+#!perl -w
+# Copyright (C) all contributors <meta@public-inbox.org>
+# License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
+# Idle client memory usage test
+use v5.12.1;
+use PublicInbox::TestCommon;
+use File::Temp qw(tempdir);
+use Socket qw(SOCK_STREAM IPPROTO_TCP SOL_SOCKET);
+require_mods(qw(-nntpd));
+require PublicInbox::InboxWritable;
+require PublicInbox::SearchIdx;
+use PublicInbox::Syscall qw(:epoll);
+use PublicInbox::DS;
+my $version = 2; # v2 needs newer git
+require_git('2.6') if $version >= 2;
+use_ok 'IO::Socket::SSL';
+my ($cert, $key) = qw(certs/server-cert.pem certs/server-key.pem);
+unless (-r $key && -r $cert) {
+ plan skip_all =>
+ "certs/ missing for $0, run ./certs/create-certs.perl";
+}
+use_ok 'PublicInbox::TLS';
+my ($tmpdir, $for_destroy) = tmpdir();
+my $err = "$tmpdir/stderr.log";
+my $out = "$tmpdir/stdout.log";
+my $mainrepo = $tmpdir;
+my $pi_config = "$tmpdir/pi_config";
+my $group = 'test-nntpd-tls';
+my $addr = $group . '@example.com';
+local $SIG{PIPE} = 'IGNORE'; # for NNTPC (below)
+my $nntps = tcp_server();
+my $ibx = PublicInbox::Inbox->new({
+ inboxdir => $mainrepo,
+ name => 'nntpd-tls',
+ version => $version,
+ -primary_address => $addr,
+ indexlevel => 'basic',
+});
+$ibx = PublicInbox::InboxWritable->new($ibx, {nproc=>1});
+$ibx->init_inbox(0);
+{
+ open my $fh, '>', $pi_config or die "open: $!\n";
+ print $fh <<EOF
+[publicinbox "nntpd-tls"]
+ mainrepo = $mainrepo
+ address = $addr
+ indexlevel = basic
+ newsgroup = $group
+EOF
+ ;
+ close $fh or die "close: $!\n";
+}
+
+{
+ my $im = $ibx->importer(0);
+ my $eml = eml_load('t/data/0001.patch');
+ ok($im->add($eml), 'message added');
+ $im->done;
+ if ($version == 1) {
+ my $s = PublicInbox::SearchIdx->new($ibx, 1);
+ $s->index_sync;
+ }
+}
+
+my $nntps_addr = tcp_host_port($nntps);
+my $env = { PI_CONFIG => $pi_config };
+my $tls = $ENV{TLS} // 1;
+my $args = $tls ? ["--cert=$cert", "--key=$key", "-lnntps://$nntps_addr"] : [];
+my $cmd = [ '-nntpd', '-W0', @$args, "--stdout=$out", "--stderr=$err" ];
+
+# run_mode=0 ensures Test::More FDs don't get shared
+my $td = start_script($cmd, $env, { 3 => $nntps, run_mode => 0 });
+my %ssl_opt = (
+ SSL_hostname => 'server.local',
+ SSL_verifycn_name => 'server.local',
+ SSL_verify_mode => SSL_VERIFY_PEER(),
+ SSL_ca_file => 'certs/test-ca.pem',
+);
+my $ctx = IO::Socket::SSL::SSL_Context->new(%ssl_opt);
+
+# cf. https://rt.cpan.org/Ticket/Display.html?id=129463
+my $mode = eval { Net::SSLeay::MODE_RELEASE_BUFFERS() };
+if ($mode && $ctx->{context}) {
+ eval { Net::SSLeay::CTX_set_mode($ctx->{context}, $mode) };
+ warn "W: $@ (setting SSL_MODE_RELEASE_BUFFERS)\n" if $@;
+}
+
+$ssl_opt{SSL_reuse_ctx} = $ctx;
+$ssl_opt{SSL_startHandshake} = 0;
+
+my %opt = (
+ Proto => 'tcp',
+ PeerAddr => $nntps_addr,
+ Type => SOCK_STREAM,
+ Blocking => 0
+);
+chomp(my $nfd = `/bin/sh -c 'ulimit -n'`);
+$nfd -= 10;
+ok($nfd > 0, 'positive FD count');
+my $MAX_FD = 10000;
+$nfd = $MAX_FD if $nfd >= $MAX_FD;
+our $DONE = 0;
+sub once { 0 }; # stops event loop
+
+# setup the event loop so that it exits at every step
+# while we're still doing connect(2)
+PublicInbox::DS->SetLoopTimeout(0);
+PublicInbox::DS->SetPostLoopCallback(\&once);
+
+foreach my $n (1..$nfd) {
+ my $io = tcp_connect($nntps, Blocking => 0);
+ $io = IO::Socket::SSL->start_SSL($io, %ssl_opt) if $tls;
+ NNTPC->new($io);
+
+ # one step through the event loop
+ # do a little work as we connect:
+ PublicInbox::DS::event_loop();
+
+ # try not to overflow the listen() backlog:
+ if (!($n % 128) && $n != $DONE) {
+ diag("nr: ($n) $DONE/$nfd");
+ PublicInbox::DS->SetLoopTimeout(-1);
+ PublicInbox::DS->SetPostLoopCallback(sub { $DONE != $n });
+
+ # clear the backlog:
+ PublicInbox::DS::event_loop();
+
+ # resume looping
+ PublicInbox::DS->SetLoopTimeout(0);
+ PublicInbox::DS->SetPostLoopCallback(\&once);
+ }
+}
+my $pid = $td->{pid};
+my $dump_rss = sub {
+ return if $^O ne 'linux';
+ open(my $f, '<', "/proc/$pid/status") or return;
+ diag(grep(/RssAnon/, <$f>));
+};
+$dump_rss->();
+
+# run the event loop normally, now:
+if ($DONE != $nfd) {
+ PublicInbox::DS->SetLoopTimeout(-1);
+ PublicInbox::DS->SetPostLoopCallback(sub {
+ diag "done: ".time." $DONE";
+ $DONE != $nfd;
+ });
+ PublicInbox::DS::event_loop();
+}
+
+is($nfd, $DONE, 'done');
+$dump_rss->();
+if ($^O eq 'linux') {
+ diag " SELF lsof | wc -l ".`lsof -p $$ |wc -l`;
+ diag "SERVER lsof | wc -l ".`lsof -p $pid |wc -l`;
+}
+PublicInbox::DS->Reset;
+$td->kill;
+$td->join;
+is($?, 0, 'no error in exited process');
+done_testing();
+
+package NNTPC;
+use v5.12;
+use parent qw(PublicInbox::DS);
+use PublicInbox::Syscall qw(EPOLLIN EPOLLOUT EPOLLONESHOT);
+use Data::Dumper;
+
+# return true if complete, false if incomplete (or failure)
+sub connect_tls_step ($) {
+ my ($self) = @_;
+ my $sock = $self->{sock} or return;
+ return 1 if $sock->connect_SSL;
+ return $self->drop("$!") unless $!{EAGAIN};
+ if (my $ev = PublicInbox::TLS::epollbit()) {
+ unshift @{$self->{wbuf}}, \&connect_tls_step;
+ PublicInbox::DS::epwait($self->{sock}, $ev | EPOLLONESHOT);
+ 0;
+ } else {
+ $self->drop('BUG? EAGAIN but '.PublicInbox::TLS::err());
+ }
+}
+
+sub event_step ($) {
+ my ($self) = @_;
+
+ # TLS negotiation happens in flush_write via {wbuf}
+ return unless $self->flush_write && $self->{sock};
+
+ if ($self->{step} == -2) {
+ $self->do_read(\(my $buf = ''), 128) or return;
+ $buf =~ /\A201 / or die "no greeting";
+ $self->{step} = -1;
+ $self->write(\"COMPRESS DEFLATE\r\n");
+ }
+ if ($self->{step} == -1) {
+ $self->do_read(\(my $buf = ''), 128) or return;
+ $buf =~ /\A20[0-9] / or die "no compression $buf";
+ NNTPCdeflate->enable($self);
+ $self->{step} = 1;
+ $self->write(\"DATE\r\n");
+ }
+ if ($self->{step} == 0) {
+ $self->do_read(\(my $buf = ''), 128) or return;
+ $buf =~ /\A201 / or die "no greeting";
+ $self->{step} = 1;
+ $self->write(\"DATE\r\n");
+ }
+ if ($self->{step} == 1) {
+ $self->do_read(\(my $buf = ''), 128) or return;
+ $buf =~ /\A111 / or die 'no date';
+ no warnings 'once';
+ $::DONE++;
+ $self->{step} = 2; # all done
+ } else {
+ die "$self->{step} Should never get here ". Dumper($self);
+ }
+}
+
+sub new {
+ my ($class, $io) = @_;
+ my $self = bless {}, $class;
+
+ # wait for connect(), and maybe SSL_connect()
+ $self->SUPER::new($io, EPOLLOUT|EPOLLONESHOT);
+ $self->{wbuf} = [ \&connect_tls_step ] if $io->can('connect_SSL');
+ $self->{step} = -2; # determines where we start event_step
+ $self;
+};
+
+1;
+package NNTPCdeflate;
+use v5.12;
+our @ISA = qw(NNTPC PublicInbox::DS);
+use Compress::Raw::Zlib;
+use PublicInbox::DSdeflate;
+BEGIN {
+ *write = \&PublicInbox::DSdeflate::write;
+ *do_read = \&PublicInbox::DSdeflate::do_read;
+ *event_step = \&NNTPC::event_step;
+ *flush_write = \&PublicInbox::DS::flush_write;
+ *close = \&PublicInbox::DS::close;
+}
+
+sub enable {
+ my ($class, $self) = @_;
+ my %ZIN_OPT = ( -WindowBits => -15, -AppendOutput => 1 );
+ my ($in, $err) = Compress::Raw::Zlib::Inflate->new(%ZIN_OPT);
+ die "Inflate->new failed: $err" if $err != Z_OK;
+ bless $self, $class;
+ $self->{zin} = $in;
+}
+
+1;