初始化

node_modules/undici/lib/web/websocket/constants.js

@@ -0,0 +1,126 @@
+'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
+ * @type {'258EAFA5-E914-47DA-95CA-C5AB0DC85B11'}
+ */
+const uid = '258EAFA5-E914-47DA-95CA-C5AB0DC85B11'
+
+/**
+ * @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 = {
+  SENT: 1,
+  RECEIVED: 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,
+  BINARY: 0x2,
+  CLOSE: 0x8,
+  PING: 0x9,
+  PONG: 0xA
+}
+
+/**
+ * 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,
+  arrayBuffer: 3,
+  blob: 4
+}
+
+module.exports = {
+  uid,
+  sentCloseFrameState,
+  staticPropertyDescriptors,
+  states,
+  opcodes,
+  maxUnsigned16Bit,
+  parserStates,
+  emptyBuffer,
+  sendHints
+}