Your message dated Tue, 20 May 2025 21:12:55 +0200 with message-id <e5995e5a-3863-49d0-bb35-603d330e5...@wp.pl> and subject line Re: Bug#869859: Please set Acquire::Retries default to >0 has caused the Debian Bug report #869859, regarding Please set Acquire::Retries default to >0 to be marked as done.
This means that you claim that the problem has been dealt with. If this is not the case it is now your responsibility to reopen the Bug report if necessary, and/or fix the problem forthwith. (NB: If you are a system administrator and have no idea what this message is talking about, this may indicate a serious mail system misconfiguration somewhere. Please contact ow...@bugs.debian.org immediately.) -- 869859: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=869859 Debian Bug Tracking System Contact ow...@bugs.debian.org with problems
--- Begin Message ---Source: apt Severity: wishlist Occasionally, networks (such as the internet) are unreliable. I have observed many transient network failures, be it between my machines and the Debian mirror network, or be it in the CDNs behind deb.debian.org. This causes pain in many different scenarios; I’d like to provide just two recent examples: • Scheduled software updates (think a cron job at night time) are delayed unnecessarily because the update fails due to a transient network hickup which isn’t retried. • Continuous integration builds on platforms such as travis-ci.org fail due to transient network hickups, confusing users and making them click the retry button for the entire build, wasting time and resources. AFAICT, apt currently never retries HTTP requests by default: % grep -r Acquire::Retries apt-1.5\~beta1 apt-1.5~beta1/apt-pkg/acquire-item.h: * Set from Acquire::Retries. apt-1.5~beta1/apt-pkg/acquire-item.h: * Acquire::Retries. apt-1.5~beta1/apt-pkg/acquire-item.cc: Retries = _config->FindI("Acquire::Retries",0); apt-1.5~beta1/apt-pkg/acquire-item.cc: Retries = _config->FindI("Acquire::Retries",0); We should increase the default value of 0 to, say, 3. Thanks for considering, -- Package-specific info: -- (no /etc/apt/preferences present) -- -- (no /etc/apt/preferences.d/* present) -- -- (/etc/apt/sources.list present, but not submitted) -- -- (/etc/apt/sources.list.d/bazel.list present, but not submitted) -- -- (/etc/apt/sources.list.d/cc65.list present, but not submitted) -- -- (/etc/apt/sources.list.d/google-chrome.list present, but not submitted) -- -- (/etc/apt/sources.list.d/keybase.list present, but not submitted) -- -- System Information: Debian Release: buster/sid APT prefers testing APT policy: (990, 'testing'), (500, 'unstable-debug'), (500, 'testing-debug'), (500, 'unstable') Architecture: amd64 (x86_64) Foreign Architectures: i386, armel, mipsel, arm64 Kernel: Linux 4.9.0-3-amd64 (SMP w/8 CPU cores) Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8), LANGUAGE=de_DE.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) -- no debconf information
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--- Begin Message ---Version: 2.3.2 Hi!AFAICT, apt currently never retries HTTP requests by default: % grep -r Acquire::Retries apt-1.5\~beta1 apt-1.5~beta1/apt-pkg/acquire-item.h: * Set from Acquire::Retries. apt-1.5~beta1/apt-pkg/acquire-item.h: * Acquire::Retries. apt-1.5~beta1/apt-pkg/acquire-item.cc: Retries = _config->FindI("Acquire::Retries",0); apt-1.5~beta1/apt-pkg/acquire-item.cc: Retries = _config->FindI("Acquire::Retries",0); We should increase the default value of 0 to, say, 3.This request appears to be implemented in https://salsa.debian.org/apt-team/apt/-/commit/10631550f1. See also https://bugs.launchpad.net/ubuntu/+source/apt/+bug/1876035 Testing procedure: A. Configure a repo server The server is a Debian machine in the same network in which apt client will be running. The machine won't be responding to TCP SYN sent to TCP port 80 (default http port) due to this line in iptables: iptables -I INPUT -p tcp --destination-port 80 -j DROP Server's IP is 10.0.0.237. B. Prepare Debian bookorm machine on which apt will be executed. acerion@debian:~$ grep CODENAME /etc/os-release VERSION_CODENAME=bookworm acerion@debian:~$ cat /etc/apt/sources.list deb [trusted=yes] http://10.0.0.237/12 ./ acerion@debian:~$ acerion@debian:~$ C. Reproduction with apt before fix (compiled from 9d95c64be8 + compilation fix from 4dd5e241af). acerion@debian:~$ apt --version apt 2.3.1 (amd64) acerion@debian:~$ acerion@debian:~$ acerion@debian:~$ sudo apt-get update Err:1 http://10.0.0.237/12 ./ InRelease Could not connect to 10.0.0.237:80 (10.0.0.237), connection timed out Reading package lists... Done W: Failed to fetch http://10.0.0.237/12/./InRelease Could not connect to 10.0.0.237:80 (10.0.0.237), connection timed out W: Some index files failed to download. They have been ignored, or old ones used instead. acerion@debian:~$ acerion@debian:~$ acerion@debian:~$ sudo apt-get -o "Acquire::Retries=1" update Ign:1 http://10.0.0.237/12 ./ InRelease Err:1 http://10.0.0.237/12 ./ InRelease Could not connect to 10.0.0.237:80 (10.0.0.237), connection timed out Reading package lists... Done W: Failed to fetch http://10.0.0.237/12/./InRelease Could not connect to 10.0.0.237:80 (10.0.0.237), connection timed out W: Some index files failed to download. They have been ignored, or old ones used instead. acerion@debian:~$ acerion@debian:~$ acerion@debian:~$ sudo apt-get -o "Acquire::Retries=3" update Ign:1 http://10.0.0.237/12 ./ InRelease Ign:1 http://10.0.0.237/12 ./ InRelease Ign:1 http://10.0.0.237/12 ./ InRelease Err:1 http://10.0.0.237/12 ./ InRelease Could not connect to 10.0.0.237:80 (10.0.0.237), connection timed out Reading package lists... Done W: Failed to fetch http://10.0.0.237/12/./InRelease Could not connect to 10.0.0.237:80 (10.0.0.237), connection timed out W: Some index files failed to download. They have been ignored, or old ones used instead. D. Reproduction with apt after fix (compiled from 10631550f1 + compilation fix from 4dd5e241af). acerion@debian:~$ sudo apt-get update Ign:1 http://10.0.0.237/12 ./ InRelease Ign:1 http://10.0.0.237/12 ./ InRelease Ign:1 http://10.0.0.237/12 ./ InRelease Err:1 http://10.0.0.237/12 ./ InRelease Could not connect to 10.0.0.237:80 (10.0.0.237), connection timed out Reading package lists... Done W: Failed to fetch http://10.0.0.237/12/./InRelease Could not connect to 10.0.0.237:80 (10.0.0.237), connection timed out W: Some index files failed to download. They have been ignored, or old ones used instead. acerion@debian:~$ acerion@debian:~$ acerion@debian:~$ sudo apt-get -o "Acquire::Retries=1" update Ign:1 http://10.0.0.237/12 ./ InRelease Err:1 http://10.0.0.237/12 ./ InRelease Could not connect to 10.0.0.237:80 (10.0.0.237), connection timed out Reading package lists... Done W: Failed to fetch http://10.0.0.237/12/./InRelease Could not connect to 10.0.0.237:80 (10.0.0.237), connection timed out W: Some index files failed to download. They have been ignored, or old ones used instead. acerion@debian:~$ acerion@debian:~$ acerion@debian:~$ sudo apt-get -o "Acquire::Retries=4" update Ign:1 http://10.0.0.237/12 ./ InRelease Ign:1 http://10.0.0.237/12 ./ InRelease Ign:1 http://10.0.0.237/12 ./ InRelease Ign:1 http://10.0.0.237/12 ./ InRelease Err:1 http://10.0.0.237/12 ./ InRelease Could not connect to 10.0.0.237:80 (10.0.0.237), connection timed out Reading package lists... Done W: Failed to fetch http://10.0.0.237/12/./InRelease Could not connect to 10.0.0.237:80 (10.0.0.237), connection timed out W: Some index files failed to download. They have been ignored, or old ones used instead. acerion@debian:~$ E. Reproduction with apt 3.0.1 from sid/trixie acerion@debian:~$ grep CODENAME /etc/os-release VERSION_CODENAME=trixie acerion@debian:~$ apt --version apt 3.0.1 (amd64) acerion@debian:~$ sudo apt-get update Ign:1 http://10.0.0.237/12 ./ InRelease Ign:1 http://10.0.0.237/12 ./ InRelease Ign:1 http://10.0.0.237/12 ./ InRelease Err:1 http://10.0.0.237/12 ./ InRelease Could not connect to 10.0.0.237:80 (10.0.0.237), connection timed out Unable to connect to 10.0.0.237:http: Reading package lists... Done W: Failed to fetch http://10.0.0.237/12/./InRelease Unable to connect to 10.0.0.237:http: W: Some index files failed to download. They have been ignored, or old ones used instead. N: Some sources can be modernized. Run 'apt modernize-sources' to do so. acerion@debian:~$ Judging by the count of "Ign"-prefixed messages (and judging by the code in repo), apt 3.1.0 still uses 3 as default value of the "Acquire::Retries" parameter. As you can see, apt prints "Ign" message N times, where N corresponds with value of "Acquire::Retries". After the fix, the value if repeated "Ign" messages is 3 by default. I have not observed a correlation between value of Retires and a count of TCP SYN packets (or their retransmissions) sent to server. I guess that the presence/count of "Ign" messages is the indicator of behaviour expected in the ticket. Based on all the info above, I'm closing this ticket. Kamil
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