X-Git-Url: http://dxcluster.net/gitweb/gitweb.cgi?a=blobdiff_plain;f=perl%2FMsg.pm;h=5aebab650caac475f3b05600ff2a2e7e3d46f35b;hb=d17f05b19fac36a0a8a2f828912a1a7ebefae79f;hp=7af8566e09f800f56b232b471945bdd40c827581;hpb=8cf5b21b8c40d97b30a0f605247bc65210df734f;p=spider.git

diff --git a/perl/Msg.pm b/perl/Msg.pm
index 7af8566e..5aebab65 100644
--- a/perl/Msg.pm
+++ b/perl/Msg.pm
@@ -5,35 +5,99 @@
 #
 # I have modified it to suit my devious purposes (Dirk Koopman G1TLH)
 #
-# $Id$
+#
 #
 
 package Msg;
 
 use strict;
-use IO::Select;
-use IO::Socket;
-#use DXDebug;
 
-use vars qw(%rd_callbacks %wt_callbacks $rd_handles $wt_handles $now @timerchain);
+use DXUtil;
+
+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);
 
 %rd_callbacks = ();
 %wt_callbacks = ();
+%er_callbacks = ();
 $rd_handles   = IO::Select->new();
 $wt_handles   = IO::Select->new();
-$now = time;
-@timerchain = ();
+$er_handles   = IO::Select->new();
+$total_in = $total_out = 0;
 
-my $blocking_supported = 0;
+$now = time;
 
 BEGIN {
     # Checks if blocking is supported
     eval {
-        require POSIX; POSIX->import(qw (F_SETFL O_NONBLOCK EAGAIN));
+		local $^W;
+        require POSIX; POSIX->import(qw(O_NONBLOCK F_SETFL F_GETFL))
     };
-    $blocking_supported = 1 unless $@;
+
+	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;
+
+
 #
 #-----------------------------------------------------------------
 # Generalised initializer
@@ -51,49 +115,228 @@ sub new
 		state => 0,
 		lineend => "\r\n",
 		csort => 'telnet',
+		timeval => 60,
+		blocking => 0,
+		cnum => (($cnum < 999) ? (++$cnum) : ($cnum = 1)),
     };
 
+	$noconns++;
+	
+	dbg("Connection created ($noconns)") if isdbg('connll');
 	return bless $conn, $class;
 }
 
+sub set_error
+{
+	my $conn = shift;
+	my $callback = shift;
+	$conn->{eproc} = $callback;
+	set_event_handler($conn->{sock}, error => $callback) if exists $conn->{sock};
+}
+
+sub set_rproc
+{
+	my $conn = shift;
+	my $callback = shift;
+	$conn->{rproc} = $callback;
+}
+
+sub blocking
+{
+	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);
+	}
+}
+
+# save it
+sub conns
+{
+	my $pkg = shift;
+	my $call = shift;
+	my $ref;
+	
+	if (ref $pkg) {
+		$call = $pkg->{call} unless $call;
+		return undef unless $call;
+		dbg("changing $pkg->{call} to $call") if isdbg('connll') && exists $pkg->{call} && $call ne $pkg->{call};
+		delete $conns{$pkg->{call}} if exists $pkg->{call} && exists $conns{$pkg->{call}} && $pkg->{call} ne $call; 
+		$pkg->{call} = $call;
+		$ref = $conns{$call} = $pkg;
+		dbg("Connection $pkg->{cnum} $call stored") if isdbg('connll');
+	} else {
+		$ref = $conns{$call};
+	}
+	return $ref;
+}
+
+# this is only called by any dependent processes going away unexpectedly
+sub pid_gone
+{
+	my ($pkg, $pid) = @_;
+	
+	my @pid = grep {$_->{pid} == $pid} values %conns;
+	foreach my $p (@pid) {
+		&{$p->{eproc}}($p, "$pid has gorn") if exists $p->{eproc};
+		$p->disconnect;
+	}
+}
+
+sub ax25
+{
+	my $conn = shift;
+	return $conn->{csort} eq 'ax25';
+}
+
+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} ||= 'UNKNOWN';
+	return $conn->{peerhost};
+}
+
 #-----------------------------------------------------------------
 # Send side routines
 sub connect {
     my ($pkg, $to_host, $to_port, $rproc) = @_;
 
-    # Create a new internet socket
-    my $sock = IO::Socket::INET->new (
-                                      PeerAddr => $to_host,
-                                      PeerPort => $to_port,
-                                      Proto    => 'tcp',
-                                      Reuse    => 1);
-
-    return undef unless $sock;
-
     # Create a connection end-point object
     my $conn = $pkg;
 	unless (ref $pkg) {
 		$conn = $pkg->new($rproc);
 	}
+	$conn->{peerhost} = $to_host;
+	$conn->{peerport} = $to_port;
+	$conn->{sort} = 'Outgoing';
+	
+	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;
-    
+	$conn->{peerhost} = $sock->peerhost;	# for consistency
+
     if ($conn->{rproc}) {
-        my $callback = sub {_rcv($conn)};
-        set_event_handler ($sock, "read" => $callback);
+        my $callback = sub {$conn->_rcv};
+        set_event_handler ($sock, read => $callback);
     }
     return $conn;
 }
 
-sub disconnect {
+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");
+	}
+	return $pid;
+}
+
+sub disconnect 
+{
     my $conn = shift;
+	return if exists $conn->{disconnecting};
+
+	$conn->{disconnecting} = 1;
     my $sock = delete $conn->{sock};
 	$conn->{state} = 'E';
-	delete $conn->{cmd};
-	$conn->{timeout}->del_timer if $conn->{timeout};
-	return unless defined($sock);
-    set_event_handler ($sock, "read" => undef, "write" => undef);
-    shutdown($sock, 3);
-	close($sock);
+	$conn->{timeout}->del if $conn->{timeout};
+
+	# be careful to delete the correct one
+	my $call;
+	if ($call = $conn->{call}) {
+		my $ref = $conns{$call};
+		delete $conns{$call} if $ref && $ref == $conn;
+	}
+	$call ||= 'unallocated';
+	dbg("Connection $conn->{cnum} $call disconnected") if isdbg('connll');
+	
+	# get rid of any references
+	for (keys %$conn) {
+		if (ref($conn->{$_})) {
+			delete $conn->{$_};
+		}
+	}
+
+	if (defined($sock)) {
+		set_event_handler ($sock, read => undef, write => undef, error => undef);
+		shutdown($sock, 2);
+		close($sock);
+	}
+	
+	unless ($main::is_win) {
+		kill 'TERM', $conn->{pid} if exists $conn->{pid};
+	}
 }
 
 sub send_now {
@@ -107,12 +350,12 @@ sub send_later {
     $conn->enqueue($msg);
     my $sock = $conn->{sock};
     return unless defined($sock);
-    set_event_handler ($sock, "write" => sub {$conn->_send(0)});
+    set_event_handler ($sock, write => sub {$conn->_send(0)});
 }
 
 sub enqueue {
     my $conn = shift;
-    push (@{$conn->{outqueue}}, $_[0]);
+    push (@{$conn->{outqueue}}, defined $_[0] ? $_[0] : '');
 }
 
 sub _send {
@@ -127,7 +370,10 @@ sub _send {
     # return to the event loop only after every message, or if it
     # is likely to block in the middle of a message.
 
-    $flush ? $conn->set_blocking() : $conn->set_non_blocking();
+#	if ($conn->{blocking} != $flush) {
+#		blocking($sock, $flush);
+#		$conn->{blocking} = $flush;
+#	}
     my $offset = (exists $conn->{send_offset}) ? $conn->{send_offset} : 0;
 
     while (@$rq) {
@@ -148,57 +394,60 @@ sub _send {
                     # be called back eventually, and will resume sending
                     return 1;
                 } else {    # Uh, oh
-					delete $conn->{send_offset};
-                    $conn->handle_send_err($!);
+					&{$conn->{eproc}}($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
+        #last unless $flush; # Go back to select and wait
                             # for it to fire again.
     }
     # Call me back if queue has not been drained.
-    if (@$rq) {
-        set_event_handler ($sock, "write" => sub {$conn->_send(0)});
-    } else {
-        set_event_handler ($sock, "write" => undef);
+    unless (@$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 _err_will_block {
-    if ($blocking_supported) {
-        return ($_[0] == EAGAIN());
-    }
-    return 0;
-}
-sub set_non_blocking {                        # $conn->set_blocking
-    if ($blocking_supported) {
-        # preserve other fcntl flags
-        my $flags = fcntl ($_[0], F_GETFL(), 0);
-        fcntl ($_[0], F_SETFL(), $flags | O_NONBLOCK());
-    }
+sub dup_sock
+{
+	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);
+		$oldsock->close;
+	}
 }
-sub set_blocking {
-    if ($blocking_supported) {
-        my $flags = fcntl ($_[0], F_GETFL(), 0);
-        $flags  &= ~O_NONBLOCK(); # Clear blocking, but preserve other flags
-        fcntl ($_[0], F_SETFL(), $flags);
-    }
+
+sub _err_will_block {
+	return 0 unless $blocking_supported;
+	return ($_[0] == $eagain || $_[0] == $ewouldblock || $_[0] == $einprogress);
 }
 
-sub handle_send_err {
-   # For more meaningful handling of send errors, subclass Msg and
-   # rebless $conn.  
-   my ($conn, $err_msg) = @_;
-   warn "Error while sending: $err_msg \n";
-   set_event_handler ($conn->{sock}, "write" => undef);
+sub close_on_empty
+{
+	my $conn = shift;
+	$conn->{close_on_empty} = 1;
 }
 
 #-----------------------------------------------------------------
@@ -209,25 +458,58 @@ sub new_server {
     my ($pkg, $my_host, $my_port, $login_proc) = @_;
 	my $self = $pkg->new($login_proc);
 	
-    $self->{sock} = IO::Socket::INET->new (
-                                          LocalAddr => $my_host,
-                                          LocalPort => $my_port,
-                                          Listen    => 5,
+    $self->{sock} = $io_socket->new (
+                                          LocalAddr => "$my_host:$my_port",
+#                                          LocalPort => $my_port,
+                                          Listen    => SOMAXCONN,
                                           Proto     => 'tcp',
-                                          Reuse     => 1);
+                                          Reuse => 1);
     die "Could not create socket: $! \n" unless $self->{sock};
-    set_event_handler ($self->{sock}, "read" => sub { $self->new_client }  );
+    set_event_handler ($self->{sock}, read => sub { $self->new_client }  );
 	return $self;
 }
 
+
+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
 {
 	my $conn = shift;
-	my $msg;
-	
-	while ($msg = shift @{$conn->{inqueue}}){
-		&{$conn->{rproc}}($conn, $msg, $!);
-		$! = 0;
+
+	if ($conn->{msg} =~ /\n/) {
+		my @lines = split /\r?\n/, $conn->{msg};
+		if ($conn->{msg} =~ /\n$/) {
+			delete $conn->{msg};
+		} else {
+			$conn->{msg} = pop @lines;
+		}
+		for (@lines) {
+			&{$conn->{rproc}}($conn, defined $_ ? $_ : '');
+		}
 	}
 }
 
@@ -239,21 +521,34 @@ sub _rcv {                     # Complement to _send
     return unless defined($sock);
 
 	my @lines;
-    $conn->set_non_blocking();
+#	if ($conn->{blocking}) {
+#		blocking($sock, 0);
+#		$conn->{blocking} = 0;
+#	}
 	$bytes_read = sysread ($sock, $msg, 1024, 0);
 	if (defined ($bytes_read)) {
 		if ($bytes_read > 0) {
-			if ($msg =~ /\n/) {
-				@lines = split /\r?\n/, $msg;
-				$lines[0] = '' unless @lines;
-				$lines[0] = $conn->{msg} . $lines[0] if exists $conn->{msg};
-				push @lines, ' ' unless @lines;
-				if ($msg =~ /\n$/) {
-					delete $conn->{msg};
-				} else {
-					$conn->{msg} = pop @lines;
+			$total_in += $bytes_read;
+			if (isdbg('raw')) {
+				my $call = $conn->{call} || 'none';
+				dbgdump('raw', "$call read $bytes_read: ", $msg);
+			}
+			if ($conn->{echo}) {
+				my @ch = split //, $msg;
+				my $out;
+				for (@ch) {
+					if (/[\cH\x7f]/) {
+						$out .= "\cH \cH";
+						$conn->{msg} =~ s/.$//;
+					} else {
+						$out .= $_;
+						$conn->{msg} .= $_;
+					}
+				}
+				if (defined $out) {
+					set_event_handler ($sock, write => sub{$conn->_send(0)});
+					push @{$conn->{outqueue}}, $out;
 				}
-				push @{$conn->{inqueue}}, @lines if @lines;
 			} else {
 				$conn->{msg} .= $msg;
 			}
@@ -268,36 +563,66 @@ sub _rcv {                     # Complement to _send
 
 FINISH:
     if (defined $bytes_read && $bytes_read == 0) {
-#		$conn->disconnect();
-		&{$conn->{rproc}}($conn, undef, $!);
-		delete $conn->{inqueue};
+		&{$conn->{eproc}}($conn, $!) if exists $conn->{eproc};
+		$conn->disconnect;
     } else {
-		$conn->dequeue;
+		unless ($conn->{disable_read}) {
+			$conn->dequeue if exists $conn->{msg};
+		}
 	}
 }
 
 sub new_client {
 	my $server_conn = shift;
     my $sock = $server_conn->{sock}->accept();
-    my $conn = $server_conn->new($server_conn->{rproc});
-	$conn->{sock} = $sock;
-    my $rproc = &{$server_conn->{rproc}} ($conn, $sock->peerhost(), $sock->peerport());
-    if ($rproc) {
-        $conn->{rproc} = $rproc;
-        my $callback = sub {_rcv($conn)};
-        set_event_handler ($sock, "read" => $callback);
-    } else {  # Login failed
-        $conn->disconnect();
-    }
+	if ($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');
+	}
 }
 
 sub close_server
 {
 	my $conn = shift;
-	set_event_handler ($conn->{sock}, "read" => undef);
+	set_event_handler ($conn->{sock}, read => undef, write => undef, error => undef );
 	$conn->{sock}->close;
 }
 
+# close all clients (this is for forking really)
+sub close_all_clients
+{
+	foreach my $conn (values %conns) {
+		$conn->disconnect;
+	}
+}
+
+sub disable_read
+{
+	my $conn = shift;
+	set_event_handler ($conn->{sock}, read => undef);
+	return $_[0] ? $conn->{disable_read} = $_[0] : $_[0];
+}
+
+#
 #----------------------------------------------------
 # Event loop routines used by both client and server
 
@@ -325,54 +650,50 @@ sub set_event_handler {
             $rd_handles->remove($handle);
        }
     }
-}
-
-sub new_timer
-{
-    my ($pkg, $time, $proc, $recur) = @_;
-	my $obj = ref($pkg);
-	my $class = $obj || $pkg;
-	my $self = bless { t=>$time + time, proc=>$proc }, $class;
-	$self->{interval} = $time if $recur;
-	push @timerchain, $self;
-	return $self;
-}
-
-sub del_timer
-{
-	my $self = shift;
-	@timerchain = grep {$_ != $self} @timerchain;
+    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, $timeout) = @_; # event_loop(1) to process events once
-    my ($conn, $r, $w, $rset, $wset);
+    my ($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
-        last unless ($rd_handles->count() || $wt_handles->count());
+		if ($wronly) {
+			last unless $wt_handles->count();
         
-		($rset, $wset) =
-            IO::Select->select ($rd_handles, $wt_handles, undef, $timeout);
-		$now = time;
-		
-        foreach $r (@$rset) {
-            &{$rd_callbacks{$r}} ($r) if exists $rd_callbacks{$r};
-        }
-        foreach $w (@$wset) {
-            &{$wt_callbacks{$w}}($w) if exists $wt_callbacks{$w};
-        }
-
-		# handle things on the timer chain
-		for (@timerchain) {
-			if ($now >= $_->{t}) {
-				&{$_->{proc}}();
-				$_->{t} = $now + $_->{interval} if exists $_->{interval};
+			($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};
 			}
 		}
 
-		# remove dead timers
-		@timerchain = grep { $_->{t} > $now } @timerchain;
+		Timer::handler;
 		
         if (defined($loop_count)) {
             last unless --$loop_count;
@@ -380,6 +701,25 @@ sub event_loop {
     }
 }
 
+sub sleep
+{
+	my ($pkg, $interval) = @_;
+	my $now = time;
+	while (time - $now < $interval) {
+		$pkg->event_loop(10, 0.01);
+	}
+}
+
+sub DESTROY
+{
+	my $conn = shift;
+	my $call = $conn->{call} || 'unallocated';
+	my $host = $conn->{peerhost} || '';
+	my $port = $conn->{peerport} || '';
+	dbg("Connection $conn->{cnum} $call [$host $port] being destroyed") if isdbg('connll');
+	$noconns--;
+}
+
 1;
 
 __END__