1 files changed, 51 insertions, 0 deletions
diff --git a/lib/websocket/constants.js b/lib/websocket/constants.js
new file mode 100644
index 0000000..406b8e3
--- /dev/null
+++ b/lib/websocket/constants.js
@@ -0,0 +1,51 @@
+'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
+const uid = '258EAFA5-E914-47DA-95CA-C5AB0DC85B11'
+
+/** @type {PropertyDescriptor} */
+const staticPropertyDescriptors = {
+  enumerable: true,
+  writable: false,
+  configurable: false
+}
+
+const states = {
+  CONNECTING: 0,
+  OPEN: 1,
+  CLOSING: 2,
+  CLOSED: 3
+}
+
+const opcodes = {
+  CONTINUATION: 0x0,
+  TEXT: 0x1,
+  BINARY: 0x2,
+  CLOSE: 0x8,
+  PING: 0x9,
+  PONG: 0xA
+}
+
+const maxUnsigned16Bit = 2 ** 16 - 1 // 65535
+
+const parserStates = {
+  INFO: 0,
+  PAYLOADLENGTH_16: 2,
+  PAYLOADLENGTH_64: 3,
+  READ_DATA: 4
+}
+
+const emptyBuffer = Buffer.allocUnsafe(0)
+
+module.exports = {
+  uid,
+  staticPropertyDescriptors,
+  states,
+  opcodes,
+  maxUnsigned16Bit,
+  parserStates,
+  emptyBuffer
+}