Sample Class

package im.actor.server.sms

import java.net.URLEncoder

import akka.actor.ActorSystem
import akka.http.scaladsl.Http
import akka.http.scaladsl.model._
import com.typesafe.config.Config
import akka.stream.Materializer

import scala.concurrent.Future

final class MyOwnClient(config: Config)(implicit system: ActorSystem, materializer: Materializer) extends SmsEngine {

  val defaultSmsTemplate: String = "Your MIM Activation code is : "

  private val url = "http://xxx.com/magfaHttpService"
  private val service = config.getString("service")
  private val domain = config.getString("domain")
  private val username = config.getString("username")
  private val password = config.getString("password")
  private val from = config.getString("from")

  override def send(phoneNumber: Long, message: String): Future[Unit] = {

    val http = Http()

    val req = url + "?service=" + service + "&domain=" + domain + "&username=" + username +
      "&password=" + password + "&from=" + from + "&to=" + phoneNumber.toString +
      "&message=" + URLEncoder.encode(defaultSmsTemplate + message, "ISO-8859-1")

    val f = http.singleRequest(HttpRequest(uri = req)) map {
      case HttpResponse(StatusCodes.OK, _, _, _) ⇒ ()
      case resp ⇒
        throw new Exception(s"Wrong response: $resp")
    }

    f onFailure {
      case e ⇒
        system.log.error(e, "Failed to send sms through Magfa")
    }
    f
  }
}