Module rocket::response

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Types and traits to build and send responses.

The return type of a Rocket handler can be any type that implements the Responder trait, which means that the type knows how to generate a Response. Among other things, this module contains several such types.


Many of the built-in Responder types chain responses: they take in another Responder and add, remove, or change information in the response. In other words, many Responder types are built to compose well. As a result, you’ll often have types of the form A<B<C>> consisting of three Responders A, B, and C. This is normal and encouraged as the type names typically illustrate the intended response.


  • Contains types that set the Content-Type of a response.
  • Contains types that set the status code and corresponding headers of a response.
  • Potentially infinite async Stream response types.


  • The body of a Response.
  • Builder for the Response type.
  • Debug prints the internal value before forwarding to the 500 error catcher.
  • Sets a “flash” cookie that will be removed when it is accessed. The analogous request type is FlashMessage.
  • An empty redirect response to a given URL.
  • A response, as returned by types implementing Responder.


  • Trait implemented by types that generate responses for clients.

Type Aliases§