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#!/usr/bin/perl -w |
#!/usr/bin/perl -w |
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############################################################################### |
############################################################################### |
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# Meteor |
# Meteor |
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# An HTTP server for the 2.0 web |
# An HTTP server for the 2.0 web |
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# Copyright (c) 2006 contributing authors |
# Copyright (c) 2006 contributing authors |
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# |
# |
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# Subscriber.pm |
# Subscriber.pm |
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# |
# |
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# Description: |
# Description: |
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# A Meteor Subscriber |
# A Meteor Subscriber |
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# |
# |
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############################################################################### |
############################################################################### |
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# |
# |
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# This program is free software; you can redistribute it and/or modify it |
# This program is free software; you can redistribute it and/or modify it |
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# under the terms of the GNU General Public License as published by the Free |
# under the terms of the GNU General Public License as published by the Free |
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# Software Foundation; either version 2 of the License, or (at your option) |
# Software Foundation; either version 2 of the License, or (at your option) |
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# any later version. |
# any later version. |
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# |
# |
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# This program is distributed in the hope that it will be useful, but WITHOUT |
# This program is distributed in the hope that it will be useful, but WITHOUT |
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| 22 |
# more details. |
# more details. |
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# |
# |
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# You should have received a copy of the GNU General Public License along |
# You should have received a copy of the GNU General Public License along |
| 25 |
# with this program; if not, write to the Free Software Foundation, Inc., |
# with this program; if not, write to the Free Software Foundation, Inc., |
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# 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
# 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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# |
# |
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# For more information visit www.meteorserver.org |
# For more information visit www.meteorserver.org |
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# |
# |
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############################################################################### |
############################################################################### |
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|
|
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package Meteor::Subscriber; |
package Meteor::Subscriber; |
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############################################################################### |
############################################################################### |
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# Configuration |
# Configuration |
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############################################################################### |
############################################################################### |
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|
|
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use strict; |
use strict; |
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|
|
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use Meteor::Connection; |
use Meteor::Connection; |
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use Meteor::Channel; |
use Meteor::Channel; |
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use Meteor::Document; |
use Meteor::Document; |
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|
|
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@Meteor::Subscriber::ISA=qw(Meteor::Connection); |
@Meteor::Subscriber::ISA=qw(Meteor::Connection); |
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|
|
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our %PersistentConnections=(); |
our %PersistentConnections=(); |
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|
our $NumAcceptedConnections=0; |
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############################################################################### |
|
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# Factory methods |
|
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############################################################################### |
############################################################################### |
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sub newFromServer { |
# Factory methods |
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my $class=shift; |
############################################################################### |
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|
sub newFromServer { |
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my $self=$class->SUPER::newFromServer(shift); |
my $class=shift; |
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|
|
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$self->{'headerBuffer'}=''; |
my $self=$class->SUPER::newFromServer(shift); |
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$self->{'MessageCount'}=0; |
|
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$self->{'MaxMessageCount'}=0; |
$self->{'headerBuffer'}=''; |
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|
$self->{'messageCount'}=0; |
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$self->{'ConnectionStart'}=time; |
|
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my $maxTime=$::CONF{'MaxTime'}; |
my $maxTime=$::CONF{'MaxTime'}; |
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if($maxTime>0) |
if($maxTime>0) |
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{ |
{ |
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$self->{'ConnectionTimeLimit'}=$self->{'ConnectionStart'}+$maxTime; |
$self->{'connectionTimeLimit'}=$self->{'connectionStart'}+$maxTime; |
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} |
} |
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|
|
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$self; |
$::Statistics->{'current_subscribers'}++; |
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} |
$::Statistics->{'subscriber_connections_accepted'}++; |
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|
|
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############################################################################### |
$self; |
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# Class methods |
} |
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############################################################################### |
|
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sub deleteSubscriberWithID { |
############################################################################### |
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my $class=shift; |
# Class methods |
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my $id=shift; |
############################################################################### |
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|
sub deleteSubscriberWithID { |
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if(exists($PersistentConnections{$id})) |
my $class=shift; |
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{ |
my $id=shift; |
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$PersistentConnections{$id}->close(1); |
|
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} |
if(exists($PersistentConnections{$id})) |
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} |
{ |
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|
$PersistentConnections{$id}->close(0,'newSubscriberWithSameID'); |
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sub pingPersistentConnections { |
} |
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my $class=shift; |
} |
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|
|
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my $msg=$::CONF{'PingMessage'}; |
sub subscriberExists { |
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my @cons=values %PersistentConnections; |
my $class=shift; |
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|
my $id=shift; |
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map { $_->write($msg) } @cons; |
|
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} |
return exists($PersistentConnections{$id}); |
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|
} |
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sub checkPersistentConnectionsForMaxTime { |
|
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my $class=shift; |
sub pingPersistentConnections { |
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|
my $class=shift; |
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my $time=time; |
|
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my @cons=values %PersistentConnections; |
my @cons=values %PersistentConnections; |
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|
|
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map { $_->checkForMaxTime($time) } @cons; |
map { $_->ping() } @cons; |
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} |
} |
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|
|
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############################################################################### |
sub checkPersistentConnectionsForMaxTime { |
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# Instance methods |
my $class=shift; |
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############################################################################### |
|
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sub processLine { |
my $time=time; |
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my $self=shift; |
my @cons=values %PersistentConnections; |
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my $line=shift; |
|
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|
map { $_->checkForMaxTime($time) } @cons; |
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# Once the header was processed we ignore any input |
} |
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return unless(exists($self->{'headerBuffer'})); |
|
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|
sub numSubscribers { |
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if($line ne '') |
|
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{ |
return scalar(keys %PersistentConnections); |
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# |
} |
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# Accumulate header |
|
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# |
sub listSubscribers { |
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$self->{'headerBuffer'}.="$line\n"; |
my $class=shift; |
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} |
my $list=''; |
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else |
foreach my $subscriber (keys %PersistentConnections) |
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{ |
{ |
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# |
my $sub = $PersistentConnections{$subscriber}; |
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# Empty line signals end of header. |
$list .= $subscriber.' '.$sub->{'ip'}.' '.$sub->{'connectionStart'}.' '.$sub->{'connectionTimeLimit'}.' '.($sub->{'connectionTimeLimit'}-time).' '.$sub->{'messageCount'}.' "'.$sub->{'useragent'}."\"$::CRLF"; |
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# Analyze header, register with appropiate channel |
} |
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# and send pending messages. |
$list; |
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# |
} |
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# GET $::CONF{'SubscriberDynamicPageAddress'}?channel=ml123&restartfrom=1 HTTP/1.1 |
|
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# |
############################################################################### |
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# Find the 'GET' line |
# Instance methods |
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# |
############################################################################### |
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if($self->{'headerBuffer'}=~/GET\s+$::CONF{'SubscriberDynamicPageAddress'}\?(\S+)/) |
sub processLine { |
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{ |
my $self=shift; |
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my @formData=split('&',$1); |
my $line=shift; |
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my $channelName=undef; |
|
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my $startIndex=undef; |
# Once the header was processed we ignore any input - Meteor does not accept or process request bodies |
| 133 |
my $backtrack=undef; |
return unless(exists($self->{'headerBuffer'})); |
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my $persist=1; |
|
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my $subscriberID=undef; |
if($line ne '') |
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foreach my $formElement (@formData) |
{ |
| 137 |
{ |
# |
| 138 |
if($formElement=~/^channel=(.+)$/) |
# Accumulate header |
| 139 |
{ |
# |
| 140 |
$channelName=$1; |
$self->{'headerBuffer'}.="$line\n"; |
| 141 |
} |
} |
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elsif($formElement=~/^restartfrom=(\d*)$/) |
else |
| 143 |
{ |
{ |
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$startIndex=$1; |
# |
| 145 |
$startIndex='' unless(defined($startIndex)); |
# Empty line signals end of header. |
| 146 |
} |
# Analyze header, register with appropiate channel |
| 147 |
elsif($formElement=~/^backtrack=(\d+)$/) |
# and send pending messages. |
| 148 |
{ |
# |
| 149 |
$backtrack=$1; |
# GET $::CONF{'SubscriberDynamicPageAddress'}/hostid/streamtype/channeldefs HTTP/1.1 |
| 150 |
$backtrack=0 unless(defined($backtrack)); |
# |
| 151 |
} |
# Find the 'GET' line |
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elsif($formElement=~/^persist=(?i)(yes|true|1|no|false|0)$/) |
# |
| 153 |
{ |
if($self->{'headerBuffer'}=~/GET\s+$::CONF{'SubscriberDynamicPageAddress'}\/([0-9a-z]+)\/([0-9a-z]+)\/([a-z0-9_\-\%\.\/]+).*?/i) |
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$persist=0 if($1=~/(no|false|0)/i); |
{ |
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} |
$self->{'subscriberID'}=$1; |
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elsif($formElement=~/^id=(.+)$/) |
$self->{'mode'}=$2; |
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{ |
my $persist=$self->getConf('Persist'); |
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$subscriberID=$1; |
my $maxTime=$self->getConf('MaxTime'); |
| 159 |
} |
$self->{'connectionTimeLimit'} = ($self->{'connectionStart'}+$maxTime) if ($maxTime>0); |
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elsif($formElement=~/^maxmessages=(\d+)$/i) |
|
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{ |
my @channelData=split('/',$3); |
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$self->{'MaxMessageCount'}=$1; |
my $channels={}; |
| 163 |
} |
my $channelName; |
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elsif($formElement=~/^template=(\d+)$/i) |
my $offset; |
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{ |
foreach my $chandef (@channelData) { |
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$self->{'HeaderTemplateNumber'}=$1; |
if($chandef=~/^([a-z0-9_\-\%]+)(.(r|b|h)([0-9]*))?$/i) { |
| 167 |
} |
$channelName = $1; |
| 168 |
elsif($formElement=~/^maxtime=(\d+)$/i) |
$channels->{$channelName}->{'startIndex'} = undef; |
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{ |
if ($3) { |
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my $clientRequest=$1; |
$offset = $4; |
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my $serverDefault=$::CONF{'MaxTime'}; |
if ($3 eq 'r') { $channels->{$channelName}->{'startIndex'} = $offset; } |
| 172 |
|
if ($3 eq 'b') { $channels->{$channelName}->{'startIndex'} = -$offset; } |
| 173 |
if($serverDefault==0 || $serverDefault>$clientRequest) |
if ($3 eq 'h') { $channels->{$channelName}->{'startIndex'} = 0; } |
| 174 |
{ |
} |
| 175 |
$self->{'ConnectionTimeLimit'}=$self->{'ConnectionStart'}+$clientRequest; |
} |
| 176 |
} |
} |
| 177 |
} |
$self->{'useragent'} = ($self->{'headerBuffer'}=~/User-Agent: (.+)/i) ? $1 : "-"; |
| 178 |
} |
|
| 179 |
|
if ($persist) { |
| 180 |
delete($self->{'headerBuffer'}); |
# New persistent connection: kill any existing connection with same ID |
| 181 |
|
$self->deleteSubscriberWithID($self->{'subscriberID'}); |
| 182 |
if(defined($startIndex) && defined($backtrack)) |
# Add new persistent connection to collection |
| 183 |
{ |
$PersistentConnections{$self->{'subscriberID'}}=$self; |
| 184 |
$self->emitHeader("404 Cannot use both 'restartfrom' and 'backtrack'"); |
} else { |
| 185 |
$self->close(); |
$::Pollers->{$self->{'subscriberID'}} = time; |
| 186 |
|
} |
| 187 |
return; |
|
| 188 |
} |
if(scalar(keys %{$channels})) { |
| 189 |
|
|
| 190 |
if(defined($subscriberID) && $persist) |
$self->{'channelinfo'} = ''; |
| 191 |
{ |
my $citemplate = $self->getConf('ChannelInfoTemplate'); |
| 192 |
$self->{'subscriberID'}=$subscriberID; |
foreach $channelName (keys %{$channels}) { |
| 193 |
$self->deleteSubscriberWithID($subscriberID); |
my $channel=Meteor::Channel->channelWithName($channelName); |
| 194 |
$PersistentConnections{$subscriberID}=$self; |
$self->{'channels'}->{$channelName}=$channel; |
| 195 |
} |
if (defined($self->{'channels'}->{$channelName}->{'startIndex'}) && $self->{'channels'}->{$channelName}->{'startIndex'} > 0) { |
| 196 |
|
$self->{'channelinfo'} .= $channel->descriptionWithTemplate($citemplate); |
| 197 |
if(defined($channelName)) |
} |
| 198 |
{ |
} |
| 199 |
$self->emitOKHeader(); |
$self->emitOKHeader(); |
| 200 |
|
foreach $channelName (keys %{$channels}) { |
| 201 |
$startIndex=-$backtrack if(!defined($startIndex) && defined($backtrack)); |
my $startIndex=$channels->{$channelName}->{'startIndex'}; |
| 202 |
|
$self->{'channels'}->{$channelName}->addSubscriber($self,$startIndex,$persist,$self->{'mode'},$self->{'useragent'}); |
| 203 |
$self->setChannelName($channelName,$startIndex,$persist); |
} |
| 204 |
|
delete ($self->{'channels'}) unless($persist); |
| 205 |
$self->close(1) unless($persist); |
$self->close(1, 'responseComplete') unless($persist); |
| 206 |
|
$self->close(1, 'closedOnEvent') unless($self->{'messageCount'} == 0); |
| 207 |
return; |
delete($self->{'headerBuffer'}); |
| 208 |
} |
return; |
| 209 |
} |
} |
| 210 |
elsif($self->{'headerBuffer'}=~/GET\s+([^\s\?]+)/) |
} |
| 211 |
{ |
elsif($self->{'headerBuffer'}=~/GET\s+\/disconnect\/(\S+)/) |
| 212 |
Meteor::Document->serveFileToClient($1,$self); |
{ |
| 213 |
|
$self->deleteSubscriberWithID($1); |
| 214 |
$self->close(1); |
$self->emitOKHeader(); |
| 215 |
|
$self->close(1, 'disconnectRequested'); |
| 216 |
return; |
return; |
| 217 |
} |
} |
| 218 |
|
elsif($self->{'headerBuffer'}=~/GET\s+([^\s\?]+)/) |
| 219 |
# |
{ |
| 220 |
# If we fall through we did not understand the request |
Meteor::Document->serveFileToClient($1,$self); |
| 221 |
# |
$self->close(1, 'responseComplete'); |
| 222 |
$self->emitErrorHeader(); |
return; |
| 223 |
} |
} |
| 224 |
} |
|
| 225 |
|
# |
| 226 |
sub setChannelName { |
# If we fall through we did not understand the request |
| 227 |
my $self=shift; |
# |
| 228 |
my $channelName=shift; |
$self->emitErrorHeader(); |
| 229 |
my $startIndex=shift; |
} |
| 230 |
my $persist=shift; |
} |
| 231 |
|
|
| 232 |
my $channel=Meteor::Channel->channelWithName($channelName); |
sub emitOKHeader { |
| 233 |
$self->{'channel'}=$channel if($persist); |
my $self=shift; |
| 234 |
|
|
| 235 |
$channel->addSubscriber($self,$startIndex,$persist); |
$self->emitHeader('200 OK'); |
| 236 |
} |
} |
| 237 |
|
|
| 238 |
sub emitOKHeader { |
sub emitErrorHeader { |
| 239 |
my $self=shift; |
my $self=shift; |
| 240 |
|
|
| 241 |
$self->emitHeader('200 OK'); |
$self->emitHeader('404 Not Found'); |
| 242 |
} |
$::Statistics->{'errors_served'}++; |
| 243 |
|
|
| 244 |
sub emitErrorHeader { |
# close up shop here! |
| 245 |
my $self=shift; |
$self->close(0, 'error'); |
| 246 |
|
} |
| 247 |
$self->emitHeader('404 Not Found'); |
|
| 248 |
|
sub emitHeader { |
| 249 |
# close up shop here! |
my $self=shift; |
| 250 |
$self->close(); |
my $status=shift; |
| 251 |
} |
|
| 252 |
|
my $header=$self->getConf('HeaderTemplate'); |
| 253 |
sub emitHeader { |
|
| 254 |
my $self=shift; |
$header=~s/~([^~]*)~/ |
| 255 |
my $status=shift; |
if(!defined($1) || $1 eq '') { |
| 256 |
|
'~'; |
| 257 |
my $header=undef; |
} elsif($1 eq 'server') { |
| 258 |
if(exists($self->{'HeaderTemplateNumber'})) |
$::PGM; |
| 259 |
{ |
} elsif($1 eq 'status') { |
| 260 |
my $hn='HeaderTemplate'.$self->{'HeaderTemplateNumber'}; |
$status; |
| 261 |
|
} elsif($1 eq 'servertime') { |
| 262 |
$header=$::CONF{$hn}; |
time; |
| 263 |
} |
} elsif($1 eq 'channelinfo') { |
| 264 |
$header=$::CONF{'HeaderTemplate'} unless(defined($header)); |
$self->{'channelinfo'}; |
| 265 |
|
} else { |
| 266 |
$header=~s/~([^~]+)~/ |
''; |
| 267 |
if(!defined($1) || $1 eq '') |
} |
| 268 |
{ |
/gex; |
| 269 |
'~'; |
|
| 270 |
} |
$self->write($header); |
| 271 |
elsif($1 eq 'server') |
} |
| 272 |
{ |
|
| 273 |
$::PGM; |
sub sendMessages { |
| 274 |
} |
my $self=shift; |
| 275 |
elsif($1 eq 'status') |
|
| 276 |
{ |
my $numMessages=0; |
| 277 |
$status; |
my $msgTemplate=$self->getConf('MessageTemplate'); |
| 278 |
} |
my $msgData=''; |
| 279 |
elsif($1 eq 'servertime') |
|
| 280 |
{ |
foreach my $message (@_) |
| 281 |
time; |
{ |
| 282 |
} |
$msgData.=$message->messageWithTemplate($msgTemplate); |
| 283 |
else |
$numMessages++; |
| 284 |
{ |
} |
| 285 |
''; |
|
| 286 |
} |
return if($numMessages<1); |
| 287 |
/gex; |
|
| 288 |
|
$self->write($msgData); |
| 289 |
$self->write($header); |
|
| 290 |
} |
$::Statistics->{'messages_served'}+=$numMessages; |
| 291 |
|
|
| 292 |
sub sendMessage { |
my $msgCount=$self->{'messageCount'}; |
| 293 |
my $self=shift; |
$msgCount+=$numMessages; |
| 294 |
my $msg=shift; |
$self->{'messageCount'}=$msgCount; |
| 295 |
|
|
| 296 |
$self->write($msg); |
# If long polling, close connection, as a message has now been sent. |
| 297 |
|
# Don't close if still processing the header (we may be sending a backlog from multiple channels) |
| 298 |
my $msgCount=++$self->{'MessageCount'}; |
if($self->getConf('CloseOnEvent') && !exists($self->{'headerBuffer'})) { |
| 299 |
|
$self->close(1, 'closedOnEvent'); |
| 300 |
my $maxMsg=$::CONF{'MaxMessages'}; |
} |
| 301 |
if(defined($maxMsg) && $maxMsg>0 && $msgCount>=$maxMsg) |
} |
| 302 |
{ |
|
| 303 |
$self->close(1); |
sub ping { |
| 304 |
} |
my $self=shift; |
| 305 |
|
my $msg=$self->getConf('PingMessage'); |
| 306 |
if($self->{'MaxMessageCount'}>0 && $msgCount>=$self->{'MaxMessageCount'}) |
|
| 307 |
{ |
$self->write($msg); |
| 308 |
$self->close(1); |
} |
| 309 |
} |
|
| 310 |
} |
sub closeChannel { |
| 311 |
|
my $self=shift; |
| 312 |
sub close { |
my $channelName=shift; |
| 313 |
my $self=shift; |
|
| 314 |
my $noShutdownMsg=shift; |
return unless(exists($self->{'channels'}->{$channelName})); |
| 315 |
|
|
| 316 |
$self->{'channel'}->removeSubscriber($self) if($self->{'channel'}); |
my $channel=$self->{'channels'}->{$channelName}; |
| 317 |
delete($self->{'channel'}); |
$channel->removeSubscriber($self,'channelClose'); |
| 318 |
|
|
| 319 |
if(exists($self->{'subscriberID'})) |
delete($self->{'channels'}->{$channelName}); |
| 320 |
{ |
|
| 321 |
delete($PersistentConnections{$self->{'subscriberID'}}); |
$self->close(0,'channelClose') if(scalar(keys %{$self->{'channels'}})==0); |
| 322 |
} |
} |
| 323 |
|
|
| 324 |
# |
sub close { |
| 325 |
# Send shutdown message unless remote closed or |
my $self=shift; |
| 326 |
# connection not yet established |
my $noShutdownMsg=shift; |
| 327 |
# |
my $reason=shift; |
| 328 |
unless($noShutdownMsg || $self->{'remoteClosed'} || exists($self->{'headerBuffer'})) |
|
| 329 |
{ |
foreach my $channelName (keys %{$self->{'channels'}}) |
| 330 |
my $msg=$::CONF{'SubscriberShutdownMsg'}; |
{ |
| 331 |
if(defined($msg) && $msg ne '') |
my $channel=$self->{'channels'}->{$channelName}; |
| 332 |
{ |
$channel->removeSubscriber($self,$reason); |
| 333 |
$self->write($msg); |
} |
| 334 |
} |
delete($self->{'channels'}); |
| 335 |
} |
|
| 336 |
|
# If this connection is in the PersistentConnections array, delete it, then anonymise |
| 337 |
$self->SUPER::close(); |
# it so that if we have to wait for the write buffer to empty before close, it's only |
| 338 |
} |
# removed once. |
| 339 |
|
if(exists($self->{'subscriberID'})) { |
| 340 |
sub checkForMaxTime { |
delete($PersistentConnections{$self->{'subscriberID'}}); |
| 341 |
my $self=shift; |
delete($self->{'subscriberID'}); |
| 342 |
my $time=shift; |
} |
| 343 |
|
|
| 344 |
$self->close(1) if(exists($self->{'ConnectionTimeLimit'}) && $self->{'ConnectionTimeLimit'}<$time); |
# Send shutdown message unless remote closed or |
| 345 |
} |
# connection not yet established |
| 346 |
|
unless($noShutdownMsg || $self->{'remoteClosed'} || exists($self->{'headerBuffer'})) |
| 347 |
1; |
{ |
| 348 |
|
my $msg=$self->getConf('SubscriberShutdownMsg'); |
| 349 |
|
if(defined($msg) && $msg ne '') |
| 350 |
|
{ |
| 351 |
|
$self->write($msg); |
| 352 |
|
} |
| 353 |
|
} |
| 354 |
|
|
| 355 |
|
my $fmsg=$self->getConf('FooterTemplate'); |
| 356 |
|
if(defined($fmsg) && $fmsg ne '') |
| 357 |
|
{ |
| 358 |
|
$self->write($fmsg); |
| 359 |
|
} |
| 360 |
|
|
| 361 |
|
$self->SUPER::close(); |
| 362 |
|
} |
| 363 |
|
|
| 364 |
|
sub didClose { |
| 365 |
|
|
| 366 |
|
$::Statistics->{'current_subscribers'}--; |
| 367 |
|
} |
| 368 |
|
|
| 369 |
|
sub checkForMaxTime { |
| 370 |
|
my $self=shift; |
| 371 |
|
my $time=shift; |
| 372 |
|
|
| 373 |
|
$self->close(1,'maxTime') if(exists($self->{'connectionTimeLimit'}) && $self->{'connectionTimeLimit'}<$time); |
| 374 |
|
} |
| 375 |
|
|
| 376 |
|
sub getConf { |
| 377 |
|
my $self=shift; |
| 378 |
|
my $key=shift; |
| 379 |
|
|
| 380 |
|
if(exists($self->{'mode'}) && $self->{'mode'} ne '') |
| 381 |
|
{ |
| 382 |
|
my $k=$key.$self->{'mode'}; |
| 383 |
|
|
| 384 |
|
if(exists($::CONF{$k})) { |
| 385 |
|
return $::CONF{$k}; |
| 386 |
|
} |
| 387 |
|
} |
| 388 |
|
|
| 389 |
|
$::CONF{$key}; |
| 390 |
|
} |
| 391 |
|
|
| 392 |
|
1; |
| 393 |
############################################################################EOF |
############################################################################EOF |
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