/[Frey]/branches/mojo/lib/Frey/Server.pm
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trunk/server.pl revision 2 by dpavlin, Sat Jun 28 11:49:35 2008 UTC trunk/lib/Frey/Server.pm revision 19 by dpavlin, Sun Jun 29 12:55:39 2008 UTC
# Line 1  Line 1 
1  #!/usr/bin/perl  package Frey::Server;
   
 # "HTTP Push" is not readily attainable, so instead we will simulate it using a  
 # long-pull, aka "Comet". The client browser simply opens an HTTP connection to  
 # the server and waits for a response. The server doesn't respond until there  
 # is some event (here a new message), giving the appearance of HTTP-push.  
 #  
 # Each user gets three continuations for these three cases:  
 #  
 #   - Initial load or reload of the page  
 #   - Sending a message (uses AJAX on the client)  
 #   - Recieving messages (uses COMET on the client)  
2    
3  use strict;  use strict;
4  use lib 'lib';  use warnings;
5    
6  use Continuity;  use Continuity;
7  use Continuity::REPL;  use Continuity::REPL;
8  use Data::Dump qw/dump/;  use Data::Dump qw/dump/;
9    
10  use View;  use HTML;
   
 use Template::Declare;  
 use Template::Declare::Tags; # defaults to 'HTML'  
 Template::Declare->init( roots => ['View']);  
 warn "templates = ",dump( Template::Declare->templates );  
11    
12  my @messages;    # Global (shared) list of messages  my @messages;    # Global (shared) list of messages
13  my $got_message; # Flag to indicate that there is a new message to display  my $got_message; # Flag to indicate that there is a new message to display
14    
15  use vars qw( $repl $server @messages );  use vars qw( $repl $server );
16  $repl = Continuity::REPL->new;  $repl = Continuity::REPL->new;
17    
18  $server = Continuity->new(  $server = Continuity->new(
19    port => 16001,    port => 16001,
20    path_session => 1,    path_session => 1,
21    cookie_session => 'sid',    cookie_session => 'sid',
22      callback => \&main,
23  );  );
24  $server->debug_level( 2 );  $server->debug_level( 2 );
25    
# Line 46  sub main { Line 32  sub main {
32    my ($req) = @_;    my ($req) = @_;
33        
34    my $path = $req->request->url->path;    my $path = $req->request->url->path;
35    print STDERR "Path: '$path'\n";    warn "REQUEST: $path\n";
36    
37          warn $req->request->header('User_Agent');          warn $req->request->header('User_Agent');
38  #warn dump( $req );  #warn dump( $req );
39    
40    # If this is a request for the pushtream, then give them that    # If this is a request for the pushtream, then give them that
41    if($path =~ /pushstream/) {    if($path =~ /pushstream/) {
42      pushstream($req);          pushstream($req);
43    }    }
44        
45    # If they are sending us a message, we give them a thread for that too    # If they are sending us a message, we give them a thread for that too
46    if($path =~ /sendmessage/) {    if($path =~ /sendmessage/) {
47      send_message($req);          send_message($req);
48    }    }
49    
50    # Otherwise, lets give them the base page    # Otherwise, lets give them page
51    send_base_page($req);    send_page($req);
52  }  }
53    
54  # Here we accept a connection to the browser, and keep it open. Meanwhile we  # Here we accept a connection to the browser, and keep it open. Meanwhile we
# Line 104  sub send_message { Line 90  sub send_message {
90    
91  # This isn't a pushstream, nor a new message. It is just the main page. We loop  # This isn't a pushstream, nor a new message. It is just the main page. We loop
92  # in case they ask for it multiple times :)  # in case they ask for it multiple times :)
93  sub send_base_page {  sub send_page {
94    my ($req) = @_;    my ($req) = @_;
95    while(1) {    while(1) {
96          warn "base page";          warn "param = ",dump($req->param);
97          $req->out( Template::Declare->show( 'user' ) );          $req->print( HTML->view( 'status' ) );
 =for later  
     $req->print(qq{  
       <html>  
         <head>  
           <title>Chat!</title>  
           <script src="jquery.js" type="text/javascript"></script>  
           <script src="chat-ajax-push.js" type="text/javascript"></script>  
         </head>  
         <body>  
           <form id=f>  
           <input type=text id=username name=usernamename size=10>  
           <input type=text id=message name=message size=50>  
           <input type=submit name="sendbutton" value="Send" id="sendbutton">  
           <span id=status></span>  
           </form>  
           <br>  
           <div id=log>-- no messages yet --</div>  
         </body>  
       </html>  
     });  
 =cut  
98      $req->next;      $req->next;
99            Module::Refresh->refresh;
100    }    }
101  }  }
102    
   
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