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Comparing Coro/myhttpd/httpd.pl (file contents):
Revision 1.46 by root, Sat Nov 17 04:15:23 2001 UTC vs.
Revision 1.72 by root, Tue Sep 10 03:08:03 2002 UTC

… …
3use Coro::Event; 3use Coro::Event;
4use Coro::Socket; 4use Coro::Socket;
5use Coro::Signal; 5use Coro::Signal;
6 6
7use HTTP::Date; 7use HTTP::Date;
8use POSIX ();
9
10use Compress::Zlib ();
8 11
9no utf8; 12no utf8;
10use bytes; 13use bytes;
11 14
12# at least on my machine, this thingy serves files 15# at least on my machine, this thingy serves files
… …
14# and quite a bit slower than thttpd :( 17# and quite a bit slower than thttpd :(
15 18
16$SIG{PIPE} = 'IGNORE'; 19$SIG{PIPE} = 'IGNORE';
17 20
18our $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 $errorlog->autoflush(1);
37}
19 38
20if ($ACCESS_LOG) { 39if ($ACCESS_LOG) {
21 use IO::Handle; 40 use IO::Handle;
22 open $accesslog, ">>$ACCESS_LOG" 41 open $accesslog, ">>$ACCESS_LOG"
23 or die "$ACCESS_LOG: $!"; 42 or die "$ACCESS_LOG: $!";
… …
25} 44}
26 45
27sub slog { 46sub slog {
28 my $level = shift; 47 my $level = shift;
29 my $format = shift; 48 my $format = shift;
49 my $NOW = (POSIX::strftime "%Y-%m-%d %H:%M:%S", gmtime $::NOW);
30 printf "---: $format\n", @_; 50 printf "$NOW: $format\n", @_;
51 printf $errorlog "$NOW: $format\n", @_ if $errorlog;
31} 52}
32 53
33our $connections = new Coro::Semaphore $MAX_CONNECTS || 250; 54our $connections = new Coro::Semaphore $MAX_CONNECTS || 250;
34our $httpevent = new Coro::Signal; 55our $httpevent = new Coro::Signal;
35 56
36our $wait_factor = 0.95; 57our $queue_file = new transferqueue $MAX_TRANSFERS;
58our $queue_index = new transferqueue 10;
37 59
38our @transfers = ( 60our $tbf_top = new tbf rate => $TBF_RATE || 100000;
39 [(new Coro::Semaphore $MAX_TRANSFERS_SMALL || 50), 1], 61
40 [(new Coro::Semaphore $MAX_TRANSFERS_LARGE || 50), 1], 62my $unused_bytes = 0;
41); 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 $queue_file->force_wake_next;
71 slog 1, "forced filetransfer due to unused bandwidth";
72 }
73}
42 74
43my @newcons; 75my @newcons;
44my @pool; 76my @pool;
45 77
46# one "execution thread" 78# one "execution thread"
… …
49 if (@newcons) { 81 if (@newcons) {
50 eval { 82 eval {
51 conn->new(@{pop @newcons})->handle; 83 conn->new(@{pop @newcons})->handle;
52 }; 84 };
53 slog 1, "$@" if $@ && !ref $@; 85 slog 1, "$@" if $@ && !ref $@;
86
87 $httpevent->broadcast; # only for testing, but doesn't matter much
88
54 $connections->up; 89 $connections->up;
55 } else { 90 } else {
56 last if @pool >= $MAX_POOL; 91 last if @pool >= $MAX_POOL;
57 push @pool, $Coro::current; 92 push @pool, $Coro::current;
58 schedule; 93 schedule;
… …
75 if (@pool) { 110 if (@pool) {
76 (pop @pool)->ready; 111 (pop @pool)->ready;
77 } else { 112 } else {
78 async \&handler; 113 async \&handler;
79 } 114 }
80
81 } 115 }
82 }; 116 };
83} 117}
84 118
85my $http_port = new Coro::Socket 119my $http_port = new Coro::Socket
… …
100 or die "unable to start server"; 134 or die "unable to start server";
101 135
102 listen_on $http_port; 136 listen_on $http_port;
103} 137}
104 138
105our $NOW;
106our $HTTP_NOW;
107
108Event->timer(interval => 1, hard => 1, cb => sub {
109 $NOW = time;
110 $HTTP_NOW = time2str $NOW;
111})->now;
112
113package conn; 139package conn;
114 140
115use Socket; 141use Socket;
116use HTTP::Date; 142use HTTP::Date;
117use Convert::Scalar 'weaken'; 143use Convert::Scalar 'weaken';
… …
149 my $peername = shift; 175 my $peername = shift;
150 my $self = bless { fh => $fh }, $class; 176 my $self = bless { fh => $fh }, $class;
151 my (undef, $iaddr) = unpack_sockaddr_in $peername 177 my (undef, $iaddr) = unpack_sockaddr_in $peername
152 or $self->err(500, "unable to decode peername"); 178 or $self->err(500, "unable to decode peername");
153 179
180 $self->{remote_addr} =
154 $self->{remote_addr} = inet_ntoa $iaddr; 181 $self->{remote_id} = inet_ntoa $iaddr;
182
155 $self->{time} = $::NOW; 183 $self->{time} = $::NOW;
156 184
185 weaken ($Coro::current->{conn} = $self);
186
157 $::conns++; 187 $::conns++;
188 $::maxconns = $::conns if $::conns > $::maxconns;
158 189
159 $self; 190 $self;
160} 191}
161 192
162sub DESTROY { 193sub DESTROY {
163 my $self = shift; 194 #my $self = shift;
164 $::conns--; 195 $::conns--;
165 $self->eoconn;
166}
167
168# end of connection
169sub eoconn {
170 my $self = shift;
171
172 # clean up hints
173 delete $conn{$self->{remote_id}}{$self*1};
174 delete $uri{$self->{remote_id}}{$self->{uri}}{$self*1};
175
176 $httpevent->broadcast;
177} 196}
178 197
179sub slog { 198sub slog {
180 my $self = shift; 199 my $self = shift;
181 main::slog($_[0], ($self->{remote_id} || $self->{remote_addr}) ."> $_[1]"); 200 main::slog($_[0], "$self->{remote_id}> $_[1]");
182} 201}
183 202
184sub response { 203sub response {
185 my ($self, $code, $msg, $hdr, $content) = @_; 204 my ($self, $code, $msg, $hdr, $content) = @_;
186 my $res = "HTTP/1.1 $code $msg\015\012"; 205 my $res = "HTTP/1.1 $code $msg\015\012";
206 my $GZ = "";
187 207
188 if (exists $hdr->{Connection}) { 208 if (exists $hdr->{Connection}) {
189 if ($hdr->{Connection} =~ /close/) { 209 if ($hdr->{Connection} =~ /close/) {
190 $self->{h}{connection} = "close" 210 $self->{h}{connection} = "close"
191 } 211 }
… …
197 $self->{h}{connection} = "close" 217 $self->{h}{connection} = "close"
198 } 218 }
199 } 219 }
200 } 220 }
201 221
222 if ($self->{method} ne "HEAD"
223 && $self->{h}{"accept-encoding"} =~ /\bgzip\b/
224 && 400 < length $content
225 && $hdr->{"Content-Length"} == length $content
226 && !exists $hdr->{"Content-Encoding"}
227 ) {
228 my $orig = length $content;
229 $hdr->{"Content-Encoding"} = "gzip";
230 $content = Compress::Zlib::memGzip(\$content);
231 $hdr->{"Content-Length"} = length $content;
232 $GZ = sprintf "GZ%02d", 100 - 100*((length $content) / $orig);
233 }
234
202 $res .= "Date: $HTTP_NOW\015\012"; 235 $res .= "Date: $HTTP_NOW\015\012";
236 $res .= "Server: $::NAME\015\012";
203 237
204 while (my ($h, $v) = each %$hdr) { 238 while (my ($h, $v) = each %$hdr) {
205 $res .= "$h: $v\015\012" 239 $res .= "$h: $v\015\012"
206 } 240 }
207 $res .= "\015\012"; 241 $res .= "\015\012";
208 242
209 $res .= $content if defined $content and $self->{method} ne "HEAD"; 243 $res .= $content if defined $content and $self->{method} ne "HEAD";
210 244
211 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";
212 248
213 print $accesslog $log if $accesslog; 249 print $::accesslog $log if $::accesslog;
214 print STDERR $log; 250 print STDERR $log;
215 251
216 $self->{written} += 252 $tbf_top->request(length $res, 1e6);
217 print {$self->{fh}} $res; 253 $self->{written} += print {$self->{fh}} $res;
218} 254}
219 255
220sub err { 256sub err {
221 my $self = shift; 257 my $self = shift;
222 my ($code, $msg, $hdr, $content) = @_; 258 my ($code, $msg, $hdr, $content) = @_;
… …
277 my (%hdr, $h, $v); 313 my (%hdr, $h, $v);
278 314
279 $hdr{lc $1} .= ",$2" 315 $hdr{lc $1} .= ",$2"
280 while $req =~ /\G 316 while $req =~ /\G
281 ([^:\000-\040]+): 317 ([^:\000-\040]+):
282 [\008\040]* 318 [\011\040]*
283 ((?: [^\015\012]+ | \015\012[\008\040] )*) 319 ((?: [^\015\012]+ | \015\012[\011\040] )*)
284 \015\012 320 \015\012
285 /gxc; 321 /gxc;
286 322
287 $req =~ /\G\015\012$/ 323 $req =~ /\G\015\012$/
288 or $self->err(400, "bad request"); 324 or $self->err(400, "bad request");
… …
300 $id .= "[".$self->{h}{"x-forwarded-for"}."]"; 336 $id .= "[".$self->{h}{"x-forwarded-for"}."]";
301 } 337 }
302 338
303 $self->{remote_id} = $id; 339 $self->{remote_id} = $id;
304 340
341 weaken (local $conn{$id}{$self*1} = $self);
342
305 if ($blocked{$id}) { 343 if ($blocked{$id}) {
306 $self->err_blocked($blocked{$id}) 344 $self->err_blocked
307 if $blocked{$id} > $::NOW; 345 if $blocked{$id}[0] > $::NOW;
308 346
309 delete $blocked{$id}; 347 delete $blocked{$id};
310 }
311
312 if (%{$conn{$id}} >= $::MAX_CONN_IP) {
313 my $delay = $::PER_TIMEOUT + $::NOW + 15;
314 while (%{$conn{$id}} >= $::MAX_CONN_IP) {
315 if ($delay < $::NOW) {
316 $self->slog(2, "blocked ip $id");
317 $self->err_blocked;
318 } else {
319 $httpevent->wait;
320 }
321 }
322 } 348 }
323 349
324 # find out server name and port 350 # find out server name and port
325 if ($self->{uri} =~ s/^http:\/\/([^\/?#]*)//i) { 351 if ($self->{uri} =~ s/^http:\/\/([^\/?#]*)//i) {
326 $host = $1; 352 $host = $1;
… …
337 $host = inet_ntoa $host; 363 $host = inet_ntoa $host;
338 } 364 }
339 365
340 $self->{server_name} = $host; 366 $self->{server_name} = $host;
341 367
342 # enter ourselves into various lists
343 weaken ($conn{$id}{$self*1} = $self);
344 weaken ($uri{$id}{$self->{uri}}{$self*1} = $self); 368 weaken (local $uri{$id}{$self->{uri}}{$self*1} = $self);
345 369
346 eval { 370 eval {
347 $self->map_uri; 371 $self->map_uri;
348 $self->respond; 372 $self->respond;
349 }; 373 };
350 374
351 $self->eoconn;
352
353 die if $@ && !ref $@; 375 die if $@ && !ref $@;
354 376
355 last if $self->{h}{connection} =~ /close/; 377 last if $self->{h}{connection} =~ /close/i;
356 378
357 $httpevent->broadcast; 379 $httpevent->broadcast;
358 380
359 $fh->timeout($::PER_TIMEOUT); 381 $fh->timeout($::PER_TIMEOUT);
360 } 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;
361} 391}
362 392
363# uri => path mapping 393# uri => path mapping
364sub map_uri { 394sub map_uri {
365 my $self = shift; 395 my $self = shift;
… …
412 442
413sub respond { 443sub respond {
414 my $self = shift; 444 my $self = shift;
415 my $path = $self->{path}; 445 my $path = $self->{path};
416 446
417 stat $path 447 if ($self->{name} =~ s%^/internal/([^/]+)%%) {
418 or $self->err(404, "not found"); 448 if ($::internal{$1}) {
419 449 $::internal{$1}->($self);
420 $self->{stat} = [stat _];
421
422 # idiotic netscape sends idiotic headers AGAIN
423 my $ims = $self->{h}{"if-modified-since"} =~ /^([^;]+)/
424 ? str2time $1 : 0;
425
426 if (-d _ && -r _) {
427 # directory
428 if ($path !~ /\/$/) {
429 # create a redirect to get the trailing "/"
430 # we don't try to avoid the :80
431 $self->err(301, "moved permanently", { Location => "http://".$self->server_hostport."$self->{uri}/" });
432 } else { 450 } else {
433 $ims < $self->{stat}[9] 451 $self->err(404, "not found");
452 }
453 } else {
454
455 stat $path
434 or $self->err(304, "not modified"); 456 or $self->err(404, "not found");
435 457
436 if (-r "$path/index.html") { 458 $self->{stat} = [stat _];
437 # replace directory "size" by index.html filesize 459
438 $self->{stat}[7] = (stat ($self->{path} .= "/index.html"))[7]; 460 # idiotic netscape sends idiotic headers AGAIN
439 $self->handle_file; 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}/" });
440 } 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 {
441 $self->handle_dir; 479 $self->handle_dir;
442 } 480 }
443 } 481 }
444 } elsif (-f _ && -r _) { 482 } elsif (-f _ && -r _) {
445 -x _ and $self->err(403, "forbidden"); 483 -x _ and $self->err(403, "forbidden");
446 $self->handle_file; 484
485 if (keys %{$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);
447 } else { 497 } else {
448 $self->err(404, "not found"); 498 $self->err(404, "not found");
499 }
449 } 500 }
450} 501}
451 502
452sub handle_dir { 503sub handle_dir {
453 my $self = shift; 504 my $self = shift;
… …
455 506
456 $self->response(200, "ok", 507 $self->response(200, "ok",
457 { 508 {
458 "Content-Type" => "text/html", 509 "Content-Type" => "text/html",
459 "Content-Length" => length $idx, 510 "Content-Length" => length $idx,
511 "Last-Modified" => time2str ($self->{stat}[9]),
460 }, 512 },
461 $idx); 513 $idx);
462} 514}
463 515
464sub handle_file { 516sub handle_file {
465 my $self = shift; 517 my ($self, $queue, $tbf) = @_;
466 my $length = $self->{stat}[7]; 518 my $length = $self->{stat}[7];
467 my $queue = $::transfers[$length >= $::TRANSFER_SMALL];
468 my $hdr = { 519 my $hdr = {
469 "Last-Modified" => time2str ((stat _)[9]), 520 "Last-Modified" => time2str ((stat _)[9]),
470 }; 521 };
471 522
472 my @code = (200, "ok"); 523 my @code = (200, "ok");
… …
489 $self->err(416, "not satisfiable", $hdr, ""); 540 $self->err(416, "not satisfiable", $hdr, "");
490 541
491satisfiable: 542satisfiable:
492 # check for segmented downloads 543 # check for segmented downloads
493 if ($l && $::NO_SEGMENTED) { 544 if ($l && $::NO_SEGMENTED) {
494 my $delay = $::NOW + $::PER_TIMEOUT + 15; 545 my $timeout = $::NOW + 15;
495 while (%{$uri{$self->{remote_id}}{$self->{uri}}} > 1) { 546 while (keys %{$uri{$self->{remote_id}}{$self->{uri}}} > 1) {
496 if ($delay <= $::NOW) { 547 if ($timeout <= $::NOW) {
548 $self->block($::BLOCKTIME, "segmented downloads are forbidden");
497 $self->err_segmented_download; 549 #$self->err_segmented_download;
498 } else { 550 } else {
499 $httpevent->wait; 551 $httpevent->wait;
500 } 552 }
501 } 553 }
502 } 554 }
… …
516 568
517 $self->response(@code, $hdr, ""); 569 $self->response(@code, $hdr, "");
518 570
519 if ($self->{method} eq "GET") { 571 if ($self->{method} eq "GET") {
520 $self->{time} = $::NOW; 572 $self->{time} = $::NOW;
521
522 my $fudge = $queue->[0]->waiters;
523 $fudge = $fudge ? ($fudge+1)/$fudge : 1;
524
525 $queue->[1] *= $fudge;
526 my $transfer = $queue->[0]->guard;
527
528 if ($fudge != 1) {
529 $queue->[1] /= $fudge;
530 $queue->[1] = $queue->[1] * $::wait_factor
531 + ($::NOW - $self->{time}) * (1 - $::wait_factor);
532 }
533 $self->{time} = $::NOW; 573 $self->{written} = 0;
534 574
535 $self->{fh}->writable or return; 575 my $current = $Coro::current;
536 576
537 my ($fh, $buf, $r); 577 my ($fh, $buf, $r);
538 my $current = $Coro::current; 578
539 open $fh, "<", $self->{path} 579 open $fh, "<", $self->{path}
540 or die "$self->{path}: late open failure ($!)"; 580 or die "$self->{path}: late open failure ($!)";
541 581
542 $h -= $l - 1; 582 $h -= $l - 1;
543 583
544 if (0) { 584 if (0) { # !AIO
545 if ($l) { 585 if ($l) {
546 sysseek $fh, $l, 0; 586 sysseek $fh, $l, 0;
547 } 587 }
548 } 588 }
589
590 my $transfer = $queue->start_transfer($h);
591 my $locked;
592 my $bufsize = $::WAIT_BUFSIZE; # initial buffer size
549 593
550 while ($h > 0) { 594 while ($h > 0) {
595 unless ($locked) {
596 if ($locked ||= $transfer->try($::WAIT_INTERVAL)) {
597 $bufsize = $::BUFSIZE;
598 $self->{time} = $::NOW;
599 $self->{written} = 0;
600 }
601 }
602
603 if ($blocked{$self->{remote_id}}) {
604 $self->{h}{connection} = "close";
605 die bless {}, err::;
606 }
607
551 if (0) { 608 if (0) { # !AIO
552 sysread $fh, $buf, $h > $::BUFSIZE ? $::BUFSIZE : $h 609 sysread $fh, $buf, $h > $bufsize ? $bufsize : $h
553 or last; 610 or last;
554 } else { 611 } else {
555 aio_read($fh, $l, ($h > $::BUFSIZE ? $::BUFSIZE : $h), 612 aio_read($fh, $l, ($h > $bufsize ? $bufsize : $h),
556 $buf, 0, sub { 613 $buf, 0, sub {
557 $r = $_[0]; 614 $r = $_[0];
558 Coro::ready($current); 615 Coro::ready($current);
559 }); 616 });
560 &Coro::schedule; 617 &Coro::schedule;
561 last unless $r; 618 last unless $r;
562 } 619 }
620
621 $tbf->request(length $buf);
563 my $w = syswrite $self->{fh}, $buf 622 my $w = syswrite $self->{fh}, $buf
564 or last; 623 or last;
565 $::written += $w; 624 $::written += $w;
566 $self->{written} += $w; 625 $self->{written} += $w;
567 $l += $r; 626 $l += $r;

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