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Comparing cvsroot/Coro/myhttpd/httpd.pl (file contents):
Revision 1.43 by root, Wed Sep 12 20:29:43 2001 UTC vs.
Revision 1.79 by root, Fri Dec 1 03:53:33 2006 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;
6use Coro::AIO ();
5 7
6use HTTP::Date; 8use HTTP::Date;
9use POSIX ();
10
11use Compress::Zlib ();
7 12
8no utf8; 13no utf8;
9use bytes; 14use bytes;
10 15
11# at least on my machine, this thingy serves files 16# at least on my machine, this thingy serves files
… …
13# and quite a bit slower than thttpd :( 18# and quite a bit slower than thttpd :(
14 19
15$SIG{PIPE} = 'IGNORE'; 20$SIG{PIPE} = 'IGNORE';
16 21
17our $accesslog; 22our $accesslog;
23our $errorlog;
24
25our $NOW;
26our $HTTP_NOW;
27
28Event->timer(interval => 1, hard => 1, cb => sub {
29 $NOW = time;
30 $HTTP_NOW = time2str $NOW;
31})->now;
32
33if ($ERROR_LOG) {
34 use IO::Handle;
35 open $errorlog, ">>$ERROR_LOG"
36 or die "$ERROR_LOG: $!";
37 $errorlog->autoflush(1);
38}
18 39
19if ($ACCESS_LOG) { 40if ($ACCESS_LOG) {
20 use IO::Handle; 41 use IO::Handle;
21 open $accesslog, ">>$ACCESS_LOG" 42 open $accesslog, ">>$ACCESS_LOG"
22 or die "$ACCESS_LOG: $!"; 43 or die "$ACCESS_LOG: $!";
… …
24} 45}
25 46
26sub slog { 47sub slog {
27 my $level = shift; 48 my $level = shift;
28 my $format = shift; 49 my $format = shift;
50 my $NOW = (POSIX::strftime "%Y-%m-%d %H:%M:%S", gmtime $::NOW);
29 printf "---: $format\n", @_; 51 printf "$NOW: $format\n", @_;
52 printf $errorlog "$NOW: $format\n", @_ if $errorlog;
30} 53}
31 54
32our $connections = new Coro::Semaphore $MAX_CONNECTS || 250; 55our $connections = new Coro::Semaphore $MAX_CONNECTS || 250;
56our $httpevent = new Coro::Signal;
33 57
34our $wait_factor = 0.95; 58our $queue_file = new transferqueue $MAX_TRANSFERS;
59our $queue_index = new transferqueue 10;
35 60
36our @transfers = ( 61our $tbf_top = new tbf rate => $TBF_RATE || 100000;
37 [(new Coro::Semaphore $MAX_TRANSFERS_SMALL || 50), 1], 62
38 [(new Coro::Semaphore $MAX_TRANSFERS_LARGE || 50), 1], 63my $unused_bytes = 0;
39); 64my $unused_last = time;
65
66sub unused_bandwidth {
67 $unused_bytes += $_[0];
68 if ($unused_last < $NOW - 30 && $unused_bytes / ($NOW - $unused_last) > 50000) {
69 $unused_last = $NOW;
70 $unused_bytes = 0;
71 $queue_file->force_wake_next;
72 slog 1, "forced filetransfer due to unused bandwidth";
73 }
74}
40 75
41my @newcons; 76my @newcons;
42my @pool; 77my @pool;
43 78
44# one "execution thread" 79# one "execution thread"
… …
47 if (@newcons) { 82 if (@newcons) {
48 eval { 83 eval {
49 conn->new(@{pop @newcons})->handle; 84 conn->new(@{pop @newcons})->handle;
50 }; 85 };
51 slog 1, "$@" if $@ && !ref $@; 86 slog 1, "$@" if $@ && !ref $@;
87
88 $httpevent->broadcast; # only for testing, but doesn't matter much
89
52 $connections->up; 90 $connections->up;
53 } else { 91 } else {
54 last if @pool >= $MAX_POOL; 92 last if @pool >= $MAX_POOL;
55 push @pool, $Coro::current; 93 push @pool, $Coro::current;
56 schedule; 94 schedule;
… …
73 if (@pool) { 111 if (@pool) {
74 (pop @pool)->ready; 112 (pop @pool)->ready;
75 } else { 113 } else {
76 async \&handler; 114 async \&handler;
77 } 115 }
78
79 } 116 }
80 }; 117 };
81} 118}
82 119
83my $http_port = new Coro::Socket 120my $http_port = new Coro::Socket
… …
98 or die "unable to start server"; 135 or die "unable to start server";
99 136
100 listen_on $http_port; 137 listen_on $http_port;
101} 138}
102 139
103our $NOW;
104our $HTTP_NOW;
105
106Event->timer(interval => 1, hard => 1, cb => sub {
107 $NOW = time;
108 $HTTP_NOW = time2str $NOW;
109})->now;
110
111package conn; 140package conn;
112 141
113use Socket; 142use Socket;
114use HTTP::Date; 143use HTTP::Date;
115use Convert::Scalar 'weaken'; 144use Convert::Scalar 'weaken';
116use Linux::AIO; 145use IO::AIO;
117 146
118Linux::AIO::min_parallel $::AIO_PARALLEL; 147IO::AIO::min_parallel $::AIO_PARALLEL;
119 148
120Event->io(fd => Linux::AIO::poll_fileno, 149Event->io (fd => IO::AIO::poll_fileno,
121 poll => 'r', async => 1, 150 poll => 'r', async => 1,
122 cb => \&Linux::AIO::poll_cb); 151 cb => \&IO::AIO::poll_cb);
123 152
124our %conn; # $conn{ip}{self} => connobj 153our %conn; # $conn{ip}{self} => connobj
125our %uri; # $uri{ip}{uri}{self} 154our %uri; # $uri{ip}{uri}{self}
126our %blocked; 155our %blocked;
127our %mimetype; 156our %mimetype;
… …
147 my $peername = shift; 176 my $peername = shift;
148 my $self = bless { fh => $fh }, $class; 177 my $self = bless { fh => $fh }, $class;
149 my (undef, $iaddr) = unpack_sockaddr_in $peername 178 my (undef, $iaddr) = unpack_sockaddr_in $peername
150 or $self->err(500, "unable to decode peername"); 179 or $self->err(500, "unable to decode peername");
151 180
181 $self->{remote_addr} =
152 $self->{remote_addr} = inet_ntoa $iaddr; 182 $self->{remote_id} = inet_ntoa $iaddr;
183
153 $self->{time} = $::NOW; 184 $self->{time} = $::NOW;
154 185
186 weaken ($Coro::current->{conn} = $self);
187
155 $::conns++; 188 $::conns++;
189 $::maxconns = $::conns if $::conns > $::maxconns;
156 190
157 $self; 191 $self;
158} 192}
159 193
160sub DESTROY { 194sub DESTROY {
161 my $self = shift; 195 #my $self = shift;
162 $::conns--; 196 $::conns--;
163 $self->eoconn;
164} 197}
165 198
166# end of connection 199sub prune_cache {
167sub eoconn { 200 my $hash = $_[0];
168 my $self = shift;
169 201
170 # clean up hints 202 for (keys %$hash) {
171 delete $conn{$self->{remote_id}}{$self*1}; 203 if (ref $hash->{$_} eq HASH::) {
172 delete $uri{$self->{remote_id}}{$self->{uri}}{$self*1}; 204 prune_cache($hash->{$_});
205 unless (scalar keys %{$hash->{$_}}) {
206 delete $hash->{$_};
207 $d2++;
208 }
209 }
210 }
173} 211}
212
213sub prune_caches {
214 prune_cache \%conn;
215 prune_cache \%uri;
216
217 for (keys %blocked) {
218 delete $blocked{$_} unless $blocked{$_}[0] > $::NOW;
219 }
220}
221
222Event->timer(interval => 60, cb => \&prune_caches);
174 223
175sub slog { 224sub slog {
176 my $self = shift; 225 my $self = shift;
177 main::slog($_[0], ($self->{remote_id} || $self->{remote_addr}) ."> $_[1]"); 226 main::slog($_[0], "$self->{remote_id}> $_[1]");
178} 227}
179 228
180sub response { 229sub response {
181 my ($self, $code, $msg, $hdr, $content) = @_; 230 my ($self, $code, $msg, $hdr, $content) = @_;
182 my $res = "HTTP/1.1 $code $msg\015\012"; 231 my $res = "HTTP/1.1 $code $msg\015\012";
232 my $GZ = "";
183 233
184 $self->{h}{connection} = "close" if $hdr->{Connection} =~ /close/; 234 if (exists $hdr->{Connection}) {
235 if ($hdr->{Connection} =~ /close/) {
236 $self->{h}{connection} = "close"
237 }
238 } else {
239 if ($self->{version} < 1.1) {
240 if ($self->{h}{connection} =~ /keep-alive/i) {
241 $hdr->{Connection} = "Keep-Alive";
242 } else {
243 $self->{h}{connection} = "close"
244 }
245 }
246 }
247
248 if ($self->{method} ne "HEAD"
249 && $self->{h}{"accept-encoding"} =~ /\bgzip\b/
250 && 400 < length $content
251 && $hdr->{"Content-Length"} == length $content
252 && !exists $hdr->{"Content-Encoding"}
253 ) {
254 my $orig = length $content;
255 $hdr->{"Content-Encoding"} = "gzip";
256 $content = Compress::Zlib::memGzip(\$content);
257 $hdr->{"Content-Length"} = length $content;
258 $GZ = sprintf "GZ%02d", 100 - 100*((length $content) / $orig);
259 }
185 260
186 $res .= "Date: $HTTP_NOW\015\012"; 261 $res .= "Date: $HTTP_NOW\015\012";
262 $res .= "Server: $::NAME\015\012";
187 263
188 while (my ($h, $v) = each %$hdr) { 264 while (my ($h, $v) = each %$hdr) {
189 $res .= "$h: $v\015\012" 265 $res .= "$h: $v\015\012"
190 } 266 }
191 $res .= "\015\012"; 267 $res .= "\015\012";
192 268
193 $res .= $content if defined $content and $self->{method} ne "HEAD"; 269 $res .= $content if defined $content and $self->{method} ne "HEAD";
194 270
195 my $log = "$self->{remote_addr} \"$self->{uri}\" $code ".$hdr->{"Content-Length"}." \"$self->{h}{referer}\"\n"; 271 my $log = (POSIX::strftime "%Y-%m-%d %H:%M:%S", gmtime $::NOW).
272 " $self->{remote_id} \"$self->{uri}\" $code ".$hdr->{"Content-Length"}.$GZ.
273 " \"$self->{h}{referer}\"\n";
196 274
197 print $accesslog $log if $accesslog; 275 print $::accesslog $log if $::accesslog;
198 print STDERR $log; 276 print STDERR $log;
199 277
200 $self->{written} += 278 $tbf_top->request(length $res, 1e6);
201 print {$self->{fh}} $res; 279 $self->{written} += print {$self->{fh}} $res;
202} 280}
203 281
204sub err { 282sub err {
205 my $self = shift; 283 my $self = shift;
206 my ($code, $msg, $hdr, $content) = @_; 284 my ($code, $msg, $hdr, $content) = @_;
… …
261 my (%hdr, $h, $v); 339 my (%hdr, $h, $v);
262 340
263 $hdr{lc $1} .= ",$2" 341 $hdr{lc $1} .= ",$2"
264 while $req =~ /\G 342 while $req =~ /\G
265 ([^:\000-\040]+): 343 ([^:\000-\040]+):
266 [\008\040]* 344 [\011\040]*
267 ((?: [^\015\012]+ | \015\012[\008\040] )*) 345 ((?: [^\015\012]+ | \015\012[\011\040] )*)
268 \015\012 346 \015\012
269 /gxc; 347 /gxc;
270 348
271 $req =~ /\G\015\012$/ 349 $req =~ /\G\015\012$/
272 or $self->err(400, "bad request"); 350 or $self->err(400, "bad request");
… …
284 $id .= "[".$self->{h}{"x-forwarded-for"}."]"; 362 $id .= "[".$self->{h}{"x-forwarded-for"}."]";
285 } 363 }
286 364
287 $self->{remote_id} = $id; 365 $self->{remote_id} = $id;
288 366
367 weaken (local $conn{$id}{$self*1} = $self);
368
289 if ($blocked{$id}) { 369 if ($blocked{$id}) {
290 $self->err_blocked($blocked{$id}) 370 $self->err_blocked
291 if $blocked{$id} > $::NOW; 371 if $blocked{$id}[0] > $::NOW;
292 372
293 delete $blocked{$id}; 373 delete $blocked{$id};
294 }
295
296 if (%{$conn{$id}} >= $::MAX_CONN_IP) {
297 my $delay = $::PER_TIMEOUT + 15;
298 while (%{$conn{$id}} >= $::MAX_CONN_IP) {
299 if ($delay <= 0) {
300 $self->slog(2, "blocked ip $id");
301 $self->err_blocked;
302 } else {
303 Coro::Event::do_timer(after => 4); $delay -= 4;
304 }
305 }
306 } 374 }
307 375
308 # find out server name and port 376 # find out server name and port
309 if ($self->{uri} =~ s/^http:\/\/([^\/?#]*)//i) { 377 if ($self->{uri} =~ s/^http:\/\/([^\/?#]*)//i) {
310 $host = $1; 378 $host = $1;
… …
321 $host = inet_ntoa $host; 389 $host = inet_ntoa $host;
322 } 390 }
323 391
324 $self->{server_name} = $host; 392 $self->{server_name} = $host;
325 393
326 # enter ourselves into various lists
327 weaken ($conn{$id}{$self*1} = $self);
328 weaken ($uri{$id}{$self->{uri}}{$self*1} = $self); 394 weaken (local $uri{$id}{$self->{uri}}{$self*1} = $self);
329 395
330 eval { 396 eval {
331 $self->map_uri; 397 $self->map_uri;
332 $self->respond; 398 $self->respond;
333 }; 399 };
334 400
335 $self->eoconn;
336
337 die if $@ && !ref $@; 401 die if $@ && !ref $@;
338 402
339 last if $self->{h}{connection} =~ /close/ || $self->{version} < 1.1; 403 last if $self->{h}{connection} =~ /close/i;
404
405 $httpevent->broadcast;
340 406
341 $fh->timeout($::PER_TIMEOUT); 407 $fh->timeout($::PER_TIMEOUT);
342 } 408 }
409}
410
411sub block {
412 my $self = shift;
413
414 $blocked{$self->{remote_id}} = [$::NOW + $_[0], $_[1]];
415 $self->slog(2, "blocked ip $self->{remote_id}");
416 $self->err_blocked;
343} 417}
344 418
345# uri => path mapping 419# uri => path mapping
346sub map_uri { 420sub map_uri {
347 my $self = shift; 421 my $self = shift;
… …
394 468
395sub respond { 469sub respond {
396 my $self = shift; 470 my $self = shift;
397 my $path = $self->{path}; 471 my $path = $self->{path};
398 472
399 stat $path 473 if ($self->{name} =~ s%^/internal/([^/]+)%%) {
400 or $self->err(404, "not found"); 474 if ($::internal{$1}) {
401 475 $::internal{$1}->($self);
402 $self->{stat} = [stat _];
403
404 # idiotic netscape sends idiotic headers AGAIN
405 my $ims = $self->{h}{"if-modified-since"} =~ /^([^;]+)/
406 ? str2time $1 : 0;
407
408 if (-d _ && -r _) {
409 # directory
410 if ($path !~ /\/$/) {
411 # create a redirect to get the trailing "/"
412 # we don't try to avoid the :80
413 $self->err(301, "moved permanently", { Location => "http://".$self->server_hostport."$self->{uri}/" });
414 } else { 476 } else {
415 $ims < $self->{stat}[9] 477 $self->err(404, "not found");
478 }
479 } else {
480
481 stat $path
416 or $self->err(304, "not modified"); 482 or $self->err(404, "not found");
417 483
418 if (-r "$path/index.html") { 484 $self->{stat} = [stat _];
419 $self->{path} .= "/index.html"; 485
420 $self->handle_file; 486 # idiotic netscape sends idiotic headers AGAIN
487 my $ims = $self->{h}{"if-modified-since"} =~ /^([^;]+)/
488 ? str2time $1 : 0;
489
490 if (-d _ && -r _) {
491 # directory
492 if ($path !~ /\/$/) {
493 # create a redirect to get the trailing "/"
494 # we don't try to avoid the :80
495 $self->err(301, "moved permanently", { Location => "http://".$self->server_hostport."$self->{uri}/" });
421 } else { 496 } else {
497 $ims < $self->{stat}[9]
498 or $self->err(304, "not modified");
499
500 if (-r "$path/index.html") {
501 # replace directory "size" by index.html filesize
502 $self->{stat} = [stat ($self->{path} .= "/index.html")];
503 $self->handle_file($queue_index, $tbf_top);
504 } else {
422 $self->handle_dir; 505 $self->handle_dir;
423 } 506 }
424 } 507 }
425 } elsif (-f _ && -r _) { 508 } elsif (-f _ && -r _) {
426 -x _ and $self->err(403, "forbidden"); 509 -x _ and $self->err(403, "forbidden");
427 $self->handle_file; 510
511 if (keys %{$conn{$self->{remote_id}}} > $::MAX_TRANSFERS_IP) {
512 my $timeout = $::NOW + 10;
513 while (keys %{$conn{$self->{remote_id}}} > $::MAX_TRANSFERS_IP) {
514 if ($timeout < $::NOW) {
515 $self->block($::BLOCKTIME, "too many connections");
516 } else {
517 $httpevent->wait;
518 }
519 }
520 }
521
522 $self->handle_file($queue_file, $tbf_top);
428 } else { 523 } else {
429 $self->err(404, "not found"); 524 $self->err(404, "not found");
525 }
430 } 526 }
431} 527}
432 528
433sub handle_dir { 529sub handle_dir {
434 my $self = shift; 530 my $self = shift;
435 my $idx = $self->diridx; 531 my $idx = $self->diridx;
436 532
437 $self->response(200, "ok", 533 $self->response(200, "ok",
438 { 534 {
439 "Content-Type" => "text/html", 535 "Content-Type" => "text/html; charset=utf-8",
440 "Content-Length" => length $idx, 536 "Content-Length" => length $idx,
537 "Last-Modified" => time2str ($self->{stat}[9]),
441 }, 538 },
442 $idx); 539 $idx);
443} 540}
444 541
445sub handle_file { 542sub handle_file {
446 my $self = shift; 543 my ($self, $queue, $tbf) = @_;
447 my $length = $self->{stat}[7]; 544 my $length = $self->{stat}[7];
448 my $queue = $::transfers[$length >= $::TRANSFER_SMALL];
449 my $hdr = { 545 my $hdr = {
450 "Last-Modified" => time2str ((stat _)[9]), 546 "Last-Modified" => time2str ((stat _)[9]),
547 "Accept-Ranges" => "bytes",
451 }; 548 };
452 549
453 my @code = (200, "ok"); 550 my @code = (200, "ok");
454 my ($l, $h); 551 my ($l, $h);
455 552
… …
470 $self->err(416, "not satisfiable", $hdr, ""); 567 $self->err(416, "not satisfiable", $hdr, "");
471 568
472satisfiable: 569satisfiable:
473 # check for segmented downloads 570 # check for segmented downloads
474 if ($l && $::NO_SEGMENTED) { 571 if ($l && $::NO_SEGMENTED) {
475 my $delay = $::PER_TIMEOUT + 15; 572 my $timeout = $::NOW + 15;
476 while (%{$uri{$self->{remote_id}}{$self->{uri}}} > 1) { 573 while (keys %{$uri{$self->{remote_id}}{$self->{uri}}} > 1) {
477 if ($delay <= 0) { 574 if ($timeout <= $::NOW) {
575 $self->block($::BLOCKTIME, "segmented downloads are forbidden");
478 $self->err_segmented_download; 576 #$self->err_segmented_download;
479 } else { 577 } else {
480 Coro::Event::do_timer(after => 4); $delay -= 4; 578 $httpevent->wait;
481 } 579 }
482 } 580 }
483 } 581 }
484 582
485 $hdr->{"Content-Range"} = "bytes $l-$h/$length"; 583 $hdr->{"Content-Range"} = "bytes $l-$h/$length";
… …
497 595
498 $self->response(@code, $hdr, ""); 596 $self->response(@code, $hdr, "");
499 597
500 if ($self->{method} eq "GET") { 598 if ($self->{method} eq "GET") {
501 $self->{time} = $::NOW; 599 $self->{time} = $::NOW;
502
503 my $fudge = $queue->[0]->waiters;
504 $fudge = $fudge ? ($fudge+1)/$fudge : 1;
505
506 $queue->[1] *= $fudge;
507 my $transfer = $queue->[0]->guard;
508
509 if ($fudge != 1) {
510 $queue->[1] /= $fudge;
511 $queue->[1] = $queue->[1] * $::wait_factor
512 + ($::NOW - $self->{time}) * (1 - $::wait_factor);
513 }
514 $self->{time} = $::NOW; 600 $self->{written} = 0;
515 601
516 $self->{fh}->writable or return; 602 my $current = $Coro::current;
517 603
518 my ($fh, $buf, $r); 604 my ($fh, $buf, $r);
519 my $current = $Coro::current; 605
520 open $fh, "<", $self->{path} 606 open $fh, "<", $self->{path}
521 or die "$self->{path}: late open failure ($!)"; 607 or die "$self->{path}: late open failure ($!)";
522 608
523 $h -= $l - 1; 609 $h -= $l - 1;
524 610
525 if (0) { 611 if (0) { # !AIO
526 if ($l) { 612 if ($l) {
527 sysseek $fh, $l, 0; 613 sysseek $fh, $l, 0;
528 } 614 }
529 } 615 }
616
617 my $transfer = $queue->start_transfer($h);
618 my $locked;
619 my $bufsize = $::WAIT_BUFSIZE; # initial buffer size
530 620
531 while ($h > 0) { 621 while ($h > 0) {
532 if (0) { 622 unless ($locked) {
533 sysread $fh, $buf, $h > $::BUFSIZE ? $::BUFSIZE : $h 623 if ($locked ||= $transfer->try($::WAIT_INTERVAL)) {
624 $bufsize = $::BUFSIZE;
625 $self->{time} = $::NOW;
626 $self->{written} = 0;
627 }
628 }
629
630 if ($blocked{$self->{remote_id}}) {
631 $self->{h}{connection} = "close";
632 die bless {}, err::;
633 }
634
635 Coro::AIO::aio_read $fh, $l, ($h > $bufsize ? $bufsize : $h), $buf, 0
534 or last; 636 or last;
535 } else { 637
536 aio_read($fh, $l, ($h > $::BUFSIZE ? $::BUFSIZE : $h), 638 $tbf->request (length $buf);
537 $buf, 0, sub {
538 $r = $_[0];
539 Coro::ready($current);
540 });
541 &Coro::schedule;
542 last unless $r;
543 }
544 my $w = syswrite $self->{fh}, $buf 639 my $w = syswrite $self->{fh}, $buf
545 or last; 640 or last;
546 $::written += $w; 641 $::written += $w;
547 $self->{written} += $w; 642 $self->{written} += $w;
548 $l += $r; 643 $l += $r;
… …
550 645
551 close $fh; 646 close $fh;
552 } 647 }
553} 648}
554 649
5551; 6501
651

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