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Consider a different fallback behavior for QUIC-only endpoints #73

bemasc opened this issue Nov 6, 2019 · 0 comments


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@bemasc bemasc commented Nov 6, 2019

Currently, if a server publishes a QUIC-only HTTPSSVC RRSet with ESNI, there is no way for a client to fall back to a non-QUIC connection, because doing so would reveal the SNI. This could increase the likelihood of partial outages for server admins who haven't considered the small fraction of users whose network path does not support QUIC.

Reviewers have reported concerns that this creates an undesirable level of fragility. We should consider whether there is an alternative design that would be less likely to result in accidental breakage.

@bemasc bemasc added the wg label Nov 8, 2019
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