t

sttp.client

SttpBackend

trait SttpBackend[F[_], -S, -WS_HANDLER[_]] extends AnyRef

F

The type constructor in which responses are wrapped. E.g. Identity for synchronous backends, scala.concurrent.Future for asynchronous backends.

S

The type of streams that are supported by the backend. Nothing, if streaming requests/responses is not supported by this backend.

WS_HANDLER

The type of websocket handlers that are supported by this backend. The handler is parametrised by the value that is being returned when the websocket is established. NothingT, if websockets are not supported.

Note

Backends should try to classify exceptions into one of the categories specified by SttpClientException. Other exceptions should be thrown unchanged.

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Known Subclasses
DigestAuthenticationBackend, EitherBackend, FollowRedirectsBackend, HttpURLConnectionBackend, TryBackend, ListenerBackend, SttpBackendStub
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Abstract Value Members

  1. abstract def close(): F[Unit]
  2. abstract def openWebsocket[T, WS_RESULT](request: Request[T, S], handler: WS_HANDLER[WS_RESULT]): F[WebSocketResponse[WS_RESULT]]

    Opens a websocket, using the given backend-specific handler.

    Opens a websocket, using the given backend-specific handler.

    If the connection doesn't result in a websocket being opened, a failed effect is returned, or an exception is thrown (depending on F).

  3. abstract def responseMonad: MonadError[F]

    The effect wrapper for responses.

    The effect wrapper for responses. Allows writing wrapper backends, which map/flatMap over the return value of send and openWebsocket.

  4. abstract def send[T](request: Request[T, S]): F[Response[T]]

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