DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 758BF3857813
Subject: Re: AF_UNIX/SOCK_DGRAM is dropping messages
To: sten.kristian.ivarsson@gmail.com, cygwin@cygwin.com
References: <04cc01d71ffa$7d1e6cf0$775b46d0$@gmail.com>
 <YFo/fFC2bITvnVGr@xps13> <00d901d7208e$97c05c50$c74114f0$@gmail.com>
 <860668bf-8cf9-0969-6a01-7fbf8b782db1@cornell.edu>
 <000901d72607$55dc5a90$01950fb0$@gmail.com>
 <3346cd1c-b93f-83c4-ff26-553ac95ec692@cornell.edu>
 <7c21a430-9609-7fd4-1a02-8b7c1978d2f8@cornell.edu>
 <001901d72af4$4009cd50$c01d67f0$@gmail.com>
 <134074c1-4c0b-0842-b88b-536a1ed4aefe@cornell.edu>
 <000e01d7306e$3c265580$b4730080$@gmail.com>
 <19cf8626-c653-76db-a409-730a5aa5c955@cornell.edu>
 <4380cdea-c95b-d9dc-50e3-e5adabb73b92@cornell.edu>
 <000701d73151$9c259660$d470c320$@gmail.com>
 <2e64e918-b28b-753e-8337-c757cc62b9bb@cornell.edu>
 <000001d731f9$58e417c0$0aac4740$@gmail.com>
 <65921e52-af84-3d2f-fd01-28e5c7866a73@cornell.edu>
 <68a8835a-0992-296c-bf4b-28be0ff34818@cornell.edu>
 <003d01d73bfe$416c7d80$c4457880$@gmail.com>
 <009d01d78f79$68d010c0$3a703240$@gmail.com>
Message-ID: <0aa45506-662b-eb06-39ae-4adb4b30050f@cornell.edu>
Date: Fri, 13 Aug 2021 07:19:24 -0400
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101
 Thunderbird/78.12.0
In-Reply-To: <009d01d78f79$68d010c0$3a703240$@gmail.com>
Content-Language: en-US
MIME-Version: 1.0
X-MS-Exchange-MessageSentRepresentingType: 1
Received: from [IPv6:2603:7081:7e3f:3419:5c9d:dfcd:3de7:e504]
 (2603:7081:7e3f:3419:5c9d:dfcd:3de7:e504) by
 CH2PR17CA0024.namprd17.prod.outlook.com (2603:10b6:610:53::34) with Microsoft
 SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id
 15.20.4415.14 via Frontend Transport; Fri, 13 Aug 2021 11:19:26 +0000
X-MS-PublicTrafficType: Email
X-MS-Office365-Filtering-Correlation-Id: 758cc7dc-ce9b-4908-5305-08d95e4c3650
X-MS-TrafficTypeDiagnostic: BN8PR04MB6353:
X-Microsoft-Antispam-PRVS: <BN8PR04MB63532C96E52A338B07A1D6E0D8FA9@BN8PR04MB6353.namprd04.prod.outlook.com>
X-MS-Oob-TLC-OOBClassifiers: OLM:7219;
X-MS-Exchange-SenderADCheck: 1
X-MS-Exchange-AntiSpam-Relay: 0
X-Microsoft-Antispam: BCL:0;
X-Microsoft-Antispam-Message-Info: qCaiDPMxtno+wcQs5qkk+U0pzop2mySzI8sHJ/mLRJ+NaJ8xkF0MkNwB67it+umnAYJbpQR+588Qi3uLwdo8yVLkNj/mo867j/Mur2K1ePbxCqMxy1pxMYRPc0p1e9hgmDb28NBFzimQJTzQYGGTs+ytlggZIPK0PQtjYGLbTTPDPwNYhluyozqimem8zdOCtIs1sc24q+qFDV/Cavty8txMHXaw7IrfsPcWQt2wJYtP1D822b+PzBRr2SwtJO3LevW7owh2+vifjfbUnjAOoEsU0Vj5CGQrF6Fk6vEvezQ7dM50DgT8b1CqGVYxUz+yWVJsoGdzipL71dP1+6ZQ1dg25ASVjCKNY18U64/msUG0flfAYZMCvDwPLMgsW5/JEDHE4hVIGsFrgGCscvPtS158tqzrfkYVApNr03DXBajFzCAov9kbWgab1arhZUpVOuOCDuukYhvcvgPtf8jGqIcSrrPXnZRDFNL2X2huLp/BsgQBvqfUw+Ro3d437kAYkjE9WHy9PDOG90pZh4Bk7M7ufvWRLJGgkiXCEe7n+Xen9laKJWqQ4d2AhzTvT/a296sFa8yEArirtikoWhGI8osDC+iSF8caHQDEy4vwVb1x8mNzqtMREhUMDArzl/iG4aSPsp7WmEP+MzzdstZHA8XBZP7soPxXtdhleY/2QkAHxi29hQcHZBItqkQ3D2t0LT3+lTsjCYWIti35E+z6ZW8a6I6dkVYu5TybWcJ9TTQ=
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)(366004)(31686004)(5660300002)(316002)(786003)(508600001)(83380400001)(53546011)(66556008)(66476007)(66946007)(2616005)(4744005)(38100700002)(8936002)(86362001)(75432002)(15650500001)(8676002)(6486002)(186003)(2906002)(31696002)(36756003)(45980500001)(43740500002);
 DIR:OUT; SFP:1102; 
X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1
X-MS-Exchange-AntiSpam-MessageData-0: =?Windows-1252?Q?+m/MFZcgWKxhX3+qG6D8LtX/qJzp6fYlItgKKRekjnEhRntUqsAqGw1A?=
 =?Windows-1252?Q?nPHyRP4G0HW2uZ7YvsdcTte2e4vNBUQLHhijeQ+tdO3/lGulza219xyU?=
 =?Windows-1252?Q?up8N7kedrZh6IyL1LslvSSSmWm1V8yKq6+jAJhSPUX6O/8l2B46wz6LB?=
 =?Windows-1252?Q?GrFLOjZMdR7QpvoXzIGiKxxmMTJqsmY2TpKKDzs/jPYNh55vPHA9xlNN?=
 =?Windows-1252?Q?yHKSSi4MlJFjsEWv45HQrHFSsw58bCOiKg0ZvPATEzYq24VTMlsJS5oU?=
 =?Windows-1252?Q?Y+9Ge1syJiu2YUo1Il3g8rlY2UPJyvBX6PSlkvobwaCKzNjBx0VrVOgI?=
 =?Windows-1252?Q?ZonfHjqK0fWoStKRHy/ojZ3xdc3pGOcXrPte/PwSvCuxz2x1RH/LH9y6?=
 =?Windows-1252?Q?CI7EeyV5atKApzWGWxW1yJQ8eth7GgnOK7dCTqvW+/Z0uKJJFzm7rJZL?=
 =?Windows-1252?Q?YAx+M4jzH2ii+NkbELW5EAtIMJSLHCIAntxmsZq2zf4xku7mow8ADUXK?=
 =?Windows-1252?Q?LB+ToGOxpSwgV+fGh/Gq5ZXleL80Sk4meglIiYPHrXcOewZe1IN8T0+7?=
 =?Windows-1252?Q?YJJUshSgIdM2aqthdVaZE3yiIAIIsc3JSFM+EDY9dorjb+XMpchwV8ZA?=
 =?Windows-1252?Q?SFOaqvUmNORDUgXkB91ZGQtB9ELBlyAxrOrNNGihfHNs1Mb8cUQhKDSA?=
 =?Windows-1252?Q?p2NhVWf6ei9o5kI2/O03tWdMFKyogSZcpGi/ojS+ron6QY9M63qDVD6q?=
 =?Windows-1252?Q?tMpbzrg48Lz8EWXOhw/tnCPlEoo4d+59w6C4pRUYXmbRIEl+5TtxnkiK?=
 =?Windows-1252?Q?W1rH+d3eSL4SJRAvS9brjrNpVSK9TmdH9miFK45biIKLw+b53X/gS+3d?=
 =?Windows-1252?Q?ibzeTNIUlcYxKS/zE7SNq43lrJ3moHFlgzldCkUudse9dJ8UHYszKndw?=
 =?Windows-1252?Q?uH2GMoN+XTErSSbBzV/BBa/R8IcMl63xhCfJQJajRDjOBFvP5C5Uolzu?=
 =?Windows-1252?Q?6h48RUH41sNvLkY31kzFwKljNooxCPDOB3XjHaMfj2jPHv2YwBpGR+/B?=
 =?Windows-1252?Q?G+ckWEYuB9CrE4aDIE8wxTyqejzMqxMsC0l/BZNLb56kcnJnXsvHXJlB?=
 =?Windows-1252?Q?vUh5FOtnXX9p4/w3TlIwohrYtCWbJW/tMEwv7TB259Ob0LAt5HNrs8lx?=
 =?Windows-1252?Q?62IMUDg2s+dQb1fhUlXIp9sQTqGDMAvqucRLyN0+Ny/SO6a0OzKfBoHO?=
 =?Windows-1252?Q?s4+igc0uOxsJdgE20Dy/VXN6NTlcV6P8OoFkRALzetKm88nYjumOT/9z?=
 =?Windows-1252?Q?qJwvt4wcG67fo0eMjPkg8h9zKXwCrH8+wKNx3YqH80GUheoMiuAf0sXK?=
 =?Windows-1252?Q?Ako230siunye1mP4GlGCm+GY2Etq/X3/BS4a1JBDXPyGLE9kFLG00xln?=
 =?Windows-1252?Q?P3vDqPVraNi6yc4JRCgw7mQq6ZSqu0eEvAY9rRTvk1a6AsPf7RbMovud?=
 =?Windows-1252?Q?KcBOMzx5?=
X-OriginatorOrg: cornell.edu
X-MS-Exchange-CrossTenant-Network-Message-Id: 758cc7dc-ce9b-4908-5305-08d95e4c3650
X-MS-Exchange-CrossTenant-AuthSource: BN7PR04MB4388.namprd04.prod.outlook.com
X-MS-Exchange-CrossTenant-AuthAs: Internal
X-MS-Exchange-CrossTenant-OriginalArrivalTime: 13 Aug 2021 11:19:27.2624 (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: ebHzzcf/awNnGSHyHsma3VrmJbUns0Obrre72Xmkdo4PzSUAdYIgZR8sgWTXAJZCaAuSXu11Uzv3FxeUK9Eo+g==
X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN8PR04MB6353
X-Spam-Status: No, score=-3.1 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=3.4.4
X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on
 server2.sourceware.org
X-BeenThere: cygwin@cygwin.com
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: General Cygwin discussions and problem reports <cygwin.cygwin.com>
List-Unsubscribe: <https://cygwin.com/mailman/options/cygwin>,
 <mailto:cygwin-request@cygwin.com?subject=unsubscribe>
List-Archive: <https://cygwin.com/pipermail/cygwin/>
List-Post: <mailto:cygwin@cygwin.com>
List-Help: <mailto:cygwin-request@cygwin.com?subject=help>
List-Subscribe: <https://cygwin.com/mailman/listinfo/cygwin>,
 <mailto:cygwin-request@cygwin.com?subject=subscribe>
From: Ken Brown via Cygwin <cygwin@cygwin.com>
Reply-To: Ken Brown <kbrown@cornell.edu>
Content-Transfer-Encoding: 7bit
Content-Type: text/plain; charset="us-ascii"; Format="flowed"
Errors-To: cygwin-bounces+archive-cygwin=delorie.com@cygwin.com
Sender: "Cygwin" <cygwin-bounces+archive-cygwin=delorie.com@cygwin.com>

On 8/12/2021 8:56 AM, sten.kristian.ivarsson@gmail.com wrote:
> [snip]
> 
>>> I'm going to follow up on cygwin-developers.
>>
>> Great, I'll read about it there
> 
> Does anyone know anything about the progress of this issue ?

I'm afraid there has not been any progress.  We weren't able to find a solution 
using the existing AF_UNIX implementation.

The proposed implementation based on Windows named pipes (topic/af_unix branch) 
stalled because of an issue you reported, which I referred to as a performance 
problem.  But it's a pretty severe performance problem.

An alternative proposed by Mark Geisert based on Posix message queues 
(topic/af_unix_mq branch) also has issues, which may or may not be surmountable.

Sorry I don't have better news.

Ken

-- 
Problem reports:      https://cygwin.com/problems.html
FAQ:                  https://cygwin.com/faq/
Documentation:        https://cygwin.com/docs.html
Unsubscribe info:     https://cygwin.com/ml/#unsubscribe-simple