问题描述
据我了解，QUIC可以在同一UDP通道上复用多个流，包括相同的密钥交换.
If I understand, QUIC exists to multiplex multiple streams over the same UDP channel, including same key exchange.
QUIC的VoIP等传输模式也不可靠.>: //datatracker.ietf.org/doc/draft-pauly-quic-datagram/
QUIC also has an unreliable transport mode for VoIP, etc. https://datatracker.ietf.org/doc/draft-pauly-quic-datagram/
是否有人认为QUIC的文件"传输模式使用了这种不可靠模式或另一种次要"可靠性模式?文件传输比QUIC流所支持的有序交付少得多吗?
Has anyone considered a "file" transfer mode for QUIC that uses either this unreliable mode or another "less" reliable mode? Would file transfer benefit much from even less ordered delivery than a QUIC stream supports?
有一个Bittorrent变种 µTP ( BEP-29 )的存在部分是为了减少对住宅互联网的干扰，但支持bittorrent惯常的高度无序交付.
There is a bittorrent variant µTP (BEP-29) which exists partially to interfere less with residential internet, but supports bittorrent's usual highly unordered delivery.
我想通过接受来自多个发件人的数据包大小的块，QUIC的文件传输协议也可能像比特币一样，但这是另一个主题.
I suppose a file transfer protocol for QUIC could also be bittorren-like by accepting packet sized chunks from multiple senders, but that's another topic.
推荐答案
无序，不可靠的文件传输协议的一个优点是，它们不需要为保持随连接BDP增长的重发缓冲区而付出的内存成本. .这些缓冲区的大小不正确会导致高BDP链路上的大量性能损失.
One advantage of unordered, unreliable file transfer protocols is that they do not need to pay the memory cost of keeping a retransmit buffer that grows with the BDP of the connection. Incorrect sizing of those buffers can lead to significant performance losses on high-BDP links.
两端使用用于文件的随机访问持久性存储，可以在应用程序级别处理重新排序和重新传输.
The random-access persistent storage used for the files at each end allows the reordering and retransmission to be handled on the application level.
缺少行头阻塞也可能导致IO利用率略有提高.
The absence of head-of-line blocking may also lead to marginally better IO utilization.
但是这些问题都是极端情况.对于在一个大洲内批量传输单个大文件，QUIC的可靠流模式可能会在吞吐量达到最佳状态时执行.
But those issues are edge-cases. For bulk-transferring a single large file within one continent the reliable stream mode of QUIC will probably perform near the throughput optimum.
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