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Re: [quicwg/base-drafts] Packet number echo with variable-length numbering (#391)

martinduke <notifications@github.com> Tue, 28 March 2017 22:45 UTC

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Date: Tue, 28 Mar 2017 15:45:31 -0700
From: martinduke <notifications@github.com>
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Subject: Re: [quicwg/base-drafts] Packet number echo with variable-length numbering (#391)
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> it's providing a measurement only for the component of the RTT between the observation point and one endpoint.

While true, I'm not sure in practice that middlebox operators care about both sides of the path. In many cases, one side is "network I'm responsible for" and one is "the internet." In others, I might be using RTT to detect congestion and throttle egress accordingly, which implies that there's data going out.

All that said, I prefer option 3 until someone gives me an example of the echo being used maliciously.

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