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Comparing Coro/myhttpd/httpd.pl (file contents):
Revision 1.29 by root, Sat Aug 25 15:14:03 2001 UTC vs.
Revision 1.38 by root, Sun Sep 2 02:27:51 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
6use HTTP::Date;
5 7
6no utf8; 8no utf8;
7use bytes; 9use bytes;
8 10
9# at least on my machine, this thingy serves files 11# at least on my machine, this thingy serves files
… …
25 my $level = shift; 27 my $level = shift;
26 my $format = shift; 28 my $format = shift;
27 printf "---: $format\n", @_; 29 printf "---: $format\n", @_;
28} 30}
29 31
30my $connections = new Coro::Semaphore $MAX_CONNECTS; 32our $connections = new Coro::Semaphore $MAX_CONNECTS || 250;
33
34our $wait_factor = 0.95;
35
36our @transfers = (
37 [(new Coro::Semaphore $MAX_TRANSFERS_SMALL || 50), 1],
38 [(new Coro::Semaphore $MAX_TRANSFERS_LARGE || 50), 1],
39);
31 40
32my @newcons; 41my @newcons;
33my @pool; 42my @pool;
34 43
35# one "execution thread" 44# one "execution thread"
36sub handler { 45sub handler {
37 while () { 46 while () {
38 my $new = pop @newcons;
39 if ($new) { 47 if (@newcons) {
40 eval { 48 eval {
41 conn->new(@$new)->handle; 49 conn->new(@{pop @newcons})->handle;
42 }; 50 };
43 slog 1, "$@" if $@ && !ref $@; 51 slog 1, "$@" if $@ && !ref $@;
44 $connections->up; 52 $connections->up;
45 } else { 53 } else {
46 last if @pool >= $MAX_POOL; 54 last if @pool >= $MAX_POOL;
… …
57 Listen => 50, 65 Listen => 50,
58 or die "unable to start server"; 66 or die "unable to start server";
59 67
60push @listen_sockets, $http_port; 68push @listen_sockets, $http_port;
61 69
70our $NOW;
71our $HTTP_NOW;
72
73Event->timer(interval => 1, hard => 1, cb => sub {
74 $NOW = time;
75 $HTTP_NOW = time2str $NOW;
76})->now;
77
62# the "main thread" 78# the "main thread"
63async { 79async {
64 slog 1, "accepting connections"; 80 slog 1, "accepting connections";
65 while () { 81 while () {
66 $connections->down; 82 $connections->down;
67 push @newcons, [$http_port->accept]; 83 push @newcons, [$http_port->accept];
68 #slog 3, "accepted @$connections ".scalar(@pool); 84 #slog 3, "accepted @$connections ".scalar(@pool);
69 $::NOW = time;
70 if (@pool) { 85 if (@pool) {
71 (pop @pool)->ready; 86 (pop @pool)->ready;
72 } else { 87 } else {
73 async \&handler; 88 async \&handler;
74 } 89 }
… …
82use HTTP::Date; 97use HTTP::Date;
83use Convert::Scalar 'weaken'; 98use Convert::Scalar 'weaken';
84use Linux::AIO; 99use Linux::AIO;
85 100
86Linux::AIO::min_parallel $::AIO_PARALLEL; 101Linux::AIO::min_parallel $::AIO_PARALLEL;
87
88my $aio_requests = new Coro::Semaphore $::AIO_PARALLEL * 4;
89 102
90Event->io(fd => Linux::AIO::poll_fileno, 103Event->io(fd => Linux::AIO::poll_fileno,
91 poll => 'r', async => 1, 104 poll => 'r', async => 1,
92 cb => \&Linux::AIO::poll_cb); 105 cb => \&Linux::AIO::poll_cb);
93 106
… …
120 or $self->err(500, "unable to decode peername"); 133 or $self->err(500, "unable to decode peername");
121 134
122 $self->{remote_addr} = inet_ntoa $iaddr; 135 $self->{remote_addr} = inet_ntoa $iaddr;
123 $self->{time} = $::NOW; 136 $self->{time} = $::NOW;
124 137
125 # enter ourselves into various lists
126 weaken ($conn{$self->{remote_addr}}{$self*1} = $self);
127
128 $::conns++; 138 $::conns++;
129 139
130 $self; 140 $self;
131} 141}
132 142
… …
134 my $self = shift; 144 my $self = shift;
135 145
136 $::conns--; 146 $::conns--;
137 147
138 $self->eoconn; 148 $self->eoconn;
139 delete $conn{$self->{remote_addr}}{$self*1};
140} 149}
141 150
142# end of connection 151# end of connection
143sub eoconn { 152sub eoconn {
144 my $self = shift; 153 my $self = shift;
154
155 # clean up hints
156 delete $conn{$self->{remote_id}}{$self*1};
145 delete $uri{$self->{remote_addr}}{$self->{uri}}{$self*1}; 157 delete $uri{$self->{remote_id}}{$self->{uri}}{$self*1};
146} 158}
147 159
148sub slog { 160sub slog {
149 my $self = shift; 161 my $self = shift;
150 main::slog($_[0], ($self->{remote_id} || $self->{remote_addr}) ."> $_[1]"); 162 main::slog($_[0], ($self->{remote_id} || $self->{remote_addr}) ."> $_[1]");
… …
154 my ($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";
… …
177sub err { 189sub err {
178 my $self = shift; 190 my $self = shift;
179 my ($code, $msg, $hdr, $content) = @_; 191 my ($code, $msg, $hdr, $content) = @_;
180 192
181 unless (defined $content) { 193 unless (defined $content) {
182 $content = "$code $msg"; 194 $content = "$code $msg\n";
183 $hdr->{"Content-Type"} = "text/plain"; 195 $hdr->{"Content-Type"} = "text/plain";
184 $hdr->{"Content-Length"} = length $content; 196 $hdr->{"Content-Length"} = length $content;
185 } 197 }
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};
… …
246 } 224 }
247 225
248 $self->{h} = {}; 226 $self->{h} = {};
249 227
250 $fh->timeout($::RES_TIMEOUT); 228 $fh->timeout($::RES_TIMEOUT);
251 my $ip = $self->{remote_addr};
252
253 if ($blocked{$ip}) {
254 $self->err_blocked($blocked{$ip})
255 if $blocked{$ip} > $::NOW;
256
257 delete $blocked{$ip};
258 }
259
260 if (%{$conn{$ip}} > $::MAX_CONN_IP) {
261 $self->slog(2, "blocked ip $ip");
262 $self->err_blocked;
263 }
264 229
265 $req =~ /^(?:\015\012)? 230 $req =~ /^(?:\015\012)?
266 (GET|HEAD) \040+ 231 (GET|HEAD) \040+
267 ([^\040]+) \040+ 232 ([^\040]+) \040+
268 HTTP\/([0-9]+\.[0-9]+) 233 HTTP\/([0-9]+\.[0-9]+)
… …
293 258
294 $self->{h}{$h} = substr $v, 1 259 $self->{h}{$h} = substr $v, 1
295 while ($h, $v) = each %hdr; 260 while ($h, $v) = each %hdr;
296 } 261 }
297 262
263 # remote id should be unique per user
264 my $id = $self->{remote_addr};
265
266 if (exists $self->{h}{"client-ip"}) {
267 $id .= "[".$self->{h}{"client-ip"}."]";
268 } elsif (exists $self->{h}{"x-forwarded-for"}) {
269 $id .= "[".$self->{h}{"x-forwarded-for"}."]";
270 }
271
272 $self->{remote_id} = $id;
273
274 if ($blocked{$id}) {
275 $self->err_blocked($blocked{$id})
276 if $blocked{$id} > $::NOW;
277
278 delete $blocked{$id};
279 }
280
281 if (%{$conn{$id}} >= $::MAX_CONN_IP) {
282 my $delay = $::PER_TIMEOUT + 15;
283 while (%{$conn{$id}} >= $::MAX_CONN_IP) {
284 if ($delay <= 0) {
285 $self->slog(2, "blocked ip $id");
286 $self->err_blocked;
287 } else {
288 Coro::Event::do_timer(after => 4); $delay -= 4;
289 }
290 }
291 }
292
298 # find out server name and port 293 # find out server name and port
299 if ($self->{uri} =~ s/^http:\/\/([^\/?#]*)//i) { 294 if ($self->{uri} =~ s/^http:\/\/([^\/?#]*)//i) {
300 $host = $1; 295 $host = $1;
301 } else { 296 } else {
302 $host = $self->{h}{host}; 297 $host = $self->{h}{host};
… …
311 $host = inet_ntoa $host; 306 $host = inet_ntoa $host;
312 } 307 }
313 308
314 $self->{server_name} = $host; 309 $self->{server_name} = $host;
315 310
316 # remote id should be unique per user 311 # enter ourselves into various lists
317 $self->{remote_id} = $self->{remote_addr}; 312 weaken ($conn{$id}{$self*1} = $self);
318
319 if (exists $self->{h}{"client-ip"}) {
320 $self->{remote_id} .= "[".$self->{h}{"client-ip"}."]";
321 } elsif (exists $self->{h}{"x-forwarded-for"}) {
322 $self->{remote_id} .= "[".$self->{h}{"x-forwarded-for"}."]";
323 }
324
325 weaken ($uri{$self->{remote_addr}}{$self->{uri}}{$self*1} = $self); 313 weaken ($uri{$id}{$self->{uri}}{$self*1} = $self);
326 314
327 eval { 315 eval {
328 $self->map_uri; 316 $self->map_uri;
329 $self->respond; 317 $self->respond;
330 }; 318 };
… …
439 $idx); 427 $idx);
440} 428}
441 429
442sub handle_file { 430sub handle_file {
443 my $self = shift; 431 my $self = shift;
444 my $length = -s _; 432 my $length = $self->{stat}[7];
433 my $queue = $::transfers[$length >= $::TRANSFER_SMALL];
445 my $hdr = { 434 my $hdr = {
446 "Last-Modified" => time2str ((stat _)[9]), 435 "Last-Modified" => time2str ((stat _)[9]),
447 }; 436 };
448 437
449 my @code = (200, "ok"); 438 my @code = (200, "ok");
… …
461 } 450 }
462 goto satisfiable if $l >= 0 && $l < $length && $h >= 0 && $h >= $l; 451 goto satisfiable if $l >= 0 && $l < $length && $h >= 0 && $h >= $l;
463 } 452 }
464 $hdr->{"Content-Range"} = "bytes */$length"; 453 $hdr->{"Content-Range"} = "bytes */$length";
465 $hdr->{"Content-Length"} = $length; 454 $hdr->{"Content-Length"} = $length;
466 $self->slog(9, "not satisfiable($self->{h}{range}|".$self->{h}{"user-agent"}.")");
467 $self->err(416, "not satisfiable", $hdr, ""); 455 $self->err(416, "not satisfiable", $hdr, "");
468 456
469satisfiable: 457satisfiable:
470 # check for segmented downloads 458 # check for segmented downloads
471 if ($l && $::NO_SEGMENTED) { 459 if ($l && $::NO_SEGMENTED) {
472 my $delay = 60; 460 my $delay = $::PER_TIMEOUT + 15;
473 while (%{$uri{$self->{remote_addr}}{$self->{uri}}} > 1) { 461 while (%{$uri{$self->{remote_id}}{$self->{uri}}} > 1) {
474 if ($delay <= 0) { 462 if ($delay <= 0) {
475 $self->err(400, "segmented downloads are not allowed", 463 $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 { 464 } else {
489 Coro::Event::do_timer(after => 3); $delay -= 3; 465 Coro::Event::do_timer(after => 4); $delay -= 4;
490 } 466 }
491 } 467 }
492 } 468 }
493 469
494 $hdr->{"Content-Range"} = "bytes $l-$h/$length"; 470 $hdr->{"Content-Range"} = "bytes $l-$h/$length";
… …
505 $hdr->{"Content-Length"} = $length; 481 $hdr->{"Content-Length"} = $length;
506 482
507 $self->response(@code, $hdr, ""); 483 $self->response(@code, $hdr, "");
508 484
509 if ($self->{method} eq "GET") { 485 if ($self->{method} eq "GET") {
486 $self->{time} = $::NOW;
487
488 my $fudge = $queue->[0]->waiters;
489 $fudge = $fudge ? ($fudge+1)/$fudge : 1;
490
491 $queue->[1] *= $fudge;
492 my $transfer = $queue->[0]->guard;
493
494 if ($fudge != 1) {
495 $queue->[1] /= $fudge;
496 $queue->[1] = $queue->[1] * $::wait_factor
497 + ($::NOW - $self->{time}) * (1 - $::wait_factor);
498 }
499 $self->{time} = $::NOW;
500
501 $self->{fh}->writable or return;
502
510 my ($fh, $buf, $r); 503 my ($fh, $buf, $r);
511 my $current = $Coro::current; 504 my $current = $Coro::current;
512 open $fh, "<", $self->{path} 505 open $fh, "<", $self->{path}
513 or die "$self->{path}: late open failure ($!)"; 506 or die "$self->{path}: late open failure ($!)";
514 507
… …
523 while ($h > 0) { 516 while ($h > 0) {
524 if (0) { 517 if (0) {
525 sysread $fh, $buf, $h > $::BUFSIZE ? $::BUFSIZE : $h 518 sysread $fh, $buf, $h > $::BUFSIZE ? $::BUFSIZE : $h
526 or last; 519 or last;
527 } else { 520 } else {
528 undef $buf;
529 $aio_requests->down;
530 aio_read($fh, $l, ($h > $::BUFSIZE ? $::BUFSIZE : $h), 521 aio_read($fh, $l, ($h > $::BUFSIZE ? $::BUFSIZE : $h),
531 $buf, 0, sub { 522 $buf, 0, sub {
532 $r = $_[0]; 523 $r = $_[0];
533 $current->ready; 524 Coro::ready($current);
534 }); 525 });
535 &Coro::schedule; 526 &Coro::schedule;
536 $aio_requests->up;
537 last unless $r; 527 last unless $r;
538 } 528 }
539 my $w = $self->{fh}->syswrite($buf) 529 my $w = syswrite $self->{fh}, $buf
540 or last; 530 or last;
541 $::written += $w; 531 $::written += $w;
542 $self->{written} += $w; 532 $self->{written} += $w;
543 $l += $r; 533 $l += $r;
544 } 534 }
545 }
546 535
547 close $fh; 536 close $fh;
537 }
548} 538}
549 539
5501; 5401;

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