X-Git-Url: http://dxcluster.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=perl%2FMsg.pm;h=f6164132a33469ae7757e171863d722146e10195;hb=b56ccffc81ac94b40755bb8c7485eb223f7e2ff4;hp=815937963962169d8fb2e4d8e0808cb8675bc2a4;hpb=3f64c5686df118fa3f3a1d66a87f25b89eb1732a;p=spider.git

diff --git a/perl/Msg.pm b/perl/Msg.pm
index 81593796..f6164132 100644
--- a/perl/Msg.pm
+++ b/perl/Msg.pm
@@ -11,12 +11,19 @@
 package Msg;
 
 use strict;
+
+use vars qw($VERSION $BRANCH);
+$VERSION = sprintf( "%d.%03d", q$Revision$ =~ /(\d+)\.(\d+)/ );
+$BRANCH = sprintf( "%d.%03d", q$Revision$ =~ /\d+\.\d+\.(\d+)\.(\d+)/ ) || 0;
+$main::build += $VERSION;
+$main::branch += $BRANCH;
+
 use IO::Select;
 use IO::Socket;
 use DXDebug;
 use Timer;
 
-use vars qw(%rd_callbacks %wt_callbacks %er_callbacks $rd_handles $wt_handles $er_handles $now %conns $noconns $blocking_supported);
+use vars qw(%rd_callbacks %wt_callbacks %er_callbacks $rd_handles $wt_handles $er_handles $now %conns $noconns $blocking_supported $cnum);
 
 %rd_callbacks = ();
 %wt_callbacks = ();
@@ -33,11 +40,11 @@ BEGIN {
         require POSIX; POSIX->import(qw(O_NONBLOCK F_SETFL F_GETFL))
     };
 	if ($@ || $main::is_win) {
-		print STDERR "POSIX Blocking *** NOT *** supported $@\n";
+#		print STDERR "POSIX Blocking *** NOT *** supported $@\n";
 		$blocking_supported = 0;
 	} else {
 		$blocking_supported = 1;
-		print STDERR "POSIX Blocking enabled\n";
+#		print STDERR "POSIX Blocking enabled\n";
 	}
 
 
@@ -45,6 +52,30 @@ BEGIN {
 	eval {
 		require Errno; Errno->import(qw(EAGAIN EINPROGRESS EWOULDBLOCK));
 	};
+
+	unless ($^O eq 'MSWin32') {
+		if ($] >= 5.6) {
+			eval {
+				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 };';
+		eval '*EWOULDBLOCK = *EAGAIN = sub { 10035 };';
+		eval '*F_GETFL     = sub {     0 };';
+		eval '*F_SETFL     = sub {     0 };';
+		eval '*IPPROTO_TCP     = sub {     6 };';
+		eval '*TCP_NODELAY     = sub {     1 };';
+		$blocking_supported = 0;   # it appears that this DOESN'T work :-(
+	} 
 }
 
 my $w = $^W;
@@ -53,6 +84,8 @@ my $eagain = eval {EAGAIN()};
 my $einprogress = eval {EINPROGRESS()};
 my $ewouldblock = eval {EWOULDBLOCK()};
 $^W = $w;
+$cnum = 0;
+
 
 #
 #-----------------------------------------------------------------
@@ -73,10 +106,12 @@ sub new
 		csort => 'telnet',
 		timeval => 60,
 		blocking => 0,
-		cnum => ++$noconns,
+		cnum => (($cnum < 999) ? (++$cnum) : ($cnum = 1)),
     };
 
-	dbg('connll', "Connection created ($noconns)");
+	$noconns++;
+	
+	dbg("Connection created ($noconns)") if isdbg('connll');
 	return bless $conn, $class;
 }
 
@@ -98,14 +133,23 @@ sub set_rproc
 sub blocking
 {
 	return unless $blocking_supported;
-	
-	my $flags = fcntl ($_[0], F_GETFL, 0);
-	if ($_[1]) {
-		$flags &= ~O_NONBLOCK;
+
+	# Make the handle stop blocking, the Windows way.
+	if ($main::is_win) { 
+	  # 126 is FIONBIO (some docs say 0x7F << 16)
+		ioctl( $_[0],
+			   0x80000000 | (4 << 16) | (ord('f') << 8) | 126,
+			   "$_[1]"
+			 );
 	} else {
-		$flags |= O_NONBLOCK;
+		my $flags = fcntl ($_[0], F_GETFL, 0);
+		if ($_[1]) {
+			$flags &= ~O_NONBLOCK;
+		} else {
+			$flags |= O_NONBLOCK;
+		}
+		fcntl ($_[0], F_SETFL, $flags);
 	}
-	fcntl ($_[0], F_SETFL, $flags);
 }
 
 # save it
@@ -118,10 +162,11 @@ sub conns
 	if (ref $pkg) {
 		$call = $pkg->{call} unless $call;
 		return undef unless $call;
-		confess "changing $pkg->{call} to $call" if exists $pkg->{call} && $call ne $pkg->{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('connll', "Connection $pkg->{cnum} $call stored");
+		dbg("Connection $pkg->{cnum} $call stored") if isdbg('connll');
 	} else {
 		$ref = $conns{$call};
 	}
@@ -134,9 +179,9 @@ sub pid_gone
 	my ($pkg, $pid) = @_;
 	
 	my @pid = grep {$_->{pid} == $pid} values %conns;
-	for (@pid) {
-		&{$_->{eproc}}($_, "$pid has gorn") if exists $_->{eproc};
-		$_->disconnect;
+	foreach my $p (@pid) {
+		&{$p->{eproc}}($p, "$pid has gorn") if exists $p->{eproc};
+		$p->disconnect;
 	}
 }
 
@@ -194,12 +239,8 @@ sub disconnect {
 		delete $conns{$call} if $ref && $ref == $conn;
 	}
 	$call ||= 'unallocated';
-	dbg('connll', "Connection $conn->{cnum} $call disconnected");
+	dbg("Connection $conn->{cnum} $call disconnected") if isdbg('connll');
 	
-	unless ($main::is_win) {
-		kill 'TERM', $conn->{pid} if exists $conn->{pid};
-	}
-
 	# get rid of any references
 	for (keys %$conn) {
 		if (ref($conn->{$_})) {
@@ -207,10 +248,16 @@ sub disconnect {
 		}
 	}
 
-	return unless defined($sock);
-    set_event_handler ($sock, read => undef, write => undef, error => undef);
-    shutdown($sock, 3);
-	close($sock);
+	if (defined($sock)) {
+		set_event_handler ($sock, read => undef, write => undef, error => undef);
+		shutdown($sock, 3);
+		close($sock);
+	}
+	
+	unless ($main::is_win) {
+		kill 'TERM', $conn->{pid} if exists $conn->{pid};
+	}
+
 }
 
 sub send_now {
@@ -282,13 +329,11 @@ sub _send {
         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 {
+    unless (@$rq) {
         set_event_handler ($sock, write => undef);
 		if (exists $conn->{close_on_empty}) {
 			&{$conn->{eproc}}($conn, undef) if exists $conn->{eproc};
@@ -334,16 +379,43 @@ sub new_server {
 	my $self = $pkg->new($login_proc);
 	
     $self->{sock} = IO::Socket::INET->new (
-                                          LocalAddr => $my_host,
-                                          LocalPort => $my_port,
+                                          LocalAddr => "$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 }  );
 	return $self;
 }
 
+
+sub nolinger
+{
+	my $conn = shift;
+
+	if (isdbg('sock')) {
+		my ($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: $n");
+	}
+
+	setsockopt($conn->{sock}, SOL_SOCKET, SO_LINGER, pack("ll", 0, 0)) or confess "setsockopt linger: $!";
+	setsockopt($conn->{sock}, SOL_SOCKET, SO_KEEPALIVE, 1) or confess "setsockopt keepalive: $!";
+	unless ($main::is_win) {
+		setsockopt($conn->{sock}, IPPROTO_TCP, TCP_NODELAY, 1) or confess "setsockopt: $!";
+	} 
+	$conn->{sock}->autoflush(0);
+	
+	if (isdbg('sock')) {
+		my ($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;
@@ -376,11 +448,29 @@ sub _rcv {                     # Complement to _send
 	$bytes_read = sysread ($sock, $msg, 1024, 0);
 	if (defined ($bytes_read)) {
 		if ($bytes_read > 0) {
-			$conn->{msg} .= $msg;
 			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;
+				}
+			} else {
+				$conn->{msg} .= $msg;
+			}
 		} 
 	} else {
 		if (_err_will_block($!)) {
@@ -395,7 +485,9 @@ FINISH:
 		&{$conn->{eproc}}($conn, $!) if exists $conn->{eproc};
 		$conn->disconnect;
     } else {
-		$conn->dequeue if exists $conn->{msg};
+		unless ($conn->{disable_read}) {
+			$conn->dequeue if exists $conn->{msg};
+		}
 	}
 }
 
@@ -406,6 +498,7 @@ sub new_client {
 		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';
@@ -422,7 +515,7 @@ sub new_client {
 			$conn->disconnect();
 		}
 	} else {
-		dbg('err', "Msg: error on accept ($!)");
+		dbg("Msg: error on accept ($!)") if isdbg('err');
 	}
 }
 
@@ -436,11 +529,18 @@ sub close_server
 # close all clients (this is for forking really)
 sub close_all_clients
 {
-	for (values %conns) {
-		$_->disconnect;
+	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
@@ -524,7 +624,7 @@ sub DESTROY
 	my $call = $conn->{call} || 'unallocated';
 	my $host = $conn->{peerhost} || '';
 	my $port = $conn->{peerport} || '';
-	dbg('connll', "Connection $conn->{cnum} $call [$host $port] being destroyed");
+	dbg("Connection $conn->{cnum} $call [$host $port] being destroyed") if isdbg('connll');
 	$noconns--;
 }