HTTPS Client and Server Example

Client Example

zio-http-example/src/main/scala/example/HttpsClient.scala

package example

import zio._

import zio.http._
import zio.http.netty.NettyConfig
import zio.http.netty.client.NettyClientDriver

object HttpsClient extends ZIOAppDefault {
  val url     = URL.decode("https://jsonplaceholder.typicode.com/todos/1").toOption.get
  val headers = Headers(Header.Host("jsonplaceholder.typicode.com"))

  val sslConfig = ClientSSLConfig.FromTrustStoreResource(
    trustStorePath = "truststore.jks",
    trustStorePassword = "changeit",
  )

  val clientConfig = ZClient.Config.default.ssl(sslConfig)

  val program = for {
    data <- ZClient.batched(Request.get(url).addHeaders(headers))
    _    <- Console.printLine(data)
  } yield ()

  val run =
    program.provide(
      ZLayer.succeed(clientConfig),
      Client.customized,
      NettyClientDriver.live,
      DnsResolver.default,
      ZLayer.succeed(NettyConfig.default),
    )

}

Server Example

zio-http-example/src/main/scala/example/HttpsHelloWorld.scala

package example

import zio._

import zio.http._

object HttpsHelloWorld extends ZIOAppDefault {
  // Create HTTP route
  val routes: Routes[Any, Response] = Routes(
    Method.GET / "text" -> handler(Response.text("Hello World!")),
    Method.GET / "json" -> handler(Response.json("""{"greetings": "Hello World!"}""")),
  )

  /**
   * In this example, a private key and certificate are loaded from resources.
   * For testing this example with curl, make sure the private key "server.key",
   * and the certificate "server.crt" are inside the resources directory, which
   * is by default "src/main/resources".
   *
   * You can use the following command to create a self-signed TLS certificate.
   * This command will create two files: "server.key" and "server.crt".
   *
   * openssl req -x509 -newkey rsa:4096 -sha256 -days 365 -nodes \ -keyout
   * server.key -out server.crt \ -subj "/CN=example.com/OU=?/O=?/L=?/ST=?/C=??"
   * \ -addext "subjectAltName=DNS:example.com,DNS:www.example.com,IP:10.0.0.1"
   *
   * Alternatively you can create the keystore and certificate using the
   * following link
   * https://medium.com/@maanadev/netty-with-https-tls-9bf699e07f01
   */

  val sslConfig = SSLConfig.fromResource(
    behaviour = SSLConfig.HttpBehaviour.Accept,
    certPath = "server.crt",
    keyPath = "server.key",
  )

  private val config = Server.Config.default
    .port(8090)
    .ssl(sslConfig)

  private val configLayer = ZLayer.succeed(config)

  override val run =
    Server.serve(routes).provide(configLayer, Server.live)

}