eclipse-vertx/vert.x · error

407 Proxy Authentication Required

Error message

407 Proxy Authentication Required

What it means

Constant defining the 407 Proxy Authentication Required response expectation: with expecting(SC_PROXY_AUTHENTICATION_REQUIRED), a 407 response fails the request future. The client must authenticate with the proxy first; the 'message' is the reason attached to the failure.

Source

Thrown at vertx-core/src/main/java/io/vertx/core/http/HttpResponseExpectation.java:185

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

  /**
   * 405 Method Not Allowed
   */
  HttpResponseExpectation SC_METHOD_NOT_ALLOWED = status(405);

  /**
   * 406 Not Acceptable
   */
  HttpResponseExpectation SC_NOT_ACCEPTABLE = status(406);

  /**
   * 407 Proxy Authentication Required
   */
  HttpResponseExpectation SC_PROXY_AUTHENTICATION_REQUIRED = status(407);

  /**
   * 408 Request Timeout
   */
  HttpResponseExpectation SC_REQUEST_TIMEOUT = status(408);

  /**
   * 409 Conflict
   */
  HttpResponseExpectation SC_CONFLICT = status(409);

  /**
   * 410 Gone
   */
  HttpResponseExpectation SC_GONE = status(410);

  /**
   * 411 Length Required

View on GitHub (pinned to fb308bd8c3)

Solutions

1. Configure proxy credentials on the client's ProxyOptions
2. Retry after authenticating with the proxy

When it happens

Trigger: Thrown at vertx-core/src/main/java/io/vertx/core/http/HttpResponseExpectation.java:185 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/b32f530c036cde20. Report an issue: GitHub.