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.. _akkahttp:
akka-http backend
=================
To use, add the following dependency to your project::
"com.softwaremill.sttp" %% "akka-http-backend" % "1.1.13"
This backend depends on `akka-http <http://doc.akka.io/docs/akka-http/current/scala/http/>`_. A fully **asynchronous** backend. Sending a request returns a response wrapped in a ``Future``.
Note that you'll also need an explicit dependency on akka-streams, as akka-http doesn't depend on any specific akka-streams version. So you'll also need to add, for example::
"com.typesafe.akka" %% "akka-stream" % "2.5.11"
Next you'll need to add an implicit value::
implicit val sttpBackend = AkkaHttpBackend()
// or, if you'd like to use an existing actor system:
implicit val sttpBackend = AkkaHttpBackend.usingActorSystem(actorSystem)
This backend supports sending and receiving `akka-streams <http://doc.akka.io/docs/akka/current/scala/stream/index.html>`_ streams of type ``akka.stream.scaladsl.Source[ByteString, Any]``.
To set the request body as a stream::
import com.softwaremill.sttp._
import com.softwaremill.sttp.akkahttp._
import akka.stream.scaladsl.Source
import akka.util.ByteString
val source: Source[ByteString, Any] = ...
sttp
.streamBody(source)
.post(uri"...")
To receive the response body as a stream::
import com.softwaremill.sttp._
import com.softwaremill.sttp.akkahttp._
import akka.stream.scaladsl.Source
import akka.util.ByteString
implicit val sttpBackend = AkkaHttpBackend()
val response: Future[Response[Source[ByteString, Any]]] =
sttp
.post(uri"...")
.response(asStream[Source[ByteString, Any]])
.send()
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