eclipse-vertx/vert.x · error

401 Unauthorized

Error message

401 Unauthorized

What it means

Constant defining the 401 Unauthorized response expectation: with expecting(SC_UNAUTHORIZED), a 401 response fails the request future. 401 means authentication is required and was absent/invalid; the 'message' is the reason attached to the expectation failure.

Source

Thrown at vertx-core/src/main/java/io/vertx/core/http/HttpResponseExpectation.java:155

  /**
   * 308 Permanent Redirect (RFC7538)
   */
  HttpResponseExpectation SC_PERMANENT_REDIRECT = status(308);

  /**
   * Any 4XX client error
   */
  HttpResponseExpectation SC_CLIENT_ERRORS = status(400, 500);

  /**
   * 400 Bad Request
   */
  HttpResponseExpectation SC_BAD_REQUEST = status(400);

  /**
   * 401 Unauthorized
   */
  HttpResponseExpectation SC_UNAUTHORIZED = status(401);

  /**
   * 402 Payment Required
   */
  HttpResponseExpectation SC_PAYMENT_REQUIRED = status(402);

  /**
   * 403 Forbidden
   */
  HttpResponseExpectation SC_FORBIDDEN = status(403);

  /**
   * 404 Not Found
   */
  HttpResponseExpectation SC_NOT_FOUND = status(404);

  /**
   * 405 Method Not Allowed

View on GitHub (pinned to fb308bd8c3)

Solutions

1. Provide valid credentials (Authorization header) before retrying
2. Handle the failed future for expired or missing tokens

When it happens

Trigger: Thrown at vertx-core/src/main/java/io/vertx/core/http/HttpResponseExpectation.java:155 when the library encounters an invalid state.

Common situations: See trigger scenarios.

Understand the failure class

• Authentication and authorization failures — expired tokens, bad credentials, and missing scopes.

AI-assisted analysis of eclipse-vertx/vert.x@fb308bd8c3 (2026-09-06). Data as JSON: /api/errors/d47c58411ecce7e3. Report an issue: GitHub.