1 # Copyright (C) 2015-2018 all contributors <meta@public-inbox.org>
2 # License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
4 # Used by -nntpd for listen sockets
5 package PublicInbox::Listener;
8 use base 'Danga::Socket';
9 use Socket qw(SOL_SOCKET SO_KEEPALIVE IPPROTO_TCP TCP_NODELAY);
10 use fields qw(post_accept);
14 my ($class, $s, $cb) = @_;
15 setsockopt($s, SOL_SOCKET, SO_KEEPALIVE, 1);
16 setsockopt($s, IPPROTO_TCP, TCP_NODELAY, 1); # ignore errors on non-TCP
18 IO::Handle::blocking($s, 0);
19 my $self = fields::new($class);
20 $self->SUPER::new($s); # calls epoll_create for the first socket
22 $self->{post_accept} = $cb;
28 my $sock = $self->{sock};
30 # no loop here, we want to fairly distribute clients
31 # between multiple processes sharing the same socket
32 # XXX our event loop needs better granularity for
33 # a single accept() here to be, umm..., acceptable
34 # on high-traffic sites.
35 if (my $addr = accept(my $c, $sock)) {
36 IO::Handle::blocking($c, 0); # no accept4 :<
37 $self->{post_accept}->($c, $addr, $sock);