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[146.199.85.193]) by smtp.gmail.com with ESMTPSA id b17-20020a05600c4e1100b004148090cf86sm2273317wmq.0.2024.04.03.06.44.46 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 03 Apr 2024 06:44:46 -0700 (PDT) Date: Wed, 3 Apr 2024 14:44:45 +0100 From: Sad Clouds Cc: freebsd-net@FreeBSD.org Subject: Re: TCP socket handling errors Message-Id: <20240403144445.9a5662aa66975430c73f9e6d@gmail.com> In-Reply-To: <20240403131434.c3bfa64c726505d842408c80@gmail.com> References: <20240403131434.c3bfa64c726505d842408c80@gmail.com> X-Mailer: Sylpheed 3.7.0 (GTK+ 2.24.32; x86_64-pc-linux-gnu) List-Id: Networking and TCP/IP with FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-net List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-net@freebsd.org Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Spamd-Bar: - X-Spamd-Result: default: False [-1.48 / 15.00]; MISSING_TO(2.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; NEURAL_HAM_SHORT(-0.98)[-0.982]; DMARC_POLICY_ALLOW(-0.50)[gmail.com,none]; MV_CASE(0.50)[]; R_DKIM_ALLOW(-0.20)[gmail.com:s=20230601]; R_SPF_ALLOW(-0.20)[+ip6:2a00:1450:4000::/36]; MIME_GOOD(-0.10)[text/plain]; RCVD_TLS_LAST(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; ARC_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; RCPT_COUNT_ONE(0.00)[1]; FREEMAIL_ENVFROM(0.00)[gmail.com]; FREEMAIL_FROM(0.00)[gmail.com]; FROM_HAS_DN(0.00)[]; ASN(0.00)[asn:15169, ipnet:2a00:1450::/32, country:US]; DWL_DNSWL_NONE(0.00)[gmail.com:dkim]; TO_DN_NONE(0.00)[]; RCVD_COUNT_TWO(0.00)[2]; FROM_EQ_ENVFROM(0.00)[]; DKIM_TRACE(0.00)[gmail.com:+]; PREVIOUSLY_DELIVERED(0.00)[freebsd-net@freebsd.org]; MID_RHS_MATCH_FROM(0.00)[]; MLMMJ_DEST(0.00)[freebsd-net@freebsd.org]; RCVD_VIA_SMTP_AUTH(0.00)[]; RCVD_IN_DNSWL_NONE(0.00)[2a00:1450:4864:20::22b:from] X-Rspamd-Queue-Id: 4V8mFt5f43z4Wg1 I found a bug that is still open from May 2010 and describes the same behaviour that I see with my application: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=146845 If this hasn't been fixed over the last 14 years, then I guess I will add some code to simply ignore ECONNRESET on close(2) for FreeBSD and MacOS. This seems the be the general advice from other people who hit this issue.