* attribute in the TLS handshake. Unlike the rest of the HTTP exchange, this name is sent in
   * cleartext and may be monitored or blocked by a proxy or other middlebox.
   */
  val handshakeServerNames: List<String>

  init {
    if (socket is SSLSocket) {
      try {
        this.handshake = socket.session.handshake()

          proxy: Proxy,
        ) = TODO()

        override fun secureConnectStart(call: Call) = TODO()

        override fun secureConnectEnd(
          call: Call,
          handshake: Handshake?,
        ) = TODO()

        override fun connectEnd(
          call: Call,
          inetSocketAddress: InetSocketAddress,
          proxy: Proxy,
          protocol: Protocol?,

    val proxyAuthorization = response.code == 407
    val proxy = route?.proxy ?: Proxy.NO_PROXY

    for (challenge in challenges) {
      if (!"Basic".equals(challenge.scheme, ignoreCase = true)) {
        continue
      }

      val dns = route?.address?.dns ?: defaultDns
      val auth =
        if (proxyAuthorization) {
          val proxyAddress = proxy.address() as InetSocketAddress

 * [newFixedLengthSource(0)][newFixedLengthSource] and may skip reading and closing that source.
 */
class Http1ExchangeCodec(
  /** The client that configures this stream. May be null for HTTPS proxy tunnels. */
  private val client: OkHttpClient?,
  override val carrier: ExchangeCodec.Carrier,
  private val source: BufferedSource,
  private val sink: BufferedSink,
) : ExchangeCodec {
  private var state = STATE_IDLE

  }

  /**
   * Invoked after proxy selection.
   *
   * Note that the list of proxies is never null, but it may be a list containing
   * only [Proxy.NO_PROXY]. This comes up in several situations:
   *
   * * If neither a proxy nor proxy selector is configured.
   * * If the proxy is configured explicitly as [Proxy.NO_PROXY].
   * * If the proxy selector returns only [Proxy.NO_PROXY].
   * * If the proxy selector returns an empty list or null.

    var client = OkHttpClient.Builder().build()
    assertThat(client.proxy).isNull()
    assertThat(client.proxySelector)
      .isNotInstanceOf(NullProxySelector::class.java)
    client =
      OkHttpClient.Builder()
        .proxy(Proxy.NO_PROXY)
        .build()
    assertThat(client.proxy).isSameAs(Proxy.NO_PROXY)
    assertThat(client.proxySelector)
      .isInstanceOf(NullProxySelector::class.java)

 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package okhttp3.internal.connection

import java.io.IOException
import java.net.InetAddress
import java.net.Proxy
import java.net.Socket
import okhttp3.Connection
import okhttp3.Handshake
import okhttp3.HttpUrl
import okhttp3.Protocol
import okhttp3.Route

/**

      return !"Connection".equals(fieldName, ignoreCase = true) &&
        !"Keep-Alive".equals(fieldName, ignoreCase = true) &&
        !"Proxy-Authenticate".equals(fieldName, ignoreCase = true) &&
        !"Proxy-Authorization".equals(fieldName, ignoreCase = true) &&
        !"TE".equals(fieldName, ignoreCase = true) &&
        !"Trailers".equals(fieldName, ignoreCase = true) &&

  }

  /** Respond to a proxy authorization challenge.  */
  @ParameterizedTest
  @ArgumentsSource(ProtocolParamProvider::class)
  fun proxyAuthenticateOnConnect(
    protocol: Protocol,
    mockWebServer: MockWebServer,
  ) {
    setUp(protocol, mockWebServer)
    server.enqueue(
      MockResponse(
        code = 407,
        headers = headersOf("Proxy-Authenticate", "Basic realm=\"localhost\""),

      .assertLogMatch(Regex("""connectStart: ${url.host}/.+ DIRECT"""))
      .assertLogMatch(Regex("""connectEnd: http/1.1"""))
      .assertLogMatch(
        Regex(
          """connectionAcquired: Connection\{${url.host}:\d+, proxy=DIRECT hostAddress=${url.host}/.+ cipherSuite=none protocol=http/1\.1\}""",
        ),
      )
      .assertLogMatch(Regex("""requestHeadersStart"""))
      .assertLogMatch(Regex("""requestHeadersEnd"""))