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/cvs/cvsroot/Coro/myhttpd/httpd.pl
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Comparing cvsroot/Coro/myhttpd/httpd.pl (file contents):
Revision 1.37 by root, Sun Sep 2 01:03:53 2001 UTC vs.
Revision 1.52 by root, Fri Nov 30 05:11:23 2001 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
… …
28 my $format = shift; 30 my $format = shift;
29 printf "---: $format\n", @_; 31 printf "---: $format\n", @_;
30} 32}
31 33
32our $connections = new Coro::Semaphore $MAX_CONNECTS || 250; 34our $connections = new Coro::Semaphore $MAX_CONNECTS || 250;
35our $httpevent = new Coro::Signal;
33 36
34our $wait_factor = 0.95; 37our $wait_factor = 0.95;
35 38
36our @transfers = ( 39our $queue_small = new transferqueue $MAX_TRANSFERS_SMALL;
37 [(new Coro::Semaphore $MAX_TRANSFERS_SMALL || 50), 1], 40our $queue_large = new transferqueue $MAX_TRANSFERS_LARGE;
38 [(new Coro::Semaphore $MAX_TRANSFERS_LARGE || 50), 1], 41our $queue_index = new transferqueue 5;
39);
40 42
41my @newcons; 43my @newcons;
42my @pool; 44my @pool;
43 45
44# one "execution thread" 46# one "execution thread"
45sub handler { 47sub handler {
46 while () { 48 while () {
47 my $new = pop @newcons;
48 if ($new) { 49 if (@newcons) {
49 eval { 50 eval {
50 conn->new(@$new)->handle; 51 conn->new(@{pop @newcons})->handle;
51 }; 52 };
52 slog 1, "$@" if $@ && !ref $@; 53 slog 1, "$@" if $@ && !ref $@;
53 $connections->up; 54 $connections->up;
54 } else { 55 } else {
55 last if @pool >= $MAX_POOL; 56 last if @pool >= $MAX_POOL;
… …
57 schedule; 58 schedule;
58 } 59 }
59 } 60 }
60} 61}
61 62
63sub listen_on {
64 my $listen = $_[0];
65
66 push @listen_sockets, $listen;
67
68 # the "main thread"
69 async {
70 slog 1, "accepting connections";
71 while () {
72 $connections->down;
73 push @newcons, [$listen->accept];
74 #slog 3, "accepted @$connections ".scalar(@pool);
75 if (@pool) {
76 (pop @pool)->ready;
77 } else {
78 async \&handler;
79 }
80
81 }
82 };
83}
84
62my $http_port = new Coro::Socket 85my $http_port = new Coro::Socket
63 LocalAddr => $SERVER_HOST, 86 LocalAddr => $SERVER_HOST,
64 LocalPort => $SERVER_PORT, 87 LocalPort => $SERVER_PORT,
65 ReuseAddr => 1, 88 ReuseAddr => 1,
66 Listen => 50, 89 Listen => 50,
67 or die "unable to start server"; 90 or die "unable to start server";
68 91
69push @listen_sockets, $http_port; 92listen_on $http_port;
93
94if ($SERVER_PORT2) {
95 my $http_port = new Coro::Socket
96 LocalAddr => $SERVER_HOST,
97 LocalPort => $SERVER_PORT2,
98 ReuseAddr => 1,
99 Listen => 50,
100 or die "unable to start server";
101
102 listen_on $http_port;
103}
70 104
71our $NOW; 105our $NOW;
72our $HTTP_NOW; 106our $HTTP_NOW;
73 107
74Event->timer(interval => 1, hard => 1, cb => sub { 108Event->timer(interval => 1, hard => 1, cb => sub {
75 $NOW = time; 109 $NOW = time;
76 $HTTP_NOW = time2str $NOW; 110 $HTTP_NOW = time2str $NOW;
77})->now; 111})->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};
94 112
95package conn; 113package conn;
96 114
97use Socket; 115use Socket;
98use HTTP::Date; 116use HTTP::Date;
… …
125 143
126read_mimetypes; 144read_mimetypes;
127 145
128sub new { 146sub new {
129 my $class = shift; 147 my $class = shift;
148 my $fh = shift;
130 my $peername = shift; 149 my $peername = shift;
131 my $fh = shift;
132 my $self = bless { fh => $fh }, $class; 150 my $self = bless { fh => $fh }, $class;
133 my (undef, $iaddr) = unpack_sockaddr_in $peername 151 my (undef, $iaddr) = unpack_sockaddr_in $peername
134 or $self->err(500, "unable to decode peername"); 152 or $self->err(500, "unable to decode peername");
135 153
154 $self->{remote_addr} =
136 $self->{remote_addr} = inet_ntoa $iaddr; 155 $self->{remote_id} = inet_ntoa $iaddr;
137 $self->{time} = $::NOW; 156 $self->{time} = $::NOW;
138 157
158 weaken ($Coro::current->{conn} = $self);
159
139 $::conns++; 160 $::conns++;
140 161
141 $self; 162 $self;
142} 163}
143 164
144sub DESTROY { 165sub DESTROY {
145 my $self = shift; 166 my $self = shift;
146
147 $::conns--; 167 $::conns--;
148
149 $self->eoconn; 168 $self->eoconn;
150} 169}
151 170
152# end of connection 171# end of connection
153sub eoconn { 172sub eoconn {
154 my $self = shift; 173 my $self = shift;
155 174
156 # clean up hints 175 # clean up hints
157 delete $conn{$self->{remote_id}}{$self*1}; 176 delete $conn{$self->{remote_id}}{$self*1};
158 delete $uri{$self->{remote_id}}{$self->{uri}}{$self*1}; 177 delete $uri{$self->{remote_id}}{$self->{uri}}{$self*1};
178
179 $httpevent->broadcast;
159} 180}
160 181
161sub slog { 182sub slog {
162 my $self = shift; 183 my $self = shift;
163 main::slog($_[0], ($self->{remote_id} || $self->{remote_addr}) ."> $_[1]"); 184 main::slog($_[0], "$self->{remote_id}> $_[1]");
164} 185}
165 186
166sub response { 187sub response {
167 my ($self, $code, $msg, $hdr, $content) = @_; 188 my ($self, $code, $msg, $hdr, $content) = @_;
168 my $res = "HTTP/1.1 $code $msg\015\012"; 189 my $res = "HTTP/1.1 $code $msg\015\012";
169 190
170 $self->{h}{connection} ||= $hdr->{Connection}; 191 if (exists $hdr->{Connection}) {
192 if ($hdr->{Connection} =~ /close/) {
193 $self->{h}{connection} = "close"
194 }
195 } else {
196 if ($self->{version} < 1.1) {
197 if ($self->{h}{connection} =~ /keep-alive/i) {
198 $hdr->{Connection} = "Keep-Alive";
199 } else {
200 $self->{h}{connection} = "close"
201 }
202 }
203 }
171 204
172 $res .= "Date: $HTTP_NOW\015\012"; 205 $res .= "Date: $HTTP_NOW\015\012";
173 206
174 while (my ($h, $v) = each %$hdr) { 207 while (my ($h, $v) = each %$hdr) {
175 $res .= "$h: $v\015\012" 208 $res .= "$h: $v\015\012"
176 } 209 }
177 $res .= "\015\012"; 210 $res .= "\015\012";
178 211
179 $res .= $content if defined $content and $self->{method} ne "HEAD"; 212 $res .= $content if defined $content and $self->{method} ne "HEAD";
180 213
181 my $log = "$self->{remote_addr} \"$self->{uri}\" $code ".$hdr->{"Content-Length"}." \"$self->{h}{referer}\"\n"; 214 my $log = (POSIX::strftime "%Y-%m-%d %H:%M:%S", gmtime $NOW).
215 " $self->{remote_id} \"$self->{uri}\" $code ".$hdr->{"Content-Length"}.
216 " \"$self->{h}{referer}\"\n";
182 217
183 print $accesslog $log if $accesslog; 218 print $accesslog $log if $accesslog;
184 print STDERR $log; 219 print STDERR $log;
185 220
186 $self->{written} += 221 $self->{written} +=
… …
278 313
279 delete $blocked{$id}; 314 delete $blocked{$id};
280 } 315 }
281 316
282 if (%{$conn{$id}} >= $::MAX_CONN_IP) { 317 if (%{$conn{$id}} >= $::MAX_CONN_IP) {
283 my $delay = $::PER_TIMEOUT + 15; 318 my $delay = $::PER_TIMEOUT + $::NOW + 15;
284 while (%{$conn{$id}} >= $::MAX_CONN_IP) { 319 while (%{$conn{$id}} >= $::MAX_CONN_IP) {
285 if ($delay <= 0) { 320 if ($delay < $::NOW) {
286 $self->slog(2, "blocked ip $id"); 321 $self->slog(2, "blocked ip $id");
287 $self->err_blocked; 322 $self->err_blocked;
288 } else { 323 } else {
289 Coro::Event::do_timer(after => 4); $delay -= 4; 324 $httpevent->wait;
290 } 325 }
291 } 326 }
292 } 327 }
293 328
294 # find out server name and port 329 # find out server name and port
… …
300 335
301 if (defined $host) { 336 if (defined $host) {
302 $self->{server_port} = $host =~ s/:([0-9]+)$// ? $1 : 80; 337 $self->{server_port} = $host =~ s/:([0-9]+)$// ? $1 : 80;
303 } else { 338 } else {
304 ($self->{server_port}, $host) 339 ($self->{server_port}, $host)
305 = unpack_sockaddr_in $self->{fh}->getsockname 340 = unpack_sockaddr_in $self->{fh}->sockname
306 or $self->err(500, "unable to get socket name"); 341 or $self->err(500, "unable to get socket name");
307 $host = inet_ntoa $host; 342 $host = inet_ntoa $host;
308 } 343 }
309 344
310 $self->{server_name} = $host; 345 $self->{server_name} = $host;
… …
320 355
321 $self->eoconn; 356 $self->eoconn;
322 357
323 die if $@ && !ref $@; 358 die if $@ && !ref $@;
324 359
325 last if $self->{h}{connection} =~ /close/ || $self->{version} < 1.1; 360 last if $self->{h}{connection} =~ /close/;
361
362 $httpevent->broadcast;
326 363
327 $fh->timeout($::PER_TIMEOUT); 364 $fh->timeout($::PER_TIMEOUT);
328 } 365 }
329} 366}
330 367
… …
380 417
381sub respond { 418sub respond {
382 my $self = shift; 419 my $self = shift;
383 my $path = $self->{path}; 420 my $path = $self->{path};
384 421
385 stat $path 422 if ($self->{name} =~ s%^/internal/([^/]+)%%) {
386 or $self->err(404, "not found"); 423 if ($::internal{$1}) {
387 424 $::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 { 425 } else {
401 $ims < $self->{stat}[9] 426 $self->err(404, "not found");
427 }
428 } else {
429
430 stat $path
402 or $self->err(304, "not modified"); 431 or $self->err(404, "not found");
403 432
404 if (-r "$path/index.html") { 433 $self->{stat} = [stat _];
405 $self->{path} .= "/index.html"; 434
406 $self->handle_file; 435 # idiotic netscape sends idiotic headers AGAIN
436 my $ims = $self->{h}{"if-modified-since"} =~ /^([^;]+)/
437 ? str2time $1 : 0;
438
439 if (-d _ && -r _) {
440 # directory
441 if ($path !~ /\/$/) {
442 # create a redirect to get the trailing "/"
443 # we don't try to avoid the :80
444 $self->err(301, "moved permanently", { Location => "http://".$self->server_hostport."$self->{uri}/" });
407 } else { 445 } else {
446 $ims < $self->{stat}[9]
447 or $self->err(304, "not modified");
448
449 if (-r "$path/index.html") {
450 # replace directory "size" by index.html filesize
451 $self->{stat}[7] = (stat ($self->{path} .= "/index.html"))[7];
452 $self->handle_file($queue_index);
453 } else {
408 $self->handle_dir; 454 $self->handle_dir;
409 } 455 }
410 } 456 }
411 } elsif (-f _ && -r _) { 457 } elsif (-f _ && -r _) {
412 -x _ and $self->err(403, "forbidden"); 458 -x _ and $self->err(403, "forbidden");
413 $self->handle_file; 459 $self->handle_file(-s _ >= $::TRANSFER_SMALL ? $queue_large : $queue_small);
414 } else { 460 } else {
415 $self->err(404, "not found"); 461 $self->err(404, "not found");
462 }
416 } 463 }
417} 464}
418 465
419sub handle_dir { 466sub handle_dir {
420 my $self = shift; 467 my $self = shift;
… …
422 469
423 $self->response(200, "ok", 470 $self->response(200, "ok",
424 { 471 {
425 "Content-Type" => "text/html", 472 "Content-Type" => "text/html",
426 "Content-Length" => length $idx, 473 "Content-Length" => length $idx,
474 #d# directories change all the time, so X-
475 "X-Last-Modified" => time2str ((stat _)[9]),
427 }, 476 },
428 $idx); 477 $idx);
429} 478}
430 479
431sub handle_file { 480sub handle_file {
432 my $self = shift; 481 my ($self, $queue) = @_;
433 my $length = $self->{stat}[7]; 482 my $length = $self->{stat}[7];
434 my $queue = $::transfers[$length >= $::TRANSFER_SMALL];
435 my $hdr = { 483 my $hdr = {
436 "Last-Modified" => time2str ((stat _)[9]), 484 "Last-Modified" => time2str ((stat _)[9]),
437 }; 485 };
438 486
439 my @code = (200, "ok"); 487 my @code = (200, "ok");
… …
456 $self->err(416, "not satisfiable", $hdr, ""); 504 $self->err(416, "not satisfiable", $hdr, "");
457 505
458satisfiable: 506satisfiable:
459 # check for segmented downloads 507 # check for segmented downloads
460 if ($l && $::NO_SEGMENTED) { 508 if ($l && $::NO_SEGMENTED) {
461 my $delay = $::PER_TIMEOUT + 15; 509 my $delay = $::NOW + $::PER_TIMEOUT + 15;
462 while (%{$uri{$self->{remote_id}}{$self->{uri}}} > 1) { 510 while (%{$uri{$self->{remote_id}}{$self->{uri}}} > 1) {
463 if ($delay <= 0) { 511 if ($delay <= $::NOW) {
464 $self->err_segmented_download; 512 $self->err_segmented_download;
465 } else { 513 } else {
466 Coro::Event::do_timer(after => 4); $delay -= 4; 514 $httpevent->wait;
467 } 515 }
468 } 516 }
469 } 517 }
470 518
471 $hdr->{"Content-Range"} = "bytes $l-$h/$length"; 519 $hdr->{"Content-Range"} = "bytes $l-$h/$length";
… …
484 $self->response(@code, $hdr, ""); 532 $self->response(@code, $hdr, "");
485 533
486 if ($self->{method} eq "GET") { 534 if ($self->{method} eq "GET") {
487 $self->{time} = $::NOW; 535 $self->{time} = $::NOW;
488 536
489 my $fudge = $queue->[0]->waiters; 537 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 $self->{fh}->writable or return;
503 538
504 my ($fh, $buf, $r); 539 my ($fh, $buf, $r);
505 my $current = $Coro::current; 540
506 open $fh, "<", $self->{path} 541 open $fh, "<", $self->{path}
507 or die "$self->{path}: late open failure ($!)"; 542 or die "$self->{path}: late open failure ($!)";
508 543
509 $h -= $l - 1; 544 $h -= $l - 1;
510 545
511 if (0) { 546 if (0) { # !AIO
512 if ($l) { 547 if ($l) {
513 sysseek $fh, $l, 0; 548 sysseek $fh, $l, 0;
514 } 549 }
515 } 550 }
551
552 my $transfer = $queue->start_transfer;
553 my $locked;
554 my $bufsize = $::WAIT_BUFSIZE; # initial buffer size
516 555
517 while ($h > 0) { 556 while ($h > 0) {
557 unless ($locked) {
558 if ($locked ||= $transfer->try($::WAIT_INTERVAL)) {
559 $bufsize = $::BUFSIZE;
560 $self->{time} = $::NOW;
561 }
562 }
563
518 if (0) { 564 if (0) { # !AIO
519 sysread $fh, $buf, $h > $::BUFSIZE ? $::BUFSIZE : $h 565 sysread $fh, $buf, $h > $bufsize ? $bufsize : $h
520 or last; 566 or last;
521 } else { 567 } else {
522 aio_read($fh, $l, ($h > $::BUFSIZE ? $::BUFSIZE : $h), 568 aio_read($fh, $l, ($h > $bufsize ? $bufsize : $h),
523 $buf, 0, sub { 569 $buf, 0, sub {
524 $r = $_[0]; 570 $r = $_[0];
525 Coro::ready($current); 571 Coro::ready($current);
526 }); 572 });
527 &Coro::schedule; 573 &Coro::schedule;

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