I`m writing simple xmpp client using Net::XMPP and Win32::GUI. I want to know how to make recieving loop assynchronous.

First I try to moved loop to another thread. But it fails with many errors:

Use of uninitialized value in concatenation (.) or string at C:/strawb
+erry/perl/site/lib/XML/Stream.pm line 1439.
Use of uninitialized value in hash element at C:/strawberry/perl/site/
+lib/XML/Stream.pm line 1440.
Use of uninitialized value in concatenation (.) or string at C:/strawb
+erry/perl/site/lib/XML/Stream.pm line 1440.
Use of uninitialized value in hash element at C:/strawberry/perl/site/
+lib/XML/Stream.pm line 1443.
Use of uninitialized value in numeric eq (==) at C:/strawberry/perl/si
+te/lib/XML/Stream.pm line 1443.
Use of uninitialized value in hash element at C:/strawberry/perl/site/
+lib/XML/Stream.pm line 1443.
Use of uninitialized value within %status in numeric eq (==) at C:/str
+awberry/perl/site/lib/XML/Stream.pm line 1506.
Use of uninitialized value in subtraction (-) at C:/strawberry/perl/si
+te/lib/XML/Stream.pm line 1507.
Use of uninitialized value in concatenation (.) or string at C:/strawb
+erry/perl/site/lib/XML/Stream.pm line 1669.
Use of uninitialized value in numeric eq (==) at C:/strawberry/perl/si
+te/lib/XML/Stream.pm line 1673.
Use of uninitialized value in concatenation (.) or string at C:/strawb
+erry/perl/site/lib/XML/Stream.pm line 1439.
Use of uninitialized value in hash element at C:/strawberry/perl/site/
+lib/XML/Stream.pm line 1440.
Use of uninitialized value in hash element at C:/strawberry/perl/site/
+lib/XML/Stream.pm line 1443.
Use of uninitialized value in hash element at C:/strawberry/perl/site/
+lib/XML/Stream.pm line 1443.
Use of uninitialized value in concatenation (.) or string at C:/strawb
+erry/perl/site/lib/XML/Stream.pm line 1439.
Use of uninitialized value in hash element at C:/strawberry/perl/site/
+lib/XML/Stream.pm line 1440.
Use of uninitialized value in hash element at C:/strawberry/perl/site/
+lib/XML/Stream.pm line 1443.
Use of uninitialized value in hash element at C:/strawberry/perl/site/
+lib/XML/Stream.pm line 1443.

....
[download]

So I use Win32::GUI::Timer, which call $client->Process(1) every 3 seconds. But function need some time to execute, so window freezes for a moment. How can I avoid these and call Process() asynchronously?

use Win32::GUI();
use Net::XMPP;
use feature 'say';

my $wnd = Win32::GUI::Window->new(
    -size => [320, 240]
);
$wnd->AddTextfield(
    -name => 'messages',
    -size => [$wnd->ScaleWidth, 130],
    -pos => [0, 0],
    -multiline => 1
);
$wnd->AddTextfield(
    -name => 'new_message',
    -size => [$wnd->ScaleWidth, 20],
    -pos => [0, 140],
    -multiline => 1
);
$wnd->AddButton(
    -text => 'Send',
    -size => [80, 24],
    -pos => [$wnd->ScaleWidth / 2 - 40, 170],
    -onClick => \&send_message
);

$wnd->Center;
$wnd->Show;




my $client = new Net::XMPP::Client;

$client->SetCallBacks(
    message => sub {
        my ($mid, $message) = @_;
        say 'message recieved';
        $wnd->messages->Text($wnd->messages->Text() . '[' . $message->
+GetFrom('jid')->GetUserID . ']   ' . $message->GetBody . "\r\n")
    }
);

my $result = $client->Connect(
    hostname => 'xmpphostname',
    port => '5222',
    timeout => 7,
    ssl => 0,
    tsl => 0
);
if ($result) {
    $client->AuthSend(
        username => 'user1',
        password => '123'
    );
}

if ($client->Connected) {
    say 'connected to server';
} else {
    say 'error connecting to server: ' . $!;
    exit 0;
}

my $pres = Net::XMPP::Presence->new();
$pres->SetType('available');
$client->Send($pres);

my $timer = $wnd->AddTimer('timer', 3000);

Win32::GUI::Dialog();

sub timer_Timer() {
    if ($client->Connected) {
        $client->Connect() unless defined $client->Process(1);
    } else {
        $client->Connect() or die('cant connect');
    }
}

sub send_message() {
    my $msg = $wnd->new_message->Text();
    $client->MessageSend(
        to => 'user2@xmpphostname',
        type => 'chat',
        body => $msg
    );
    $wnd->messages->Text($wnd->messages->Text() . "[me]   $msg\r\n");
    $wnd->new_message->Text('');
}
[download]

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