在http4s的中间件中获取cookies？

import org.http4s._
import org.http4s.dsl._
import org.http4s.implicits._
import org.http4s.server.middleware._

val cookieMiddleware: HttpMiddleware[IO] = { http: Http[IO] =>
  Kleisli { req: Request[IO] =>
    val cookies = req.cookies // 获取请求中的cookies
    http(req).map { res =>
      // 处理响应
      res
    }
  }
}

val service: Http[IO, Response[IO]] = ???
val serviceWithCookies = cookieMiddleware(service)