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syspatch -c : call ftp(1) with timeout
23.02.2026 00:44, Kirill A. Korinsky пишет:
> On Sat, 21 Feb 2026 18:30:14 +0100,
> Klemens Nanni <kn@openbsd.org> wrote:
>>
>> 21.02.2026 15:00, Antoine Jacoutot пишет:
>>> On Sat, Feb 21, 2026 at 08:48:58AM +0100, Matthieu Herrb wrote:
>>>> Hi,
>>>>
>>>> I'm using syspatch -c in the monitoring system for a number of OpenBSD
>>>> machines at work.
>>>> From time to time the host listed in /etc/installurl becomes
>>>> unavailable for hours. (I've seen that both with a dedicated mirror or
>>>> with the cdn) causing monitoring errors because the agent (check_mk)
>>>> is stuck.
>>>>
>>>> Adding a timeout option to the ftp(1) command run by syspatch -c is
>>>> enough for me to not have the OpenBSD machines appear unresponsiv in
>>>> the monitoring system.
>>>>
>>>> Would something like this make sense ?
>>>
>>> I think it does.
>>> But why not add it to some of the other ftp(1) calls?
>>
>> ... and sysupgrade(8) and bsd.port.mk(5) FETCH_CMD as well, I guess.
>>
>> Wouldn't it make more sense to provide a more sensible default in ftp(1)
>> so it doesn't wait forever? -w0 could do that if you really wanted, no?
>>
>
> ...which may wait forever if you run pkg_add via something like LTE modem,
> and it decided to "renew" it's public IP.
-w seconds
Wait for seconds for the remote server to connect before giving
up.
This should be the equivalent to curl(1)'s --connect-timeout, although I
did not see which default value they provide.
Ours is zero, i.e. no timeout; -w goes through strtonum(0, 200), so 3m20s
is the maximum value. I picked 30s as new default just to show a diff.
See util.c:timed_connect().
Works great for me. Extra testing done like this:
$ time timeout 40s ftp -4 -o- http://resolves-but-drops-packets
Trying 192.0.2.1...
0m40.02s real 0m00.02s user 0m00.03s system
$ time ./obj/ftp -4 -o- http://resolves-but-drops-packets
Trying 192.0.2.1...
ftp: connect: Operation timed out
0m30.04s real 0m00.01s user 0m00.02s system
Thoughts?
Index: main.c
===================================================================
RCS file: /cvs/src/usr.bin/ftp/main.c,v
diff -u -p -r1.146 main.c
--- main.c 23 Dec 2023 23:03:00 -0000 1.146
+++ main.c 24 Feb 2026 06:04:19 -0000
@@ -188,7 +188,7 @@ char macbuf[4096];
FILE *ttyout;
-int connect_timeout;
+int connect_timeout = 30;
#ifndef SMALL
/* enable using server timestamps by default */
syspatch -c : call ftp(1) with timeout