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+)/ || (0,0));
+$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 = ();
BEGIN {
# Checks if blocking is supported
eval {
+ local $^W;
require POSIX; POSIX->import(qw(O_NONBLOCK F_SETFL F_GETFL))
};
if ($@ || $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";
}
# 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 };';
+ 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;
my $einprogress = eval {EINPROGRESS()};
my $ewouldblock = eval {EWOULDBLOCK()};
$^W = $w;
+$cnum = 0;
+
#
#-----------------------------------------------------------------
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;
}
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
if (ref $pkg) {
$call = $pkg->{call} unless $call;
return undef unless $call;
- dbg('connll', "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};
}
blocking($sock, 0);
$conn->{blocking} = 0;
+ # does the host resolve?
my $ip = gethostbyname($to_host);
+ return undef unless $ip;
+
# my $r = $sock->connect($to_port, $ip);
my $r = connect($sock, pack_sockaddr_in($to_port, $ip));
return undef unless $r || _err_will_block($!);
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($conn->{$_})) {
}
}
- 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 {
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};
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 $conn = shift;
+
+ unless ($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;
$bytes_read = sysread ($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} .= $msg;
+ }
}
} else {
if (_err_will_block($!)) {
&{$conn->{eproc}}($conn, $!) if exists $conn->{eproc};
$conn->disconnect;
} else {
- $conn->dequeue if exists $conn->{msg};
+ unless ($conn->{disable_read}) {
+ $conn->dequeue if exists $conn->{msg};
+ }
}
}
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';
$conn->disconnect();
}
} else {
- dbg('err', "Msg: error on accept ($!)");
+ dbg("Msg: error on accept ($!)") if isdbg('err');
}
}
}
}
+sub disable_read
+{
+ my $conn = shift;
+ set_event_handler ($conn->{sock}, read => undef);
+ return $_[0] ? $conn->{disable_read} = $_[0] : $_[0];
+}
+
#
#----------------------------------------------------
# Event loop routines used by both client and server
}
sub event_loop {
- my ($pkg, $loop_count, $timeout) = @_; # event_loop(1) to process events once
+ my ($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, $eset) = IO::Select->select($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};
- }
+ ($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;
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--;
}
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