Request.Builder()
        .url(server.url("/"))
        .header("Accept", "text/plain")
        .build()
    val response = client.newCall(request).execute()
    assertThat(response.code).isEqualTo(200)
    assertThat(response.body.string()).isEqualTo("hello, OkHttp")

    val recorded = server.takeRequest()
    assertThat(recorded.headers["Accept"]).isEqualTo("text/plain")
    assertThat(recorded.headers["Accept-Encoding"]).isEqualTo("gzip")

import assertk.assertions.isSameAs
import java.io.IOException
import java.net.CookieManager
import java.net.Proxy
import java.net.ProxySelector
import java.net.ResponseCache
import java.net.SocketAddress
import java.net.URI
import java.time.Duration
import java.util.AbstractList
import javax.net.ssl.SSLSession
import javax.net.ssl.SSLSocketFactory
import kotlin.test.assertFailsWith
import mockwebserver3.MockResponse