* @throws IOException if connection fails
     */
    private void testConnection() throws IOException {
        // For now, just test basic connectivity to RPC endpoint
        try (java.net.Socket socket = new java.net.Socket()) {
            socket.connect(new java.net.InetSocketAddress(serverAddress, WITNESS_RPC_PORT), WITNESS_RPC_TIMEOUT_MS);
        } catch (IOException e) {

    } else {
      Protocol.HTTP_2
    }

  @Volatile
  private var canceled = false

  override val isResponseComplete: Boolean
    get() = stream?.isSourceComplete == true

  override val socket: Socket
    get() = stream!!

  override fun createRequestBody(
    request: Request,
    contentLength: Long,
  ): Sink = stream!!.sink

  override fun writeRequestHeaders(request: Request) {

          // This is an HTTP/1 upgrade. (This case includes web socket upgrades.)
          isUpgradeRequest && isUpgradeResponse -> {
            response
              .newBuilder()
              .body(
                UnreadableResponseBody(
                  response.body.contentType(),
                  response.body.contentLength(),
                ),
              ).socket(exchange.upgradeToSocket())
              .build()

 * address also includes the SSL socket factory, hostname verifier, and certificate pinner.
 *
 * HTTP requests that share the same [Address] may also share the same [Connection].
 */
class Address(
  uriHost: String,
  uriPort: Int,
  /** Returns the service that will be used to resolve IP addresses for hostnames. */
  @get:JvmName("dns") val dns: Dns,
  /** Returns the socket factory for new connections. */

}

// TCPOptions specify customizable TCP optimizations on raw socket
type TCPOptions struct {
	UserTimeout int // this value is expected to be in milliseconds

	// When the net.Conn is a remote drive this value is honored, we close the connection to remote peer proactively.
	DriveOPTimeout func() time.Duration

	SendBufSize int              // SO_SNDBUF size for the socket connection, NOTE: this sets server and client connection

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

import java.net.Socket
import java.util.concurrent.ConcurrentLinkedQueue
import java.util.concurrent.TimeUnit
import okhttp3.Address
import okhttp3.ConnectionPool
import okhttp3.Route
import okhttp3.internal.closeQuietly

 * limitations under the License.
 */
package okhttp3.internal.http2

import java.io.IOException

/** Thrown when an HTTP/2 stream is canceled without damage to the socket that carries it. */
class StreamResetException(
  @JvmField val errorCode: ErrorCode,

    hostname: String?,
    protocols: List<Protocol>,
  ) {
    // No TLS extensions if the socket class is custom.
    socketAdapters
      .find { it.matchesSocket(sslSocket) }
      ?.configureTlsExtensions(sslSocket, hostname, protocols)
  }

  override fun getSelectedProtocol(sslSocket: SSLSocket): String? =
    // No TLS extensions if the socket class is custom.

    compressing outbound web socket messages. Configure this with 0L to always compress outbound
    messages and `Long.MAX_VALUE` to never compress outbound messages. The default is 1024L which
    compresses messages of size 1 KiB and larger. (Inbound messages are compressed or not based on
    the web socket server's configuration.)

   *
   * [rfc_7230]: https://tools.ietf.org/html/rfc7230
   */
  HTTP_1_1("http/1.1"),

  /**
   * Chromium's binary-framed protocol that includes header compression, multiplexing multiple
   * requests on the same socket, and server-push. HTTP/1.1 semantics are layered on SPDY/3.
   *
   * Current versions of OkHttp do not support this protocol.
   */
  @Deprecated("OkHttp has dropped support for SPDY. Prefer {@link #HTTP_2}.")