Hi,
I have similar problem.
I tried morbo, hypnotoad, running Mojolicious as root and regular user,
tried the 'reuse=0' flag, system perl 5.16.3 and custom perl 5.28.1
I also tried $^F=2 in startup script and just before system call
but it looks like O_CLOEXEC is not working (t/run/cloexec is ok) and
children spawned from Mojo app (either with system or backticks) inherit
parent port *:3000
# ss -tlnp |grep *:3000
LISTEN 0 128 *:3000 *:*
users:(("java",pid=18853,fd=3),("script/server",pid=12847,fd=3),("script/server",pid=1860,fd=3))
If I stop and try to start morbo it complains that the spawned process uses
morbo's port:
$ morbo -w lib script/server .
Can't create listen socket: Address already in use at
/home/user/perl5/lib/perl5/Mojo/IOLoop.pm line 124.
Can you recommend a way to auto close FDs (all or >2) for all spawned
processes?
Thank you,
Wes
On Thursday, 7 February 2019 15:06:03 UTC+1, Charlie Brady wrote:
>
>
> Yes, I do mean the HTTP port, and yes, Mojo would be handling that. It's
> been noted before that FD_CLOEXEC doesn't seem to be working as expected
> with Mojo (if indeed it is set by default by perl, as I have seen
> asserted - it is disabled by default on sockets and fds in socket() and
> open()). So maybe my expectation that Mojo should set FD_CLOEXEC is
> misguided.
>
> https://www.perlmonks.org/?node_id=1013743
>
> On Wed, 6 Feb 2019, Nuno Mota wrote:
>
>
> > After a lot of reading, I've managed to close all the sockets on the
> fork
> > itself, after setsid(). That did the trick.
> >
> > I'm assuming the fd you are talking is the HTTP port itself, because
> that's
> > the one hooked on my daemon.
> > That would be Mojo handling it, am I wrong?
> >
> > Regards,
> > Nuno Mota
> >
> >
> >
> > Charlie Brady <[email protected] <javascript:>> escreveu no
> dia quarta,
> > 6/02/2019 à(s) 15:36:
> >
> > >
> > > You can find the file descriptor of the listen socket using 'fd' from
> > > the daemon.
> > >
> > > https://mojolicious.org/perldoc/Mojo/Server/Daemon
> > >
> > > Make sure that the close-on-exec flag is set on that fd. That should
> be
> > > the default on perl, but maybe it isn't on your platform, or maybe
> > > Mojolicious for some reason clears it...
> > >
> > > https://perldoc.perl.org/Fcntl.html
> > >
> > > On Tue, 5 Feb 2019, Nuno Mota wrote:
> > >
> > > > Hi,
> > > > I'm having an issue with port bindings from my Mojolicious perl
> daemon.
> > > >
> > > > The thing is, I issue a restart through Mojo, which then runs a bash
> > > script
> > > > that restarts a daemon.
> > > > After this daemon starts, it's hooked on the Mojo HTTP port. Does
> this
> > > make
> > > > any sense?
> > > >
> > > > perl 8883 root 16u IPv4 91544 0t0 TCP *:8080
> (LISTEN)
> > > > daemon 9053 root 16u IPv4 91544 0t0 TCP *:8080
> (LISTEN)
> > > >
> > > > I've tried exec, system, backticks and nothing seems to properly
> detach
> > > the
> > > > bash script from the Mojo port hooks.
> > > >
> > > > Regards,
> > > > Nuno
> > > >
> > > >
> > >
> >
> >
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