From 06a6935d583a684869129350fed170d467ad8acc Mon Sep 17 00:00:00 2001
From: Dirk Koopman <djk@tobit.co.uk>
Date: Sat, 14 Sep 2013 00:06:45 +0100
Subject: [PATCH] start of mojo conversion

---
 perl/Msg.pm     | 521 ++++++++++++------------------------------------
 perl/Version.pm |   6 +-
 perl/cluster.pl | 107 +++++-----
 3 files changed, 196 insertions(+), 438 deletions(-)

diff --git a/perl/Msg.pm b/perl/Msg.pm
index 83c82be6..d62cb744 100644
--- a/perl/Msg.pm
+++ b/perl/Msg.pm
@@ -14,88 +14,18 @@ use strict;
 
 use DXUtil;
 
-use IO::Select;
+use Mojo::IOLoop;
+use Mojo::IOLoop::Stream;
+
 use DXDebug;
 use Timer;
 
-use vars qw(%rd_callbacks %wt_callbacks %er_callbacks $rd_handles $wt_handles $er_handles $now %conns $noconns $blocking_supported $cnum $total_in $total_out $io_socket);
+use vars qw($now %conns $noconns $cnum $total_in $total_out);
 
-%rd_callbacks = ();
-%wt_callbacks = ();
-%er_callbacks = ();
-$rd_handles   = IO::Select->new();
-$wt_handles   = IO::Select->new();
-$er_handles   = IO::Select->new();
 $total_in = $total_out = 0;
 
 $now = time;
 
-BEGIN {
-    # Checks if blocking is supported
-    eval {
-		local $^W;
-        require POSIX; POSIX->import(qw(O_NONBLOCK F_SETFL F_GETFL))
-    };
-
-	eval {
-		local $^W;
-		require IO::Socket::INET6;
-	};
-
-	if ($@) {
-		dbg($@);
-		require IO::Socket;
-		$io_socket = 'IO::Socket::INET';
-	} else {
-		$io_socket = 'IO::Socket::INET6';
-	}
-	$io_socket->import;
-
-	if ($@ || $main::is_win) {
-		$blocking_supported = $io_socket->can('blocking') ? 2 : 0;
-	} else {
-		$blocking_supported = $io_socket->can('blocking') ? 2 : 1;
-	}
-
-
-	# import as many of these errno values as are available
-	eval {
-		local $^W;
-		require Errno; Errno->import(qw(EAGAIN EINPROGRESS EWOULDBLOCK));
-	};
-
-	unless ($^O eq 'MSWin32') {
-		if ($] >= 5.6) {
-			eval {
-				local $^W;
-				require Socket; Socket->import(qw(IPPROTO_TCP TCP_NODELAY));
-			};
-		} else {
-			dbg("IPPROTO_TCP and TCP_NODELAY manually defined");
-			eval 'sub IPPROTO_TCP {     6 };';
-			eval 'sub TCP_NODELAY {     1 };';
-		}
-	}
-	# http://support.microsoft.com/support/kb/articles/Q150/5/37.asp
-	# defines EINPROGRESS as 10035.  We provide it here because some
-	# Win32 users report POSIX::EINPROGRESS is not vendor-supported.
-	if ($^O eq 'MSWin32') { 
-		eval '*EINPROGRESS = sub { 10036 };' unless defined *EINPROGRESS;
-		eval '*EWOULDBLOCK = *EAGAIN = sub { 10035 };' unless defined *EWOULDBLOCK;
-		eval '*F_GETFL     = sub {     0 };' unless defined *F_GETFL;
-		eval '*F_SETFL     = sub {     0 };' unless defined *F_SETFL;
-		eval 'sub IPPROTO_TCP  {     6 };';
-		eval 'sub TCP_NODELAY  {     1 };';
-		$blocking_supported = 0;   # it appears that this DOESN'T work :-(
-	} 
-}
-
-my $w = $^W;
-$^W = 0;
-my $eagain = eval {EAGAIN()};
-my $einprogress = eval {EINPROGRESS()};
-my $ewouldblock = eval {EWOULDBLOCK()};
-$^W = $w;
 $cnum = 0;
 
 
@@ -123,7 +53,7 @@ sub new
 
 	$noconns++;
 	
-	dbg("$class Connection $conn->{cnum} created (total $noconns)") if isdbg('connll');
+	dbg("$class Connection created (total $noconns)") if isdbg('connll');
 	return bless $conn, $class;
 }
 
@@ -131,33 +61,21 @@ sub set_error
 {
 	my $conn = shift;
 	my $callback = shift;
-	$conn->{eproc} = $callback;
-	set_event_handler($conn->{sock}, error => $callback) if exists $conn->{sock};
+	$conn->{sock}->on(error => sub {my ($stream, $err) = @_; $callback->($conn, $err);});
 }
 
-sub set_rproc
+sub set_on_eof
 {
 	my $conn = shift;
 	my $callback = shift;
-	$conn->{rproc} = $callback;
+	$conn->{sock}->on(close => sub {$callback->($conn);});
 }
 
-sub blocking
+sub set_rproc
 {
-	return unless $blocking_supported;
-
-	# Make the handle stop blocking, the Windows way.
-	if ($blocking_supported) { 
-		$_[0]->blocking($_[1]);
-	} else {
-		my $flags = fcntl ($_[0], F_GETFL, 0);
-		if ($_[1]) {
-			$flags &= ~O_NONBLOCK;
-		} else {
-			$flags |= O_NONBLOCK;
-		}
-		fcntl ($_[0], F_SETFL, $flags);
-	}
+	my $conn = shift;
+	my $callback = shift;
+	$conn->{rproc} = $callback;
 }
 
 # save it
@@ -203,7 +121,7 @@ sub peerhost
 {
 	my $conn = shift;
 	$conn->{peerhost} ||= 'ax25' if $conn->ax25;
-	$conn->{peerhost} ||= $conn->{sock}->peerhost if $conn->{sock} && $conn->{sock}->isa('IO::Socket::INET');
+	$conn->{peerhost} ||= $conn->{sock}->handle->peerhost if $conn->{sock};
 	$conn->{peerhost} ||= 'UNKNOWN';
 	return $conn->{peerhost};
 }
@@ -225,35 +143,17 @@ sub connect {
 	dbg((ref $conn) . " connecting $conn->{cnum} to $to_host:$to_port") if isdbg('connll');
 	
 	my $sock;
-	if ($blocking_supported) {
-		$sock = $io_socket->new(PeerAddr => $to_host, PeerPort => $to_port, Proto => 'tcp', Blocking =>0) or return undef;
-	} else {
-		# Create a new internet socket
-		$sock = $io_socket->new();
-		return undef unless $sock;
-
-		my $proto = getprotobyname('tcp');
-		$sock->socket(AF_INET, SOCK_STREAM, $proto) or return undef;
-
-		blocking($sock, 0);
-		$conn->{blocking} = 0;
-
-		# does the host resolve?
-		my $ip = gethostbyname($to_host);
-		return undef unless $ip;
-
-		my $r = connect($sock, pack_sockaddr_in($to_port, $ip));
-		return undef unless $r || _err_will_block($!);
-	}
+	$conn->{sock} = $sock = Mojo::IOLoop::Client->new;
+	$sock->on(connect => sub { dbg((ref $conn) . " connected $conn->{cnum} to $to_host:$to_port") if isdbg('connll');}, 
+			  error => {$conn->disconnect},
+			  close => {$conn->disconnect});
+	
+	$sock->connect(address => $to_host, port => $to_port);
 	
-	$conn->{sock} = $sock;
-#	$conn->{peerhost} = $sock->peerhost;	# for consistency
-
 	dbg((ref $conn) . " connected $conn->{cnum} to $to_host:$to_port") if isdbg('connll');
 
     if ($conn->{rproc}) {
-        my $callback = sub {$conn->_rcv};
-        set_event_handler ($sock, read => $callback);
+		$sock->on(read => sub {my ($stream, $msg) = @_; $conn->_rcv($msg);} );
     }
     return $conn;
 }
@@ -263,47 +163,47 @@ sub start_program
 	my ($conn, $line, $sort) = @_;
 	my $pid;
 	
-	local $^F = 10000;		# make sure it ain't closed on exec
-	my ($a, $b) = $io_socket->socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC);
-	if ($a && $b) {
-		$a->autoflush(1);
-		$b->autoflush(1);
-		$pid = fork;
-		if (defined $pid) {
-			if ($pid) {
-				close $b;
-				$conn->{sock} = $a;
-				$conn->{csort} = $sort;
-				$conn->{lineend} = "\cM" if $sort eq 'ax25';
-				$conn->{pid} = $pid;
-				if ($conn->{rproc}) {
-					my $callback = sub {$conn->_rcv};
-					Msg::set_event_handler ($a, read => $callback);
-				}
-				dbg("connect $conn->{cnum}: started pid: $conn->{pid} as $line") if isdbg('connect');
-			} else {
-				$^W = 0;
-				dbgclose();
-				STDIN->close;
-				STDOUT->close;
-				STDOUT->close;
-				*STDIN = IO::File->new_from_fd($b, 'r') or die;
-				*STDOUT = IO::File->new_from_fd($b, 'w') or die;
-				*STDERR = IO::File->new_from_fd($b, 'w') or die;
-				close $a;
-				unless ($main::is_win) {
-					#						$SIG{HUP} = 'IGNORE';
-					$SIG{HUP} = $SIG{CHLD} = $SIG{TERM} = $SIG{INT} = 'DEFAULT';
-					alarm(0);
-				}
-				exec "$line" or dbg("exec '$line' failed $!");
-			} 
-		} else {
-			dbg("cannot fork for $line");
-		}
-	} else {
-		dbg("no socket pair $! for $line");
-	}
+#	local $^F = 10000;		# make sure it ain't closed on exec
+#	my ($a, $b) = $io_socket->socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC);
+#	if ($a && $b) {
+#		$a->autoflush(1);
+#		$b->autoflush(1);
+#		$pid = fork;
+#		if (defined $pid) {
+#			if ($pid) {
+#				close $b;
+#				$conn->{sock} = $a;
+#				$conn->{csort} = $sort;
+#				$conn->{lineend} = "\cM" if $sort eq 'ax25';
+#				$conn->{pid} = $pid;
+#				if ($conn->{rproc}) {
+#					my $callback = sub {$conn->_rcv};
+#					Msg::set_event_handler ($a, read => $callback);
+#				}
+#				dbg("connect $conn->{cnum}: started pid: $conn->{pid} as $line") if isdbg('connect');
+#			} else {
+#				$^W = 0;
+#				dbgclose();
+#				STDIN->close;
+#				STDOUT->close;
+#				STDOUT->close;
+#				*STDIN = IO::File->new_from_fd($b, 'r') or die;
+#				*STDOUT = IO::File->new_from_fd($b, 'w') or die;
+#				*STDERR = IO::File->new_from_fd($b, 'w') or die;
+#				close $a;
+#				unless ($main::is_win) {
+#					#						$SIG{HUP} = 'IGNORE';
+#					$SIG{HUP} = $SIG{CHLD} = $SIG{TERM} = $SIG{INT} = 'DEFAULT';
+#					alarm(0);
+#				}
+#				exec "$line" or dbg("exec '$line' failed $!");
+#			} 
+#		} else {
+#			dbg("cannot fork for $line");
+#		}
+#	} else {
+#		dbg("no socket pair $! for $line");
+#	}
 	return $pid;
 }
 
@@ -334,9 +234,7 @@ sub disconnect
 	}
 
 	if (defined($sock)) {
-		set_event_handler ($sock, read => undef, write => undef, error => undef);
-		shutdown($sock, 2);
-		close($sock);
+		$sock->remove;
 	}
 	
 	unless ($main::is_win) {
@@ -344,161 +242,76 @@ sub disconnect
 	}
 }
 
+sub _send_stuff
+{
+	my $conn = shift;
+	my $rq = $conn->{outqueue};
+    my $sock = $conn->{sock};
+	while (@$rq) {
+		my $data = shift @$rq;
+		my $lth = length $data;
+		my $call = $conn->{call} || 'none';
+		if (isdbg('raw')) {
+			if (isdbg('raw')) {
+				dbgdump('raw', "$call send $lth: ", $lth);
+			}
+		}
+		if (defined $sock && !$sock->destroyed) {
+			$sock->write($data);
+			$total_out = $lth;
+		} else {
+			dbg("_send_stuff $call ending data ignored: $data");
+		}
+	}
+}
+
 sub send_now {
     my ($conn, $msg) = @_;
     $conn->enqueue($msg);
-    $conn->_send (1); # 1 ==> flush
+    _send_stuff($conn);
 }
 
 sub send_later {
-    my ($conn, $msg) = @_;
-    $conn->enqueue($msg);
-    my $sock = $conn->{sock};
-    return unless defined($sock);
-    set_event_handler ($sock, write => sub {$conn->_send(0)});
+	goto &send_now;
 }
 
 sub enqueue {
     my $conn = shift;
-    push (@{$conn->{outqueue}}, defined $_[0] ? $_[0] : '');
+    push @{$conn->{outqueue}}, defined $_[0] ? $_[0] : '';
 }
 
-sub _send {
-    my ($conn, $flush) = @_;
-    my $sock = $conn->{sock};
-    return unless defined($sock);
-    my $rq = $conn->{outqueue};
-
-    # If $flush is set, set the socket to blocking, and send all
-    # messages in the queue - return only if there's an error
-    # If $flush is 0 (deferred mode) make the socket non-blocking, and
-    # return to the event loop only after every message, or if it
-    # is likely to block in the middle of a message.
-
-#	if ($conn->{blocking} != $flush) {
-#		blocking($sock, $flush);
-#		$conn->{blocking} = $flush;
-#	}
-    my $offset = (exists $conn->{send_offset}) ? $conn->{send_offset} : 0;
-
-    while (@$rq) {
-        my $msg            = $rq->[0];
-		my $mlth           = length($msg);
-        my $bytes_to_write = $mlth - $offset;
-        my $bytes_written  = 0;
-		confess("Negative Length! msg: '$msg' lth: $mlth offset: $offset") if $bytes_to_write < 0;
-        while ($bytes_to_write > 0) {
-            $bytes_written = syswrite ($sock, $msg,
-                                       $bytes_to_write, $offset);
-            if (!defined($bytes_written)) {
-                if (_err_will_block($!)) {
-                    # Should happen only in deferred mode. Record how
-                    # much we have already sent.
-                    $conn->{send_offset} = $offset;
-                    # Event handler should already be set, so we will
-                    # be called back eventually, and will resume sending
-                    return 1;
-                } else {    # Uh, oh
-					&{$conn->{eproc}}($conn, $!) if exists $conn->{eproc};
-					$conn->disconnect;
-                    return 0; # fail. Message remains in queue ..
-                }
-            } elsif (isdbg('raw')) {
-				my $call = $conn->{call} || 'none';
-				dbgdump('raw', "$call send $bytes_written: ", $msg);
-			}
-			$total_out      += $bytes_written;
-            $offset         += $bytes_written;
-            $bytes_to_write -= $bytes_written;
-        }
-        delete $conn->{send_offset};
-        $offset = 0;
-        shift @$rq;
-        #last unless $flush; # Go back to select and wait
-                            # for it to fire again.
-    }
-    # Call me back if queue has not been drained.
-    unless (@$rq) {
-        set_event_handler ($sock, write => undef);
-		if (exists $conn->{close_on_empty}) {
-			&{$conn->{eproc}}($conn, undef) if exists $conn->{eproc};
-			$conn->disconnect; 
-		}
-    }
-    1;  # Success
-}
-
-sub dup_sock
+sub _err_will_block 
 {
-	my $conn = shift;
-	my $oldsock = $conn->{sock};
-	my $rc = $rd_callbacks{$oldsock};
-	my $wc = $wt_callbacks{$oldsock};
-	my $ec = $er_callbacks{$oldsock};
-	my $sock = $oldsock->new_from_fd($oldsock, "w+");
-	if ($sock) {
-		set_event_handler($oldsock, read=>undef, write=>undef, error=>undef);
-		$conn->{sock} = $sock;
-		set_event_handler($sock, read=>$rc, write=>$wc, error=>$ec);
-		$oldsock->close;
-	}
-}
-
-sub _err_will_block {
-	return 0 unless $blocking_supported;
-	return ($_[0] == $eagain || $_[0] == $ewouldblock || $_[0] == $einprogress);
+	return 0;
 }
 
 sub close_on_empty
 {
 	my $conn = shift;
-	$conn->{close_on_empty} = 1;
+	$conn->{sock}->on(drain => sub {$conn->disconnect;});
 }
 
 #-----------------------------------------------------------------
 # Receive side routines
 
-sub new_server {
-    @_ == 4 || die "Msg->new_server (myhost, myport, login_proc\n";
-    my ($pkg, $my_host, $my_port, $login_proc) = @_;
-	my $self = $pkg->new($login_proc);
+sub new_server 
+{
+#    @_ == 4 || die "Msg->new_server (myhost, myport, login_proc)\n";
+	my ($pkg, $my_host, $my_port, $login_proc) = @_;
+	my $conn = $pkg->new($login_proc);
 	
-    $self->{sock} = $io_socket->new (
-                                          LocalAddr => $my_host,
-                                          LocalPort => $my_port,
-                                          Listen    => SOMAXCONN,
-                                          Proto     => 'tcp',
-                                          Reuse => 1);
-    die "Could not create socket: $! \n" unless $self->{sock};
-    set_event_handler ($self->{sock}, read => sub { $self->new_client }  );
-	return $self;
+    $conn->{sock} = Mojo::IOLoop::Server->new;
+	$conn->{sock}->on(accept=>sub{$conn->new_client()});
+	$conn->{sock}->listen(address=>$my_host, port=>$my_port);
+	
+    die "Could not create socket: $! \n" unless $conn->{sock};
+	return $conn;
 }
 
 
 sub nolinger
 {
 	my $conn = shift;
-
-	unless ($main::is_win) {
-		if (isdbg('sock')) {
-			my ($l, $t) = unpack "ll", getsockopt($conn->{sock}, SOL_SOCKET, SO_LINGER); 
-			my $k = unpack 'l', getsockopt($conn->{sock}, SOL_SOCKET, SO_KEEPALIVE);
-			my $n = $main::is_win ? 0 : unpack "l", getsockopt($conn->{sock}, IPPROTO_TCP, TCP_NODELAY);
-			dbg("Linger is: $l $t, keepalive: $k, nagle: $n");
-		}
-		
-		eval {setsockopt($conn->{sock}, SOL_SOCKET, SO_KEEPALIVE, 1)} or dbg("setsockopt keepalive: $!");
-		eval {setsockopt($conn->{sock}, SOL_SOCKET, SO_LINGER, pack("ll", 0, 0))} or dbg("setsockopt linger: $!");
-		eval {setsockopt($conn->{sock}, IPPROTO_TCP, TCP_NODELAY, 1)} or eval {setsockopt($conn->{sock}, SOL_SOCKET, TCP_NODELAY, 1)} or dbg("setsockopt tcp_nodelay: $!");
-		$conn->{sock}->autoflush(0);
-
-		if (isdbg('sock')) {
-			my ($l, $t) = unpack "ll", getsockopt($conn->{sock}, SOL_SOCKET, SO_LINGER); 
-			my $k = unpack 'l', getsockopt($conn->{sock}, SOL_SOCKET, SO_KEEPALIVE);
-			my $n = $main::is_win ? 0 : unpack "l", getsockopt($conn->{sock}, IPPROTO_TCP, TCP_NODELAY);
-			dbg("Linger is: $l $t, keepalive: $k, nagle: $n");
-		}
-	} 
 }
 
 sub dequeue
@@ -581,37 +394,30 @@ FINISH:
 
 sub new_client {
 	my $server_conn = shift;
-    my $sock = $server_conn->{sock}->accept();
-	if ($sock) {
-		my $conn = $server_conn->new($server_conn->{rproc});
-		$conn->{sock} = $sock;
-		blocking($sock, 0);
-		$conn->nolinger;
-		$conn->{blocking} = 0;
-		my ($rproc, $eproc) = &{$server_conn->{rproc}} ($conn, $conn->{peerhost} = $sock->peerhost(), $conn->{peerport} = $sock->peerport());
-		$conn->{sort} = 'Incoming';
-		if ($eproc) {
-			$conn->{eproc} = $eproc;
-			set_event_handler ($sock, error => $eproc);
-		}
-		if ($rproc) {
-			$conn->{rproc} = $rproc;
-			my $callback = sub {$conn->_rcv};
-			set_event_handler ($sock, read => $callback);
-		} else {  # Login failed
-			&{$conn->{eproc}}($conn, undef) if exists $conn->{eproc};
-			$conn->disconnect();
-		}
-	} else {
-		dbg("Msg: error on accept ($!)") if isdbg('err');
+	my $client = shift;
+	
+	my $conn = $server_conn->new($server_conn->{rproc});
+	my $sock = $conn->{sock} = Mojo::IOLoop::Stream->new($client);
+	$sock->on(read => sub {$conn->_rcv($_[1])});
+	dbg((ref $conn) . "accept $conn->{cnum} from $conn->{peerhost} $conn->{peerport}") if isdbg('connll');
+
+	my ($rproc, $eproc) = &{$server_conn->{rproc}} ($conn, $conn->{peerhost} = $client->peerhost, $conn->{peerport} = $client->peerport);
+	$conn->{sort} = 'Incoming';
+	if ($eproc) {
+		$conn->{eproc} = $eproc;
+	}
+	if ($rproc) {
+		$conn->{rproc} = $rproc;
+	} else {  # Login failed
+		&{$conn->{eproc}}($conn, undef) if exists $conn->{eproc};
+		$conn->disconnect();
 	}
 }
 
 sub close_server
 {
 	my $conn = shift;
-	set_event_handler ($conn->{sock}, read => undef, write => undef, error => undef );
-	$conn->{sock}->close;
+	delete $conn->{sock};
 }
 
 # close all clients (this is for forking really)
@@ -625,87 +431,24 @@ sub close_all_clients
 sub disable_read
 {
 	my $conn = shift;
-	set_event_handler ($conn->{sock}, read => undef);
-	return $_[0] ? $conn->{disable_read} = $_[0] : $_[0];
+	return defined $_[0] ? $conn->{disable_read} = $_[0] : $_[0];
 }
 
+
 #
 #----------------------------------------------------
 # Event loop routines used by both client and server
 
 sub set_event_handler {
-    shift unless ref($_[0]); # shift if first arg is package name
-    my ($handle, %args) = @_;
-    my $callback;
-    if (exists $args{'write'}) {
-        $callback = $args{'write'};
-        if ($callback) {
-            $wt_callbacks{$handle} = $callback;
-            $wt_handles->add($handle);
-        } else {
-            delete $wt_callbacks{$handle};
-            $wt_handles->remove($handle);
-        }
-    }
-    if (exists $args{'read'}) {
-        $callback = $args{'read'};
-        if ($callback) {
-            $rd_callbacks{$handle} = $callback;
-            $rd_handles->add($handle);
-        } else {
-            delete $rd_callbacks{$handle};
-            $rd_handles->remove($handle);
-       }
-    }
-    if (exists $args{'error'}) {
-        $callback = $args{'error'};
-        if ($callback) {
-            $er_callbacks{$handle} = $callback;
-            $er_handles->add($handle);
-        } else {
-            delete $er_callbacks{$handle};
-            $er_handles->remove($handle);
-       }
-    }
-}
-
-sub event_loop {
-    my ($pkg, $loop_count, $timeout, $wronly) = @_; # event_loop(1) to process events once
-    my ($conn, $r, $w, $e, $rset, $wset, $eset);
-    while (1) {
- 
-       # Quit the loop if no handles left to process
-		if ($wronly) {
-			last unless $wt_handles->count();
-        
-			($rset, $wset, $eset) = IO::Select->select(undef, $wt_handles, undef, $timeout);
-			
-			foreach $w (@$wset) {
-				&{$wt_callbacks{$w}}($w) if exists $wt_callbacks{$w};
-			}
-		} else {
-			
-			last unless ($rd_handles->count() || $wt_handles->count());
-        
-			($rset, $wset, $eset) = IO::Select->select($rd_handles, $wt_handles, $er_handles, $timeout);
-			
-			foreach $e (@$eset) {
-				&{$er_callbacks{$e}}($e) if exists $er_callbacks{$e};
-			}
-			foreach $r (@$rset) {
-				&{$rd_callbacks{$r}}($r) if exists $rd_callbacks{$r};
-			}
-			foreach $w (@$wset) {
-				&{$wt_callbacks{$w}}($w) if exists $wt_callbacks{$w};
-			}
-		}
-
-		Timer::handler;
-		
-        if (defined($loop_count)) {
-            last unless --$loop_count;
-        }
-    }
+	my $sock = shift;
+	my %args = @_;
+	my ($pkg, $fn, $line) = caller;
+	my $s;
+	foreach (my ($k,$v) = each %args) {
+		$s .= "$k => $v, ";
+	}
+	$s =~ s/[\s,]$//;
+	dbg("Msg::set_event_handler called from ${pkg}::${fn} line $line doing $s");
 }
 
 sub sleep
@@ -713,7 +456,7 @@ sub sleep
 	my ($pkg, $interval) = @_;
 	my $now = time;
 	while (time - $now < $interval) {
-		$pkg->event_loop(10, 0.01);
+		sleep 1;
 	}
 }
 
diff --git a/perl/Version.pm b/perl/Version.pm
index 2e4836cf..a9a4d35d 100644
--- a/perl/Version.pm
+++ b/perl/Version.pm
@@ -9,9 +9,9 @@ package main;
 
 use vars qw($version $subversion $build $gitversion);
 
-$version = '1.55';
+$version = '1.57';
 $subversion = '0';
-$build = '136';
-$gitversion = '725d28d';
+$build = '1';
+$gitversion = 'e399440';
 
 1;
diff --git a/perl/cluster.pl b/perl/cluster.pl
index 5c3f0fb9..a3e915a6 100755
--- a/perl/cluster.pl
+++ b/perl/cluster.pl
@@ -52,6 +52,8 @@ BEGIN {
 	$systime = time;
 }
 
+use Mojo::IOLoop;
+
 use DXVars;
 use Msg;
 use IntMsg;
@@ -121,7 +123,7 @@ use vars qw(@inqueue $systime $starttime $lockfn @outstanding_connects
 			$zombies $root @listeners $lang $myalias @debug $userfn $clusteraddr
 			$clusterport $mycall $decease $is_win $routeroot $me $reqreg $bumpexisting
 			$allowdxby $dbh $dsn $dbuser $dbpass $do_xml $systime_days $systime_daystart
-			$can_encode $maxconnect_user $maxconnect_node
+			$can_encode $maxconnect_user $maxconnect_node $idle_interval
 		   );
 
 @inqueue = ();					# the main input queue, an array of hashes
@@ -136,6 +138,7 @@ $maxconnect_user = 3;			# the maximum no of concurrent connections a user can ha
 $maxconnect_node = 0;			# Ditto but for nodes. In either case if a new incoming connection
 								# takes the no of references in the routing table above these numbers
 								# then the connection is refused. This only affects INCOMING connections.
+$idle_interval = 0.100;                        # the wait between invocations of the main idle loop processing.
 
 # send a message to call on conn and disconnect
 sub already_conn
@@ -273,7 +276,6 @@ sub cease
 	foreach $dxchan (DXChannel::get_all_nodes) {
 	    $dxchan->disconnect(2) unless $dxchan == $main::me;
 	}
-	Msg->event_loop(100, 0.01);
 
 	# disconnect users
 	foreach $dxchan (DXChannel::get_all_users) {
@@ -288,7 +290,6 @@ sub cease
 	UDPMsg::finish();
 
 	# end everything else
-	Msg->event_loop(100, 0.01);
 	DXUser::finish();
 	DXDupe::finish();
 
@@ -301,6 +302,7 @@ sub cease
 	}
 
 	LogDbg('cluster', "DXSpider V$version, build $subversion.$build (git: $gitversion) ended");
+	dbg("bye bye everyone - bye bye");
 	dbgclose();
 	Logclose();
 
@@ -342,6 +344,60 @@ sub AGWrestart
 	AGWMsg::init(\&new_channel);
 }
 
+sub idle_loop
+{
+	my $timenow = time;
+
+	DXChannel::process();
+
+	#      $DB::trace = 0;
+
+	# do timed stuff, ongoing processing happens one a second
+	if ($timenow != $systime) {
+		reap() if $zombies;
+		$systime = $timenow;
+		my $days = int ($systime / 86400);
+		if ($systime_days != $days) {
+			$systime_days = $days;
+			$systime_daystart = $days * 86400;
+		}
+		IsoTime::update($systime);
+		DXCron::process();      # do cron jobs
+		DXCommandmode::process(); # process ongoing command mode stuff
+		DXXml::process();
+		DXProt::process();		# process ongoing ak1a pcxx stuff
+		DXConnect::process();
+		DXMsg::process();
+		DXDb::process();
+		DXUser::process();
+		DXDupe::process();
+		$systime_days = $days;
+		$systime_daystart = $days * 86400;
+	}
+	IsoTime::update($systime);
+	DXCron::process();			# do cron jobs
+	DXCommandmode::process();	# process ongoing command mode stuff
+	DXXml::process();
+	DXProt::process();			# process ongoing ak1a pcxx stuff
+	DXConnect::process();
+	DXMsg::process();
+	DXDb::process();
+	DXUser::process();
+	DXDupe::process();
+	AGWMsg::process();
+	BPQMsg::process();
+
+	Timer::handler();
+
+	if (defined &Local::process) {
+		eval {
+			Local::process();	# do any localised processing
+		};
+		dbg("Local::process error $@") if $@;
+	}
+}
+
+
 #############################################################
 #
 # The start of the main line of code
@@ -446,7 +502,7 @@ dbg("load badwords: " . (BadWords::load or "Ok"));
 
 # prime some signals
 unless ($DB::VERSION) {
-	$SIG{INT} = $SIG{TERM} = sub { $decease = 1 };
+	$SIG{INT} = $SIG{TERM} = sub { Mojo::IOLoop->stop; };
 }
 
 unless ($is_win) {
@@ -535,49 +591,8 @@ $script->run($main::me) if $script;
 
 #open(DB::OUT, "|tee /tmp/aa");
 
-for (;;) {
-#	$DB::trace = 1;
-
-	Msg->event_loop(10, 0.010);
-	my $timenow = time;
-
-	DXChannel::process();
-
-#	$DB::trace = 0;
+Mojo::IOLoop->start;
 
-	# do timed stuff, ongoing processing happens one a second
-	if ($timenow != $systime) {
-		reap() if $zombies;
-		$systime = $timenow;
-		my $days = int ($systime / 86400);
-		if ($systime_days != $days) {
-			$systime_days = $days;
-			$systime_daystart = $days * 86400;
-		}
-		IsoTime::update($systime);
-		DXCron::process();      # do cron jobs
-		DXCommandmode::process(); # process ongoing command mode stuff
-		DXXml::process();
-		DXProt::process();		# process ongoing ak1a pcxx stuff
-		DXConnect::process();
-		DXMsg::process();
-		DXDb::process();
-		DXUser::process();
-		DXDupe::process();
-		AGWMsg::process();
-		BPQMsg::process();
-
-		if (defined &Local::process) {
-			eval {
-				Local::process();       # do any localised processing
-			};
-			dbg("Local::process error $@") if $@;
-		}
-	}
-	if ($decease) {
-		last if --$decease <= 0;
-	}
-}
 cease(0);
 exit(0);
 
-- 
2.34.1