@Throws(IOException::class)
    fun socket(
      socket: BufferedSocket,
      peerName: String,
    ) = apply {
      this.socket = socket
      this.connectionName =
        when {
          client -> "$okHttpName $peerName"
          else -> "MockWebServer $peerName"
        }
    }

    fun listener(listener: Listener) =
      apply {
        this.listener = listener

  }

  private static class NamedObject {
    private final Set<String> peerNames = new HashSet<>();

    private final String name;

    NamedObject(String name) {
      this.name = Preconditions.checkNotNull(name);
    }

    @CanIgnoreReturnValue
    NamedObject addPeers(String... names) {
      peerNames.addAll(ImmutableList.copyOf(names));
      return this;
    }

    @Override