if your http4s version is 0.21.x
simply set http4s-finagle to 0.21+
libraryDependencies += "org.http4s" %% "http4s-finagle" % "0.21+"if in any circumstance you need fix the finagle version(most cases not, finagle api is quite stable)
libraryDependencies += "org.http4s" %% "http4s-finagle" % "0.21.4-20.4.1-0"
^ ^ ^
http4s fingale patch
To run Http4s app on Finagle Http server, simply just use Finagle.mkService to adapt Http4s HttpApp[F] to Fingale Service[Request, Response].
import org.http4s.finagle._
val http4sService: HttpApp[IO] = ???
val server = Http.server.serve(":8080", Finagle.mkService(http4sService))
Await.ready(server)import org.http4s.finagle._
import com.twitter.finagle.Http
val host = "blog.oyanglul.us"
Finagle.mkClient[IO](Http.client.withTls(host).newService(s"$host:443")).use {
client: Client[IO] =>
...
}Please refer to the Test which is fully functional server and client.