Net-IRC3/samples/JSONConnection.pm

package SOMEConnection;
use strict;
use Socket;
use AnyEvent;
use IO::Socket::INET;

sub new {
   my $this = shift;
   my $class = ref($this) || $this;
   my $self = {@_};
   bless $self, $class;
   return $self;
}

sub client_connect {
   my ($self, $lid) = @_;
}

sub client_disconnect {
   my ($self, $lid) = @_;
}

sub start_listener {
   my ($self) = @_;

   my $sock = IO::Socket::INET->new(
         Listen    => 5,
         ReuseAddr => 1,
         Reuse     => 1,
         LocalPort => 1236,
         Proto     => 'tcp'
   );

   $sock or die "Couldn't create listener: $!";

   $self->{listener} =
      AnyEvent->io (poll => 'r', fh => $sock, cb => sub {
         my $cl = $sock->accept ()
            or die "couldn't accept client: $!";
         binmode $cl;
         $cl->autoflush (1);
         $self->handle_client ($cl);
      });
}

sub write_data {
   my ($self, $lid, $data) = @_;
   return unless $self->{$lid . '_r'};

   my $cl = $self->{$lid}->{socket};
   $self->{$lid}->{write_buffer} .= $data;

   unless ($self->{$lid . '_w'}) {
      $self->{$lid . '_w'} =
         AnyEvent->io (poll => 'w', fh => $cl, cb => sub {
            if (my $data = $self->{$lid}->{write_buffer}) {
               my $len = syswrite $cl, $data;
               unless ($len) {
                  if (not defined $len) {
                     warn "error when writing data on $lid: $!";
                     return;
                  } else {
                     delete $self->{$lid . '_w'};
                  }
               }

               if ($len == length $self->{$lid}->{write_buffer}) {
                  delete $self->{$lid . '_w'};
               }

               $self->{$lid}->{write_buffer} = substr $self->{$lid}->{write_buffer}, $len;
            }
         });
   }
}

sub handle_client {
   my ($self, $cl) = @_;
   my ($chost, $cport) = ($cl->peerhost (), $cl->peerport ());
   my $lid = "$chost:$cport";

   $self->{$lid}->{socket} = $cl;

   $self->{$lid . '_r'} =
      AnyEvent->io (poll => 'r', fh => $cl, cb => sub {
         my $res = sysread $cl, my $data, 1024;
         if ($res) {
            $self->{$lid}->{read_buffer} .= $data;
            $self->handle_data ($lid, \$self->{$lid}->{read_buffer});
         } else {
            if (not defined $res) {
               warn "error when receiving data on $lid: $!";
            } else {
               warn "got eof on $lid: $!";
            }
            $self->close_client ($lid);
         }
      });

   $self->client_connect ($lid);
}

sub handle_data {
   my ($self, $lid, $buf) = @_;
   die "implement";
}

sub close_client {
   my ($self, $lid) = @_;
   eval { delete $self->{$lid}->{socket} };
   delete $self->{$lid . '_r'};
   delete $self->{$lid . '_w'};
   delete $self->{$lid};
   $self->client_disconnect ($lid);
}

package JSONConnection;
use strict;
our @ISA = qw/SOMEConnection/;
use JSON::Syck;

our %CLIENTS;

sub client_connect {
   my ($self, $lid) = @_;
   $CLIENTS{$lid} = 1;
   $self->{connect_cb}->($self, $lid);
}

sub client_disconnect {
   my ($self, $lid) = @_;
   delete $CLIENTS{$lid};
}

sub broadcast {
   my ($self, $data) = @_;
   for (keys %CLIENTS) {
      $self->send_data ($_, $data);
   }
}

sub send_data {
   my ($self, $lid, $data) = @_;

   my $dump = JSON::Syck::Dump ($data);
   $self->write_data ($lid, (length $dump) . " " . $dump . "\015\012");
}

sub handle_data {
   my ($self, $lid, $buf) = @_;

   while ($$buf =~ m/^(\s*(\d+) )(.*)$/s) {
      my ($prefix, $len, $rembuf) = ($1, $2, $3);
      if ((length $rembuf) >= $len) {
         my $data = substr $rembuf, 0, $len;
         substr $$buf, 0, (length $prefix) + (length $data), '';
         $self->{packet_cb}->($self, $lid, JSON::Syck::Load ($data));
      } else {
         return
      }
   }
}

package JSONClientConnection;
use strict;
use JSON::Syck;

sub new {
   my $this = shift;
   my $class = ref($this) || $this;
   my $self = { @_, disconnect_cb => sub {} };
   bless $self, $class;
   return $self;
}

sub connect {
   my ($self, $host, $port) = @_;

   $self->{socket}
      and return;

   my $sock = IO::Socket::INET->new (
      PeerAddr => $host,
      PeerPort => $port,
      Proto    => 'tcp',
      Blocking => 0
   );
   die "couldn't connect to server '$host:$port': $!\n" unless $sock->connected;

   $self->{socket} = $sock;
   $self->{host}   = $host;
   $self->{port}   = $port;

   $self->{r} =
      AnyEvent->io (poll => 'r', fh => $sock, cb => sub {
         my $l = sysread $sock, my $data, 1024;

         $self->{read_buffer} .= $data;
         $self->handle_data (\$self->{read_buffer});

         unless ($l) {
            if (defined $l) {
               $self->{disconnect_cb}->("EOF from json server '$host:$port'");
               return;

            } else {
               $self->{disconnect_cb}->("Error while reading from json server '$host:$port': $!");
               return;
            }
         }
      });
}

sub handle_data {
   my ($self, $buf) = @_;

   while ($$buf =~ m/^(\s*(\d+) )(.*)$/s) {
      my ($prefix, $len, $rembuf) = ($1, $2, $3);
      if ((length $rembuf) >= $len) {
         my $data = substr $rembuf, 0, $len;
         substr $$buf, 0, (length $prefix) + (length $data), '';
         $self->{packet_cb}->($self, JSON::Syck::Load ($data));
      } else {
         return
      }
   }
}

sub send_data {
   my ($self, $data) = @_;
   my $dump = JSON::Syck::Dump ($data);
   $self->write_data ((length $dump) . " " . $dump . "\015\012");
}

sub write_data {
   my ($self, $data) = @_;
   return unless $self->{r};

   my $cl = $self->{socket};
   $self->{write_buffer} .= $data;

   unless ($self->{w}) {
      $self->{w} =
         AnyEvent->io (poll => 'w', fh => $cl, cb => sub {
            if (my $data = $self->{write_buffer}) {
               my $len = syswrite $cl, $data;
               unless ($len) {
                  if (not defined $len) {
                     warn "error when writing data on $self->{host}:$self->{port}: $!";
                     return;
                  } else {
                     delete $self->{w};
                  }
               }

               if ($len == length $self->{write_buffer}) {
                  delete $self->{w};
               }

               $self->{write_buffer} = substr $self->{write_buffer}, $len;
            }
         });
   }
}

1;
Revision:	1.2
Committed:	Mon Dec 25 19:39:41 2006 UTC (19 years, 9 months ago) by elmex
Branch:	MAIN
Changes since 1.1:	+11 -6 lines
Log Message:	further improvements on the json irc client
#	User	Rev	Content
1	elmex	1.1	package SOMEConnection;
2			use strict;
3			use Socket;
4			use AnyEvent;
5			use IO::Socket::INET;
6
7			sub new {
8			my $this = shift;
9			my $class = ref($this) \|\| $this;
10			my $self = {@_};
11			bless $self, $class;
12			return $self;
13			}
14
15			sub client_connect {
16			my ($self, $lid) = @_;
17			}
18
19			sub client_disconnect {
20			my ($self, $lid) = @_;
21			}
22
23			sub start_listener {
24			my ($self) = @_;
25
26			my $sock = IO::Socket::INET->new(
27			Listen => 5,
28			ReuseAddr => 1,
29			Reuse => 1,
30			LocalPort => 1236,
31			Proto => 'tcp'
32			);
33
34			$sock or die "Couldn't create listener: $!";
35
36			$self->{listener} =
37			AnyEvent->io (poll => 'r', fh => $sock, cb => sub {
38			my $cl = $sock->accept ()
39			or die "couldn't accept client: $!";
40			binmode $cl;
41			$cl->autoflush (1);
42			$self->handle_client ($cl);
43			});
44			}
45
46			sub write_data {
47			my ($self, $lid, $data) = @_;
48			return unless $self->{$lid . '_r'};
49
50			my $cl = $self->{$lid}->{socket};
51			$self->{$lid}->{write_buffer} .= $data;
52
53			unless ($self->{$lid . '_w'}) {
54			$self->{$lid . '_w'} =
55			AnyEvent->io (poll => 'w', fh => $cl, cb => sub {
56			if (my $data = $self->{$lid}->{write_buffer}) {
57			my $len = syswrite $cl, $data;
58			unless ($len) {
59			if (not defined $len) {
60			warn "error when writing data on $lid: $!";
61			return;
62			} else {
63			delete $self->{$lid . '_w'};
64			}
65			}
66
67			if ($len == length $self->{$lid}->{write_buffer}) {
68			delete $self->{$lid . '_w'};
69			}
70
71			$self->{$lid}->{write_buffer} = substr $self->{$lid}->{write_buffer}, $len;
72			}
73			});
74			}
75			}
76
77			sub handle_client {
78			my ($self, $cl) = @_;
79			my ($chost, $cport) = ($cl->peerhost (), $cl->peerport ());
80			my $lid = "$chost:$cport";
81
82			$self->{$lid}->{socket} = $cl;
83
84			$self->{$lid . '_r'} =
85			AnyEvent->io (poll => 'r', fh => $cl, cb => sub {
86			my $res = sysread $cl, my $data, 1024;
87			if ($res) {
88			$self->{$lid}->{read_buffer} .= $data;
89			$self->handle_data ($lid, \$self->{$lid}->{read_buffer});
90			} else {
91			if (not defined $res) {
92			warn "error when receiving data on $lid: $!";
93			} else {
94			warn "got eof on $lid: $!";
95			}
96			$self->close_client ($lid);
97			}
98			});
99
100			$self->client_connect ($lid);
101			}
102
103			sub handle_data {
104			my ($self, $lid, $buf) = @_;
105			die "implement";
106			}
107
108			sub close_client {
109			my ($self, $lid) = @_;
110			eval { delete $self->{$lid}->{socket} };
111			delete $self->{$lid . '_r'};
112			delete $self->{$lid . '_w'};
113			delete $self->{$lid};
114			$self->client_disconnect ($lid);
115			}
116
117			package JSONConnection;
118			use strict;
119			our @ISA = qw/SOMEConnection/;
120			use JSON::Syck;
121
122			our %CLIENTS;
123
124			sub client_connect {
125			my ($self, $lid) = @_;
126			$CLIENTS{$lid} = 1;
127			$self->{connect_cb}->($self, $lid);
128			}
129
130			sub client_disconnect {
131			my ($self, $lid) = @_;
132			delete $CLIENTS{$lid};
133			}
134
135			sub broadcast {
136			my ($self, $data) = @_;
137			for (keys %CLIENTS) {
138			$self->send_data ($_, $data);
139			}
140			}
141
142			sub send_data {
143			my ($self, $lid, $data) = @_;
144
145			my $dump = JSON::Syck::Dump ($data);
146			$self->write_data ($lid, (length $dump) . " " . $dump . "\015\012");
147			}
148
149			sub handle_data {
150			my ($self, $lid, $buf) = @_;
151
152	elmex	1.2	while ($$buf =~ m/^(\s(\d+) )(.)$/s) {
153	elmex	1.1	my ($prefix, $len, $rembuf) = ($1, $2, $3);
154			if ((length $rembuf) >= $len) {
155			my $data = substr $rembuf, 0, $len;
156			substr $$buf, 0, (length $prefix) + (length $data), '';
157			$self->{packet_cb}->($self, $lid, JSON::Syck::Load ($data));
158	elmex	1.2	} else {
159			return
160	elmex	1.1	}
161			}
162			}
163
164			package JSONClientConnection;
165			use strict;
166			use JSON::Syck;
167
168			sub new {
169			my $this = shift;
170			my $class = ref($this) \|\| $this;
171	elmex	1.2	my $self = { @_, disconnect_cb => sub {} };
172	elmex	1.1	bless $self, $class;
173			return $self;
174			}
175
176			sub connect {
177			my ($self, $host, $port) = @_;
178
179			$self->{socket}
180			and return;
181
182			my $sock = IO::Socket::INET->new (
183			PeerAddr => $host,
184			PeerPort => $port,
185			Proto => 'tcp',
186			Blocking => 0
187	elmex	1.2	);
188			die "couldn't connect to server '$host:$port': $!\n" unless $sock->connected;
189	elmex	1.1
190			$self->{socket} = $sock;
191			$self->{host} = $host;
192			$self->{port} = $port;
193
194			$self->{r} =
195			AnyEvent->io (poll => 'r', fh => $sock, cb => sub {
196			my $l = sysread $sock, my $data, 1024;
197
198			$self->{read_buffer} .= $data;
199			$self->handle_data (\$self->{read_buffer});
200
201			unless ($l) {
202			if (defined $l) {
203	elmex	1.2	$self->{disconnect_cb}->("EOF from json server '$host:$port'");
204	elmex	1.1	return;
205
206			} else {
207	elmex	1.2	$self->{disconnect_cb}->("Error while reading from json server '$host:$port': $!");
208	elmex	1.1	return;
209			}
210			}
211			});
212			}
213
214			sub handle_data {
215			my ($self, $buf) = @_;
216
217	elmex	1.2	while ($$buf =~ m/^(\s(\d+) )(.)$/s) {
218	elmex	1.1	my ($prefix, $len, $rembuf) = ($1, $2, $3);
219			if ((length $rembuf) >= $len) {
220			my $data = substr $rembuf, 0, $len;
221			substr $$buf, 0, (length $prefix) + (length $data), '';
222			$self->{packet_cb}->($self, JSON::Syck::Load ($data));
223	elmex	1.2	} else {
224			return
225	elmex	1.1	}
226			}
227			}
228
229			sub send_data {
230			my ($self, $data) = @_;
231			my $dump = JSON::Syck::Dump ($data);
232			$self->write_data ((length $dump) . " " . $dump . "\015\012");
233			}
234
235			sub write_data {
236			my ($self, $data) = @_;
237			return unless $self->{r};
238
239			my $cl = $self->{socket};
240			$self->{write_buffer} .= $data;
241
242			unless ($self->{w}) {
243			$self->{w} =
244			AnyEvent->io (poll => 'w', fh => $cl, cb => sub {
245			if (my $data = $self->{write_buffer}) {
246			my $len = syswrite $cl, $data;
247			unless ($len) {
248			if (not defined $len) {
249			warn "error when writing data on $self->{host}:$self->{port}: $!";
250			return;
251			} else {
252			delete $self->{w};
253			}
254			}
255
256			if ($len == length $self->{write_buffer}) {
257			delete $self->{w};
258			}
259
260			$self->{write_buffer} = substr $self->{write_buffer}, $len;
261			}
262			});
263			}
264			}
265
266			1;