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Comparing cvsroot/Coro/myhttpd/httpd.pl (file contents):
Revision 1.35 by root, Thu Aug 30 12:35:28 2001 UTC vs.
Revision 1.62 by root, Sun Jan 6 05:29:39 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 ();
7 9
8no utf8; 10no utf8;
9use bytes; 11use bytes;
10 12
11# at least on my machine, this thingy serves files 13# at least on my machine, this thingy serves files
… …
13# and quite a bit slower than thttpd :( 15# and quite a bit slower than thttpd :(
14 16
15$SIG{PIPE} = 'IGNORE'; 17$SIG{PIPE} = 'IGNORE';
16 18
17our $accesslog; 19our $accesslog;
20our $errorlog;
21
22our $NOW;
23our $HTTP_NOW;
24
25Event->timer(interval => 1, hard => 1, cb => sub {
26 $NOW = time;
27 $HTTP_NOW = time2str $NOW;
28})->now;
29
30if ($ERROR_LOG) {
31 use IO::Handle;
32 open $errorlog, ">>$ERROR_LOG"
33 or die "$ERROR_LOG: $!";
34 $errorlog->autoflush(1);
35}
18 36
19if ($ACCESS_LOG) { 37if ($ACCESS_LOG) {
20 use IO::Handle; 38 use IO::Handle;
21 open $accesslog, ">>$ACCESS_LOG" 39 open $accesslog, ">>$ACCESS_LOG"
22 or die "$ACCESS_LOG: $!"; 40 or die "$ACCESS_LOG: $!";
… …
24} 42}
25 43
26sub slog { 44sub slog {
27 my $level = shift; 45 my $level = shift;
28 my $format = shift; 46 my $format = shift;
47 my $NOW = (POSIX::strftime "%Y-%m-%d %H:%M:%S", gmtime $::NOW);
29 printf "---: $format\n", @_; 48 printf "$NOW: $format\n", @_;
49 printf $errorlog "$NOW: $format\n", @_ if $errorlog;
30} 50}
31 51
32our $connections = new Coro::Semaphore $MAX_CONNECTS || 250; 52our $connections = new Coro::Semaphore $MAX_CONNECTS || 250;
53our $httpevent = new Coro::Signal;
33 54
34our $wait_factor = 0.95; 55our $queue_file = new transferqueue slots => $MAX_TRANSFERS, maxsize => 250_000_000;
56our $queue_index = new transferqueue slots => 10;
35 57
36our @transfers = ( 58our $requests;
37 [(new Coro::Semaphore $MAX_TRANSFERS_SMALL || 50), 1],
38 [(new Coro::Semaphore $MAX_TRANSFERS_LARGE || 50), 1],
39);
40 59
41my @newcons; 60my @newcons;
42my @pool; 61my @pool;
43 62
44# one "execution thread" 63# one "execution thread"
45sub handler { 64sub handler {
46 while () { 65 while () {
47 my $new = pop @newcons;
48 if ($new) { 66 if (@newcons) {
49 eval { 67 eval {
50 conn->new(@$new)->handle; 68 conn->new(@{pop @newcons})->handle;
51 }; 69 };
52 slog 1, "$@" if $@ && !ref $@; 70 slog 1, "$@" if $@ && !ref $@;
71
72 $httpevent->broadcast; # only for testing, but doesn't matter much
73
53 $connections->up; 74 $connections->up;
54 } else { 75 } else {
55 last if @pool >= $MAX_POOL; 76 last if @pool >= $MAX_POOL;
56 push @pool, $Coro::current; 77 push @pool, $Coro::current;
57 schedule; 78 schedule;
58 } 79 }
59 } 80 }
81}
82
83sub listen_on {
84 my $listen = $_[0];
85
86 push @listen_sockets, $listen;
87
88 # the "main thread"
89 async {
90 slog 1, "accepting connections";
91 while () {
92 $connections->down;
93 push @newcons, [$listen->accept];
94 #slog 3, "accepted @$connections ".scalar(@pool);
95 if (@pool) {
96 (pop @pool)->ready;
97 } else {
98 async \&handler;
99 }
100
101 }
102 };
60} 103}
61 104
62my $http_port = new Coro::Socket 105my $http_port = new Coro::Socket
63 LocalAddr => $SERVER_HOST, 106 LocalAddr => $SERVER_HOST,
64 LocalPort => $SERVER_PORT, 107 LocalPort => $SERVER_PORT,
65 ReuseAddr => 1, 108 ReuseAddr => 1,
66 Listen => 50, 109 Listen => 50,
67 or die "unable to start server"; 110 or die "unable to start server";
68 111
69push @listen_sockets, $http_port; 112listen_on $http_port;
70 113
71our $NOW; 114if ($SERVER_PORT2) {
72our $HTTP_NOW; 115 my $http_port = new Coro::Socket
116 LocalAddr => $SERVER_HOST,
117 LocalPort => $SERVER_PORT2,
118 ReuseAddr => 1,
119 Listen => 50,
120 or die "unable to start server";
73 121
74Event->timer(interval => 1, hard => 1, cb => sub { 122 listen_on $http_port;
75 $NOW = time; 123}
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};
94 124
95package conn; 125package conn;
96 126
97use Socket; 127use Socket;
98use HTTP::Date; 128use HTTP::Date;
99use Convert::Scalar 'weaken'; 129use Convert::Scalar 'weaken';
100use Linux::AIO; 130use Linux::AIO;
101 131
102Linux::AIO::min_parallel $::AIO_PARALLEL; 132Linux::AIO::min_parallel $::AIO_PARALLEL;
103
104my $aio_requests = new Coro::Semaphore $::AIO_PARALLEL * 4;
105 133
106Event->io(fd => Linux::AIO::poll_fileno, 134Event->io(fd => Linux::AIO::poll_fileno,
107 poll => 'r', async => 1, 135 poll => 'r', async => 1,
108 cb => \&Linux::AIO::poll_cb); 136 cb => \&Linux::AIO::poll_cb);
109 137
… …
127 155
128read_mimetypes; 156read_mimetypes;
129 157
130sub new { 158sub new {
131 my $class = shift; 159 my $class = shift;
160 my $fh = shift;
132 my $peername = shift; 161 my $peername = shift;
133 my $fh = shift;
134 my $self = bless { fh => $fh }, $class; 162 my $self = bless { fh => $fh }, $class;
135 my (undef, $iaddr) = unpack_sockaddr_in $peername 163 my (undef, $iaddr) = unpack_sockaddr_in $peername
136 or $self->err(500, "unable to decode peername"); 164 or $self->err(500, "unable to decode peername");
137 165
166 $self->{remote_addr} =
138 $self->{remote_addr} = inet_ntoa $iaddr; 167 $self->{remote_id} = inet_ntoa $iaddr;
168
139 $self->{time} = $::NOW; 169 $self->{time} = $::NOW;
140 170
141 # enter ourselves into various lists 171 weaken ($Coro::current->{conn} = $self);
142 weaken ($conn{$self->{remote_addr}}{$self*1} = $self);
143 172
144 $::conns++; 173 $::conns++;
174 $::maxconns = $::conns if $::conns > $::maxconns;
145 175
146 $self; 176 $self;
147} 177}
148 178
149sub DESTROY { 179sub DESTROY {
150 my $self = shift; 180 #my $self = shift;
151
152 $::conns--; 181 $::conns--;
153
154 $self->eoconn;
155 delete $conn{$self->{remote_addr}}{$self*1};
156}
157
158# end of connection
159sub eoconn {
160 my $self = shift;
161 delete $uri{$self->{remote_addr}}{$self->{uri}}{$self*1};
162} 182}
163 183
164sub slog { 184sub slog {
165 my $self = shift; 185 my $self = shift;
166 main::slog($_[0], ($self->{remote_id} || $self->{remote_addr}) ."> $_[1]"); 186 main::slog($_[0], "$self->{remote_id}> $_[1]");
167} 187}
168 188
169sub response { 189sub response {
170 my ($self, $code, $msg, $hdr, $content) = @_; 190 my ($self, $code, $msg, $hdr, $content) = @_;
171 my $res = "HTTP/1.1 $code $msg\015\012"; 191 my $res = "HTTP/1.1 $code $msg\015\012";
172 192
173 $self->{h}{connection} ||= $hdr->{Connection}; 193 if (exists $hdr->{Connection}) {
194 if ($hdr->{Connection} =~ /close/) {
195 $self->{h}{connection} = "close"
196 }
197 } else {
198 if ($self->{version} < 1.1) {
199 if ($self->{h}{connection} =~ /keep-alive/i) {
200 $hdr->{Connection} = "Keep-Alive";
201 } else {
202 $self->{h}{connection} = "close"
203 }
204 }
205 }
174 206
175 $res .= "Date: $HTTP_NOW\015\012"; 207 $res .= "Date: $HTTP_NOW\015\012";
176 208
177 while (my ($h, $v) = each %$hdr) { 209 while (my ($h, $v) = each %$hdr) {
178 $res .= "$h: $v\015\012" 210 $res .= "$h: $v\015\012"
179 } 211 }
180 $res .= "\015\012"; 212 $res .= "\015\012";
181 213
182 $res .= $content if defined $content and $self->{method} ne "HEAD"; 214 $res .= $content if defined $content and $self->{method} ne "HEAD";
183 215
184 my $log = "$self->{remote_addr} \"$self->{uri}\" $code ".$hdr->{"Content-Length"}." \"$self->{h}{referer}\"\n"; 216 my $log = (POSIX::strftime "%Y-%m-%d %H:%M:%S", gmtime $NOW).
217 " $self->{remote_id} \"$self->{uri}\" $code ".$hdr->{"Content-Length"}.
218 " \"$self->{h}{referer}\"\n";
185 219
186 print $accesslog $log if $accesslog; 220 print $accesslog $log if $accesslog;
187 print STDERR $log; 221 print STDERR $log;
188 222
189 $self->{written} += 223 $self->{written} +=
… …
228 } 262 }
229 263
230 $self->{h} = {}; 264 $self->{h} = {};
231 265
232 $fh->timeout($::RES_TIMEOUT); 266 $fh->timeout($::RES_TIMEOUT);
233 my $ip = $self->{remote_addr};
234
235 if ($blocked{$ip}) {
236 $self->err_blocked($blocked{$ip})
237 if $blocked{$ip} > $::NOW;
238
239 delete $blocked{$ip};
240 }
241
242 if (%{$conn{$ip}} > $::MAX_CONN_IP) {
243 my $delay = 120;
244 while (%{$conn{$ip}} > $::MAX_CONN_IP) {
245 if ($delay <= 0) {
246 $self->slog(2, "blocked ip $ip");
247 $self->err_blocked;
248 } else {
249 Coro::Event::do_timer(after => 3);
250 $delay -= 3;
251 }
252 }
253 }
254 267
255 $req =~ /^(?:\015\012)? 268 $req =~ /^(?:\015\012)?
256 (GET|HEAD) \040+ 269 (GET|HEAD) \040+
257 ([^\040]+) \040+ 270 ([^\040]+) \040+
258 HTTP\/([0-9]+\.[0-9]+) 271 HTTP\/([0-9]+\.[0-9]+)
… …
283 296
284 $self->{h}{$h} = substr $v, 1 297 $self->{h}{$h} = substr $v, 1
285 while ($h, $v) = each %hdr; 298 while ($h, $v) = each %hdr;
286 } 299 }
287 300
301 $requests++;
302
303 # remote id should be unique per user
304 my $id = $self->{remote_addr};
305
306 if (exists $self->{h}{"client-ip"}) {
307 $id .= "[".$self->{h}{"client-ip"}."]";
308 } elsif (exists $self->{h}{"x-forwarded-for"}) {
309 $id .= "[".$self->{h}{"x-forwarded-for"}."]";
310 }
311
312 $self->{remote_id} = $id;
313
314 weaken (local $conn{$id}{$self*1} = $self);
315
316 if ($blocked{$id}) {
317 $self->err_blocked
318 if $blocked{$id}[0] > $::NOW;
319
320 delete $blocked{$id};
321 }
322
288 # find out server name and port 323 # find out server name and port
289 if ($self->{uri} =~ s/^http:\/\/([^\/?#]*)//i) { 324 if ($self->{uri} =~ s/^http:\/\/([^\/?#]*)//i) {
290 $host = $1; 325 $host = $1;
291 } else { 326 } else {
292 $host = $self->{h}{host}; 327 $host = $self->{h}{host};
… …
294 329
295 if (defined $host) { 330 if (defined $host) {
296 $self->{server_port} = $host =~ s/:([0-9]+)$// ? $1 : 80; 331 $self->{server_port} = $host =~ s/:([0-9]+)$// ? $1 : 80;
297 } else { 332 } else {
298 ($self->{server_port}, $host) 333 ($self->{server_port}, $host)
299 = unpack_sockaddr_in $self->{fh}->getsockname 334 = unpack_sockaddr_in $self->{fh}->sockname
300 or $self->err(500, "unable to get socket name"); 335 or $self->err(500, "unable to get socket name");
301 $host = inet_ntoa $host; 336 $host = inet_ntoa $host;
302 } 337 }
303 338
304 $self->{server_name} = $host; 339 $self->{server_name} = $host;
305 340
306 # remote id should be unique per user
307 $self->{remote_id} = $self->{remote_addr};
308
309 if (exists $self->{h}{"client-ip"}) {
310 $self->{remote_id} .= "[".$self->{h}{"client-ip"}."]";
311 } elsif (exists $self->{h}{"x-forwarded-for"}) {
312 $self->{remote_id} .= "[".$self->{h}{"x-forwarded-for"}."]";
313 }
314
315 weaken ($uri{$self->{remote_addr}}{$self->{uri}}{$self*1} = $self); 341 weaken (local $uri{$id}{$self->{uri}}{$self*1} = $self);
316 342
317 eval { 343 eval {
318 $self->map_uri; 344 $self->map_uri;
319 $self->respond; 345 $self->respond;
320 }; 346 };
321 347
322 $self->eoconn;
323
324 die if $@ && !ref $@; 348 die if $@ && !ref $@;
325 349
326 last if $self->{h}{connection} =~ /close/ || $self->{version} < 1.1; 350 last if $self->{h}{connection} =~ /close/i;
351
352 $httpevent->broadcast;
327 353
328 $fh->timeout($::PER_TIMEOUT); 354 $fh->timeout($::PER_TIMEOUT);
329 } 355 }
356}
357
358sub block {
359 my $self = shift;
360
361 $blocked{$self->{remote_id}} = [$::NOW + $_[0], $_[1]];
362 $self->slog(2, "blocked ip $self->{remote_id}");
363 $self->err_blocked;
330} 364}
331 365
332# uri => path mapping 366# uri => path mapping
333sub map_uri { 367sub map_uri {
334 my $self = shift; 368 my $self = shift;
… …
381 415
382sub respond { 416sub respond {
383 my $self = shift; 417 my $self = shift;
384 my $path = $self->{path}; 418 my $path = $self->{path};
385 419
386 stat $path 420 if ($self->{name} =~ s%^/internal/([^/]+)%%) {
387 or $self->err(404, "not found"); 421 if ($::internal{$1}) {
388 422 $::internal{$1}->($self);
389 $self->{stat} = [stat _];
390
391 # idiotic netscape sends idiotic headers AGAIN
392 my $ims = $self->{h}{"if-modified-since"} =~ /^([^;]+)/
393 ? str2time $1 : 0;
394
395 if (-d _ && -r _) {
396 # directory
397 if ($path !~ /\/$/) {
398 # create a redirect to get the trailing "/"
399 # we don't try to avoid the :80
400 $self->err(301, "moved permanently", { Location => "http://".$self->server_hostport."$self->{uri}/" });
401 } else { 423 } else {
402 $ims < $self->{stat}[9] 424 $self->err(404, "not found");
425 }
426 } else {
427
428 stat $path
403 or $self->err(304, "not modified"); 429 or $self->err(404, "not found");
404 430
405 if (-r "$path/index.html") { 431 $self->{stat} = [stat _];
406 $self->{path} .= "/index.html"; 432
407 $self->handle_file; 433 # idiotic netscape sends idiotic headers AGAIN
434 my $ims = $self->{h}{"if-modified-since"} =~ /^([^;]+)/
435 ? str2time $1 : 0;
436
437 if (-d _ && -r _) {
438 # directory
439 if ($path !~ /\/$/) {
440 # create a redirect to get the trailing "/"
441 # we don't try to avoid the :80
442 $self->err(301, "moved permanently", { Location => "http://".$self->server_hostport."$self->{uri}/" });
408 } else { 443 } else {
444 $ims < $self->{stat}[9]
445 or $self->err(304, "not modified");
446
447 if (-r "$path/index.html") {
448 # replace directory "size" by index.html filesize
449 $self->{stat} = [stat ($self->{path} .= "/index.html")];
450 $self->handle_file($queue_index);
451 } else {
409 $self->handle_dir; 452 $self->handle_dir;
410 } 453 }
411 } 454 }
412 } elsif (-f _ && -r _) { 455 } elsif (-f _ && -r _) {
413 -x _ and $self->err(403, "forbidden"); 456 -x _ and $self->err(403, "forbidden");
457
458 if (keys %{$conn{$self->{remote_id}}} > $::MAX_TRANSFERS_IP) {
459 my $timeout = $::NOW + 10;
460 while (keys %{$conn{$self->{remote_id}}} > $::MAX_TRANSFERS_IP) {
461 if ($timeout < $::NOW) {
462 $self->block($::BLOCKTIME, "too many connections");
463 } else {
464 $httpevent->wait;
465 }
466 }
467 }
468
414 $self->handle_file; 469 $self->handle_file($queue_file);
415 } else { 470 } else {
416 $self->err(404, "not found"); 471 $self->err(404, "not found");
472 }
417 } 473 }
418} 474}
419 475
420sub handle_dir { 476sub handle_dir {
421 my $self = shift; 477 my $self = shift;
… …
423 479
424 $self->response(200, "ok", 480 $self->response(200, "ok",
425 { 481 {
426 "Content-Type" => "text/html", 482 "Content-Type" => "text/html",
427 "Content-Length" => length $idx, 483 "Content-Length" => length $idx,
484 "Last-Modified" => time2str ($self->{stat}[9]),
428 }, 485 },
429 $idx); 486 $idx);
430} 487}
431 488
432sub handle_file { 489sub handle_file {
433 my $self = shift; 490 my ($self, $queue) = @_;
434 my $length = $self->{stat}[7]; 491 my $length = $self->{stat}[7];
435 my $queue = $::transfers[$length >= $::TRANSFER_SMALL];
436 my $hdr = { 492 my $hdr = {
437 "Last-Modified" => time2str ((stat _)[9]), 493 "Last-Modified" => time2str ((stat _)[9]),
438 }; 494 };
439 495
440 my @code = (200, "ok"); 496 my @code = (200, "ok");
… …
457 $self->err(416, "not satisfiable", $hdr, ""); 513 $self->err(416, "not satisfiable", $hdr, "");
458 514
459satisfiable: 515satisfiable:
460 # check for segmented downloads 516 # check for segmented downloads
461 if ($l && $::NO_SEGMENTED) { 517 if ($l && $::NO_SEGMENTED) {
462 my $delay = 180; 518 my $timeout = $::NOW + 15;
463 while (%{$uri{$self->{remote_addr}}{$self->{uri}}} > 1) { 519 while (keys %{$uri{$self->{remote_id}}{$self->{uri}}} > 1) {
464 if ($delay <= 0) { 520 if ($timeout <= $::NOW) {
521 $self->block($::BLOCKTIME, "segmented downloads are forbidden");
465 $self->err_segmented_download; 522 #$self->err_segmented_download;
466 } else { 523 } else {
467 Coro::Event::do_timer(after => 3); $delay -= 3; 524 $httpevent->wait;
468 } 525 }
469 } 526 }
470 } 527 }
471 528
472 $hdr->{"Content-Range"} = "bytes $l-$h/$length"; 529 $hdr->{"Content-Range"} = "bytes $l-$h/$length";
… …
485 $self->response(@code, $hdr, ""); 542 $self->response(@code, $hdr, "");
486 543
487 if ($self->{method} eq "GET") { 544 if ($self->{method} eq "GET") {
488 $self->{time} = $::NOW; 545 $self->{time} = $::NOW;
489 546
490 my $fudge = $queue->[0]->waiters; 547 my $current = $Coro::current;
491 $fudge = $fudge ? ($fudge+1)/$fudge : 1;
492
493 $queue->[1] *= $fudge;
494 my $transfer = $queue->[0]->guard;
495
496 if ($fudge != 1) {
497 $queue->[1] /= $fudge;
498 $queue->[1] = $queue->[1] * $::wait_factor
499 + ($::NOW - $self->{time}) * (1 - $::wait_factor);
500 }
501 $self->{time} = $::NOW;
502
503 $self->{fh}->writable or return;
504 548
505 my ($fh, $buf, $r); 549 my ($fh, $buf, $r);
506 my $current = $Coro::current; 550
507 open $fh, "<", $self->{path} 551 open $fh, "<", $self->{path}
508 or die "$self->{path}: late open failure ($!)"; 552 or die "$self->{path}: late open failure ($!)";
509 553
510 $h -= $l - 1; 554 $h -= $l - 1;
511 555
512 if (0) { 556 if (0) { # !AIO
513 if ($l) { 557 if ($l) {
514 sysseek $fh, $l, 0; 558 sysseek $fh, $l, 0;
515 } 559 }
516 } 560 }
561
562 my $transfer = $queue->start_transfer($h);
563 my $locked;
564 my $bufsize = $::WAIT_BUFSIZE; # initial buffer size
517 565
518 while ($h > 0) { 566 while ($h > 0) {
567 unless ($locked) {
568 if ($locked ||= $transfer->try($::WAIT_INTERVAL)) {
569 $bufsize = $::BUFSIZE;
570 $self->{time} = $::NOW;
571 }
572 }
573
574 if ($blocked{$self->{remote_id}}) {
575 $self->{h}{connection} = "close";
576 die bless {}, err::;
577 }
578
519 if (0) { 579 if (0) { # !AIO
520 sysread $fh, $buf, $h > $::BUFSIZE ? $::BUFSIZE : $h 580 sysread $fh, $buf, $h > $bufsize ? $bufsize : $h
521 or last; 581 or last;
522 } else { 582 } else {
523 undef $buf; 583 aio_read($fh, $l, ($h > $bufsize ? $bufsize : $h),
524 $aio_requests->down;
525 aio_read($fh, $l, ($h > $::BUFSIZE ? $::BUFSIZE : $h),
526 $buf, 0, sub { 584 $buf, 0, sub {
527 $r = $_[0]; 585 $r = $_[0];
528 $current->ready; 586 Coro::ready($current);
529 }); 587 });
530 &Coro::schedule; 588 &Coro::schedule;
531 $aio_requests->up;
532 last unless $r; 589 last unless $r;
533 } 590 }
534 my $w = $self->{fh}->syswrite($buf) 591 my $w = syswrite $self->{fh}, $buf
535 or last; 592 or last;
536 $::written += $w; 593 $::written += $w;
537 $self->{written} += $w; 594 $self->{written} += $w;
538 $l += $r; 595 $l += $r;
539 } 596 }

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