"Expected 'Sec-WebSocket-Accept' header value '$acceptExpected' but was '$headerAccept'",
      )
    }

    if (exchange == null) {
      throw ProtocolException("Web Socket exchange missing: bad interceptor?")
    }
  }

  fun initReaderAndWriter(
    name: String,
    streams: Streams,
  ) {
    val extensions = this.extensions!!
    synchronized(this) {
      this.name = name