Re: spin bit in QUIC: troubleshooting

[Ian Swett <[e-mail]>]

What would the other bit or two be used for?  If there is no standardized
use of those bits in v1, then I believe we should wait to reserve them when
their usage is defined, given we'd need a version bump to specify how they
were being used.  At the moment, the management use case is not competing
with anyone else for bits in the short header.

On Tue, Nov 14, 2017 at 5:14 AM, <[e-mail]> wrote:

> Hi
>
>
>
> Last week Orange experienced a fallback of QUIC to TCP on one of its
> networks. The issues were not visible in QUIC traffic. The troubleshooting
> was made using TCP packets information. This is not sustainable on the long
> term when numerous applications using different versions of QUIC will stop
> to fallback to TCP.
>
>
>
> Based on the exchange we had in the RTT design team and in today meeting ,
> it sounds reasonable to reserve at least 2 bits (ideally 3 bits as
> discussed in the design team) for manageability in the QUIC invariants and
> to start experimenting the spin bit in QUIC V1.
>
>
>
> Regards
>
> Emile
>
>
>
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