comment on

hi all, I am trying to write a simple perl http server to polish my perl skills.
Below is my code, the first time I access to localhost:8090, it can display the page. However, when I refresh the page, nothing produces in the browser, what is the problem of my code?
Thanks

use feature ':5.10';
use IO::Socket;
use Carp;
#use URI::Escape;
use Readonly;

$|++;

Readonly::Scalar my $port => '8090';
my $socket = IO::Socket::INET->new(
    Listen    => 5,
    LocalAddr => 'localhost',
    LocalPort => $port,
    Reuse     => 1,
    Proto     => 'tcp',
) or croak "Can not bind port: $!";

my $quit = 0;
print "Server started at $port\n";
while (!$quit) {
    local $SIG{PIPE} = 'IGNORE';
    while (my $session = $socket->accept) {
        my $chunk = '';
        my $n     = 0;
        my @headers;
        my ($method, $uri, $protocol);
        while (sysread($session, my $buffer, 1)) {
            last if $buffer eq "\n";
            $chunk .= $buffer;
        }

        $_ = $chunk;
        m/^(\w+)\s+(\S+)(?:\s+(\S+))?\r?$/;
        $method   = $1 || '';
        $uri      = $2 || '';
        $protocol = $3 || '';

        my $bad_request_doc = join "", <DATA>;
        return unless $method =~ /^(?:POST|GET|DELETE|PUT|HEAD)$/;

        $chunk = '';
        while (sysread($session, my $buffer, 1)) {
            if ($buffer eq "\n") {
                $chunk =~ s/[\r\l\n\s]+$//;
                if ($chunk =~ /^([^()<>\@,;:\\"\/\[\]?={} \t]+):\s*(.*
+)/i) {
                    push @headers, $1 => $2;
                }
                last if ($chunk =~ /^$/);
                $chunk = '';
            }
            else {
                $chunk .= $buffer;
            }
        }
        print $session "HTTP/1.0 200 OK\r\n";
        print $session "Content-Type: text/html\r\nContent-Length: ",
          length($bad_request_doc), "\r\n\r\n", $bad_request_doc,"\n";
        close $session;
    }
}
__DATA__
<html>
  <head>
    <title>Bad Request</title>
  </head>
  <body>
    <h1>Bad Request</h1>

    <p>Your browser sent a request which this web server could not
      grok.</p>
  </body>
</html>
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In reply to Http server problem by woosley

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