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Comparing Coro/myhttpd/httpd.pl (file contents):
Revision 1.37 by root, Sun Sep 2 01:03:53 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"
45sub handler { 79sub handler {
46 while () { 80 while () {
47 my $new = pop @newcons;
48 if ($new) { 81 if (@newcons) {
49 eval { 82 eval {
50 conn->new(@$new)->handle; 83 conn->new(@{pop @newcons})->handle;
51 }; 84 };
52 slog 1, "$@" if $@ && !ref $@; 85 slog 1, "$@" if $@ && !ref $@;
86
87 $httpevent->broadcast; # only for testing, but doesn't matter much
88
53 $connections->up; 89 $connections->up;
54 } else { 90 } else {
55 last if @pool >= $MAX_POOL; 91 last if @pool >= $MAX_POOL;
56 push @pool, $Coro::current; 92 push @pool, $Coro::current;
57 schedule; 93 schedule;
58 } 94 }
59 } 95 }
96}
97
98sub listen_on {
99 my $listen = $_[0];
100
101 push @listen_sockets, $listen;
102
103 # the "main thread"
104 async {
105 slog 1, "accepting connections";
106 while () {
107 $connections->down;
108 push @newcons, [$listen->accept];
109 #slog 3, "accepted @$connections ".scalar(@pool);
110 if (@pool) {
111 (pop @pool)->ready;
112 } else {
113 async \&handler;
114 }
115
116 }
117 };
60} 118}
61 119
62my $http_port = new Coro::Socket 120my $http_port = new Coro::Socket
63 LocalAddr => $SERVER_HOST, 121 LocalAddr => $SERVER_HOST,
64 LocalPort => $SERVER_PORT, 122 LocalPort => $SERVER_PORT,
65 ReuseAddr => 1, 123 ReuseAddr => 1,
66 Listen => 50, 124 Listen => 50,
67 or die "unable to start server"; 125 or die "unable to start server";
68 126
69push @listen_sockets, $http_port; 127listen_on $http_port;
70 128
71our $NOW; 129if ($SERVER_PORT2) {
72our $HTTP_NOW; 130 my $http_port = new Coro::Socket
131 LocalAddr => $SERVER_HOST,
132 LocalPort => $SERVER_PORT2,
133 ReuseAddr => 1,
134 Listen => 50,
135 or die "unable to start server";
73 136
74Event->timer(interval => 1, hard => 1, cb => sub { 137 listen_on $http_port;
75 $NOW = time; 138}
76 $HTTP_NOW = time2str $NOW;
77})->now;
78
79# the "main thread"
80async {
81 slog 1, "accepting connections";
82 while () {
83 $connections->down;
84 push @newcons, [$http_port->accept];
85 #slog 3, "accepted @$connections ".scalar(@pool);
86 if (@pool) {
87 (pop @pool)->ready;
88 } else {
89 async \&handler;
90 }
91
92 }
93};
94 139
95package conn; 140package conn;
96 141
97use Socket; 142use Socket;
98use HTTP::Date; 143use HTTP::Date;
… …
125 170
126read_mimetypes; 171read_mimetypes;
127 172
128sub new { 173sub new {
129 my $class = shift; 174 my $class = shift;
175 my $fh = shift;
130 my $peername = shift; 176 my $peername = shift;
131 my $fh = shift;
132 my $self = bless { fh => $fh }, $class; 177 my $self = bless { fh => $fh }, $class;
133 my (undef, $iaddr) = unpack_sockaddr_in $peername 178 my (undef, $iaddr) = unpack_sockaddr_in $peername
134 or $self->err(500, "unable to decode peername"); 179 or $self->err(500, "unable to decode peername");
135 180
181 $self->{remote_addr} =
136 $self->{remote_addr} = inet_ntoa $iaddr; 182 $self->{remote_id} = inet_ntoa $iaddr;
183
137 $self->{time} = $::NOW; 184 $self->{time} = $::NOW;
138 185
186 weaken ($Coro::current->{conn} = $self);
187
139 $::conns++; 188 $::conns++;
189 $::maxconns = $::conns if $::conns > $::maxconns;
140 190
141 $self; 191 $self;
142} 192}
143 193
144sub DESTROY { 194sub DESTROY {
145 my $self = shift; 195 #my $self = shift;
146
147 $::conns--; 196 $::conns--;
148
149 $self->eoconn;
150}
151
152# end of connection
153sub eoconn {
154 my $self = shift;
155
156 # clean up hints
157 delete $conn{$self->{remote_id}}{$self*1};
158 delete $uri{$self->{remote_id}}{$self->{uri}}{$self*1};
159} 197}
160 198
161sub slog { 199sub slog {
162 my $self = shift; 200 my $self = shift;
163 main::slog($_[0], ($self->{remote_id} || $self->{remote_addr}) ."> $_[1]"); 201 main::slog($_[0], "$self->{remote_id}> $_[1]");
164} 202}
165 203
166sub response { 204sub response {
167 my ($self, $code, $msg, $hdr, $content) = @_; 205 my ($self, $code, $msg, $hdr, $content) = @_;
168 my $res = "HTTP/1.1 $code $msg\015\012"; 206 my $res = "HTTP/1.1 $code $msg\015\012";
207 my $GZ = "";
169 208
170 $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 }
171 235
172 $res .= "Date: $HTTP_NOW\015\012"; 236 $res .= "Date: $HTTP_NOW\015\012";
173 237
174 while (my ($h, $v) = each %$hdr) { 238 while (my ($h, $v) = each %$hdr) {
175 $res .= "$h: $v\015\012" 239 $res .= "$h: $v\015\012"
176 } 240 }
177 $res .= "\015\012"; 241 $res .= "\015\012";
178 242
179 $res .= $content if defined $content and $self->{method} ne "HEAD"; 243 $res .= $content if defined $content and $self->{method} ne "HEAD";
180 244
181 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";
182 248
183 print $accesslog $log if $accesslog; 249 print $::accesslog $log if $::accesslog;
184 print STDERR $log; 250 print STDERR $log;
185 251
186 $self->{written} += 252 $tbf_top->request(length $res, 1e6);
187 print {$self->{fh}} $res; 253 $self->{written} += print {$self->{fh}} $res;
188} 254}
189 255
190sub err { 256sub err {
191 my $self = shift; 257 my $self = shift;
192 my ($code, $msg, $hdr, $content) = @_; 258 my ($code, $msg, $hdr, $content) = @_;
… …
247 my (%hdr, $h, $v); 313 my (%hdr, $h, $v);
248 314
249 $hdr{lc $1} .= ",$2" 315 $hdr{lc $1} .= ",$2"
250 while $req =~ /\G 316 while $req =~ /\G
251 ([^:\000-\040]+): 317 ([^:\000-\040]+):
252 [\008\040]* 318 [\011\040]*
253 ((?: [^\015\012]+ | \015\012[\008\040] )*) 319 ((?: [^\015\012]+ | \015\012[\011\040] )*)
254 \015\012 320 \015\012
255 /gxc; 321 /gxc;
256 322
257 $req =~ /\G\015\012$/ 323 $req =~ /\G\015\012$/
258 or $self->err(400, "bad request"); 324 or $self->err(400, "bad request");
… …
270 $id .= "[".$self->{h}{"x-forwarded-for"}."]"; 336 $id .= "[".$self->{h}{"x-forwarded-for"}."]";
271 } 337 }
272 338
273 $self->{remote_id} = $id; 339 $self->{remote_id} = $id;
274 340
341 weaken (local $conn{$id}{$self*1} = $self);
342
275 if ($blocked{$id}) { 343 if ($blocked{$id}) {
276 $self->err_blocked($blocked{$id}) 344 $self->err_blocked
277 if $blocked{$id} > $::NOW; 345 if $blocked{$id}[0] > $::NOW;
278 346
279 delete $blocked{$id}; 347 delete $blocked{$id};
280 }
281
282 if (%{$conn{$id}} >= $::MAX_CONN_IP) {
283 my $delay = $::PER_TIMEOUT + 15;
284 while (%{$conn{$id}} >= $::MAX_CONN_IP) {
285 if ($delay <= 0) {
286 $self->slog(2, "blocked ip $id");
287 $self->err_blocked;
288 } else {
289 Coro::Event::do_timer(after => 4); $delay -= 4;
290 }
291 }
292 } 348 }
293 349
294 # find out server name and port 350 # find out server name and port
295 if ($self->{uri} =~ s/^http:\/\/([^\/?#]*)//i) { 351 if ($self->{uri} =~ s/^http:\/\/([^\/?#]*)//i) {
296 $host = $1; 352 $host = $1;
… …
300 356
301 if (defined $host) { 357 if (defined $host) {
302 $self->{server_port} = $host =~ s/:([0-9]+)$// ? $1 : 80; 358 $self->{server_port} = $host =~ s/:([0-9]+)$// ? $1 : 80;
303 } else { 359 } else {
304 ($self->{server_port}, $host) 360 ($self->{server_port}, $host)
305 = unpack_sockaddr_in $self->{fh}->getsockname 361 = unpack_sockaddr_in $self->{fh}->sockname
306 or $self->err(500, "unable to get socket name"); 362 or $self->err(500, "unable to get socket name");
307 $host = inet_ntoa $host; 363 $host = inet_ntoa $host;
308 } 364 }
309 365
310 $self->{server_name} = $host; 366 $self->{server_name} = $host;
311 367
312 # enter ourselves into various lists
313 weaken ($conn{$id}{$self*1} = $self);
314 weaken ($uri{$id}{$self->{uri}}{$self*1} = $self); 368 weaken (local $uri{$id}{$self->{uri}}{$self*1} = $self);
315 369
316 eval { 370 eval {
317 $self->map_uri; 371 $self->map_uri;
318 $self->respond; 372 $self->respond;
319 }; 373 };
320 374
321 $self->eoconn;
322
323 die if $@ && !ref $@; 375 die if $@ && !ref $@;
324 376
325 last if $self->{h}{connection} =~ /close/ || $self->{version} < 1.1; 377 last if $self->{h}{connection} =~ /close/i;
378
379 $httpevent->broadcast;
326 380
327 $fh->timeout($::PER_TIMEOUT); 381 $fh->timeout($::PER_TIMEOUT);
328 } 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;
329} 391}
330 392
331# uri => path mapping 393# uri => path mapping
332sub map_uri { 394sub map_uri {
333 my $self = shift; 395 my $self = shift;
… …
380 442
381sub respond { 443sub respond {
382 my $self = shift; 444 my $self = shift;
383 my $path = $self->{path}; 445 my $path = $self->{path};
384 446
385 stat $path 447 if ($self->{name} =~ s%^/internal/([^/]+)%%) {
386 or $self->err(404, "not found"); 448 if ($::internal{$1}) {
387 449 $::internal{$1}->($self);
388 $self->{stat} = [stat _];
389
390 # idiotic netscape sends idiotic headers AGAIN
391 my $ims = $self->{h}{"if-modified-since"} =~ /^([^;]+)/
392 ? str2time $1 : 0;
393
394 if (-d _ && -r _) {
395 # directory
396 if ($path !~ /\/$/) {
397 # create a redirect to get the trailing "/"
398 # we don't try to avoid the :80
399 $self->err(301, "moved permanently", { Location => "http://".$self->server_hostport."$self->{uri}/" });
400 } else { 450 } else {
401 $ims < $self->{stat}[9] 451 $self->err(404, "not found");
452 }
453 } else {
454
455 stat $path
402 or $self->err(304, "not modified"); 456 or $self->err(404, "not found");
403 457
404 if (-r "$path/index.html") { 458 $self->{stat} = [stat _];
405 $self->{path} .= "/index.html"; 459
406 $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}/" });
407 } 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 {
408 $self->handle_dir; 479 $self->handle_dir;
409 } 480 }
410 } 481 }
411 } elsif (-f _ && -r _) { 482 } elsif (-f _ && -r _) {
412 -x _ and $self->err(403, "forbidden"); 483 -x _ and $self->err(403, "forbidden");
413 $self->handle_file; 484
485 if (keys %{$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);
414 } else { 497 } else {
415 $self->err(404, "not found"); 498 $self->err(404, "not found");
499 }
416 } 500 }
417} 501}
418 502
419sub handle_dir { 503sub handle_dir {
420 my $self = shift; 504 my $self = shift;
… …
422 506
423 $self->response(200, "ok", 507 $self->response(200, "ok",
424 { 508 {
425 "Content-Type" => "text/html", 509 "Content-Type" => "text/html",
426 "Content-Length" => length $idx, 510 "Content-Length" => length $idx,
511 "Last-Modified" => time2str ($self->{stat}[9]),
427 }, 512 },
428 $idx); 513 $idx);
429} 514}
430 515
431sub handle_file { 516sub handle_file {
432 my $self = shift; 517 my ($self, $queue, $tbf) = @_;
433 my $length = $self->{stat}[7]; 518 my $length = $self->{stat}[7];
434 my $queue = $::transfers[$length >= $::TRANSFER_SMALL];
435 my $hdr = { 519 my $hdr = {
436 "Last-Modified" => time2str ((stat _)[9]), 520 "Last-Modified" => time2str ((stat _)[9]),
437 }; 521 };
438 522
439 my @code = (200, "ok"); 523 my @code = (200, "ok");
… …
456 $self->err(416, "not satisfiable", $hdr, ""); 540 $self->err(416, "not satisfiable", $hdr, "");
457 541
458satisfiable: 542satisfiable:
459 # check for segmented downloads 543 # check for segmented downloads
460 if ($l && $::NO_SEGMENTED) { 544 if ($l && $::NO_SEGMENTED) {
461 my $delay = $::PER_TIMEOUT + 15; 545 my $timeout = $::NOW + 15;
462 while (%{$uri{$self->{remote_id}}{$self->{uri}}} > 1) { 546 while (keys %{$uri{$self->{remote_id}}{$self->{uri}}} > 1) {
463 if ($delay <= 0) { 547 if ($timeout <= $::NOW) {
548 $self->block($::BLOCKTIME, "segmented downloads are forbidden");
464 $self->err_segmented_download; 549 #$self->err_segmented_download;
465 } else { 550 } else {
466 Coro::Event::do_timer(after => 4); $delay -= 4; 551 $httpevent->wait;
467 } 552 }
468 } 553 }
469 } 554 }
470 555
471 $hdr->{"Content-Range"} = "bytes $l-$h/$length"; 556 $hdr->{"Content-Range"} = "bytes $l-$h/$length";
… …
484 $self->response(@code, $hdr, ""); 569 $self->response(@code, $hdr, "");
485 570
486 if ($self->{method} eq "GET") { 571 if ($self->{method} eq "GET") {
487 $self->{time} = $::NOW; 572 $self->{time} = $::NOW;
488 573
489 my $fudge = $queue->[0]->waiters; 574 my $current = $Coro::current;
490 $fudge = $fudge ? ($fudge+1)/$fudge : 1;
491
492 $queue->[1] *= $fudge;
493 my $transfer = $queue->[0]->guard;
494
495 if ($fudge != 1) {
496 $queue->[1] /= $fudge;
497 $queue->[1] = $queue->[1] * $::wait_factor
498 + ($::NOW - $self->{time}) * (1 - $::wait_factor);
499 }
500 $self->{time} = $::NOW;
501
502 $self->{fh}->writable or return;
503 575
504 my ($fh, $buf, $r); 576 my ($fh, $buf, $r);
505 my $current = $Coro::current; 577
506 open $fh, "<", $self->{path} 578 open $fh, "<", $self->{path}
507 or die "$self->{path}: late open failure ($!)"; 579 or die "$self->{path}: late open failure ($!)";
508 580
509 $h -= $l - 1; 581 $h -= $l - 1;
510 582
511 if (0) { 583 if (0) { # !AIO
512 if ($l) { 584 if ($l) {
513 sysseek $fh, $l, 0; 585 sysseek $fh, $l, 0;
514 } 586 }
515 } 587 }
588
589 my $transfer = $queue->start_transfer($h);
590 my $locked;
591 my $bufsize = $::WAIT_BUFSIZE; # initial buffer size
516 592
517 while ($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
518 if (0) { 606 if (0) { # !AIO
519 sysread $fh, $buf, $h > $::BUFSIZE ? $::BUFSIZE : $h 607 sysread $fh, $buf, $h > $bufsize ? $bufsize : $h
520 or last; 608 or last;
521 } else { 609 } else {
522 aio_read($fh, $l, ($h > $::BUFSIZE ? $::BUFSIZE : $h), 610 aio_read($fh, $l, ($h > $bufsize ? $bufsize : $h),
523 $buf, 0, sub { 611 $buf, 0, sub {
524 $r = $_[0]; 612 $r = $_[0];
525 Coro::ready($current); 613 Coro::ready($current);
526 }); 614 });
527 &Coro::schedule; 615 &Coro::schedule;
528 last unless $r; 616 last unless $r;
529 } 617 }
618
619 $tbf->request(length $buf);
530 my $w = syswrite $self->{fh}, $buf 620 my $w = syswrite $self->{fh}, $buf
531 or last; 621 or last;
532 $::written += $w; 622 $::written += $w;
533 $self->{written} += $w; 623 $self->{written} += $w;
534 $l += $r; 624 $l += $r;

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