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/cvs/cvsroot/Coro/myhttpd/httpd.pl
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Comparing cvsroot/Coro/myhttpd/httpd.pl (file contents):
Revision 1.29 by root, Sat Aug 25 15:14:03 2001 UTC vs.
Revision 1.32 by root, Wed Aug 29 01:32:50 2001 UTC

1use Coro; 1use Coro;
2use Coro::Semaphore; 2use Coro::Semaphore;
3use Coro::Event; 3use Coro::Event;
4use Coro::Socket; 4use Coro::Socket;
5 5
6use HTTP::Date;
7
6no utf8; 8no utf8;
7use bytes; 9use bytes;
10
11our @wait_time = (0); # used to calculcate avg. waiting time
8 12
9# at least on my machine, this thingy serves files 13# at least on my machine, this thingy serves files
10# quite a bit faster than apache, ;) 14# quite a bit faster than apache, ;)
11# and quite a bit slower than thttpd :( 15# and quite a bit slower than thttpd :(
12 16
… …
25 my $level = shift; 29 my $level = shift;
26 my $format = shift; 30 my $format = shift;
27 printf "---: $format\n", @_; 31 printf "---: $format\n", @_;
28} 32}
29 33
30my $connections = new Coro::Semaphore $MAX_CONNECTS; 34our $connections = new Coro::Semaphore $MAX_CONNECTS || 250;
35our $transfers = new Coro::Semaphore $MAX_TRANSFER || 50;
31 36
32my @newcons; 37my @newcons;
33my @pool; 38my @pool;
34 39
35# one "execution thread" 40# one "execution thread"
… …
57 Listen => 50, 62 Listen => 50,
58 or die "unable to start server"; 63 or die "unable to start server";
59 64
60push @listen_sockets, $http_port; 65push @listen_sockets, $http_port;
61 66
67our $NOW;
68our $HTTP_NOW;
69
70Event->timer(interval => 1, hard => 1, cb => sub {
71 $NOW = time;
72 $HTTP_NOW = time2str $NOW;
73});
74
62# the "main thread" 75# the "main thread"
63async { 76async {
64 slog 1, "accepting connections"; 77 slog 1, "accepting connections";
65 while () { 78 while () {
66 $connections->down; 79 $connections->down;
67 push @newcons, [$http_port->accept]; 80 push @newcons, [$http_port->accept];
68 #slog 3, "accepted @$connections ".scalar(@pool); 81 #slog 3, "accepted @$connections ".scalar(@pool);
69 $::NOW = time;
70 if (@pool) { 82 if (@pool) {
71 (pop @pool)->ready; 83 (pop @pool)->ready;
72 } else { 84 } else {
73 async \&handler; 85 async \&handler;
74 } 86 }
… …
154 my ($self, $code, $msg, $hdr, $content) = @_; 166 my ($self, $code, $msg, $hdr, $content) = @_;
155 my $res = "HTTP/1.1 $code $msg\015\012"; 167 my $res = "HTTP/1.1 $code $msg\015\012";
156 168
157 $self->{h}{connection} ||= $hdr->{Connection}; 169 $self->{h}{connection} ||= $hdr->{Connection};
158 170
159 $res .= "Date: ".(time2str $::NOW)."\015\012"; # slow? nah. :( 171 $res .= "Date: $HTTP_NOW\015\012";
160 172
161 while (my ($h, $v) = each %$hdr) { 173 while (my ($h, $v) = each %$hdr) {
162 $res .= "$h: $v\015\012" 174 $res .= "$h: $v\015\012"
163 } 175 }
164 $res .= "\015\012"; 176 $res .= "\015\012";
… …
186 $hdr->{"Connection"} = "close"; 198 $hdr->{"Connection"} = "close";
187 199
188 $self->response($code, $msg, $hdr, $content); 200 $self->response($code, $msg, $hdr, $content);
189 201
190 die bless {}, err::; 202 die bless {}, err::;
191}
192
193sub err_blocked {
194 my $self = shift;
195 my $ip = $self->{remote_addr};
196 my $time = time2str $blocked{$ip} = $::NOW + $::BLOCKTIME;
197
198 Coro::Event::do_timer(after => 20*rand);
199
200 $self->err(401, "too many connections",
201 {
202 "Content-Type" => "text/html",
203 "Retry-After" => $::BLOCKTIME,
204 "Warning" => "Please do NOT retry, you have been blocked",
205 "WWW-Authenticate" => "Basic realm=\"Please do NOT retry, you have been blocked\"",
206 "Connection" => "close",
207 },
208 <<EOF);
209<html>
210<head>
211<title>Too many connections</title>
212</head>
213<body bgcolor="#ffffff" text="#000000" link="#0000ff" vlink="#000080" alink="#ff0000">
214
215<p>You have been blocked because you opened too many connections. You
216may retry at</p>
217
218 <p><blockquote>$time.</blockquote></p>
219
220<p>Until then, each new access will renew the block. You might want to have a
221look at the <a href="http://www.goof.com/pcg/marc/animefaq.html#connectionlimit">FAQ</a>.</p>
222
223</body></html>
224EOF
225} 203}
226 204
227sub handle { 205sub handle {
228 my $self = shift; 206 my $self = shift;
229 my $fh = $self->{fh}; 207 my $fh = $self->{fh};
… …
256 234
257 delete $blocked{$ip}; 235 delete $blocked{$ip};
258 } 236 }
259 237
260 if (%{$conn{$ip}} > $::MAX_CONN_IP) { 238 if (%{$conn{$ip}} > $::MAX_CONN_IP) {
239 my $delay = 120;
240 while (%{$conn{$ip}} > $::MAX_CONN_IP) {
241 if ($delay <= 0) {
261 $self->slog(2, "blocked ip $ip"); 242 $self->slog(2, "blocked ip $ip");
262 $self->err_blocked; 243 $self->err_blocked;
244 } else {
245 Coro::Event::do_timer(after => 3);
246 $delay -= 3;
247 }
248 }
263 } 249 }
264 250
265 $req =~ /^(?:\015\012)? 251 $req =~ /^(?:\015\012)?
266 (GET|HEAD) \040+ 252 (GET|HEAD) \040+
267 ([^\040]+) \040+ 253 ([^\040]+) \040+
… …
467 $self->err(416, "not satisfiable", $hdr, ""); 453 $self->err(416, "not satisfiable", $hdr, "");
468 454
469satisfiable: 455satisfiable:
470 # check for segmented downloads 456 # check for segmented downloads
471 if ($l && $::NO_SEGMENTED) { 457 if ($l && $::NO_SEGMENTED) {
472 my $delay = 60; 458 my $delay = 180;
473 while (%{$uri{$self->{remote_addr}}{$self->{uri}}} > 1) { 459 while (%{$uri{$self->{remote_addr}}{$self->{uri}}} > 1) {
474 if ($delay <= 0) { 460 if ($delay <= 0) {
475 $self->err(400, "segmented downloads are not allowed", 461 $self->err_segmented_download;
476 { "Content-Type" => "text/html", Connection => "close" }, <<EOF);
477<html>
478<head>
479<title>Segmented downloads are not allowed</title>
480</head>
481<body bgcolor="#ffffff" text="#000000" link="#0000ff" vlink="#000080" alink="#ff0000">
482
483<p>Segmented downloads are not allowed on this server. Please refer to the
484<a href="http://www.goof.com/pcg/marc/animefaq.html#segmented_downloads">FAQ</a>.</p>
485
486</body></html>
487EOF
488 } else { 462 } else {
489 Coro::Event::do_timer(after => 3); $delay -= 3; 463 Coro::Event::do_timer(after => 3); $delay -= 3;
490 } 464 }
491 } 465 }
492 } 466 }
… …
505 $hdr->{"Content-Length"} = $length; 479 $hdr->{"Content-Length"} = $length;
506 480
507 $self->response(@code, $hdr, ""); 481 $self->response(@code, $hdr, "");
508 482
509 if ($self->{method} eq "GET") { 483 if ($self->{method} eq "GET") {
484 $self->{time} = $::NOW;
485
486 my $transfer = $::transfers->guard;
487 $self->{fh}->writable or return;
488
489 push @::wait_time, $::NOW - $self->{time};
490 shift @::wait_time if @wait_time > 25;
491 $self->{time} = $::NOW;
492
510 my ($fh, $buf, $r); 493 my ($fh, $buf, $r);
511 my $current = $Coro::current; 494 my $current = $Coro::current;
512 open $fh, "<", $self->{path} 495 open $fh, "<", $self->{path}
513 or die "$self->{path}: late open failure ($!)"; 496 or die "$self->{path}: late open failure ($!)";
514 497
… …
540 or last; 523 or last;
541 $::written += $w; 524 $::written += $w;
542 $self->{written} += $w; 525 $self->{written} += $w;
543 $l += $r; 526 $l += $r;
544 } 527 }
545 }
546 528
547 close $fh; 529 close $fh;
530 }
548} 531}
549 532
5501; 5331;

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