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package MHFS::HTTP::Server v0.7.0;
use 5.014;
use strict; use warnings;
use feature 'say';
use IO::Socket::INET;
use Socket qw(IPPROTO_TCP TCP_KEEPALIVE TCP_NODELAY);
use IO::Poll qw(POLLIN POLLOUT POLLHUP);
use Scalar::Util qw(weaken);
use Feature::Compat::Try;
use File::Path qw(make_path);
use Data::Dumper;
use Carp ();
use Config;
use MHFS::EventLoop::Poll;
use MHFS::FS;
use MHFS::HTTP::Server::Client;
use MHFS::Settings;
use MHFS::Util qw(parse_ipv4 read_text_file);

sub new {
    my ($class, $launchsettings, $plugins, $routes) = @_;

    local $SIG{PIPE} = sub {
        print STDERR "SIGPIPE @_\n";
    };
    local $SIG{ __DIE__ } = \&Carp::confess if ($launchsettings->{debug});

    binmode(STDOUT, ":utf8");
    binmode(STDERR, ":utf8");

    # load settings
    say __PACKAGE__.": loading settings";
    my $settings = MHFS::Settings::load($launchsettings);
    if((exists $settings->{'flush'}) && ($settings->{'flush'})) {
        say __PACKAGE__.": setting autoflush on STDOUT and STDERR";
        STDOUT->autoflush(1);
        STDERR->autoflush(1);
    }

    # make the temp dirs
    make_path($settings->{'VIDEO_TMPDIR'}, $settings->{'MUSIC_TMPDIR'}, $settings->{'RUNTIME_DIR'}, $settings->{'GENERIC_TMPDIR'});
    make_path($settings->{'SECRET_TMPDIR'}, {chmod => 0600});
    make_path($settings->{'DATADIR'}, $settings->{'MHFS_TRACKER_TORRENT_DIR'});

    my $sock = IO::Socket::INET->new(Listen => 10000, LocalAddr => $settings->{'HOST'}, LocalPort => $settings->{'PORT'}, Proto => 'tcp', Reuse => 1, Blocking => 0);
    if(! $sock) {
        say "server: Cannot create self socket";
        return undef;
    }

    if(! $sock->setsockopt( SOL_SOCKET, SO_KEEPALIVE, 1)) {
        say "server: cannot setsockopt";
        return undef;
    }
    my $TCP_KEEPIDLE  = 4;
    my $TCP_KEEPINTVL   = 5;
    my $TCP_KEEPCNT   = 6;
    my $TCP_USER_TIMEOUT = 18;
    #$SERVER->setsockopt(IPPROTO_TCP, $TCP_KEEPIDLE, 1) or die;
    #$SERVER->setsockopt(IPPROTO_TCP, $TCP_KEEPINTVL, 1) or die;
    #$SERVER->setsockopt(IPPROTO_TCP, $TCP_KEEPCNT, 10) or die;
    #$SERVER->setsockopt(IPPROTO_TCP, $TCP_USER_TIMEOUT, 10000) or die; #doesn't work?
    #$SERVER->setsockopt(SOL_SOCKET, SO_LINGER, pack("II",1,0)) or die; #to stop last ack

    # leaving Nagle's algorithm enabled for now as sometimes headers are sent without data
    #$sock->setsockopt(IPPROTO_TCP, TCP_NODELAY, 1) or die("Failed to set TCP_NODELAY");

    # linux specific settings. Check in BEGIN?