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Comparing Coro/myhttpd/httpd.pl (file contents):
Revision 1.40 by root, Mon Sep 3 00:06:06 2001 UTC vs.
Revision 1.68 by root, Mon May 20 04:08:03 2002 UTC

1use Coro; 1use Coro;
2use Coro::Semaphore; 2use Coro::Semaphore;
3use Coro::Event; 3use Coro::Event;
4use Coro::Socket; 4use Coro::Socket;
5use Coro::Signal;
5 6
6use HTTP::Date; 7use HTTP::Date;
8use POSIX ();
9
10use Compress::Zlib ();
7 11
8no utf8; 12no utf8;
9use bytes; 13use bytes;
10 14
11# at least on my machine, this thingy serves files 15# at least on my machine, this thingy serves files
… …
13# and quite a bit slower than thttpd :( 17# and quite a bit slower than thttpd :(
14 18
15$SIG{PIPE} = 'IGNORE'; 19$SIG{PIPE} = 'IGNORE';
16 20
17our $accesslog; 21our $accesslog;
22our $errorlog;
23
24our $NOW;
25our $HTTP_NOW;
26
27Event->timer(interval => 1, hard => 1, cb => sub {
28 $NOW = time;
29 $HTTP_NOW = time2str $NOW;
30})->now;
31
32if ($ERROR_LOG) {
33 use IO::Handle;
34 open $errorlog, ">>$ERROR_LOG"
35 or die "$ERROR_LOG: $!";
36 $errorlog->autoflush(1);
37}
18 38
19if ($ACCESS_LOG) { 39if ($ACCESS_LOG) {
20 use IO::Handle; 40 use IO::Handle;
21 open $accesslog, ">>$ACCESS_LOG" 41 open $accesslog, ">>$ACCESS_LOG"
22 or die "$ACCESS_LOG: $!"; 42 or die "$ACCESS_LOG: $!";
… …
24} 44}
25 45
26sub slog { 46sub slog {
27 my $level = shift; 47 my $level = shift;
28 my $format = shift; 48 my $format = shift;
49 my $NOW = (POSIX::strftime "%Y-%m-%d %H:%M:%S", gmtime $::NOW);
29 printf "---: $format\n", @_; 50 printf "$NOW: $format\n", @_;
51 printf $errorlog "$NOW: $format\n", @_ if $errorlog;
30} 52}
31 53
32our $connections = new Coro::Semaphore $MAX_CONNECTS || 250; 54our $connections = new Coro::Semaphore $MAX_CONNECTS || 250;
55our $httpevent = new Coro::Signal;
33 56
34our $wait_factor = 0.95; 57our $queue_file = new transferqueue $MAX_TRANSFERS;
58our $queue_index = new transferqueue 10;
35 59
36our @transfers = ( 60our $tbf_top = new tbf rate => 200000;
37 [(new Coro::Semaphore $MAX_TRANSFERS_SMALL || 50), 1], 61
38 [(new Coro::Semaphore $MAX_TRANSFERS_LARGE || 50), 1], 62my $unused_bytes = 0;
39); 63my $unused_last = time;
64
65sub unused_bandwidth {
66 $unused_bytes += $_[0];
67 if ($unused_last < $NOW - 30 && $unused_bytes / ($NOW - $unused_last) > 50000) {
68 $unused_last = $NOW;
69 $unused_bytes = 0;
70 $queue_file->force_wake_next;
71 slog 1, "forced filetransfer due to unused bandwidth";
72 }
73}
40 74
41my @newcons; 75my @newcons;
42my @pool; 76my @pool;
43 77
44# one "execution thread" 78# one "execution thread"
… …
47 if (@newcons) { 81 if (@newcons) {
48 eval { 82 eval {
49 conn->new(@{pop @newcons})->handle; 83 conn->new(@{pop @newcons})->handle;
50 }; 84 };
51 slog 1, "$@" if $@ && !ref $@; 85 slog 1, "$@" if $@ && !ref $@;
86
87 $httpevent->broadcast; # only for testing, but doesn't matter much
88
52 $connections->up; 89 $connections->up;
53 } else { 90 } else {
54 last if @pool >= $MAX_POOL; 91 last if @pool >= $MAX_POOL;
55 push @pool, $Coro::current; 92 push @pool, $Coro::current;
56 schedule; 93 schedule;
… …
87 Listen => 50, 124 Listen => 50,
88 or die "unable to start server"; 125 or die "unable to start server";
89 126
90listen_on $http_port; 127listen_on $http_port;
91 128
129if ($SERVER_PORT2) {
92my $http_port = new Coro::Socket 130 my $http_port = new Coro::Socket
93 LocalAddr => $SERVER_HOST, 131 LocalAddr => $SERVER_HOST,
94 LocalPort => $SERVER_PORT2, 132 LocalPort => $SERVER_PORT2,
95 ReuseAddr => 1, 133 ReuseAddr => 1,
96 Listen => 50, 134 Listen => 50,
97 or die "unable to start server"; 135 or die "unable to start server";
98 136
99listen_on $http_port; 137 listen_on $http_port;
100 138}
101our $NOW;
102our $HTTP_NOW;
103
104Event->timer(interval => 1, hard => 1, cb => sub {
105 $NOW = time;
106 $HTTP_NOW = time2str $NOW;
107})->now;
108 139
109package conn; 140package conn;
110 141
111use Socket; 142use Socket;
112use HTTP::Date; 143use HTTP::Date;
… …
139 170
140read_mimetypes; 171read_mimetypes;
141 172
142sub new { 173sub new {
143 my $class = shift; 174 my $class = shift;
175 my $fh = shift;
144 my $peername = shift; 176 my $peername = shift;
145 my $fh = shift;
146 my $self = bless { fh => $fh }, $class; 177 my $self = bless { fh => $fh }, $class;
147 my (undef, $iaddr) = unpack_sockaddr_in $peername 178 my (undef, $iaddr) = unpack_sockaddr_in $peername
148 or $self->err(500, "unable to decode peername"); 179 or $self->err(500, "unable to decode peername");
149 180
181 $self->{remote_addr} =
150 $self->{remote_addr} = inet_ntoa $iaddr; 182 $self->{remote_id} = inet_ntoa $iaddr;
183
151 $self->{time} = $::NOW; 184 $self->{time} = $::NOW;
152 185
186 weaken ($Coro::current->{conn} = $self);
187
153 $::conns++; 188 $::conns++;
189 $::maxconns = $::conns if $::conns > $::maxconns;
154 190
155 $self; 191 $self;
156} 192}
157 193
158sub DESTROY { 194sub DESTROY {
159 my $self = shift; 195 #my $self = shift;
160 $::conns--; 196 $::conns--;
161 $self->eoconn;
162}
163
164# end of connection
165sub eoconn {
166 my $self = shift;
167
168 # clean up hints
169 delete $conn{$self->{remote_id}}{$self*1};
170 delete $uri{$self->{remote_id}}{$self->{uri}}{$self*1};
171} 197}
172 198
173sub slog { 199sub slog {
174 my $self = shift; 200 my $self = shift;
175 main::slog($_[0], ($self->{remote_id} || $self->{remote_addr}) ."> $_[1]"); 201 main::slog($_[0], "$self->{remote_id}> $_[1]");
176} 202}
177 203
178sub response { 204sub response {
179 my ($self, $code, $msg, $hdr, $content) = @_; 205 my ($self, $code, $msg, $hdr, $content) = @_;
180 my $res = "HTTP/1.1 $code $msg\015\012"; 206 my $res = "HTTP/1.1 $code $msg\015\012";
207 my $GZ = "";
181 208
182 $self->{h}{connection} ||= $hdr->{Connection}; 209 if (exists $hdr->{Connection}) {
210 if ($hdr->{Connection} =~ /close/) {
211 $self->{h}{connection} = "close"
212 }
213 } else {
214 if ($self->{version} < 1.1) {
215 if ($self->{h}{connection} =~ /keep-alive/i) {
216 $hdr->{Connection} = "Keep-Alive";
217 } else {
218 $self->{h}{connection} = "close"
219 }
220 }
221 }
222
223 if ($self->{method} ne "HEAD"
224 && $self->{h}{"accept-encoding"} =~ /\bgzip\b/
225 && 400 < length $content
226 && $hdr->{"Content-Length"} == length $content
227 && !exists $hdr->{"Content-Encoding"}
228 ) {
229 my $orig = length $content;
230 $hdr->{"Content-Encoding"} = "gzip";
231 $content = Compress::Zlib::memGzip(\$content);
232 $hdr->{"Content-Length"} = length $content;
233 $GZ = sprintf "GZ%02d", 100 - 100*((length $content) / $orig);
234 }
183 235
184 $res .= "Date: $HTTP_NOW\015\012"; 236 $res .= "Date: $HTTP_NOW\015\012";
185 237
186 while (my ($h, $v) = each %$hdr) { 238 while (my ($h, $v) = each %$hdr) {
187 $res .= "$h: $v\015\012" 239 $res .= "$h: $v\015\012"
188 } 240 }
189 $res .= "\015\012"; 241 $res .= "\015\012";
190 242
191 $res .= $content if defined $content and $self->{method} ne "HEAD"; 243 $res .= $content if defined $content and $self->{method} ne "HEAD";
192 244
193 my $log = "$self->{remote_addr} \"$self->{uri}\" $code ".$hdr->{"Content-Length"}." \"$self->{h}{referer}\"\n"; 245 my $log = (POSIX::strftime "%Y-%m-%d %H:%M:%S", gmtime $::NOW).
246 " $self->{remote_id} \"$self->{uri}\" $code ".$hdr->{"Content-Length"}.$GZ.
247 " \"$self->{h}{referer}\"\n";
194 248
195 print $accesslog $log if $accesslog; 249 print $::accesslog $log if $::accesslog;
196 print STDERR $log; 250 print STDERR $log;
197 251
198 $self->{written} += 252 $tbf_top->request(length $res, 1e6);
199 print {$self->{fh}} $res; 253 $self->{written} += print {$self->{fh}} $res;
200} 254}
201 255
202sub err { 256sub err {
203 my $self = shift; 257 my $self = shift;
204 my ($code, $msg, $hdr, $content) = @_; 258 my ($code, $msg, $hdr, $content) = @_;
… …
259 my (%hdr, $h, $v); 313 my (%hdr, $h, $v);
260 314
261 $hdr{lc $1} .= ",$2" 315 $hdr{lc $1} .= ",$2"
262 while $req =~ /\G 316 while $req =~ /\G
263 ([^:\000-\040]+): 317 ([^:\000-\040]+):
264 [\008\040]* 318 [\011\040]*
265 ((?: [^\015\012]+ | \015\012[\008\040] )*) 319 ((?: [^\015\012]+ | \015\012[\011\040] )*)
266 \015\012 320 \015\012
267 /gxc; 321 /gxc;
268 322
269 $req =~ /\G\015\012$/ 323 $req =~ /\G\015\012$/
270 or $self->err(400, "bad request"); 324 or $self->err(400, "bad request");
… …
282 $id .= "[".$self->{h}{"x-forwarded-for"}."]"; 336 $id .= "[".$self->{h}{"x-forwarded-for"}."]";
283 } 337 }
284 338
285 $self->{remote_id} = $id; 339 $self->{remote_id} = $id;
286 340
341 weaken (local $conn{$id}{$self*1} = $self);
342
287 if ($blocked{$id}) { 343 if ($blocked{$id}) {
288 $self->err_blocked($blocked{$id}) 344 $self->err_blocked
289 if $blocked{$id} > $::NOW; 345 if $blocked{$id}[0] > $::NOW;
290 346
291 delete $blocked{$id}; 347 delete $blocked{$id};
292 }
293
294 if (%{$conn{$id}} >= $::MAX_CONN_IP) {
295 my $delay = $::PER_TIMEOUT + 15;
296 while (%{$conn{$id}} >= $::MAX_CONN_IP) {
297 if ($delay <= 0) {
298 $self->slog(2, "blocked ip $id");
299 $self->err_blocked;
300 } else {
301 Coro::Event::do_timer(after => 4); $delay -= 4;
302 }
303 }
304 } 348 }
305 349
306 # find out server name and port 350 # find out server name and port
307 if ($self->{uri} =~ s/^http:\/\/([^\/?#]*)//i) { 351 if ($self->{uri} =~ s/^http:\/\/([^\/?#]*)//i) {
308 $host = $1; 352 $host = $1;
… …
312 356
313 if (defined $host) { 357 if (defined $host) {
314 $self->{server_port} = $host =~ s/:([0-9]+)$// ? $1 : 80; 358 $self->{server_port} = $host =~ s/:([0-9]+)$// ? $1 : 80;
315 } else { 359 } else {
316 ($self->{server_port}, $host) 360 ($self->{server_port}, $host)
317 = unpack_sockaddr_in $self->{fh}->getsockname 361 = unpack_sockaddr_in $self->{fh}->sockname
318 or $self->err(500, "unable to get socket name"); 362 or $self->err(500, "unable to get socket name");
319 $host = inet_ntoa $host; 363 $host = inet_ntoa $host;
320 } 364 }
321 365
322 $self->{server_name} = $host; 366 $self->{server_name} = $host;
323 367
324 # enter ourselves into various lists
325 weaken ($conn{$id}{$self*1} = $self);
326 weaken ($uri{$id}{$self->{uri}}{$self*1} = $self); 368 weaken (local $uri{$id}{$self->{uri}}{$self*1} = $self);
327 369
328 eval { 370 eval {
329 $self->map_uri; 371 $self->map_uri;
330 $self->respond; 372 $self->respond;
331 }; 373 };
332 374
333 $self->eoconn;
334
335 die if $@ && !ref $@; 375 die if $@ && !ref $@;
336 376
337 last if $self->{h}{connection} =~ /close/ || $self->{version} < 1.1; 377 last if $self->{h}{connection} =~ /close/i;
378
379 $httpevent->broadcast;
338 380
339 $fh->timeout($::PER_TIMEOUT); 381 $fh->timeout($::PER_TIMEOUT);
340 } 382 }
383}
384
385sub block {
386 my $self = shift;
387
388 $blocked{$self->{remote_id}} = [$::NOW + $_[0], $_[1]];
389 $self->slog(2, "blocked ip $self->{remote_id}");
390 $self->err_blocked;
341} 391}
342 392
343# uri => path mapping 393# uri => path mapping
344sub map_uri { 394sub map_uri {
345 my $self = shift; 395 my $self = shift;
… …
392 442
393sub respond { 443sub respond {
394 my $self = shift; 444 my $self = shift;
395 my $path = $self->{path}; 445 my $path = $self->{path};
396 446
397 stat $path 447 if ($self->{name} =~ s%^/internal/([^/]+)%%) {
398 or $self->err(404, "not found"); 448 if ($::internal{$1}) {
399 449 $::internal{$1}->($self);
400 $self->{stat} = [stat _];
401
402 # idiotic netscape sends idiotic headers AGAIN
403 my $ims = $self->{h}{"if-modified-since"} =~ /^([^;]+)/
404 ? str2time $1 : 0;
405
406 if (-d _ && -r _) {
407 # directory
408 if ($path !~ /\/$/) {
409 # create a redirect to get the trailing "/"
410 # we don't try to avoid the :80
411 $self->err(301, "moved permanently", { Location => "http://".$self->server_hostport."$self->{uri}/" });
412 } else { 450 } else {
413 $ims < $self->{stat}[9] 451 $self->err(404, "not found");
452 }
453 } else {
454
455 stat $path
414 or $self->err(304, "not modified"); 456 or $self->err(404, "not found");
415 457
416 if (-r "$path/index.html") { 458 $self->{stat} = [stat _];
417 $self->{path} .= "/index.html"; 459
418 $self->handle_file; 460 # idiotic netscape sends idiotic headers AGAIN
461 my $ims = $self->{h}{"if-modified-since"} =~ /^([^;]+)/
462 ? str2time $1 : 0;
463
464 if (-d _ && -r _) {
465 # directory
466 if ($path !~ /\/$/) {
467 # create a redirect to get the trailing "/"
468 # we don't try to avoid the :80
469 $self->err(301, "moved permanently", { Location => "http://".$self->server_hostport."$self->{uri}/" });
419 } else { 470 } else {
471 $ims < $self->{stat}[9]
472 or $self->err(304, "not modified");
473
474 if (-r "$path/index.html") {
475 # replace directory "size" by index.html filesize
476 $self->{stat} = [stat ($self->{path} .= "/index.html")];
477 $self->handle_file($queue_index, $tbf_top);
478 } else {
420 $self->handle_dir; 479 $self->handle_dir;
421 } 480 }
422 } 481 }
423 } elsif (-f _ && -r _) { 482 } elsif (-f _ && -r _) {
424 -x _ and $self->err(403, "forbidden"); 483 -x _ and $self->err(403, "forbidden");
425 $self->handle_file; 484
485 if (keys %{$conn{$self->{remote_id}}} > $::MAX_TRANSFERS_IP) {
486 my $timeout = $::NOW + 10;
487 while (keys %{$conn{$self->{remote_id}}} > $::MAX_TRANSFERS_IP) {
488 if ($timeout < $::NOW) {
489 $self->block($::BLOCKTIME, "too many connections");
490 } else {
491 $httpevent->wait;
492 }
493 }
494 }
495
496 $self->handle_file($queue_file, $tbf_top);
426 } else { 497 } else {
427 $self->err(404, "not found"); 498 $self->err(404, "not found");
499 }
428 } 500 }
429} 501}
430 502
431sub handle_dir { 503sub handle_dir {
432 my $self = shift; 504 my $self = shift;
… …
434 506
435 $self->response(200, "ok", 507 $self->response(200, "ok",
436 { 508 {
437 "Content-Type" => "text/html", 509 "Content-Type" => "text/html",
438 "Content-Length" => length $idx, 510 "Content-Length" => length $idx,
511 "Last-Modified" => time2str ($self->{stat}[9]),
439 }, 512 },
440 $idx); 513 $idx);
441} 514}
442 515
443sub handle_file { 516sub handle_file {
444 my $self = shift; 517 my ($self, $queue, $tbf) = @_;
445 my $length = $self->{stat}[7]; 518 my $length = $self->{stat}[7];
446 my $queue = $::transfers[$length >= $::TRANSFER_SMALL];
447 my $hdr = { 519 my $hdr = {
448 "Last-Modified" => time2str ((stat _)[9]), 520 "Last-Modified" => time2str ((stat _)[9]),
449 }; 521 };
450 522
451 my @code = (200, "ok"); 523 my @code = (200, "ok");
… …
468 $self->err(416, "not satisfiable", $hdr, ""); 540 $self->err(416, "not satisfiable", $hdr, "");
469 541
470satisfiable: 542satisfiable:
471 # check for segmented downloads 543 # check for segmented downloads
472 if ($l && $::NO_SEGMENTED) { 544 if ($l && $::NO_SEGMENTED) {
473 my $delay = $::PER_TIMEOUT + 15; 545 my $timeout = $::NOW + 15;
474 while (%{$uri{$self->{remote_id}}{$self->{uri}}} > 1) { 546 while (keys %{$uri{$self->{remote_id}}{$self->{uri}}} > 1) {
475 if ($delay <= 0) { 547 if ($timeout <= $::NOW) {
548 $self->block($::BLOCKTIME, "segmented downloads are forbidden");
476 $self->err_segmented_download; 549 #$self->err_segmented_download;
477 } else { 550 } else {
478 Coro::Event::do_timer(after => 4); $delay -= 4; 551 $httpevent->wait;
479 } 552 }
480 } 553 }
481 } 554 }
482 555
483 $hdr->{"Content-Range"} = "bytes $l-$h/$length"; 556 $hdr->{"Content-Range"} = "bytes $l-$h/$length";
… …
496 $self->response(@code, $hdr, ""); 569 $self->response(@code, $hdr, "");
497 570
498 if ($self->{method} eq "GET") { 571 if ($self->{method} eq "GET") {
499 $self->{time} = $::NOW; 572 $self->{time} = $::NOW;
500 573
501 my $fudge = $queue->[0]->waiters; 574 my $current = $Coro::current;
502 $fudge = $fudge ? ($fudge+1)/$fudge : 1;
503
504 $queue->[1] *= $fudge;
505 my $transfer = $queue->[0]->guard;
506
507 if ($fudge != 1) {
508 $queue->[1] /= $fudge;
509 $queue->[1] = $queue->[1] * $::wait_factor
510 + ($::NOW - $self->{time}) * (1 - $::wait_factor);
511 }
512 $self->{time} = $::NOW;
513
514 $self->{fh}->writable or return;
515 575
516 my ($fh, $buf, $r); 576 my ($fh, $buf, $r);
517 my $current = $Coro::current; 577
518 open $fh, "<", $self->{path} 578 open $fh, "<", $self->{path}
519 or die "$self->{path}: late open failure ($!)"; 579 or die "$self->{path}: late open failure ($!)";
520 580
521 $h -= $l - 1; 581 $h -= $l - 1;
522 582
523 if (0) { 583 if (0) { # !AIO
524 if ($l) { 584 if ($l) {
525 sysseek $fh, $l, 0; 585 sysseek $fh, $l, 0;
526 } 586 }
527 } 587 }
588
589 my $transfer = $queue->start_transfer($h);
590 my $locked;
591 my $bufsize = $::WAIT_BUFSIZE; # initial buffer size
528 592
529 while ($h > 0) { 593 while ($h > 0) {
594 unless ($locked) {
595 if ($locked ||= $transfer->try($::WAIT_INTERVAL)) {
596 $bufsize = $::BUFSIZE;
597 $self->{time} = $::NOW;
598 }
599 }
600
601 if ($blocked{$self->{remote_id}}) {
602 $self->{h}{connection} = "close";
603 die bless {}, err::;
604 }
605
530 if (0) { 606 if (0) { # !AIO
531 sysread $fh, $buf, $h > $::BUFSIZE ? $::BUFSIZE : $h 607 sysread $fh, $buf, $h > $bufsize ? $bufsize : $h
532 or last; 608 or last;
533 } else { 609 } else {
534 aio_read($fh, $l, ($h > $::BUFSIZE ? $::BUFSIZE : $h), 610 aio_read($fh, $l, ($h > $bufsize ? $bufsize : $h),
535 $buf, 0, sub { 611 $buf, 0, sub {
536 $r = $_[0]; 612 $r = $_[0];
537 Coro::ready($current); 613 Coro::ready($current);
538 }); 614 });
539 &Coro::schedule; 615 &Coro::schedule;
540 last unless $r; 616 last unless $r;
541 } 617 }
618
619 $tbf->request(length $buf);
542 my $w = syswrite $self->{fh}, $buf 620 my $w = syswrite $self->{fh}, $buf
543 or last; 621 or last;
544 $::written += $w; 622 $::written += $w;
545 $self->{written} += $w; 623 $self->{written} += $w;
546 $l += $r; 624 $l += $r;

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