Return-Path: X-Original-To: quic-issues@ietfa.amsl.com Delivered-To: quic-issues@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 998023A09BB for ; Fri, 27 Mar 2020 07:45:35 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.008 X-Spam-Level: X-Spam-Status: No, score=-2.008 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, HTML_IMAGE_ONLY_16=1.092, HTML_MESSAGE=0.001, MAILING_LIST_MULTI=-1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=github.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 4f7e1d658nBb for ; Fri, 27 Mar 2020 07:45:31 -0700 (PDT) Received: from out-5.smtp.github.com (out-5.smtp.github.com [192.30.252.196]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 3246E3A0041 for ; Fri, 27 Mar 2020 07:45:31 -0700 (PDT) Received: from github-lowworker-3a0df0f.ac4-iad.github.net (github-lowworker-3a0df0f.ac4-iad.github.net [10.52.25.92]) by smtp.github.com (Postfix) with ESMTP id 06E0E9604A8 for ; Fri, 27 Mar 2020 07:45:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=github.com; s=pf2014; t=1585320330; bh=GV8Cl6bfuD1Nvozc3BdV0xih4Z1yZM0M6Wl6b10nEnM=; h=Date:From:Reply-To:To:Cc:In-Reply-To:References:Subject:List-ID: List-Archive:List-Post:List-Unsubscribe:From; b=DJiRRthw8JaLsZuU5ua+E+p/6cIfNIX4qAdF4mFCmTMQ8dbf7a6yb5INR5SnUAO1F 2/A6Lih6TIKbOGhzsT0wglZJb20po4gZHBDQZ5XlVt7CE1OwhmmvUtnNz5r8sSYwqt j6cFWLmi+PDNyjl96uAOfSyHuAZck0J/g3+DhcoQ= Date: Fri, 27 Mar 2020 07:45:29 -0700 From: ianswett Reply-To: quicwg/base-drafts To: quicwg/base-drafts Cc: Subscribed Message-ID: In-Reply-To: References: Subject: Re: [quicwg/base-drafts] PTO probes are sent too frequently (#3546) Mime-Version: 1.0 Content-Type: multipart/alternative; boundary="--==_mimepart_5e7e1189ec36b_4fa13fbffa4cd96c109051"; charset=UTF-8 Content-Transfer-Encoding: 7bit Precedence: list X-GitHub-Sender: ianswett X-GitHub-Recipient: quic-issues X-GitHub-Reason: subscribed X-Auto-Response-Suppress: All X-GitHub-Recipient-Address: quic-issues@ietf.org Archived-At: X-BeenThere: quic-issues@ietf.org 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: Fri, 27 Mar 2020 14:45:36 -0000 ----==_mimepart_5e7e1189ec36b_4fa13fbffa4cd96c109051 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit We only reset pto_count upon receiving an Initial ACK, not any Initial packet, but I think your suggestion could work well. It amounts to continuing with exponential backoff until the client has Handshake keys. It's fairly simple to implement, and I wouldn't expect it to cause a noticeable regression, so unless someone comes up with something better, let's do it. -- You are receiving this because you are subscribed to this thread. Reply to this email directly or view it on GitHub: https://github.com/quicwg/base-drafts/issues/3546#issuecomment-605039296 ----==_mimepart_5e7e1189ec36b_4fa13fbffa4cd96c109051 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: 7bit

We only reset pto_count upon receiving an Initial ACK, not any Initial packet, but I think your suggestion could work well. It amounts to continuing with exponential backoff until the client has Handshake keys.

It's fairly simple to implement, and I wouldn't expect it to cause a noticeable regression, so unless someone comes up with something better, let's do it.

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