127 lines
2.1 KiB
JavaScript
127 lines
2.1 KiB
JavaScript
'use strict';
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/**
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* This is a Globally Unique Identifier unique used to validate that the
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* endpoint accepts websocket connections.
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* @see https://www.rfc-editor.org/rfc/rfc6455.html#section-1.3
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* @type {'258EAFA5-E914-47DA-95CA-C5AB0DC85B11'}
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*/
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const uid = '258EAFA5-E914-47DA-95CA-C5AB0DC85B11';
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/**
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* @type {PropertyDescriptor}
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*/
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const staticPropertyDescriptors = {
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enumerable: true,
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writable: false,
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configurable: false,
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};
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/**
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* The states of the WebSocket connection.
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*
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* @readonly
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* @enum
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* @property {0} CONNECTING
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* @property {1} OPEN
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* @property {2} CLOSING
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* @property {3} CLOSED
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*/
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const states = {
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CONNECTING: 0,
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OPEN: 1,
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CLOSING: 2,
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CLOSED: 3,
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};
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/**
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* @readonly
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* @enum
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* @property {0} NOT_SENT
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* @property {1} PROCESSING
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* @property {2} SENT
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*/
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const sentCloseFrameState = {
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SENT: 1,
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RECEIVED: 2,
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};
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/**
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* The WebSocket opcodes.
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*
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* @readonly
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* @enum
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* @property {0x0} CONTINUATION
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* @property {0x1} TEXT
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* @property {0x2} BINARY
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* @property {0x8} CLOSE
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* @property {0x9} PING
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* @property {0xA} PONG
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* @see https://datatracker.ietf.org/doc/html/rfc6455#section-5.2
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*/
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const opcodes = {
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CONTINUATION: 0x0,
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TEXT: 0x1,
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BINARY: 0x2,
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CLOSE: 0x8,
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PING: 0x9,
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PONG: 0xa,
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};
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/**
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* The maximum value for an unsigned 16-bit integer.
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*
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* @type {65535} 2 ** 16 - 1
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*/
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const maxUnsigned16Bit = 65535;
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/**
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* The states of the parser.
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*
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* @readonly
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* @enum
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* @property {0} INFO
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* @property {2} PAYLOADLENGTH_16
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* @property {3} PAYLOADLENGTH_64
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* @property {4} READ_DATA
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*/
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const parserStates = {
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INFO: 0,
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PAYLOADLENGTH_16: 2,
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PAYLOADLENGTH_64: 3,
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READ_DATA: 4,
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};
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/**
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* An empty buffer.
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*
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* @type {Buffer}
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*/
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const emptyBuffer = Buffer.allocUnsafe(0);
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/**
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* @readonly
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* @property {1} text
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* @property {2} typedArray
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* @property {3} arrayBuffer
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* @property {4} blob
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*/
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const sendHints = {
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text: 1,
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typedArray: 2,
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arrayBuffer: 3,
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blob: 4,
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};
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module.exports = {
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uid,
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sentCloseFrameState,
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staticPropertyDescriptors,
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states,
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opcodes,
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maxUnsigned16Bit,
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parserStates,
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emptyBuffer,
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sendHints,
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};
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