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package PeerManager;
use strict;
use warnings;
use QtCore4;
use QtGui4;
use QtNetwork4;
use QtCore4::isa qw( Qt::Object );
use QtCore4::signals
newConnection => ['QTcpSocket*'];
use QtCore4::slots
sendBroadcastDatagram => [],
readBroadcastDatagram => [];
use Client;
use Connection;
use List::MoreUtils qw( first_index );
sub client() {
return this->{client};
}
sub broadcastAddresses() {
return this->{broadcastAddresses};
}
sub ipAddresses() {
return this->{ipAddresses};
}
sub broadcastSocket() {
return this->{broadcastSocket};
}
sub broadcastTimer() {
return this->{broadcastTimer};
}
sub username() {
return this->{username};
}
sub serverPort() {
return this->{serverPort};
}
#Client *client;
#Qt::List<Qt::HostAddress> broadcastAddresses;
#Qt::List<Qt::HostAddress> ipAddresses;
#Qt::UdpSocket broadcastSocket;
#Qt::Timer broadcastTimer;
#Qt::ByteArray username;
#int serverPort;
my $BroadcastInterval = 2000;
my $broadcastPort = 45000;
sub NEW
{
my ($class, $client) = @_;
$class->SUPER::NEW($client);
this->{client} = $client;
my @envVariables = qw( USERNAME.* USER.* USERDOMAIN.*
HOSTNAME.* DOMAINNAME.* );
my $environment = Qt::Process::systemEnvironment();
foreach my $string ( @envVariables ) {
my $index = first_index{ $_ =~ m/$string/ } @{$environment};
if ($index != -1) {
my @stringList = split m/=/, $environment->[$index];
if (scalar @stringList == 2) {
utf8::decode($stringList[1]);
this->{username} = Qt::ByteArray($stringList[1]);
last;
}
}
}
if (!defined username()) {
this->{username} = Qt::ByteArray('unknown');
}
updateAddresses();
this->{serverPort} = 0;
this->{broadcastSocket} = Qt::UdpSocket();
broadcastSocket()->bind(Qt::HostAddress(Qt::HostAddress::Any()), $broadcastPort, Qt::UdpSocket::ShareAddress()
| Qt::UdpSocket::ReuseAddressHint());
this->connect(broadcastSocket, SIGNAL 'readyRead()',
this, SLOT 'readBroadcastDatagram()');
this->{broadcastTimer} = Qt::Timer(this);
broadcastTimer()->setInterval($BroadcastInterval);
this->connect(broadcastTimer(), SIGNAL 'timeout()',
this, SLOT 'sendBroadcastDatagram()');
}
sub setServerPort
{
my ($port) = @_;
this->{serverPort} = $port;
}
sub userName
{
return username();
}
sub startBroadcasting
{
broadcastTimer()->start();
}
sub isLocalHostAddress
{
my ($address) = @_;
foreach my $localAddress ( @{ipAddresses()} ) {
if ($address == $localAddress) {
return 1;
}
}
return 0;
}
sub sendBroadcastDatagram
{
my $datagram = Qt::ByteArray(username);
$datagram->append('@');
$datagram->append(Qt::CString(serverPort()));
my $validBroadcastAddresses = 1;
foreach my $address ( @{broadcastAddresses()} ) {
if (broadcastSocket()->writeDatagram($datagram, $address,
$broadcastPort) == -1) {
$validBroadcastAddresses = 0;
}
}
if (!$validBroadcastAddresses) {
updateAddresses();
}
}
sub readBroadcastDatagram
{
while (broadcastSocket()->hasPendingDatagrams()) {
my $senderIp = Qt::HostAddress();
my $senderPort;
my $datagram = '';
my $datagramSize = broadcastSocket()->pendingDatagramSize();
if (broadcastSocket()->readDatagram(\$datagram, $datagramSize,
$senderIp, \$senderPort) == -1) {
next;
}
my @list = split m/@/, $datagram;
if (scalar @list != 2) {
next;
}
my $senderServerPort = $list[1];
if (isLocalHostAddress($senderIp) && $senderServerPort == serverPort()) {
next;
}
if (!client->hasConnection($senderIp)) {
my $connection = Connection(this);
emit newConnection($connection);
$connection->connectToHost($senderIp, $senderServerPort);
}
}
}
sub updateAddresses
{
this->{broadcastAddresses} = [];
this->{ipAddresses} = [];
foreach my $interface ( @{Qt::NetworkInterface::allInterfaces()} ) {
foreach my $entry ( @{$interface->addressEntries()} ) {
my $broadcastAddress = $entry->broadcast();
if ($broadcastAddress != Qt::HostAddress::Null() && $entry->ip() != Qt::HostAddress::LocalHost()) {
push @{this->{broadcastAddresses}}, $broadcastAddress;
push @{this->{ipAddresses}}, $entry->ip();
}
}
}
}
1;
|
