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)