ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/cvsroot/Coro/myhttpd/httpd.pl
(Generate patch)

Comparing cvsroot/Coro/myhttpd/httpd.pl (file contents):
Revision 1.31 by root, Mon Aug 27 05:05:26 2001 UTC vs.
Revision 1.41 by root, Mon Sep 10 22:16:20 2001 UTC

1use Coro; 1use Coro;
2use Coro::Semaphore; 2use Coro::Semaphore;
3use Coro::Event; 3use Coro::Event;
4use Coro::Socket; 4use Coro::Socket;
5
6use HTTP::Date;
5 7
6no utf8; 8no utf8;
7use bytes; 9use bytes;
8 10
9# at least on my machine, this thingy serves files 11# at least on my machine, this thingy serves files
25 my $level = shift; 27 my $level = shift;
26 my $format = shift; 28 my $format = shift;
27 printf "---: $format\n", @_; 29 printf "---: $format\n", @_;
28} 30}
29 31
30my $connections = new Coro::Semaphore $MAX_CONNECTS; 32our $connections = new Coro::Semaphore $MAX_CONNECTS || 250;
33
34our $wait_factor = 0.95;
35
36our @transfers = (
37 [(new Coro::Semaphore $MAX_TRANSFERS_SMALL || 50), 1],
38 [(new Coro::Semaphore $MAX_TRANSFERS_LARGE || 50), 1],
39);
31 40
32my @newcons; 41my @newcons;
33my @pool; 42my @pool;
34 43
35# one "execution thread" 44# one "execution thread"
36sub handler { 45sub handler {
37 while () { 46 while () {
38 my $new = pop @newcons;
39 if ($new) { 47 if (@newcons) {
40 eval { 48 eval {
41 conn->new(@$new)->handle; 49 conn->new(@{pop @newcons})->handle;
42 }; 50 };
43 slog 1, "$@" if $@ && !ref $@; 51 slog 1, "$@" if $@ && !ref $@;
44 $connections->up; 52 $connections->up;
45 } else { 53 } else {
46 last if @pool >= $MAX_POOL; 54 last if @pool >= $MAX_POOL;
48 schedule; 56 schedule;
49 } 57 }
50 } 58 }
51} 59}
52 60
61sub listen_on {
62 my $listen = $_[0];
63
64 push @listen_sockets, $listen;
65
66 # the "main thread"
67 async {
68 slog 1, "accepting connections";
69 while () {
70 $connections->down;
71 push @newcons, [$listen->accept];
72 #slog 3, "accepted @$connections ".scalar(@pool);
73 if (@pool) {
74 (pop @pool)->ready;
75 } else {
76 async \&handler;
77 }
78
79 }
80 };
81}
82
53my $http_port = new Coro::Socket 83my $http_port = new Coro::Socket
54 LocalAddr => $SERVER_HOST, 84 LocalAddr => $SERVER_HOST,
55 LocalPort => $SERVER_PORT, 85 LocalPort => $SERVER_PORT,
56 ReuseAddr => 1, 86 ReuseAddr => 1,
57 Listen => 50, 87 Listen => 50,
58 or die "unable to start server"; 88 or die "unable to start server";
59 89
60push @listen_sockets, $http_port; 90listen_on $http_port;
61 91
62# the "main thread" 92if ($SERVER_PORT2) {
63async { 93 my $http_port = new Coro::Socket
64 slog 1, "accepting connections"; 94 LocalAddr => $SERVER_HOST,
65 while () { 95 LocalPort => $SERVER_PORT2,
66 $connections->down; 96 ReuseAddr => 1,
67 push @newcons, [$http_port->accept]; 97 Listen => 50,
68 #slog 3, "accepted @$connections ".scalar(@pool); 98 or die "unable to start server";
99
100 listen_on $http_port;
101}
102
103our $NOW;
104our $HTTP_NOW;
105
106Event->timer(interval => 1, hard => 1, cb => sub {
69 $::NOW = time; 107 $NOW = time;
70 if (@pool) { 108 $HTTP_NOW = time2str $NOW;
71 (pop @pool)->ready; 109})->now;
72 } else {
73 async \&handler;
74 }
75
76 }
77};
78 110
79package conn; 111package conn;
80 112
81use Socket; 113use Socket;
82use HTTP::Date; 114use HTTP::Date;
83use Convert::Scalar 'weaken'; 115use Convert::Scalar 'weaken';
84use Linux::AIO; 116use Linux::AIO;
85 117
86Linux::AIO::min_parallel $::AIO_PARALLEL; 118Linux::AIO::min_parallel $::AIO_PARALLEL;
87
88my $aio_requests = new Coro::Semaphore $::AIO_PARALLEL * 4;
89 119
90Event->io(fd => Linux::AIO::poll_fileno, 120Event->io(fd => Linux::AIO::poll_fileno,
91 poll => 'r', async => 1, 121 poll => 'r', async => 1,
92 cb => \&Linux::AIO::poll_cb); 122 cb => \&Linux::AIO::poll_cb);
93 123
120 or $self->err(500, "unable to decode peername"); 150 or $self->err(500, "unable to decode peername");
121 151
122 $self->{remote_addr} = inet_ntoa $iaddr; 152 $self->{remote_addr} = inet_ntoa $iaddr;
123 $self->{time} = $::NOW; 153 $self->{time} = $::NOW;
124 154
125 # enter ourselves into various lists
126 weaken ($conn{$self->{remote_addr}}{$self*1} = $self);
127
128 $::conns++; 155 $::conns++;
129 156
130 $self; 157 $self;
131} 158}
132 159
133sub DESTROY { 160sub DESTROY {
134 my $self = shift; 161 my $self = shift;
135
136 $::conns--; 162 $::conns--;
137
138 $self->eoconn; 163 $self->eoconn;
139 delete $conn{$self->{remote_addr}}{$self*1};
140} 164}
141 165
142# end of connection 166# end of connection
143sub eoconn { 167sub eoconn {
144 my $self = shift; 168 my $self = shift;
169
170 # clean up hints
171 delete $conn{$self->{remote_id}}{$self*1};
145 delete $uri{$self->{remote_addr}}{$self->{uri}}{$self*1}; 172 delete $uri{$self->{remote_id}}{$self->{uri}}{$self*1};
146} 173}
147 174
148sub slog { 175sub slog {
149 my $self = shift; 176 my $self = shift;
150 main::slog($_[0], ($self->{remote_id} || $self->{remote_addr}) ."> $_[1]"); 177 main::slog($_[0], ($self->{remote_id} || $self->{remote_addr}) ."> $_[1]");
154 my ($self, $code, $msg, $hdr, $content) = @_; 181 my ($self, $code, $msg, $hdr, $content) = @_;
155 my $res = "HTTP/1.1 $code $msg\015\012"; 182 my $res = "HTTP/1.1 $code $msg\015\012";
156 183
157 $self->{h}{connection} ||= $hdr->{Connection}; 184 $self->{h}{connection} ||= $hdr->{Connection};
158 185
159 $res .= "Date: ".(time2str $::NOW)."\015\012"; # slow? nah. :( 186 $res .= "Date: $HTTP_NOW\015\012";
160 187
161 while (my ($h, $v) = each %$hdr) { 188 while (my ($h, $v) = each %$hdr) {
162 $res .= "$h: $v\015\012" 189 $res .= "$h: $v\015\012"
163 } 190 }
164 $res .= "\015\012"; 191 $res .= "\015\012";
177sub err { 204sub err {
178 my $self = shift; 205 my $self = shift;
179 my ($code, $msg, $hdr, $content) = @_; 206 my ($code, $msg, $hdr, $content) = @_;
180 207
181 unless (defined $content) { 208 unless (defined $content) {
182 $content = "$code $msg"; 209 $content = "$code $msg\n";
183 $hdr->{"Content-Type"} = "text/plain"; 210 $hdr->{"Content-Type"} = "text/plain";
184 $hdr->{"Content-Length"} = length $content; 211 $hdr->{"Content-Length"} = length $content;
185 } 212 }
186 $hdr->{"Connection"} = "close"; 213 $hdr->{"Connection"} = "close";
187 214
212 } 239 }
213 240
214 $self->{h} = {}; 241 $self->{h} = {};
215 242
216 $fh->timeout($::RES_TIMEOUT); 243 $fh->timeout($::RES_TIMEOUT);
217 my $ip = $self->{remote_addr};
218
219 if ($blocked{$ip}) {
220 $self->err_blocked($blocked{$ip})
221 if $blocked{$ip} > $::NOW;
222
223 delete $blocked{$ip};
224 }
225
226 if (%{$conn{$ip}} > $::MAX_CONN_IP) {
227 my $delay = 120;
228 while (%{$conn{$ip}} > $::MAX_CONN_IP) {
229 if ($delay <= 0) {
230 $self->slog(2, "blocked ip $ip");
231 $self->err_blocked;
232 } else {
233 Coro::Event::do_timer(after => 3);
234 $delay -= 3;
235 }
236 }
237 }
238 244
239 $req =~ /^(?:\015\012)? 245 $req =~ /^(?:\015\012)?
240 (GET|HEAD) \040+ 246 (GET|HEAD) \040+
241 ([^\040]+) \040+ 247 ([^\040]+) \040+
242 HTTP\/([0-9]+\.[0-9]+) 248 HTTP\/([0-9]+\.[0-9]+)
267 273
268 $self->{h}{$h} = substr $v, 1 274 $self->{h}{$h} = substr $v, 1
269 while ($h, $v) = each %hdr; 275 while ($h, $v) = each %hdr;
270 } 276 }
271 277
278 # remote id should be unique per user
279 my $id = $self->{remote_addr};
280
281 if (exists $self->{h}{"client-ip"}) {
282 $id .= "[".$self->{h}{"client-ip"}."]";
283 } elsif (exists $self->{h}{"x-forwarded-for"}) {
284 $id .= "[".$self->{h}{"x-forwarded-for"}."]";
285 }
286
287 $self->{remote_id} = $id;
288
289 if ($blocked{$id}) {
290 $self->err_blocked($blocked{$id})
291 if $blocked{$id} > $::NOW;
292
293 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); $delay -= 4;
304 }
305 }
306 }
307
272 # find out server name and port 308 # find out server name and port
273 if ($self->{uri} =~ s/^http:\/\/([^\/?#]*)//i) { 309 if ($self->{uri} =~ s/^http:\/\/([^\/?#]*)//i) {
274 $host = $1; 310 $host = $1;
275 } else { 311 } else {
276 $host = $self->{h}{host}; 312 $host = $self->{h}{host};
285 $host = inet_ntoa $host; 321 $host = inet_ntoa $host;
286 } 322 }
287 323
288 $self->{server_name} = $host; 324 $self->{server_name} = $host;
289 325
290 # remote id should be unique per user 326 # enter ourselves into various lists
291 $self->{remote_id} = $self->{remote_addr}; 327 weaken ($conn{$id}{$self*1} = $self);
292
293 if (exists $self->{h}{"client-ip"}) {
294 $self->{remote_id} .= "[".$self->{h}{"client-ip"}."]";
295 } elsif (exists $self->{h}{"x-forwarded-for"}) {
296 $self->{remote_id} .= "[".$self->{h}{"x-forwarded-for"}."]";
297 }
298
299 weaken ($uri{$self->{remote_addr}}{$self->{uri}}{$self*1} = $self); 328 weaken ($uri{$id}{$self->{uri}}{$self*1} = $self);
300 329
301 eval { 330 eval {
302 $self->map_uri; 331 $self->map_uri;
303 $self->respond; 332 $self->respond;
304 }; 333 };
413 $idx); 442 $idx);
414} 443}
415 444
416sub handle_file { 445sub handle_file {
417 my $self = shift; 446 my $self = shift;
418 my $length = -s _; 447 my $length = $self->{stat}[7];
448 my $queue = $::transfers[$length >= $::TRANSFER_SMALL];
419 my $hdr = { 449 my $hdr = {
420 "Last-Modified" => time2str ((stat _)[9]), 450 "Last-Modified" => time2str ((stat _)[9]),
421 }; 451 };
422 452
423 my @code = (200, "ok"); 453 my @code = (200, "ok");
435 } 465 }
436 goto satisfiable if $l >= 0 && $l < $length && $h >= 0 && $h >= $l; 466 goto satisfiable if $l >= 0 && $l < $length && $h >= 0 && $h >= $l;
437 } 467 }
438 $hdr->{"Content-Range"} = "bytes */$length"; 468 $hdr->{"Content-Range"} = "bytes */$length";
439 $hdr->{"Content-Length"} = $length; 469 $hdr->{"Content-Length"} = $length;
440 $self->slog(9, "not satisfiable($self->{h}{range}|".$self->{h}{"user-agent"}.")");
441 $self->err(416, "not satisfiable", $hdr, ""); 470 $self->err(416, "not satisfiable", $hdr, "");
442 471
443satisfiable: 472satisfiable:
444 # check for segmented downloads 473 # check for segmented downloads
445 if ($l && $::NO_SEGMENTED) { 474 if ($l && $::NO_SEGMENTED) {
446 my $delay = 180; 475 my $delay = $::PER_TIMEOUT + 15;
447 while (%{$uri{$self->{remote_addr}}{$self->{uri}}} > 1) { 476 while (%{$uri{$self->{remote_id}}{$self->{uri}}} > 1) {
448 if ($delay <= 0) { 477 if ($delay <= 0) {
449 $self->err_segmented_download; 478 $self->err_segmented_download;
450 } else { 479 } else {
451 Coro::Event::do_timer(after => 3); $delay -= 3; 480 Coro::Event::do_timer(after => 4); $delay -= 4;
452 } 481 }
453 } 482 }
454 } 483 }
455 484
456 $hdr->{"Content-Range"} = "bytes $l-$h/$length"; 485 $hdr->{"Content-Range"} = "bytes $l-$h/$length";
467 $hdr->{"Content-Length"} = $length; 496 $hdr->{"Content-Length"} = $length;
468 497
469 $self->response(@code, $hdr, ""); 498 $self->response(@code, $hdr, "");
470 499
471 if ($self->{method} eq "GET") { 500 if ($self->{method} eq "GET") {
501 $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;
515
516 $self->{fh}->writable or return;
517
472 my ($fh, $buf, $r); 518 my ($fh, $buf, $r);
473 my $current = $Coro::current; 519 my $current = $Coro::current;
474 open $fh, "<", $self->{path} 520 open $fh, "<", $self->{path}
475 or die "$self->{path}: late open failure ($!)"; 521 or die "$self->{path}: late open failure ($!)";
476 522
485 while ($h > 0) { 531 while ($h > 0) {
486 if (0) { 532 if (0) {
487 sysread $fh, $buf, $h > $::BUFSIZE ? $::BUFSIZE : $h 533 sysread $fh, $buf, $h > $::BUFSIZE ? $::BUFSIZE : $h
488 or last; 534 or last;
489 } else { 535 } else {
490 undef $buf;
491 $aio_requests->down;
492 aio_read($fh, $l, ($h > $::BUFSIZE ? $::BUFSIZE : $h), 536 aio_read($fh, $l, ($h > $::BUFSIZE ? $::BUFSIZE : $h),
493 $buf, 0, sub { 537 $buf, 0, sub {
494 $r = $_[0]; 538 $r = $_[0];
495 $current->ready; 539 Coro::ready($current);
496 }); 540 });
497 &Coro::schedule; 541 &Coro::schedule;
498 $aio_requests->up;
499 last unless $r; 542 last unless $r;
500 } 543 }
501 my $w = $self->{fh}->syswrite($buf) 544 my $w = syswrite $self->{fh}, $buf
502 or last; 545 or last;
503 $::written += $w; 546 $::written += $w;
504 $self->{written} += $w; 547 $self->{written} += $w;
505 $l += $r; 548 $l += $r;
506 } 549 }
507 }
508 550
509 close $fh; 551 close $fh;
552 }
510} 553}
511 554
5121; 5551;

Diff Legend

Removed lines
+ Added lines
< Changed lines
> Changed lines