Fwd: New Version Notification for draft-kazuho-httpbis-selftrace-00.txt

Hello folks,

Today Jana and I have submitted a tiny I-D called
draft-kazuho-httpbis-selftrace.

The draft specifies a well-known URI to be used for providing a trace of a
particular HTTP/3 connection (e.g., qlog) on that same HTTP/3 connection.

One of the biggest hurdles in analyzing HTTP/3 performance issues is
obtaining traces that show the symptoms. That is because clients being
affected by issues have to coordinate with the server operators to collect
the traces.

This PR solves the problem by defining a well-known URI for serving a trace
to the client on the HTTP connection that the client is using. When a user
sees an issue, they can collect the traces themselves and provide it to the
server operator.

We have already implemented the feature in h2o, and doing so was easy,
assuming that the underlying QUIC stack already defines callbacks for
collecting trace events, see lib/handler/self_trace.c of
https://github.com/h2o/h2o/pull/2765.

We also have a public endpoint; to try it out, first open
https://ora1.kazuhooku.com/test/self-trace/video-only.html (which starts
streaming a video), then open
https://ora1.kazuhooku.com/.well-known/self-trace. While the video is being
served, you would see the trace flowing through the well-known URI.

At the moment, we are using a custom JSON format for the trace, but when
gzip compression is applied on-the-fly, the overhead of sending a trace
alongside ordinary HTTP responses is less than 10%. Therefore, we tend to
believe that this approach would work well in practice.

Please let us know what you think - your feedback is very welcome.

---------- Forwarded message ---------
From: <internet-drafts@ietf.org>
Date: 2021年8月13日(金) 14:53
Subject: New Version Notification for draft-kazuho-httpbis-selftrace-00.txt
To: Jana Iyengar <jri.ietf@gmail.com>, Kazuho Oku <kazuhooku@gmail.com>



A new version of I-D, draft-kazuho-httpbis-selftrace-00.txt
has been successfully submitted by Kazuho Oku and posted to the
IETF repository.

Name:           draft-kazuho-httpbis-selftrace
Revision:       00
Title:          Self-Tracing for HTTP
Document date:  2021-08-13
Group:          Individual Submission
Pages:          5
URL:
https://www.ietf.org/archive/id/draft-kazuho-httpbis-selftrace-00.txt
Status:
https://datatracker.ietf.org/doc/draft-kazuho-httpbis-selftrace/
Htmlized:
https://datatracker.ietf.org/doc/html/draft-kazuho-httpbis-selftrace


Abstract:
   This document registers a "Well-Known URI" for exposing state of an
   HTTP connection to the peer using formats such as qlog schema [QLOG].




The IETF Secretariat




-- 
Kazuho Oku