Example of http4k server and client

Http4kClientExample.kt

import org.http4k.client.JavaHttpClient
import org.http4k.core.Method
import org.http4k.core.Request
import org.http4k.core.then
import org.http4k.filter.DebuggingFilters.PrintResponse

fun main() {
    val client = JavaHttpClient()
    val printingClient = PrintResponse().then(client)

    printingClient(Request(Method.GET, "http://localhost:9000/ping"))
}

Http4kServerExample.kt

import org.http4k.core.Request
import org.http4k.core.Response
import org.http4k.core.Status.Companion.OK
import org.http4k.server.SunHttp
import org.http4k.server.asServer

fun main() {
    val server = { _: Request -> Response(OK).body("pong") }
    server.asServer(SunHttp(9000)).start()
}