) {
      "state: $state"
    }

    try {
      val statusLine = StatusLine.parse(headersReader.readLine())

      val responseBuilder =
        Response.Builder()
          .protocol(statusLine.protocol)
          .code(statusLine.code)
          .message(statusLine.message)
          .headers(headersReader.readHeaders())
          .trailers { error("trailers not available") }

          varyHeadersBuilder.addLenient(source.readUtf8LineStrict())
        }
        varyHeaders = varyHeadersBuilder.build()

        val statusLine = StatusLine.parse(source.readUtf8LineStrict())
        protocol = statusLine.protocol
        code = statusLine.code
        message = statusLine.message
        val responseHeadersBuilder = Headers.Builder()
        val responseHeaderLineCount = readInt(source)