1 package Catalyst::Engine::HTTP;
4 use base 'Catalyst::Engine::CGI';
5 use Data::Dump qw(dump);
6 use Errno 'EWOULDBLOCK';
12 use IO::Socket::INET ();
16 require Catalyst::Engine::HTTP::Restarter;
17 require Catalyst::Engine::HTTP::Restarter::Watcher;
19 sub CHUNKSIZE () { 64 * 1024 }
21 sub DEBUG () { $ENV{CATALYST_HTTP_DEBUG} || 0 }
25 Catalyst::Engine::HTTP - Catalyst HTTP Engine
29 A script using the Catalyst::Engine::HTTP module might look like:
33 BEGIN { $ENV{CATALYST_ENGINE} = 'HTTP' }
36 use lib '/path/to/MyApp/lib';
43 This is the Catalyst engine specialized for development and testing.
47 =head2 $self->finalize_headers($c)
51 sub finalize_headers {
52 my ( $self, $c ) = @_;
53 my $protocol = $c->request->protocol;
54 my $status = $c->response->status;
55 my $message = status_message($status);
58 push @headers, "$protocol $status $message";
60 $c->response->headers->header( Date => HTTP::Date::time2str(time) );
61 $c->response->headers->header( Connection => 'close' );
62 $c->response->headers->header( Status => $status );
64 push @headers, $c->response->headers->as_string("\x0D\x0A");
66 # Buffer the headers so they are sent with the first write() call
67 # This reduces the number of TCP packets we are sending
68 $self->{_header_buf} = join("\x0D\x0A", @headers, '');
71 =head2 $self->finalize_read($c)
76 my ( $self, $c ) = @_;
78 # Never ever remove this, it would result in random length output
79 # streams if STDIN eq STDOUT (like in the HTTP engine)
82 return $self->NEXT::finalize_read($c);
85 =head2 $self->prepare_read($c)
90 my ( $self, $c ) = @_;
92 # Set the input handle to non-blocking
95 return $self->NEXT::prepare_read($c);
98 =head2 $self->read_chunk($c, $buffer, $length)
106 # If we have any remaining data in the input buffer, send it back first
107 if ( $_[0] = delete $self->{inputbuf} ) {
108 my $read = length( $_[0] );
109 DEBUG && warn "read_chunk: Read $read bytes from previous input buffer\n";
113 # support for non-blocking IO
115 vec( $rin, *STDIN->fileno, 1 ) = 1;
119 select( $rin, undef, undef, undef );
120 my $rc = *STDIN->sysread(@_);
122 DEBUG && warn "read_chunk: Read $rc bytes from socket\n";
126 next READ if $! == EWOULDBLOCK;
132 =head2 $self->write($c, $buffer)
134 Writes the buffer to the client. Can only be called once for a request.
139 my ( $self, $c, $buffer ) = @_;
141 # Avoid 'print() on closed filehandle Remote' warnings when using IE
142 return unless *STDOUT->opened();
146 # Prepend the headers if they have not yet been sent
147 if ( my $headers = delete $self->{_header_buf} ) {
148 DEBUG && warn "write: Wrote headers and first chunk (" . length($headers . $buffer) . " bytes)\n";
149 $ret = $self->NEXT::write( $c, $headers . $buffer );
152 DEBUG && warn "write: Wrote chunk (" . length($buffer) . " bytes)\n";
153 $ret = $self->NEXT::write( $c, $buffer );
157 $self->{_write_error} = $!;
167 # A very very simple HTTP server that initializes a CGI environment
169 my ( $self, $class, $port, $host, $options ) = @_;
173 if ($options->{background}) {
175 die "Can't fork: $!" unless defined($child);
180 local $SIG{CHLD} = 'IGNORE';
182 my $allowed = $options->{allowed} || { '127.0.0.1' => '255.255.255.255' };
183 my $addr = $host ? inet_aton($host) : INADDR_ANY;
184 if ( $addr eq INADDR_ANY ) {
185 require Sys::Hostname;
186 $host = lc Sys::Hostname::hostname();
189 $host = gethostbyaddr( $addr, AF_INET ) || inet_ntoa($addr);
195 my $daemon = IO::Socket::INET->new(
197 LocalAddr => inet_ntoa($addr),
203 or die "Couldn't create daemon: $!";
205 my $url = "http://$host";
206 $url .= ":$port" unless $port == 80;
208 print "You can connect to your server at $url\n";
210 if ($options->{background}) {
211 open STDIN, "+</dev/null" or die $!;
212 open STDOUT, ">&STDIN" or die $!;
213 open STDERR, ">&STDIN" or die $!;
214 if ( $^O !~ /MSWin32/ ) {
217 or die "Can't start a new session: $!";
221 if (my $pidfile = $options->{pidfile}) {
222 if (! open PIDFILE, "> $pidfile") {
223 warn("Cannot open: $pidfile: $!");
225 print PIDFILE "$$\n";
231 # Ignore broken pipes as an HTTP server should
232 local $SIG{PIPE} = 'IGNORE';
235 while ( !$restart ) {
236 while ( accept( Remote, $daemon ) ) {
237 DEBUG && warn "New connection\n";
243 # Read until we see a newline
244 $self->{inputbuf} = '';
247 my $read = sysread Remote, my $buf, CHUNKSIZE;
250 DEBUG && warn "EOF or error: $!\n";
254 DEBUG && warn "Read $read bytes\n";
255 $self->{inputbuf} .= $buf;
256 last if $self->{inputbuf} =~ /(\x0D\x0A?|\x0A\x0D?)/s;
259 my ( $method, $uri, $protocol ) = $self->_parse_request_line;
261 DEBUG && warn "Parsed request: $method $uri $protocol\n";
265 unless ( uc($method) eq 'RESTART' ) {
268 if ( $options->{fork} ) { next if $pid = fork }
270 $self->_handler( $class, $port, $method, $uri, $protocol );
272 if ( my $error = delete $self->{_write_error} ) {
273 DEBUG && warn "Write error: $error\n";
278 $daemon->close if defined $pid;
281 my $sockdata = $self->_socket_data( \*Remote );
282 my $ipaddr = _inet_addr( $sockdata->{peeraddr} );
284 foreach my $ip ( keys %$allowed ) {
285 my $mask = $allowed->{$ip};
286 $ready = ( $ipaddr & _inet_addr($mask) ) == _inet_addr($ip);
295 exit if defined $pid;
304 DEBUG && warn "Shutting down\n";
307 $SIG{CHLD} = 'DEFAULT';
310 ### if the standalone server was invoked with perl -I .. we will loose
311 ### those include dirs upon re-exec. So add them to PERL5LIB, so they
312 ### are available again for the exec'ed process --kane
314 $ENV{PERL5LIB} .= join $Config{path_sep}, @INC;
316 exec $^X . ' "' . $0 . '" ' . join( ' ', @{ $options->{argv} } );
323 my ( $self, $class, $port, $method, $uri, $protocol ) = @_;
325 local *STDIN = \*Remote;
326 local *STDOUT = \*Remote;
328 # We better be careful and just use 1.0
331 my $sockdata = $self->_socket_data( \*Remote );
332 my %copy_of_env = %ENV;
334 my $sel = IO::Select->new;
335 $sel->add( \*STDIN );
337 my ( $path, $query_string ) = split /\?/, $uri, 2;
339 # Initialize CGI environment
341 PATH_INFO => $path || '',
342 QUERY_STRING => $query_string || '',
343 REMOTE_ADDR => $sockdata->{peeraddr},
344 REMOTE_HOST => $sockdata->{peername},
345 REQUEST_METHOD => $method || '',
346 SERVER_NAME => $sockdata->{localname},
347 SERVER_PORT => $port,
348 SERVER_PROTOCOL => "HTTP/$protocol",
353 if ( $protocol >= 1 ) {
354 $self->_parse_headers;
357 # Pass flow control to Catalyst
358 $class->handle_request;
360 DEBUG && warn "Request done\n";
362 # XXX: We used to have a hack for keep-alive here but keep-alive
363 # has no place in a single-tasking server like this. Use HTTP::POE
364 # if you want keep-alive.
369 sub _parse_request_line {
373 if ( $self->{inputbuf} !~ s/^(\w+)[ \t]+(\S+)(?:[ \t]+(HTTP\/\d+\.\d+))?[^\012]*\012// ) {
379 my $proto = $3 || 'HTTP/0.9';
381 return ( $method, $uri, $proto );
387 # Copy the buffer for header parsing, and remove the header block
388 # from the content buffer.
389 my $buf = $self->{inputbuf};
390 $self->{inputbuf} =~ s/.*?(\x0D\x0A?\x0D\x0A?|\x0A\x0D?\x0A\x0D?)//s;
393 my $headers = HTTP::Headers->new;
396 while ( $buf =~ s/^([^\012]*)\012// ) {
399 if ( /^([\w\-~]+)\s*:\s*(.*)/ ) {
400 $headers->push_header( $key, $val ) if $key;
401 ($key, $val) = ($1, $2);
403 elsif ( /^\s+(.*)/ ) {
410 $headers->push_header( $key, $val ) if $key;
412 DEBUG && warn "Parsed headers: " . dump($headers) . "\n";
414 # Convert headers into ENV vars
415 $headers->scan( sub {
416 my ( $key, $val ) = @_;
419 $key = 'COOKIE' if $key eq 'COOKIES';
421 $key = 'HTTP_' . $key
422 unless $key =~ m/\A(?:CONTENT_(?:LENGTH|TYPE)|COOKIE)\z/;
424 if ( exists $ENV{$key} ) {
425 $ENV{$key} .= ", $val";
434 my ( $self, $handle ) = @_;
436 my $remote_sockaddr = getpeername($handle);
437 my ( undef, $iaddr ) = $remote_sockaddr
438 ? sockaddr_in($remote_sockaddr)
441 my $local_sockaddr = getsockname($handle);
442 my ( undef, $localiaddr ) = sockaddr_in($local_sockaddr);
444 # This mess is necessary to keep IE from crashing the server
447 ? ( gethostbyaddr( $iaddr, AF_INET ) || 'localhost' )
450 ? ( inet_ntoa($iaddr) || '127.0.0.1' )
452 localname => gethostbyaddr( $localiaddr, AF_INET ) || 'localhost',
453 localaddr => inet_ntoa($localiaddr) || '127.0.0.1',
459 sub _inet_addr { unpack "N*", inet_aton( $_[0] ) }
463 L<Catalyst>, L<Catalyst::Engine>.
467 Sebastian Riedel, <sri@cpan.org>
469 Dan Kubb, <dan.kubb-cpan@onautopilot.com>
471 Sascha Kiefer, <esskar@cpan.org>
473 Andy Grundman, <andy@hybridized.org>
477 Many parts are ripped out of C<HTTP::Server::Simple> by Jesse Vincent.
481 This program is free software, you can redistribute it and/or modify it under
482 the same terms as Perl itself.