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Comparing Coro/myhttpd/httpd.pl (file contents):
Revision 1.47 by root, Tue Nov 20 01:56:21 2001 UTC vs.
Revision 1.82 by root, Sat Dec 2 03:31:42 2006 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; 5use Coro::Signal;
6use Coro::AIO ();
6 7
7use HTTP::Date; 8use HTTP::Date;
8use POSIX (); 9use POSIX ();
10
11use Compress::Zlib ();
9 12
10no utf8; 13no utf8;
11use bytes; 14use bytes;
12 15
13# at least on my machine, this thingy serves files 16# at least on my machine, this thingy serves files
… …
15# and quite a bit slower than thttpd :( 18# and quite a bit slower than thttpd :(
16 19
17$SIG{PIPE} = 'IGNORE'; 20$SIG{PIPE} = 'IGNORE';
18 21
19our $accesslog; 22our $accesslog;
23our $errorlog;
24
25our $NOW;
26our $HTTP_NOW;
27
28our $ERROR_LOG;
29our $ACCESS_LOG;
30
31Event->timer(interval => 1, hard => 1, cb => sub {
32 $NOW = time;
33 $HTTP_NOW = time2str $NOW;
34})->now;
35
36if ($ERROR_LOG) {
37 use IO::Handle;
38 open $errorlog, ">>$ERROR_LOG"
39 or die "$ERROR_LOG: $!";
40 $errorlog->autoflush(1);
41}
20 42
21if ($ACCESS_LOG) { 43if ($ACCESS_LOG) {
22 use IO::Handle; 44 use IO::Handle;
23 open $accesslog, ">>$ACCESS_LOG" 45 open $accesslog, ">>$ACCESS_LOG"
24 or die "$ACCESS_LOG: $!"; 46 or die "$ACCESS_LOG: $!";
… …
26} 48}
27 49
28sub slog { 50sub slog {
29 my $level = shift; 51 my $level = shift;
30 my $format = shift; 52 my $format = shift;
53 my $NOW = (POSIX::strftime "%Y-%m-%d %H:%M:%S", gmtime $::NOW);
31 printf "---: $format\n", @_; 54 printf "$NOW: $format\n", @_;
55 printf $errorlog "$NOW: $format\n", @_ if $errorlog;
32} 56}
33 57
34our $connections = new Coro::Semaphore $MAX_CONNECTS || 250; 58our $connections = new Coro::Semaphore $MAX_CONNECTS || 250;
35our $httpevent = new Coro::Signal; 59our $httpevent = new Coro::Signal;
36 60
37our $wait_factor = 0.95; 61our $queue_file = new transferqueue $MAX_TRANSFERS;
62our $queue_index = new transferqueue 10;
38 63
39our @transfers = ( 64our $tbf_top = new tbf rate => $TBF_RATE || 100000;
40 [(new Coro::Semaphore $MAX_TRANSFERS_SMALL || 50), 1], 65
41 [(new Coro::Semaphore $MAX_TRANSFERS_LARGE || 50), 1], 66my $unused_bytes = 0;
42); 67my $unused_last = time;
68
69sub unused_bandwidth {
70 $unused_bytes += $_[0];
71 if ($unused_last < $NOW - 30 && $unused_bytes / ($NOW - $unused_last) > 50000) {
72 $unused_last = $NOW;
73 $unused_bytes = 0;
74 $queue_file->force_wake_next;
75 slog 1, "forced filetransfer due to unused bandwidth";
76 }
77}
43 78
44my @newcons; 79my @newcons;
45my @pool; 80my @pool;
46 81
47# one "execution thread" 82# one "execution thread"
48sub handler { 83sub handler {
49 while () { 84 while () {
50 if (@newcons) { 85 if (@newcons) {
51 eval { 86 eval {
52 conn->new(@{pop @newcons})->handle; 87 conn->new (@{pop @newcons})->handle;
53 }; 88 };
54 slog 1, "$@" if $@ && !ref $@; 89 slog 1, "$@" if $@ && !ref $@;
90
91 $httpevent->broadcast; # only for testing, but doesn't matter much
92
55 $connections->up; 93 $connections->up;
56 } else { 94 } else {
57 last if @pool >= $MAX_POOL; 95 last if @pool >= $MAX_POOL;
58 push @pool, $Coro::current; 96 push @pool, $Coro::current;
59 schedule; 97 schedule;
… …
76 if (@pool) { 114 if (@pool) {
77 (pop @pool)->ready; 115 (pop @pool)->ready;
78 } else { 116 } else {
79 async \&handler; 117 async \&handler;
80 } 118 }
81
82 } 119 }
83 }; 120 };
84} 121}
85 122
86my $http_port = new Coro::Socket 123my $http_port = new Coro::Socket
87 LocalAddr => $SERVER_HOST, 124 LocalAddr => $SERVER_HOST,
88 LocalPort => $SERVER_PORT, 125 LocalPort => $SERVER_PORT,
89 ReuseAddr => 1, 126 ReuseAddr => 1,
90 Listen => 50, 127 Listen => 50,
91 or die "unable to start server"; 128 or die "unable to start server";
92 129
93listen_on $http_port; 130listen_on $http_port;
94 131
95if ($SERVER_PORT2) { 132if ($SERVER_PORT2) {
96 my $http_port = new Coro::Socket 133 my $http_port = new Coro::Socket
97 LocalAddr => $SERVER_HOST, 134 LocalAddr => $SERVER_HOST,
98 LocalPort => $SERVER_PORT2, 135 LocalPort => $SERVER_PORT2,
99 ReuseAddr => 1, 136 ReuseAddr => 1,
100 Listen => 50, 137 Listen => 50,
101 or die "unable to start server"; 138 or die "unable to start server";
102 139
103 listen_on $http_port; 140 listen_on $http_port;
104} 141}
105 142
106our $NOW;
107our $HTTP_NOW;
108
109Event->timer(interval => 1, hard => 1, cb => sub {
110 $NOW = time;
111 $HTTP_NOW = time2str $NOW;
112})->now;
113
114package conn; 143package conn;
144
145use strict;
146use bytes;
115 147
116use Socket; 148use Socket;
117use HTTP::Date; 149use HTTP::Date;
118use Convert::Scalar 'weaken'; 150use Convert::Scalar 'weaken';
119use Linux::AIO; 151use IO::AIO;
120 152
121Linux::AIO::min_parallel $::AIO_PARALLEL; 153IO::AIO::min_parallel $::AIO_PARALLEL;
122 154
123Event->io(fd => Linux::AIO::poll_fileno, 155Event->io (fd => IO::AIO::poll_fileno,
124 poll => 'r', async => 1, 156 poll => 'r', async => 1,
125 cb => \&Linux::AIO::poll_cb); 157 cb => \&IO::AIO::poll_cb);
126 158
127our %conn; # $conn{ip}{self} => connobj 159our %conn; # $conn{ip}{self} => connobj
128our %uri; # $uri{ip}{uri}{self} 160our %uri; # $uri{ip}{uri}{self}
129our %blocked; 161our %blocked;
130our %mimetype; 162our %mimetype;
131 163
132sub read_mimetypes { 164sub read_mimetypes {
133 local *M;
134 if (open M, "<mime_types") { 165 if (open my $fh, "<mime_types") {
135 while (<M>) { 166 while (<$fh>) {
136 if (/^([^#]\S+)\t+(\S+)$/) { 167 if (/^([^#]\S+)\t+(\S+)$/) {
137 $mimetype{lc $1} = $2; 168 $mimetype{lc $1} = $2;
138 } 169 }
139 } 170 }
140 } else { 171 } else {
… …
148 my $class = shift; 179 my $class = shift;
149 my $fh = shift; 180 my $fh = shift;
150 my $peername = shift; 181 my $peername = shift;
151 my $self = bless { fh => $fh }, $class; 182 my $self = bless { fh => $fh }, $class;
152 my (undef, $iaddr) = unpack_sockaddr_in $peername 183 my (undef, $iaddr) = unpack_sockaddr_in $peername
153 or $self->err(500, "unable to decode peername"); 184 or $self->err (500, "unable to decode peername");
154 185
186 $self->{remote_addr} =
155 $self->{remote_addr} = inet_ntoa $iaddr; 187 $self->{remote_id} = inet_ntoa $iaddr;
188
156 $self->{time} = $::NOW; 189 $self->{time} = $::NOW;
157 190
191 weaken ($Coro::current->{conn} = $self);
192
158 $::conns++; 193 ++$::conns;
194 $::maxconns = $::conns if $::conns > $::maxconns;
159 195
160 $self; 196 $self
161} 197}
162 198
163sub DESTROY { 199sub DESTROY {
164 my $self = shift; 200 my $self = shift;
201
202 close $self->{fh}; # workaround
165 $::conns--; 203 --$::conns;
166 $self->eoconn;
167} 204}
168 205
169# end of connection 206sub prune_cache {
170sub eoconn { 207 my $hash = $_[0];
171 my $self = shift;
172 208
173 # clean up hints 209 for (keys %$hash) {
174 delete $conn{$self->{remote_id}}{$self*1}; 210 if (ref $hash->{$_} eq HASH::) {
175 delete $uri{$self->{remote_id}}{$self->{uri}}{$self*1}; 211 prune_cache($hash->{$_});
176 212 unless (scalar keys %{$hash->{$_}}) {
177 $httpevent->broadcast; 213 delete $hash->{$_};
214 }
215 }
216 }
178} 217}
218
219sub prune_caches {
220 prune_cache \%conn;
221 prune_cache \%uri;
222
223 for (keys %blocked) {
224 delete $blocked{$_} unless $blocked{$_}[0] > $::NOW;
225 }
226}
227
228Event->timer (interval => 60, cb => \&prune_caches);
179 229
180sub slog { 230sub slog {
181 my $self = shift; 231 my $self = shift;
182 main::slog($_[0], ($self->{remote_id} || $self->{remote_addr}) ."> $_[1]"); 232 main::slog($_[0], "$self->{remote_id}> $_[1]");
183} 233}
184 234
185sub response { 235sub response {
186 my ($self, $code, $msg, $hdr, $content) = @_; 236 my ($self, $code, $msg, $hdr, $content) = @_;
187 my $res = "HTTP/1.1 $code $msg\015\012"; 237 my $res = "HTTP/1.1 $code $msg\015\012";
238 my $GZ = "";
188 239
189 if (exists $hdr->{Connection}) { 240 if (exists $hdr->{Connection}) {
190 if ($hdr->{Connection} =~ /close/) { 241 if ($hdr->{Connection} =~ /close/) {
191 $self->{h}{connection} = "close" 242 $self->{h}{connection} = "close"
192 } 243 }
… …
198 $self->{h}{connection} = "close" 249 $self->{h}{connection} = "close"
199 } 250 }
200 } 251 }
201 } 252 }
202 253
254 if ($self->{method} ne "HEAD"
255 && $self->{h}{"accept-encoding"} =~ /\bgzip\b/
256 && 400 < length $content
257 && $hdr->{"Content-Length"} == length $content
258 && !exists $hdr->{"Content-Encoding"}
259 ) {
260 my $orig = length $content;
261 $hdr->{"Content-Encoding"} = "gzip";
262 $content = Compress::Zlib::memGzip(\$content);
263 $hdr->{"Content-Length"} = length $content;
264 $GZ = sprintf "GZ%02d", 100 - 100*((length $content) / $orig);
265 }
266
203 $res .= "Date: $HTTP_NOW\015\012"; 267 $res .= "Date: $HTTP_NOW\015\012";
268 $res .= "Server: $::NAME\015\012";
204 269
205 while (my ($h, $v) = each %$hdr) { 270 while (my ($h, $v) = each %$hdr) {
206 $res .= "$h: $v\015\012" 271 $res .= "$h: $v\015\012"
207 } 272 }
208 $res .= "\015\012"; 273 $res .= "\015\012";
209 274
210 $res .= $content if defined $content and $self->{method} ne "HEAD"; 275 $res .= $content if defined $content and $self->{method} ne "HEAD";
211 276
212 my $log = (POSIX::strftime "%Y-%m-%d %H:%M:%S", gmtime $NOW). 277 my $log = (POSIX::strftime "%Y-%m-%d %H:%M:%S", gmtime $::NOW).
213 " $self->{remote_addr} \"$self->{uri}\" $code ".$hdr->{"Content-Length"}." \"$self->{h}{referer}\"\n"; 278 " $self->{remote_id} \"$self->{uri}\" $code ".$hdr->{"Content-Length"}.$GZ.
279 " \"$self->{h}{referer}\"\n";
214 280
215 print $accesslog $log if $accesslog; 281 print $::accesslog $log if $::accesslog;
216 print STDERR $log; 282 print STDERR $log;
217 283
218 $self->{written} += 284 $tbf_top->request(length $res, 1e6);
219 print {$self->{fh}} $res; 285 $self->{written} += print {$self->{fh}} $res;
220} 286}
221 287
222sub err { 288sub err {
223 my $self = shift; 289 my $self = shift;
224 my ($code, $msg, $hdr, $content) = @_; 290 my ($code, $msg, $hdr, $content) = @_;
… …
228 $hdr->{"Content-Type"} = "text/plain"; 294 $hdr->{"Content-Type"} = "text/plain";
229 $hdr->{"Content-Length"} = length $content; 295 $hdr->{"Content-Length"} = length $content;
230 } 296 }
231 $hdr->{"Connection"} = "close"; 297 $hdr->{"Connection"} = "close";
232 298
233 $self->response($code, $msg, $hdr, $content); 299 $self->response ($code, $msg, $hdr, $content);
234 300
235 die bless {}, err::; 301 die bless {}, err::
236} 302}
237 303
238sub handle { 304sub handle {
239 my $self = shift; 305 my $self = shift;
240 my $fh = $self->{fh}; 306 my $fh = $self->{fh};
241 307
242 my $host; 308 my $host;
243 309
244 $fh->timeout($::REQ_TIMEOUT); 310 $fh->timeout($::REQ_TIMEOUT);
245 while() { 311 while () {
246 $self->{reqs}++; 312 $self->{reqs}++;
247 313
248 # read request and parse first line 314 # read request and parse first line
249 my $req = $fh->readline("\015\012\015\012"); 315 my $req = $fh->readline("\015\012\015\012");
250 316
… …
279 my (%hdr, $h, $v); 345 my (%hdr, $h, $v);
280 346
281 $hdr{lc $1} .= ",$2" 347 $hdr{lc $1} .= ",$2"
282 while $req =~ /\G 348 while $req =~ /\G
283 ([^:\000-\040]+): 349 ([^:\000-\040]+):
284 [\008\040]* 350 [\011\040]*
285 ((?: [^\015\012]+ | \015\012[\008\040] )*) 351 ((?: [^\015\012]+ | \015\012[\011\040] )*)
286 \015\012 352 \015\012
287 /gxc; 353 /gxc;
288 354
289 $req =~ /\G\015\012$/ 355 $req =~ /\G\015\012$/
290 or $self->err(400, "bad request"); 356 or $self->err(400, "bad request");
… …
302 $id .= "[".$self->{h}{"x-forwarded-for"}."]"; 368 $id .= "[".$self->{h}{"x-forwarded-for"}."]";
303 } 369 }
304 370
305 $self->{remote_id} = $id; 371 $self->{remote_id} = $id;
306 372
373 weaken (local $conn{$id}{$self*1} = $self);
374
307 if ($blocked{$id}) { 375 if ($blocked{$id}) {
308 $self->err_blocked($blocked{$id}) 376 $self->err_blocked
309 if $blocked{$id} > $::NOW; 377 if $blocked{$id}[0] > $::NOW;
310 378
311 delete $blocked{$id}; 379 delete $blocked{$id};
312 }
313
314 if (%{$conn{$id}} >= $::MAX_CONN_IP) {
315 my $delay = $::PER_TIMEOUT + $::NOW + 15;
316 while (%{$conn{$id}} >= $::MAX_CONN_IP) {
317 if ($delay < $::NOW) {
318 $self->slog(2, "blocked ip $id");
319 $self->err_blocked;
320 } else {
321 $httpevent->wait;
322 }
323 }
324 } 380 }
325 381
326 # find out server name and port 382 # find out server name and port
327 if ($self->{uri} =~ s/^http:\/\/([^\/?#]*)//i) { 383 if ($self->{uri} =~ s/^http:\/\/([^\/?#]*)//i) {
328 $host = $1; 384 $host = $1;
… …
339 $host = inet_ntoa $host; 395 $host = inet_ntoa $host;
340 } 396 }
341 397
342 $self->{server_name} = $host; 398 $self->{server_name} = $host;
343 399
344 # enter ourselves into various lists
345 weaken ($conn{$id}{$self*1} = $self);
346 weaken ($uri{$id}{$self->{uri}}{$self*1} = $self); 400 weaken (local $uri{$id}{$self->{uri}}{$self*1} = $self);
347 401
348 eval { 402 eval {
349 $self->map_uri; 403 $self->map_uri;
350 $self->respond; 404 $self->respond;
351 }; 405 };
352 406
353 $self->eoconn;
354
355 die if $@ && !ref $@; 407 die if $@ && !ref $@;
356 408
357 last if $self->{h}{connection} =~ /close/; 409 last if $self->{h}{connection} =~ /close/i;
358 410
359 $httpevent->broadcast; 411 $httpevent->broadcast;
360 412
361 $fh->timeout($::PER_TIMEOUT); 413 $fh->timeout($::PER_TIMEOUT);
362 } 414 }
415}
416
417sub block {
418 my $self = shift;
419
420 $blocked{$self->{remote_id}} = [$::NOW + $_[0], $_[1]];
421 $self->slog(2, "blocked ip $self->{remote_id}");
422 $self->err_blocked;
363} 423}
364 424
365# uri => path mapping 425# uri => path mapping
366sub map_uri { 426sub map_uri {
367 my $self = shift; 427 my $self = shift;
… …
414 474
415sub respond { 475sub respond {
416 my $self = shift; 476 my $self = shift;
417 my $path = $self->{path}; 477 my $path = $self->{path};
418 478
419 stat $path 479 if ($self->{name} =~ s%^/internal/([^/]+)%%) {
420 or $self->err(404, "not found"); 480 if ($::internal{$1}) {
421 481 $::internal{$1}->($self);
422 $self->{stat} = [stat _];
423
424 # idiotic netscape sends idiotic headers AGAIN
425 my $ims = $self->{h}{"if-modified-since"} =~ /^([^;]+)/
426 ? str2time $1 : 0;
427
428 if (-d _ && -r _) {
429 # directory
430 if ($path !~ /\/$/) {
431 # create a redirect to get the trailing "/"
432 # we don't try to avoid the :80
433 $self->err(301, "moved permanently", { Location => "http://".$self->server_hostport."$self->{uri}/" });
434 } else { 482 } else {
435 $ims < $self->{stat}[9] 483 $self->err (404, "not found");
484 }
485 } else {
486
487 stat $path
436 or $self->err(304, "not modified"); 488 or $self->err (404, "not found");
437 489
438 if (-r "$path/index.html") { 490 $self->{stat} = [stat _];
439 # replace directory "size" by index.html filesize 491
440 $self->{stat}[7] = (stat ($self->{path} .= "/index.html"))[7]; 492 # idiotic netscape sends idiotic headers AGAIN
441 $self->handle_file; 493 my $ims = $self->{h}{"if-modified-since"} =~ /^([^;]+)/
494 ? str2time $1 : 0;
495
496 if (-d _ && -r _) {
497 # directory
498 if ($path !~ /\/$/) {
499 # create a redirect to get the trailing "/"
500 # we don't try to avoid the :80
501 $self->err (301, "moved permanently", { Location => "http://".$self->server_hostport."$self->{uri}/" });
442 } else { 502 } else {
503 $ims < $self->{stat}[9]
504 or $self->err (304, "not modified");
505
506 if (-r "$path/index.html") {
507 # replace directory "size" by index.html filesize
508 $self->{stat} = [stat ($self->{path} .= "/index.html")];
509 $self->handle_file ($queue_index, $tbf_top);
510 } else {
443 $self->handle_dir; 511 $self->handle_dir;
444 } 512 }
445 } 513 }
446 } elsif (-f _ && -r _) { 514 } elsif (-f _ && -r _) {
447 -x _ and $self->err(403, "forbidden"); 515 -x _ and $self->err (403, "forbidden");
448 $self->handle_file; 516
517 if (keys %{$conn{$self->{remote_id}}} > $::MAX_TRANSFERS_IP) {
518 my $timeout = $::NOW + 10;
519 while (keys %{$conn{$self->{remote_id}}} > $::MAX_TRANSFERS_IP) {
520 if ($timeout < $::NOW) {
521 $self->block($::BLOCKTIME, "too many connections");
522 } else {
523 $httpevent->wait;
524 }
525 }
526 }
527
528 $self->handle_file ($queue_file, $tbf_top);
449 } else { 529 } else {
450 $self->err(404, "not found"); 530 $self->err (404, "not found");
531 }
451 } 532 }
452} 533}
453 534
454sub handle_dir { 535sub handle_dir {
455 my $self = shift; 536 my $self = shift;
456 my $idx = $self->diridx; 537 my $idx = $self->diridx;
457 538
458 $self->response(200, "ok", 539 $self->response (200, "ok",
459 { 540 {
460 "Content-Type" => "text/html", 541 "Content-Type" => "text/html; charset=utf-8",
461 "Content-Length" => length $idx, 542 "Content-Length" => length $idx,
462 "Last-Modified" => time2str ((stat _)[9]), 543 "Last-Modified" => time2str ($self->{stat}[9]),
463 }, 544 },
464 $idx); 545 $idx);
465} 546}
466 547
467sub handle_file { 548sub handle_file {
468 my $self = shift; 549 my ($self, $queue, $tbf) = @_;
469 my $length = $self->{stat}[7]; 550 my $length = $self->{stat}[7];
470 my $queue = $::transfers[$length >= $::TRANSFER_SMALL];
471 my $hdr = { 551 my $hdr = {
472 "Last-Modified" => time2str ((stat _)[9]), 552 "Last-Modified" => time2str ((stat _)[9]),
553 "Accept-Ranges" => "bytes",
473 }; 554 };
474 555
475 my @code = (200, "ok"); 556 my @code = (200, "ok");
476 my ($l, $h); 557 my ($l, $h);
477 558
… …
487 } 568 }
488 goto satisfiable if $l >= 0 && $l < $length && $h >= 0 && $h >= $l; 569 goto satisfiable if $l >= 0 && $l < $length && $h >= 0 && $h >= $l;
489 } 570 }
490 $hdr->{"Content-Range"} = "bytes */$length"; 571 $hdr->{"Content-Range"} = "bytes */$length";
491 $hdr->{"Content-Length"} = $length; 572 $hdr->{"Content-Length"} = $length;
492 $self->err(416, "not satisfiable", $hdr, ""); 573 $self->err (416, "not satisfiable", $hdr, "");
493 574
494satisfiable: 575satisfiable:
495 # check for segmented downloads 576 # check for segmented downloads
496 if ($l && $::NO_SEGMENTED) { 577 if ($l && $::NO_SEGMENTED) {
497 my $delay = $::NOW + $::PER_TIMEOUT + 15; 578 my $timeout = $::NOW + 15;
498 while (%{$uri{$self->{remote_id}}{$self->{uri}}} > 1) { 579 while (keys %{$uri{$self->{remote_id}}{$self->{uri}}} > 1) {
499 if ($delay <= $::NOW) { 580 if ($timeout <= $::NOW) {
581 $self->block ($::BLOCKTIME, "segmented downloads are forbidden");
500 $self->err_segmented_download; 582 #$self->err_segmented_download;
501 } else { 583 } else {
502 $httpevent->wait; 584 $httpevent->wait;
503 } 585 }
504 } 586 }
505 } 587 }
… …
515 597
516 $self->{path} =~ /\.([^.]+)$/; 598 $self->{path} =~ /\.([^.]+)$/;
517 $hdr->{"Content-Type"} = $mimetype{lc $1} || "application/octet-stream"; 599 $hdr->{"Content-Type"} = $mimetype{lc $1} || "application/octet-stream";
518 $hdr->{"Content-Length"} = $length; 600 $hdr->{"Content-Length"} = $length;
519 601
520 $self->response(@code, $hdr, ""); 602 $self->response (@code, $hdr, "");
521 603
522 if ($self->{method} eq "GET") { 604 if ($self->{method} eq "GET") {
523 $self->{time} = $::NOW; 605 $self->{time} = $::NOW;
524
525 my $fudge = $queue->[0]->waiters;
526 $fudge = $fudge ? ($fudge+1)/$fudge : 1;
527
528 $queue->[1] *= $fudge;
529 my $transfer = $queue->[0]->guard;
530
531 if ($fudge != 1) {
532 $queue->[1] /= $fudge;
533 $queue->[1] = $queue->[1] * $::wait_factor
534 + ($::NOW - $self->{time}) * (1 - $::wait_factor);
535 }
536 $self->{time} = $::NOW; 606 $self->{written} = 0;
537 607
538 $self->{fh}->writable or return;
539
540 my ($fh, $buf, $r);
541 my $current = $Coro::current;
542 open $fh, "<", $self->{path} 608 open my $fh, "<", $self->{path}
543 or die "$self->{path}: late open failure ($!)"; 609 or die "$self->{path}: late open failure ($!)";
544 610
545 $h -= $l - 1; 611 $h -= $l - 1;
546 612
547 if (0) { 613 my $transfer = $queue->start_transfer ($h);
548 if ($l) { 614 my $locked;
549 sysseek $fh, $l, 0; 615 my $bufsize = $::WAIT_BUFSIZE; # initial buffer size
550 }
551 }
552 616
553 while ($h > 0) { 617 while ($h > 0) {
554 if (0) { 618 unless ($locked) {
555 sysread $fh, $buf, $h > $::BUFSIZE ? $::BUFSIZE : $h 619 if ($locked ||= $transfer->try ($::WAIT_INTERVAL)) {
620 $bufsize = $::BUFSIZE;
621 $self->{time} = $::NOW;
622 $self->{written} = 0;
623 }
624 }
625
626 if ($blocked{$self->{remote_id}}) {
627 $self->{h}{connection} = "close";
628 die bless {}, err::;
629 }
630
631 Coro::AIO::aio_read $fh, $l, ($h > $bufsize ? $bufsize : $h), my $buf, 0
556 or last; 632 or last;
557 } else { 633
558 aio_read($fh, $l, ($h > $::BUFSIZE ? $::BUFSIZE : $h), 634 $tbf->request (length $buf);
559 $buf, 0, sub {
560 $r = $_[0];
561 Coro::ready($current);
562 });
563 &Coro::schedule;
564 last unless $r;
565 }
566 my $w = syswrite $self->{fh}, $buf 635 my $w = syswrite $self->{fh}, $buf
567 or last; 636 or last;
568 $::written += $w; 637 $::written += $w;
569 $self->{written} += $w; 638 $self->{written} += $w;
570 $l += $r; 639 $l += $w;
571 } 640 }
572 641
573 close $fh; 642 close $fh;
574 } 643 }
575} 644}
576 645
5771; 6461
647

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