{
  "$id": "websocket-message.json",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "WebSocket Message",
  "description": "Schema describing a complete WebSocket message. A message may consist of one or more frames and carries either text or binary data between endpoints.",
  "type": "object",
  "required": [
    "type",
    "data"
  ],
  "properties": {
    "type": {
      "type": "string",
      "enum": [
        "text",
        "binary"
      ],
      "description": "The type of the message, determined by the opcode of the first frame. Text messages contain UTF-8 data; binary messages contain raw bytes."
    },
    "data": {
      "type": "string",
      "description": "The message payload. For text messages this is a UTF-8 string. For binary messages this is base64-encoded binary data."
    },
    "size": {
      "type": "integer",
      "minimum": 0,
      "description": "The size of the message payload in bytes."
    },
    "fragmented": {
      "type": "boolean",
      "default": false,
      "description": "Whether the message was delivered across multiple frames using fragmentation."
    },
    "compressed": {
      "type": "boolean",
      "default": false,
      "description": "Whether the message was compressed using a negotiated extension such as permessage-deflate."
    },
    "timestamp": {
      "type": "string",
      "format": "date-time",
      "description": "The time at which the message was sent or received."
    }
  },
  "additionalProperties": false
}