39 |
use Meteor::Connection; |
use Meteor::Connection; |
40 |
use Meteor::Channel; |
use Meteor::Channel; |
41 |
use Meteor::Document; |
use Meteor::Document; |
42 |
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use Meteor::Koha; |
43 |
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44 |
@Meteor::Subscriber::ISA=qw(Meteor::Connection); |
@Meteor::Subscriber::ISA=qw(Meteor::Connection); |
45 |
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46 |
our %PersistentConnections=(); |
our %PersistentConnections=(); |
47 |
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our $NumAcceptedConnections=0; |
48 |
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49 |
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50 |
############################################################################### |
############################################################################### |
51 |
# Factory methods |
# Factory methods |
56 |
my $self=$class->SUPER::newFromServer(shift); |
my $self=$class->SUPER::newFromServer(shift); |
57 |
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58 |
$self->{'headerBuffer'}=''; |
$self->{'headerBuffer'}=''; |
59 |
$self->{'MessageCount'}=0; |
$self->{'messageCount'}=0; |
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$self->{'MaxMessageCount'}=0; |
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60 |
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61 |
$self->{'ConnectionStart'}=time; |
$::Statistics->{'current_subscribers'}++; |
62 |
my $maxTime=$::CONF{'MaxTime'}; |
$::Statistics->{'subscriber_connections_accepted'}++; |
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if($maxTime>0) |
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{ |
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$self->{'ConnectionTimeLimit'}=$self->{'ConnectionStart'}+$maxTime; |
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} |
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63 |
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64 |
$self; |
$self; |
65 |
} |
} |
73 |
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74 |
if(exists($PersistentConnections{$id})) |
if(exists($PersistentConnections{$id})) |
75 |
{ |
{ |
76 |
$PersistentConnections{$id}->close(1); |
$PersistentConnections{$id}->close(0,'newSubscriberWithSameID'); |
77 |
} |
} |
78 |
} |
} |
79 |
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80 |
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sub subscriberExists { |
81 |
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my $class=shift; |
82 |
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my $id=shift; |
83 |
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84 |
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return exists($PersistentConnections{$id}); |
85 |
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} |
86 |
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87 |
sub pingPersistentConnections { |
sub pingPersistentConnections { |
88 |
my $class=shift; |
my $class=shift; |
89 |
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my $msg=$::CONF{'PingMessage'}; |
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90 |
my @cons=values %PersistentConnections; |
my @cons=values %PersistentConnections; |
91 |
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92 |
map { $_->write($msg) } @cons; |
map { $_->ping() } @cons; |
93 |
} |
} |
94 |
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95 |
sub checkPersistentConnectionsForMaxTime { |
sub checkPersistentConnectionsForMaxTime { |
101 |
map { $_->checkForMaxTime($time) } @cons; |
map { $_->checkForMaxTime($time) } @cons; |
102 |
} |
} |
103 |
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104 |
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sub numSubscribers { |
105 |
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106 |
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return scalar(keys %PersistentConnections); |
107 |
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} |
108 |
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109 |
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sub listSubscribers { |
110 |
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my $class=shift; |
111 |
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my $list=''; |
112 |
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foreach my $subscriber (keys %PersistentConnections) |
113 |
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{ |
114 |
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my $sub = $PersistentConnections{$subscriber}; |
115 |
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$list .= $subscriber.' '.$sub->{'ip'}.' '.$sub->{'connectionStart'}.' '.$sub->{'connectionTimeLimit'}.' '.($sub->{'connectionTimeLimit'}-time).' '.$sub->{'messageCount'}.' "'.$sub->{'useragent'}."\"$::CRLF"; |
116 |
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} |
117 |
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$list; |
118 |
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} |
119 |
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120 |
############################################################################### |
############################################################################### |
121 |
# Instance methods |
# Instance methods |
122 |
############################################################################### |
############################################################################### |
124 |
my $self=shift; |
my $self=shift; |
125 |
my $line=shift; |
my $line=shift; |
126 |
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|
127 |
# Once the header was processed we ignore any input |
# Once the header was processed we ignore any input - Meteor does not accept or process request bodies |
128 |
return unless(exists($self->{'headerBuffer'})); |
return unless(exists($self->{'headerBuffer'})); |
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130 |
if($line ne '') |
if($line ne '') |
141 |
# Analyze header, register with appropiate channel |
# Analyze header, register with appropiate channel |
142 |
# and send pending messages. |
# and send pending messages. |
143 |
# |
# |
144 |
# GET $::CONF{'SubscriberDynamicPageAddress'}?channel=ml123&restartfrom=1 HTTP/1.1 |
# GET $::CONF{'SubscriberDynamicPageAddress'}/hostid/streamtype/channeldefs HTTP/1.1 |
145 |
# |
# |
146 |
# Find the 'GET' line |
# Find the 'GET' line |
147 |
# |
# |
148 |
if($self->{'headerBuffer'}=~/GET\s+$::CONF{'SubscriberDynamicPageAddress'}\?(\S+)/) |
if($self->{'headerBuffer'}=~/GET\s+$::CONF{'SubscriberDynamicPageAddress'}\/([0-9a-z]+)\/([0-9a-z]+)\/([a-z0-9_\-\%\.\/]+).*?/i) |
149 |
{ |
{ |
150 |
my @formData=split('&',$1); |
$self->{'subscriberID'}=$1; |
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my $channelName=undef; |
$self->{'mode'}=$2; |
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my $startIndex=undef; |
my $persist=$self->getConf('Persist'); |
153 |
my $backtrack=undef; |
my $maxTime=$self->getConf('MaxTime'); |
154 |
my $persist=1; |
$self->{'connectionTimeLimit'} = ($self->{'connectionStart'}+$maxTime) if ($maxTime>0); |
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my $subscriberID=undef; |
|
156 |
foreach my $formElement (@formData) |
my @channelData=split('/',$3); |
157 |
{ |
my $channels={}; |
158 |
if($formElement=~/^channel=(.+)$/) |
my $channelName; |
159 |
{ |
my $offset; |
160 |
$channelName=$1; |
foreach my $chandef (@channelData) { |
161 |
} |
if($chandef=~/^([a-z0-9_\-\%]+)(.(r|b|h)([0-9]*))?$/i) { |
162 |
elsif($formElement=~/^restartfrom=(\d*)$/) |
$channelName = $1; |
163 |
{ |
$channels->{$channelName}->{'startIndex'} = undef; |
164 |
$startIndex=$1; |
if ($3) { |
165 |
$startIndex='' unless(defined($startIndex)); |
$offset = $4; |
166 |
} |
if ($3 eq 'r') { $channels->{$channelName}->{'startIndex'} = $offset; } |
167 |
elsif($formElement=~/^backtrack=(\d+)$/) |
if ($3 eq 'b') { $channels->{$channelName}->{'startIndex'} = -$offset; } |
168 |
{ |
if ($3 eq 'h') { $channels->{$channelName}->{'startIndex'} = 0; } |
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$backtrack=$1; |
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$backtrack=0 unless(defined($backtrack)); |
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} |
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elsif($formElement=~/^persist=(?i)(yes|true|1|no|false|0)$/) |
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{ |
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$persist=0 if($1=~/(no|false|0)/i); |
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} |
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elsif($formElement=~/^id=(.+)$/) |
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{ |
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$subscriberID=$1; |
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} |
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elsif($formElement=~/^maxmessages=(\d+)$/i) |
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{ |
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$self->{'MaxMessageCount'}=$1; |
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} |
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elsif($formElement=~/^template=(\d+)$/i) |
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{ |
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$self->{'HeaderTemplateNumber'}=$1; |
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} |
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elsif($formElement=~/^maxtime=(\d+)$/i) |
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{ |
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my $clientRequest=$1; |
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my $serverDefault=$::CONF{'MaxTime'}; |
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if($serverDefault==0 || $serverDefault>$clientRequest) |
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{ |
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$self->{'ConnectionTimeLimit'}=$self->{'ConnectionStart'}+$clientRequest; |
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169 |
} |
} |
170 |
} |
} |
171 |
} |
} |
172 |
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$self->{'useragent'} = ($self->{'headerBuffer'}=~/User-Agent: (.+)/i) ? $1 : "-"; |
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delete($self->{'headerBuffer'}); |
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174 |
if(defined($startIndex) && defined($backtrack)) |
if ($persist) { |
175 |
{ |
# New persistent connection: kill any existing connection with same ID |
176 |
$self->emitHeader("404 Cannot use both 'restartfrom' and 'backtrack'"); |
$self->deleteSubscriberWithID($self->{'subscriberID'}); |
177 |
$self->close(); |
# Add new persistent connection to collection |
178 |
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$PersistentConnections{$self->{'subscriberID'}}=$self; |
179 |
return; |
} else { |
180 |
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$::Pollers->{$self->{'subscriberID'}} = time; |
181 |
} |
} |
182 |
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183 |
if(defined($subscriberID) && $persist) |
if(scalar(keys %{$channels})) { |
184 |
{ |
|
185 |
$self->{'subscriberID'}=$subscriberID; |
$self->{'channelinfo'} = ''; |
186 |
$self->deleteSubscriberWithID($subscriberID); |
my $citemplate = $self->getConf('ChannelInfoTemplate'); |
187 |
$PersistentConnections{$subscriberID}=$self; |
foreach $channelName (keys %{$channels}) { |
188 |
} |
my $channel=Meteor::Channel->channelWithName($channelName); |
189 |
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$self->{'channels'}->{$channelName}=$channel; |
190 |
if(defined($channelName)) |
if (defined($self->{'channels'}->{$channelName}->{'startIndex'}) && $self->{'channels'}->{$channelName}->{'startIndex'} > 0) { |
191 |
{ |
$self->{'channelinfo'} .= $channel->descriptionWithTemplate($citemplate); |
192 |
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} |
193 |
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} |
194 |
$self->emitOKHeader(); |
$self->emitOKHeader(); |
195 |
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foreach $channelName (keys %{$channels}) { |
196 |
$startIndex=-$backtrack if(!defined($startIndex) && defined($backtrack)); |
my $startIndex=$channels->{$channelName}->{'startIndex'}; |
197 |
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$self->{'channels'}->{$channelName}->addSubscriber($self,$startIndex,$persist,$self->{'mode'},$self->{'useragent'}); |
198 |
$self->setChannelName($channelName,$startIndex,$persist); |
} |
199 |
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if (!$persist) { |
200 |
$self->close(1) unless($persist); |
delete ($self->{'channels'}); |
201 |
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$self->close(1, 'responseComplete'); |
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} |
203 |
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delete($self->{'headerBuffer'}); |
204 |
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205 |
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# If long polling, close connection immediately if any messages have been sent |
206 |
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if ($self->{'messageCount'} > 0 && $self->{'mode'} eq 'longpoll') { |
207 |
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$self->close(1, 'closedOnEvent'); |
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} |
209 |
return; |
return; |
210 |
} |
} |
211 |
} |
} |
212 |
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elsif($self->{'headerBuffer'}=~/GET\s+\/disconnect\/(\S+)/) |
213 |
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{ |
214 |
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$self->deleteSubscriberWithID($1); |
215 |
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$self->emitOKHeader(); |
216 |
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$self->close(1, 'disconnectRequested'); |
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return; |
218 |
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} |
219 |
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elsif($self->{'headerBuffer'}=~m{GET\s+/koha/(\d+)}) |
220 |
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{ |
221 |
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Meteor::Koha->item($self,$1); |
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$self->SUPER::close(); |
223 |
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return; |
224 |
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} |
225 |
elsif($self->{'headerBuffer'}=~/GET\s+([^\s\?]+)/) |
elsif($self->{'headerBuffer'}=~/GET\s+([^\s\?]+)/) |
226 |
{ |
{ |
227 |
Meteor::Document->serveFileToClient($1,$self); |
Meteor::Document->serveFileToClient($1,$self); |
228 |
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$self->SUPER::close(); |
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$self->close(1); |
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229 |
return; |
return; |
230 |
} |
} |
231 |
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236 |
} |
} |
237 |
} |
} |
238 |
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sub setChannelName { |
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my $self=shift; |
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my $channelName=shift; |
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my $startIndex=shift; |
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my $persist=shift; |
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my $channel=Meteor::Channel->channelWithName($channelName); |
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$self->{'channel'}=$channel if($persist); |
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$channel->addSubscriber($self,$startIndex,$persist); |
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} |
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239 |
sub emitOKHeader { |
sub emitOKHeader { |
240 |
my $self=shift; |
my $self=shift; |
241 |
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246 |
my $self=shift; |
my $self=shift; |
247 |
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248 |
$self->emitHeader('404 Not Found'); |
$self->emitHeader('404 Not Found'); |
249 |
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$::Statistics->{'errors_served'}++; |
250 |
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251 |
# close up shop here! |
# close up shop here! |
252 |
$self->close(); |
$self->close(0, 'error'); |
253 |
} |
} |
254 |
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255 |
sub emitHeader { |
sub emitHeader { |
256 |
my $self=shift; |
my $self=shift; |
257 |
my $status=shift; |
my $status=shift; |
258 |
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259 |
my $header=undef; |
my $header=$self->getConf('HeaderTemplate'); |
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if(exists($self->{'HeaderTemplateNumber'})) |
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{ |
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my $hn='HeaderTemplate'.$self->{'HeaderTemplateNumber'}; |
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$header=$::CONF{$hn}; |
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} |
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$header=$::CONF{'HeaderTemplate'} unless(defined($header)); |
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260 |
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261 |
$header=~s/~([^~]+)~/ |
$header=~s/~([^~]*)~/ |
262 |
if(!defined($1) || $1 eq '') |
if(!defined($1) || $1 eq '') { |
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{ |
|
263 |
'~'; |
'~'; |
264 |
} |
} elsif($1 eq 'server') { |
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elsif($1 eq 'server') |
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{ |
|
265 |
$::PGM; |
$::PGM; |
266 |
} |
} elsif($1 eq 'status') { |
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elsif($1 eq 'status') |
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{ |
|
267 |
$status; |
$status; |
268 |
} |
} elsif($1 eq 'servertime') { |
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elsif($1 eq 'servertime') |
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{ |
|
269 |
time; |
time; |
270 |
} |
} elsif($1 eq 'channelinfo') { |
271 |
else |
$self->{'channelinfo'}; |
272 |
{ |
} else { |
273 |
''; |
''; |
274 |
} |
} |
275 |
/gex; |
/gex; |
277 |
$self->write($header); |
$self->write($header); |
278 |
} |
} |
279 |
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280 |
sub sendMessage { |
sub sendMessages { |
281 |
my $self=shift; |
my $self=shift; |
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my $msg=shift; |
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$self->write($msg); |
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282 |
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|
283 |
my $msgCount=++$self->{'MessageCount'}; |
my $numMessages=0; |
284 |
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my $msgTemplate=$self->getConf('MessageTemplate'); |
285 |
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my $msgData=''; |
286 |
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|
287 |
my $maxMsg=$::CONF{'MaxMessages'}; |
foreach my $message (@_) |
|
if(defined($maxMsg) && $maxMsg>0 && $msgCount>=$maxMsg) |
|
288 |
{ |
{ |
289 |
$self->close(1); |
$msgData.=$message->messageWithTemplate($msgTemplate); |
290 |
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$numMessages++; |
291 |
} |
} |
292 |
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|
293 |
if($self->{'MaxMessageCount'}>0 && $msgCount>=$self->{'MaxMessageCount'}) |
return if($numMessages<1); |
294 |
{ |
|
295 |
$self->close(1); |
$self->write($msgData); |
296 |
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297 |
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$::Statistics->{'messages_served'}+=$numMessages; |
298 |
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299 |
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my $msgCount=$self->{'messageCount'}; |
300 |
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$msgCount+=$numMessages; |
301 |
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$self->{'messageCount'}=$msgCount; |
302 |
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303 |
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# If long polling, close connection, as a message has now been sent. |
304 |
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# Don't close if still processing the header (we may be sending a backlog from multiple channels) |
305 |
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if($self->getConf('CloseOnEvent') && !exists($self->{'headerBuffer'})) { |
306 |
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$self->close(1, 'closedOnEvent'); |
307 |
} |
} |
308 |
} |
} |
309 |
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310 |
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sub ping { |
311 |
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my $self=shift; |
312 |
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my $msg=$self->getConf('PingMessage'); |
313 |
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|
314 |
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$self->write($msg); |
315 |
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} |
316 |
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317 |
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sub closeChannel { |
318 |
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my $self=shift; |
319 |
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my $channelName=shift; |
320 |
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321 |
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return unless(exists($self->{'channels'}->{$channelName})); |
322 |
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323 |
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my $channel=$self->{'channels'}->{$channelName}; |
324 |
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$channel->removeSubscriber($self,'channelClose'); |
325 |
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326 |
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delete($self->{'channels'}->{$channelName}); |
327 |
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328 |
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$self->close(0,'channelClose') if(scalar(keys %{$self->{'channels'}})==0); |
329 |
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} |
330 |
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|
331 |
sub close { |
sub close { |
332 |
my $self=shift; |
my $self=shift; |
333 |
my $noShutdownMsg=shift; |
my $noShutdownMsg=shift; |
334 |
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my $reason=shift; |
335 |
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|
336 |
$self->{'channel'}->removeSubscriber($self) if($self->{'channel'}); |
foreach my $channelName (keys %{$self->{'channels'}}) |
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delete($self->{'channel'}); |
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if(exists($self->{'subscriberID'})) |
|
337 |
{ |
{ |
338 |
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my $channel=$self->{'channels'}->{$channelName}; |
339 |
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$channel->removeSubscriber($self,$reason); |
340 |
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} |
341 |
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delete($self->{'channels'}); |
342 |
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|
343 |
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# If this connection is in the PersistentConnections array, delete it, then anonymise |
344 |
|
# it so that if we have to wait for the write buffer to empty before close, it's only |
345 |
|
# removed once. |
346 |
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if(exists($self->{'subscriberID'})) { |
347 |
delete($PersistentConnections{$self->{'subscriberID'}}); |
delete($PersistentConnections{$self->{'subscriberID'}}); |
348 |
|
delete($self->{'subscriberID'}); |
349 |
} |
} |
350 |
|
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# |
|
351 |
# Send shutdown message unless remote closed or |
# Send shutdown message unless remote closed or |
352 |
# connection not yet established |
# connection not yet established |
|
# |
|
353 |
unless($noShutdownMsg || $self->{'remoteClosed'} || exists($self->{'headerBuffer'})) |
unless($noShutdownMsg || $self->{'remoteClosed'} || exists($self->{'headerBuffer'})) |
354 |
{ |
{ |
355 |
my $msg=$::CONF{'SubscriberShutdownMsg'}; |
my $msg=$self->getConf('SubscriberShutdownMsg'); |
356 |
if(defined($msg) && $msg ne '') |
if(defined($msg) && $msg ne '') |
357 |
{ |
{ |
358 |
$self->write($msg); |
$self->write($msg); |
359 |
} |
} |
360 |
} |
} |
361 |
|
|
362 |
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my $fmsg=$self->getConf('FooterTemplate'); |
363 |
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if(defined($fmsg) && $fmsg ne '') |
364 |
|
{ |
365 |
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$self->write($fmsg); |
366 |
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} |
367 |
|
|
368 |
$self->SUPER::close(); |
$self->SUPER::close(); |
369 |
} |
} |
370 |
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|
371 |
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sub didClose { |
372 |
|
|
373 |
|
$::Statistics->{'current_subscribers'}--; |
374 |
|
} |
375 |
|
|
376 |
sub checkForMaxTime { |
sub checkForMaxTime { |
377 |
my $self=shift; |
my $self=shift; |
378 |
my $time=shift; |
my $time=shift; |
379 |
|
|
380 |
$self->close(1) if(exists($self->{'ConnectionTimeLimit'}) && $self->{'ConnectionTimeLimit'}<$time); |
$self->close(1,'maxTime') if(exists($self->{'connectionTimeLimit'}) && $self->{'connectionTimeLimit'}<$time); |
381 |
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} |
382 |
|
|
383 |
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sub getConf { |
384 |
|
my $self=shift; |
385 |
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my $key=shift; |
386 |
|
|
387 |
|
if(exists($self->{'mode'}) && $self->{'mode'} ne '') { |
388 |
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my $k=$key.$self->{'mode'}; |
389 |
|
if(exists($::CONF{$k})) { |
390 |
|
return $::CONF{$k}; |
391 |
|
} |
392 |
|
} |
393 |
|
|
394 |
|
$::CONF{$key}; |
395 |
} |
} |
396 |
|
|
397 |
1; |
1; |
|
############################################################################EOF |
|
398 |
|
############################################################################EOF |