From owner-freebsd-net@freebsd.org Thu Jul 30 14:39:02 2015 Return-Path: Delivered-To: freebsd-net@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 5A97D9AF72A for ; Thu, 30 Jul 2015 14:39:02 +0000 (UTC) (envelope-from hoomanfazaeli@gmail.com) Received: from mail-wi0-x22f.google.com (mail-wi0-x22f.google.com [IPv6:2a00:1450:400c:c05::22f]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 068E1B64 for ; Thu, 30 Jul 2015 14:39:02 +0000 (UTC) (envelope-from hoomanfazaeli@gmail.com) Received: by wicgb10 with SMTP id gb10so247053561wic.1 for ; Thu, 30 Jul 2015 07:39:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=message-id:date:from:user-agent:mime-version:to:subject :content-type:content-transfer-encoding; bh=jRADsHpTFAO6RrjDSj9u84yPU77guFUraM2DhuNEH3s=; b=iuGSPP3nnJJwdbTPwFGUFRiEgX6OdBu64slJTVWV6gH8IE4/7Kkbms7I6pJMDI0hgK WOEQkVSba6V/xBhnR84xZNLLaJ2xSyg6gbbn4Sv6u0+wP0m3Ac4JszRjEBFboRoUWYDr APNOCswswzjde4tcIVV0LfjRtKqyxwo7i7NTyl5ixZRlH0fifldXybNFw241lUxVnqWS mSqi+XC3vgSmH2aSR/mCJbPB13Cvo5e/5ItQ1+j0v7yB+3MFsP351CU+LmAo+0YpQnRf nchXce5K0MS7bT+EkUknBu1eh7CQh8f/U/UXKcde686TZwW06bxnK0EsnbUC7VsVzHzF t27g== X-Received: by 10.194.24.196 with SMTP id w4mr87763103wjf.137.1438267140499; Thu, 30 Jul 2015 07:39:00 -0700 (PDT) Received: from [192.168.2.30] ([2.190.246.160]) by smtp.googlemail.com with ESMTPSA id v20sm2201696wjw.17.2015.07.30.07.38.58 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Thu, 30 Jul 2015 07:38:59 -0700 (PDT) Message-ID: <55BA36FF.9070405@gmail.com> Date: Thu, 30 Jul 2015 19:08:55 +0430 From: Hooman Fazaeli User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:17.0) Gecko/20130215 Thunderbird/17.0.3 MIME-Version: 1.0 To: "freebsd-net@freebsd.org" Subject: tcp window scaling (rfc1323) problem Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 30 Jul 2015 14:39:02 -0000 Hi, We connect to the Internet through a TCP proxy running on FreeBSD 8.3-RELEASE. Everything works except that instagram clients frequently fail to get/refresh some images and feeds. I have checked anything that may be the cause of problem and found that setting net.inet.tcp.rfc1323 to zero improves the situation. Googling a bit, I found out that there are reports about window scaling impl. bug in older freebsds (i.e., https://lists.freebsd.org/pipermail/freebsd-hackers/2007-January/019070.html). My question is that which version of freebsd is known to have the bug of window scaling fixed? Is there any known problem related to window scaling in newer (8+) freebsd versions? Thanks in advance. -- Best regards Hooman Fazaeli