Question

根据akka-http extractClientIP和Documentation：

akka-http服务器引擎将Remote-Address标头添加到每个如果相应的设置，请自动请求 akka.http.server.remote-address-header设置为on。默认情况下是设置为关闭。

已相应地设置了application.conf

akka {
  http {
    server {
      remote-address-header = on
    }
  }
}

以下测试无法从请求标头中提取Remote-Address

import akka.http.scaladsl.server.Route
import akka.http.scaladsl.client.RequestBuilding
import akka.http.scaladsl.model._
import akka.http.scaladsl.testkit.ScalatestRouteTest

"Remote-Address added to request header by akka-http" in {
  val request = RequestBuilding.Get("/").withHeaders(`User-Agent`(this.getClass.getSimpleName))
  val miniRoute: Route = { ctx => ctx.complete("Always Succeed") }

  request ~> miniRoute ~> check {
    assert(responseAs[String] == "Always Succeed")
  }

  //confirm akka config setting is correct
  assert(ConfigFactory.load().getString("akka.http.server.remote-address-header") == "on", "FAILED: please set application.conf: akka.http.server.remote-address-header = on")

  val remoteIP: Option[HttpHeader] = request.headers.find(_.name == "Remote-Address")
  assert(remoteIP.nonEmpty, "FAILED: Remote-Address missing in Request Headers")
}

问题 akka-http是否应在请求标头中自动注入 Remote-Address？如果您可以通过编程方式设置akka.http.server.remote-address-header配置，可以显示如何重写此测试，我也很感激。

Answer 1

您遇到此问题，因为testkit的ScalatestRouteTest未执行Remote-Address的自动添加。它仅发生在Http()对象级别（有关详细信息，请参阅source）。

如果您想要查看它的实际效果，可以启动正在运行的服务器

object Tmp extends App {
  implicit val sys = ActorSystem("tmp")
  implicit val mat = ActorMaterializer()

  val route = headerValueByName("Remote-Address") { complete(_) }

  Http().bindAndHandle(route, "localhost", 8080)
}

并且根据您的配置（在您的问题中是正确的），您应该获得200 OK（如果设置为on）或400 Bad Request（如果设置为off ）。

Answer 2

根据您的建议，我在下面进行了测试，该测试按预期工作。希望这对其他人有用。

import akka.http.scaladsl.Http
import akka.stream.ActorMaterializer
import akka.http.scaladsl.server.directives.{HeaderDirectives, RouteDirectives}
import com.typesafe.config.ConfigFactory

/** Verify that akka-http engine injects the "Remote-Address" header in the request headers
  * if the config key "akka.http.server.remote-address-header = on"
  *
  * TESTING (set config on/off via command line argument)
  * 1. Run the mini web server
  *    sbt "runMain blabla.AkkaRemoteAddressTest on"
  *
  * 2. Open Git-Bash and type:
  *    $ curl -s http://localhost:2017
  *      (console output) Remote-Address = 127.0.0.1:58208 (Thursday, 02 Mar 2017 - 18:54:55)
  *    $ curl -s http://$COMPUTERNAME:2017
  *      (console output) Remote-Address = 10.5.34.101:58285 (Thursday, 02 Mar 2017 - 18:57:30)
  */
object AkkaRemoteAddressTest {
  def main(args: Array[String]): Unit = {
    val configValue =
      if (args.isEmpty) "on"
      else if (args(0).toLowerCase != "on" && args(0).toLowerCase != "off") "on"
      else args(0)

    val miniConfig = ConfigFactory.parseString(
      s"""
        |akka.http.server.remote-address-header = $configValue
      """.stripMargin)

    implicit val sys = ActorSystem("AkkaRemoteAddressTest", miniConfig)
    implicit val mat = ActorMaterializer()

    val sdfmt = new java.text.SimpleDateFormat("EEEE, dd MMM yyyy - HH:mm:ss")

    val route = HeaderDirectives.headerValueByName("Remote-Address") {
      remaddr => RouteDirectives.complete(s"Remote-Address = $remaddr (${sdfmt.format(java.util.Calendar.getInstance.getTime)})")
    }

    Http().bindAndHandle(route, "0.0.0.0", 2017)
  }
}

akka-http不会在请求标头中添加Remote-Address

2 个答案: