{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "$id": "https://synacl.com/protocol/v1/schemas/image-chunk.json",
  "title": "Event image chunk (experimental)",
  "description": "EXPERIMENTAL — may change without a version bump. One base64 slice of an image announced by image-meta, on `<prefix>/devices/{deviceId}/image/chunk`. Send them in `idx` order after the header.",
  "type": "object",
  "required": [
    "imageId",
    "idx",
    "data"
  ],
  "properties": {
    "imageId": {
      "description": "The `imageId` of the image-meta header.",
      "type": "string",
      "maxLength": 96
    },
    "idx": {
      "description": "0-based chunk index, less than the header's `chunks`.",
      "type": "integer",
      "minimum": 0,
      "maximum": 1023
    },
    "data": {
      "description": "Base64 slice of the image bytes. The reference fog firmware sends 2048 characters per chunk; up to 4096 are accepted.",
      "type": "string",
      "maxLength": 4096
    }
  },
  "additionalProperties": false
}