray
* @property {3} arrayBuffer
* @property {4} blob
*/
const sendHints = {
text: 1,
typedArray: 2,
Expand Down
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