Re: [quicwg/base-drafts] [qpack] Add comment explaining static table (#3576)

Mike Bishop <> Wed, 15 April 2020 18:32 UTC

Return-Path: <>
Received: from localhost (localhost []) by (Postfix) with ESMTP id 1A6A13A0F24 for <>; Wed, 15 Apr 2020 11:32:49 -0700 (PDT)
X-Virus-Scanned: amavisd-new at
X-Spam-Flag: NO
X-Spam-Score: -1.721
X-Spam-Status: No, score=-1.721 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.168, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, HTML_IMAGE_ONLY_20=1.546, HTML_MESSAGE=0.001, MAILING_LIST_MULTI=-1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001] autolearn=ham autolearn_force=no
Authentication-Results: (amavisd-new); dkim=pass (1024-bit key)
Received: from ([]) by localhost ( []) (amavisd-new, port 10024) with ESMTP id cSZlmiqq-pH9 for <>; Wed, 15 Apr 2020 11:32:46 -0700 (PDT)
Received: from ( []) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by (Postfix) with ESMTPS id C49F93A0863 for <>; Wed, 15 Apr 2020 11:32:46 -0700 (PDT)
Received: from ( []) by (Postfix) with ESMTP id 201D06A11D5 for <>; Wed, 15 Apr 2020 11:32:46 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;; s=pf2014; t=1586975566; bh=Dwivakni4E5nsKrywUs2V6NUyqjCwZBc2gzjswZcPSM=; h=Date:From:Reply-To:To:Cc:In-Reply-To:References:Subject:List-ID: List-Archive:List-Post:List-Unsubscribe:From; b=RIcqp2Vk6UHT0qKI9w+AuGsWgNSwCoAvWsHSwg9vG5XyoWn/9SgqNxtzsrnnaHyu2 WlBseAds9T0lrqnPOUCMgVwhMoQ5HndtaswVfwIUhx37Fl0EY3s94gMVZCXQwDwO85 r0NiNoqs0d1h07PfcgmqR5B7E/6pfrqnOxcV5Xks=
Date: Wed, 15 Apr 2020 11:32:46 -0700
From: Mike Bishop <>
Reply-To: quicwg/base-drafts <>
To: quicwg/base-drafts <>
Cc: Subscribed <>
Message-ID: <quicwg/base-drafts/pull/3576/review/>
In-Reply-To: <quicwg/base-drafts/pull/>
References: <quicwg/base-drafts/pull/>
Subject: Re: [quicwg/base-drafts] [qpack] Add comment explaining static table (#3576)
Mime-Version: 1.0
Content-Type: multipart/alternative; boundary="--==_mimepart_5e97534e10ad4_3e1f3f8d918cd9681246e3"; charset="UTF-8"
Content-Transfer-Encoding: 7bit
Precedence: list
X-GitHub-Sender: MikeBishop
X-GitHub-Recipient: quic-issues
X-GitHub-Reason: subscribed
X-Auto-Response-Suppress: All
Archived-At: <>
X-Mailman-Version: 2.1.29
List-Id: Notification list for GitHub issues related to the QUIC WG <>
List-Unsubscribe: <>, <>
List-Archive: <>
List-Post: <>
List-Help: <>
List-Subscribe: <>, <>
X-List-Received-Date: Wed, 15 Apr 2020 18:32:49 -0000

@MikeBishop commented on this pull request.

> @@ -1199,6 +1199,12 @@ are registered in the "HTTP/3 Error Code" registry established in {{HTTP3}}.
 # Static Table
+This table was generated by analyzing actual internet traffic in 2018 and
+manually crafting the table for optimal compression of common headers.  Due to

We started from an automated query for data, then:

- Removed vendor-specific artifacts and anti-patterns as best we could
- Sorted the entries into the three tranches described in the comment; the sizes are dictated by the QPACK instruction space, but the selection of which things go in each tranche is a mix of data and judgement.

You are receiving this because you are subscribed to this thread.
Reply to this email directly or view it on GitHub: