{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "urn:orbiplex:schema:middleware-channel-request-cancel:v1",
  "title": "Middleware Channel Request Cancel v1",
  "description": "Best-effort cancellation request bound to one request previously initiated by the control sender.",
  "type": "object",
  "additionalProperties": false,
  "required": ["schema", "schema/v", "cancel/target", "reason"],
  "properties": {
    "schema": {"const": "middleware-channel-request-cancel.v1"},
    "schema/v": {"const": 1},
    "cancel/target": {"$ref": "#/$defs/id"},
    "reason": {"type": "string", "minLength": 1, "maxLength": 256}
  },
  "$defs": {
    "id": {
      "type": "string",
      "minLength": 1,
      "maxLength": 256,
      "pattern": "^[A-Za-z0-9][A-Za-z0-9._:/-]*$"
    }
  },
  "x-dia-basis": [
    "orbidocs:doc/project/40-proposals/080-multiplexed-middleware-channel-executor.md"
  ]
}