streaming content (chunked)

[John Saya]

I'm trying to create a simple server using Mojo, that can stream content back to a browser.  Basically it would be just a couple lines to send.

I figured using chunked transfer encoding would do the trick, but the client doesn't display any data until the final "0" chunk is sent.  I'm guessing there's some sort of buffering happening, and even came across "drain", but can't seem to get it to work.  Below is the code in it's simplest form.

In this example, I would expect "HI" to display on the client and 5 seconds later "LO" to display:

Mojo::IOLoop->server({port => 9000} => sub {

    my ($loop, $stream) = @_;

    $loop   = $loop->max_connections(1000);
   
    $stream->on(drain => sub {
 
    print "Drain\n";
#            $stream->write("0\r\n\r\n");
    });
   
    $stream->on(read => sub {
  
        my ($stream, $bytes) = @_;

        print "Bytes: $bytes\n";
     
        $stream->write("HTTP/1.1 200 OK\r\n");
        $stream->write("Connection: keep-alive\r\n");
        $stream->write("Transfer-Encoding: chunked\r\n");
        $stream->write("Content-Type: text/plain\r\n\r\n");
      

       $stream->write("2\r\n");
       $stream->write("HI\r\n");

        sleep(5);

               
        $stream->write("2\r\n");
        $stream->write("LO\r\n");

        $stream->write("0\r\n\r\n");
       
        });


});

Mojo::IOLoop->start unless Mojo::IOLoop->is_running;

[sri]

I'm trying to create a simple server using Mojo, that can stream content back to a browser.

You do know Mojolicious has native support for the chunked transfer encoding, right?

    http://mojolicio.us/perldoc/Mojolicious/Guides/Rendering#Chunked_transfer_encoding

--

sebastian 

[John Saya]

Thanks for the quick reply.  I did see that, but I guess I'm just not sure how to get it working within my code.  Would you be able to show how to get that working within IOLoop->server in my sample code?

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[sri]

Thanks for the quick reply.  I did see that, but I guess I'm just not sure how to get it working within my code.  Would you be able to show how to get that working within IOLoop->server in my sample code?

If you want to know how to build an HTTP server you can always look at the source of Mojo::Server::Daemon.

--

sebastian