From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from NAM12-MW2-obe.outbound.protection.outlook.com (mail-mw2nam12on2133.outbound.protection.outlook.com [40.107.244.133]) by sourceware.org (Postfix) with ESMTPS id 3F5B43833012 for ; Tue, 27 Apr 2021 13:48:47 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org 3F5B43833012 Authentication-Results: sourceware.org; dmarc=pass (p=none dis=none) header.from=cornell.edu Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=kbrown@cornell.edu ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=I+RKWdIGntW0caHz2Of/M3aWvVbYU6WOAHv5FqUXLdXLaOJ4r4Go4/La8CY+a1X08IdDQ4kzcoUtpaBuvISj0bXU43+eTShaZFHW2vJYMMcFdMaD+qqNMawW/gPXl9tKTZxSqVGRdIXzP0OHBVEFynd5mupljLvQ/gmN2pkk2o9FF5Pi/T96V69FPNpdvZ06Jdo6QO/LqcgSnPFbPySB0Ia8bvhda1exhUKxj/9Me/U1RYBcsek5QMjCS6IbnIUmSt1ISs05m3nK7G3OtlAAPMv7G9X7ILmMBgKUcW7aLStkS0QVokBSIyun3YMTLcqQSAAChOgywrJhfQ3j3OVuPQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=CK75rdebOHGYgfxQXcr6eLLvtwIi4TOfK6HS247F0V0=; b=AyyC7ZqujrtTX8Nb0+wS+2D2ZBkFSSSYoA9SbLFVds8pCCznUkCSyfkJYBBpXVWEr5ePEhbd5A0vpcuwkBmzAf1XHwjIz29Vqnjkp2bO+X2QP6DDcCnbzcGyk9njN1cjItgQKKn+u8B0tl9XiYhwhEYHqiiaT7ljhLrdMYBUrqX7QBiM5uqcPqP5Hji8HQttfRYdrdIyLZspqEoh1/OKPl9rofCxMkbLc7ex1iJuD1hJTGnBFJMtYDez1zWGC1rAcxBwHipPGLeYJghvOM9mpBMlGnv9cwJQ5vscAe6ULm16LT/mmsgrV8t11TZmptC0MK6oAbiQdHdpSFKgivMR1Q== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=cornell.edu; dmarc=pass action=none header.from=cornell.edu; dkim=pass header.d=cornell.edu; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cornell.edu; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=CK75rdebOHGYgfxQXcr6eLLvtwIi4TOfK6HS247F0V0=; b=CbNqrgpBEpdASKj3I3Bby64B9HFiNbYQDBJxrkpyeISQtnAWPd0GGpZVnKXIAPPx0ymfSe7pwi/NaJmFWN8aHWiQkqSsbyjGBp82D6Ib/LNBBf9nOvkRLW/CiM7i6VGn+dcOdgTXkAShVlUJBLw79MgOHG4QvXWY7Z1KyJU4A3w= Authentication-Results: cygwin.com; dkim=none (message not signed) header.d=none;cygwin.com; dmarc=none action=none header.from=cornell.edu; Received: from BN7PR04MB4388.namprd04.prod.outlook.com (2603:10b6:406:f8::19) by BN6PR04MB0242.namprd04.prod.outlook.com (2603:10b6:404:17::11) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4065.24; Tue, 27 Apr 2021 13:48:37 +0000 Received: from BN7PR04MB4388.namprd04.prod.outlook.com ([fe80::59f8:fcc4:f07e:9a89]) by BN7PR04MB4388.namprd04.prod.outlook.com ([fe80::59f8:fcc4:f07e:9a89%4]) with mapi id 15.20.4065.027; Tue, 27 Apr 2021 13:48:37 +0000 Subject: Re: [PATCH] Cygwin: connect: implement resetting a connected DGRAM socket To: cygwin-patches@cygwin.com References: <20210426193701.19895-1-kbrown@cornell.edu> From: Ken Brown Message-ID: Date: Tue, 27 Apr 2021 09:48:36 -0400 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.10.0 In-Reply-To: Content-Type: text/plain; charset=windows-1252; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Originating-IP: [65.112.130.200] X-ClientProxiedBy: BL1PR13CA0435.namprd13.prod.outlook.com (2603:10b6:208:2c3::20) To BN7PR04MB4388.namprd04.prod.outlook.com (2603:10b6:406:f8::19) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from [10.13.22.8] (65.112.130.200) by BL1PR13CA0435.namprd13.prod.outlook.com (2603:10b6:208:2c3::20) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4087.16 via Frontend Transport; Tue, 27 Apr 2021 13:48:37 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 9e7a873a-38fb-4a9d-ad4e-08d909832878 X-MS-TrafficTypeDiagnostic: BN6PR04MB0242: X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:5516; X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255; CTRY:; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:BN7PR04MB4388.namprd04.prod.outlook.com; PTR:; CAT:NONE; SFS:(4636009)(39860400002)(396003)(376002)(136003)(366004)(346002)(66556008)(36756003)(66476007)(186003)(16526019)(75432002)(66946007)(31686004)(8936002)(316002)(2616005)(478600001)(956004)(52116002)(16576012)(8676002)(786003)(31696002)(5660300002)(86362001)(2906002)(6916009)(83380400001)(53546011)(38100700002)(38350700002)(6486002)(26005)(45980500001)(43740500002); DIR:OUT; SFP:1102; X-MS-Exchange-AntiSpam-MessageData: =?Windows-1252?Q?UhEUSn9f192AbQ2wOcq5/JnXffWdO4SCf9ugjWzjSEmFfu6MhWgN/FRy?= =?Windows-1252?Q?CBgKlGgjdNQ7WMh9xrzSFuLrFKekINcYXvJK56Vdjbxzl3JkKtL6reWO?= =?Windows-1252?Q?2aLl3oJuHsrAAAZVvxG9fwUej4Qoj+i/8hC/UaMVd/QKP2YP/sKHaLwN?= =?Windows-1252?Q?26K0qHO0AQW9nSuh1DS9+VR6S7mv+0V7eYrYFHqEggzoRrY6iXwdo5th?= =?Windows-1252?Q?PO9pHtzFAS67q1yCCYEISv7ZbYCSf+WSVJYClAMs1Zf+j5d8j5r0sBff?= =?Windows-1252?Q?s7eFBrvr2y3Imd/InrMUMsUzW3m+iTWGW48S9DLWdBrGcIgH2QRGfZzF?= =?Windows-1252?Q?Zk6zlIgF/XXJIS8ertldc35cdCAvFE3PQX6DIpaTy5UNsuM6S8PsRa8n?= =?Windows-1252?Q?RJ5zNdfDrWjC21WFDxybr8U/SC2AOuNQSsXj+MLQ1rpdM3DLChEWQztM?= =?Windows-1252?Q?0hO8tf7sTvkZ1q8z4YoErX1jDA9/DJodGAJl0mCb6LNKu98qnBNt00Do?= =?Windows-1252?Q?wpXvtgR7J3sRp2bV0KDTyvKWesr/eckv0fWWQ+iPMJIP1DGM44BwJjtP?= =?Windows-1252?Q?UTtRDtolpcnang8w2X7YUdo8n9YIF4S/74VC3QJNROVIQ7tU1lic137A?= =?Windows-1252?Q?IeLcqZQM5elpTFJej5fmDfCkesWjZiXdDvEzyELBAtIdq1Tal74CfN/m?= =?Windows-1252?Q?yH/jE7fBqfNZ3IsFk6zSDuBkDQxpH3kpPe93QEBDEB531g8jGMTmcEfP?= =?Windows-1252?Q?nlUwQz89oIBfAt5EpoIqxztgvfGWrLnt2QTfre0vwVel9vm3yQ+iI1mY?= =?Windows-1252?Q?WFVtipIx/5pUiylzSwtvZu0FRlWryCuYww+rSnuL12JM/zYFI7Fvn9Hz?= =?Windows-1252?Q?WnpPUYr7E8Oczype2FDJn8yYz3uNVAJrqbvwpSe7G8y6ZzRLAuyHo29/?= =?Windows-1252?Q?uSL6ZO7wPTOQuUu0FZ5KZfN7brySL8KfTg6E98EDHGoon3uWRG8wL9Q9?= =?Windows-1252?Q?8wC8XbhIAIS9JXZQ+ONV1iLIBvYqL6uWx1oWw8IscTPoyrSKNwOvKmuJ?= =?Windows-1252?Q?CsmCoBSvdGSbAQchXgxo1SjZcjmR/3D1/jwPIk+LxEbMilm9tTRB8sux?= =?Windows-1252?Q?0L7V+Mi5h/KxAf33+3CDV/LpUMwp/O9HqUHZcG7F+4wNeAghsUuTI4r8?= =?Windows-1252?Q?ZZ32be6ABY7KcPR+a4slOJjoaFawqZquvBpiGfiY3bHNo3PMt829w7TZ?= =?Windows-1252?Q?Iw7QeuyG9eYbNqzpN00Uobo/y+Z2m4R6eH58Tv5NpJ6D+s5lhnt5sV5p?= =?Windows-1252?Q?eygRNJyQlnIC+cVP+R9KGEjLYhreu//dEQwd7s6iXUIy734AYPsUEofc?= =?Windows-1252?Q?8RoYuErdJlDtblhCn25Enqg+mVjI6OWydbk6NRY4M5UPb0SKPppssUIm?= X-OriginatorOrg: cornell.edu X-MS-Exchange-CrossTenant-Network-Message-Id: 9e7a873a-38fb-4a9d-ad4e-08d909832878 X-MS-Exchange-CrossTenant-AuthSource: BN7PR04MB4388.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 27 Apr 2021 13:48:37.7237 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 5d7e4366-1b9b-45cf-8e79-b14b27df46e1 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: u935Xpzr7BOTJKcltXiYYBI+qaxd9OgtcM+a9sT/hdahG+hmnIJTouaXvh54mOs2ZzN1FnwKzBwJ8wnVPIzx+w== X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN6PR04MB0242 X-Spam-Status: No, score=-3.6 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, MSGID_FROM_MTA_HEADER, NICE_REPLY_A, RCVD_IN_DNSWL_NONE, RCVD_IN_MSPIKE_H2, SPF_HELO_PASS, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on server2.sourceware.org X-BeenThere: cygwin-patches@cygwin.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: Cygwin core component patch submission and discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 27 Apr 2021 13:48:49 -0000 On 4/27/2021 9:19 AM, Corinna Vinschen wrote: > On Apr 26 15:37, Ken Brown wrote: >> Following POSIX and Linux, allow a connected DGRAM socket's connection >> to be reset (so that the socket becomes unconnected). This is done by >> calling connect and specifing an address whose family is AF_UNSPEC. >> --- >> winsup/cygwin/fhandler_socket_inet.cc | 21 ++++++++++++++++-- >> winsup/cygwin/fhandler_socket_local.cc | 30 +++++++++++++++++++++----- >> winsup/cygwin/fhandler_socket_unix.cc | 7 ++++++ >> winsup/cygwin/release/3.2.1 | 3 +++ >> winsup/doc/new-features.xml | 6 ++++++ >> 5 files changed, 60 insertions(+), 7 deletions(-) > > LGTM. > >> --- a/winsup/cygwin/release/3.2.1 >> +++ b/winsup/cygwin/release/3.2.1 >> @@ -1,6 +1,9 @@ >> What's new: >> ----------- >> >> +- A connected datagram socket can now have its connection reset. As >> + specified by POSIX and Linux, this is done by calling connect(2) >> + with an address structure whose family is AF_UNSPEC. > > Isn't that just a bug, in theory? I was thinking of it as a feature that hadn't been implemented yet. But on second thought, I agree with you. I'll change that. Ken