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Comparing Coro/myhttpd/httpd.pl (file contents):
Revision 1.6 by root, Fri Aug 10 21:03:41 2001 UTC vs.
Revision 1.37 by root, Sun Sep 2 01:03:53 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 5
6use HTTP::Date;
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
10# quite a bit faster than apache, ;) 12# quite a bit faster than apache, ;)
11# and quite a bit slower than thttpd :( 13# and quite a bit slower than thttpd :(
12 14
13$SIG{PIPE} = 'IGNORE'; 15$SIG{PIPE} = 'IGNORE';
14 16
17our $accesslog;
18
19if ($ACCESS_LOG) {
20 use IO::Handle;
21 open $accesslog, ">>$ACCESS_LOG"
22 or die "$ACCESS_LOG: $!";
23 $accesslog->autoflush(1);
24}
25
15sub slog { 26sub slog {
16 my $level = shift; 27 my $level = shift;
17 my $format = shift; 28 my $format = shift;
18 printf "---: $format\n", @_; 29 printf "---: $format\n", @_;
19} 30}
20 31
21my $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);
22 40
23my @newcons; 41my @newcons;
24my @pool; 42my @pool;
25 43
26# one "execution thread" 44# one "execution thread"
… …
43 61
44my $http_port = new Coro::Socket 62my $http_port = new Coro::Socket
45 LocalAddr => $SERVER_HOST, 63 LocalAddr => $SERVER_HOST,
46 LocalPort => $SERVER_PORT, 64 LocalPort => $SERVER_PORT,
47 ReuseAddr => 1, 65 ReuseAddr => 1,
48 Listen => 1, 66 Listen => 50,
49 or die "unable to start server"; 67 or die "unable to start server";
50 68
51push @listen_sockets, $http_port; 69push @listen_sockets, $http_port;
70
71our $NOW;
72our $HTTP_NOW;
73
74Event->timer(interval => 1, hard => 1, cb => sub {
75 $NOW = time;
76 $HTTP_NOW = time2str $NOW;
77})->now;
52 78
53# the "main thread" 79# the "main thread"
54async { 80async {
55 slog 1, "accepting connections"; 81 slog 1, "accepting connections";
56 while () { 82 while () {
57 $connections->down; 83 $connections->down;
58 push @newcons, [$http_port->accept]; 84 push @newcons, [$http_port->accept];
59 #slog 3, "accepted @$connections ".scalar(@pool); 85 #slog 3, "accepted @$connections ".scalar(@pool);
60 $::NOW = time;
61 if (@pool) { 86 if (@pool) {
62 (pop @pool)->ready; 87 (pop @pool)->ready;
63 } else { 88 } else {
64 async \&handler; 89 async \&handler;
65 } 90 }
… …
70package conn; 95package conn;
71 96
72use Socket; 97use Socket;
73use HTTP::Date; 98use HTTP::Date;
74use Convert::Scalar 'weaken'; 99use Convert::Scalar 'weaken';
100use Linux::AIO;
75 101
102Linux::AIO::min_parallel $::AIO_PARALLEL;
103
104Event->io(fd => Linux::AIO::poll_fileno,
105 poll => 'r', async => 1,
106 cb => \&Linux::AIO::poll_cb);
107
76our %conn; # $conn{ip}{fh} => connobj 108our %conn; # $conn{ip}{self} => connobj
109our %uri; # $uri{ip}{uri}{self}
77our %blocked; 110our %blocked;
111our %mimetype;
112
113sub read_mimetypes {
114 local *M;
115 if (open M, "<mime_types") {
116 while (<M>) {
117 if (/^([^#]\S+)\t+(\S+)$/) {
118 $mimetype{lc $1} = $2;
119 }
120 }
121 } else {
122 print "cannot open mime_types\n";
123 }
124}
125
126read_mimetypes;
78 127
79sub new { 128sub new {
80 my $class = shift; 129 my $class = shift;
81 my $peername = shift; 130 my $peername = shift;
82 my $fh = shift; 131 my $fh = shift;
83 my $self = bless { fh => $fh }, $class; 132 my $self = bless { fh => $fh }, $class;
84 my (undef, $iaddr) = unpack_sockaddr_in $peername 133 my (undef, $iaddr) = unpack_sockaddr_in $peername
85 or $self->err(500, "unable to decode peername"); 134 or $self->err(500, "unable to decode peername");
135
86 $self->{remote_addr} = inet_ntoa $iaddr; 136 $self->{remote_addr} = inet_ntoa $iaddr;
137 $self->{time} = $::NOW;
87 138
88 # enter ourselves into various lists 139 $::conns++;
89 weaken ($conn{$self->{remote_addr}}{$self*1} = $self);
90 140
91 $self; 141 $self;
92} 142}
93 143
94sub DESTROY { 144sub DESTROY {
95 my $self = shift; 145 my $self = shift;
146
147 $::conns--;
148
149 $self->eoconn;
150}
151
152# end of connection
153sub eoconn {
154 my $self = shift;
155
156 # clean up hints
96 delete $conn{$self->{remote_addr}}{$self*1}; 157 delete $conn{$self->{remote_id}}{$self*1};
97 delete $uri{$self->{uri}}{$self*1}; 158 delete $uri{$self->{remote_id}}{$self->{uri}}{$self*1};
98} 159}
99 160
100sub slog { 161sub slog {
101 my $self = shift; 162 my $self = shift;
102 main::slog($_[0], "$self->{remote_addr}> $_[1]"); 163 main::slog($_[0], ($self->{remote_id} || $self->{remote_addr}) ."> $_[1]");
103} 164}
104 165
105sub response { 166sub response {
106 my ($self, $code, $msg, $hdr, $content) = @_; 167 my ($self, $code, $msg, $hdr, $content) = @_;
107 my $res = "HTTP/1.0 $code $msg\015\012"; 168 my $res = "HTTP/1.1 $code $msg\015\012";
108 169
109 $res .= "Connection: close\015\012"; 170 $self->{h}{connection} ||= $hdr->{Connection};
110 $res .= "Date: ".(time2str $::NOW)."\015\012"; # slow? nah. :( 171
172 $res .= "Date: $HTTP_NOW\015\012";
111 173
112 while (my ($h, $v) = each %$hdr) { 174 while (my ($h, $v) = each %$hdr) {
113 $res .= "$h: $v\015\012" 175 $res .= "$h: $v\015\012"
114 } 176 }
177 $res .= "\015\012";
115 178
116 $res .= "\015\012$content" if defined $content; 179 $res .= $content if defined $content and $self->{method} ne "HEAD";
117 180
118 print STDERR "$self->{remote_addr} \"$self->{uri}\" $code ".$hdr->{"Content-Length"}." \"$self->{h}{referer}\"\n";#d# 181 my $log = "$self->{remote_addr} \"$self->{uri}\" $code ".$hdr->{"Content-Length"}." \"$self->{h}{referer}\"\n";
119 182
183 print $accesslog $log if $accesslog;
184 print STDERR $log;
185
186 $self->{written} +=
120 print {$self->{fh}} $res; 187 print {$self->{fh}} $res;
121} 188}
122 189
123sub err { 190sub err {
124 my $self = shift; 191 my $self = shift;
125 my ($code, $msg, $hdr, $content) = @_; 192 my ($code, $msg, $hdr, $content) = @_;
126 193
127 unless (defined $content) { 194 unless (defined $content) {
128 $content = "$code $msg"; 195 $content = "$code $msg\n";
129 $hdr->{"Content-Type"} = "text/plain"; 196 $hdr->{"Content-Type"} = "text/plain";
130 $hdr->{"Content-Length"} = length $content; 197 $hdr->{"Content-Length"} = length $content;
131 } 198 }
199 $hdr->{"Connection"} = "close";
132 200
133 $self->response($code, $msg, $hdr, $content); 201 $self->response($code, $msg, $hdr, $content);
134 202
135 die bless {}, err::; 203 die bless {}, err::;
136} 204}
137 205
138sub err_blocked {
139 my $self = shift;
140 my $ip = $self->{remote_addr};
141 my $time = time2str $blocked{$ip} = $::NOW + $::BLOCKTIME;
142 $self->err(403, "too many connections",
143 {
144 "Content-Type" => "text/html",
145 "Retry-After" => $::BLOCKTIME
146 },
147 <<EOF);
148<html><p>
149You have been blocked because you opened too many connections. You
150may retry at</p>
151
152 <p><blockquote>$time.</blockquote></p>
153
154<p>Until then, each new access will renew the block. You might want to have a
155look at the <a href="http://www.goof.com/pcg/marc/animefaq.html">FAQ</a>.</p>
156</html>
157EOF
158}
159
160sub handle { 206sub handle {
161 my $self = shift; 207 my $self = shift;
162 my $fh = $self->{fh}; 208 my $fh = $self->{fh};
163 209
210 my $host;
211
212 $fh->timeout($::REQ_TIMEOUT);
164 #while() { 213 while() {
214 $self->{reqs}++;
215
216 # read request and parse first line
217 my $req = $fh->readline("\015\012\015\012");
218
219 unless (defined $req) {
220 if (exists $self->{version}) {
221 last;
222 } else {
223 $self->err(408, "request timeout");
224 }
225 }
226
165 $self->{h} = {}; 227 $self->{h} = {};
166 228
167 # read request and parse first line
168 $fh->timeout($::REQ_TIMEOUT);
169 my $req = $fh->readline("\015\012\015\012");
170 $fh->timeout($::RES_TIMEOUT); 229 $fh->timeout($::RES_TIMEOUT);
171
172 defined $req or
173 $self->err(408, "request timeout");
174
175 my $ip = $self->{remote_addr};
176
177 if ($blocked{$ip}) {
178 $self->err_blocked($blocked{$ip})
179 if $blocked{$ip} > $::NOW;
180
181 delete $blocked{$ip};
182 }
183
184 if (%{$conn{$ip}} > $::MAX_CONN_IP) {
185 $self->slog("blocked ip $ip");
186 $self->err_blocked;
187 }
188 230
189 $req =~ /^(?:\015\012)? 231 $req =~ /^(?:\015\012)?
190 (GET|HEAD) \040+ 232 (GET|HEAD) \040+
191 ([^\040]+) \040+ 233 ([^\040]+) \040+
192 HTTP\/([0-9]+\.[0-9]+) 234 HTTP\/([0-9]+\.[0-9]+)
193 \015\012/gx 235 \015\012/gx
194 or $self->err(403, "method not allowed", { Allow => "GET,HEAD" }); 236 or $self->err(405, "method not allowed", { Allow => "GET,HEAD" });
195
196 $2 ne "1.0"
197 or $self->err(506, "http protocol version not supported");
198 237
199 $self->{method} = $1; 238 $self->{method} = $1;
200 $self->{uri} = $2; 239 $self->{uri} = $2;
240 $self->{version} = $3;
241
242 $3 =~ /^1\./
243 or $self->err(506, "http protocol version $3 not supported");
201 244
202 # parse headers 245 # parse headers
203 { 246 {
204 my (%hdr, $h, $v); 247 my (%hdr, $h, $v);
205 248
… …
216 259
217 $self->{h}{$h} = substr $v, 1 260 $self->{h}{$h} = substr $v, 1
218 while ($h, $v) = each %hdr; 261 while ($h, $v) = each %hdr;
219 } 262 }
220 263
264 # remote id should be unique per user
265 my $id = $self->{remote_addr};
266
267 if (exists $self->{h}{"client-ip"}) {
268 $id .= "[".$self->{h}{"client-ip"}."]";
269 } elsif (exists $self->{h}{"x-forwarded-for"}) {
270 $id .= "[".$self->{h}{"x-forwarded-for"}."]";
271 }
272
273 $self->{remote_id} = $id;
274
275 if ($blocked{$id}) {
276 $self->err_blocked($blocked{$id})
277 if $blocked{$id} > $::NOW;
278
279 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); $delay -= 4;
290 }
291 }
292 }
293
294 # find out server name and port
295 if ($self->{uri} =~ s/^http:\/\/([^\/?#]*)//i) {
296 $host = $1;
297 } else {
298 $host = $self->{h}{host};
299 }
300
301 if (defined $host) {
221 $self->{server_port} = $self->{h}{host} =~ s/:([0-9]+)$// ? $1 : 80; 302 $self->{server_port} = $host =~ s/:([0-9]+)$// ? $1 : 80;
303 } else {
304 ($self->{server_port}, $host)
305 = unpack_sockaddr_in $self->{fh}->getsockname
306 or $self->err(500, "unable to get socket name");
307 $host = inet_ntoa $host;
308 }
222 309
310 $self->{server_name} = $host;
311
312 # enter ourselves into various lists
313 weaken ($conn{$id}{$self*1} = $self);
223 weaken ($uri{$self->{uri}}{$self*1} = $self); 314 weaken ($uri{$id}{$self->{uri}}{$self*1} = $self);
224 315
316 eval {
225 $self->map_uri; 317 $self->map_uri;
226 $self->respond; 318 $self->respond;
319 };
320
321 $self->eoconn;
322
323 die if $@ && !ref $@;
324
325 last if $self->{h}{connection} =~ /close/ || $self->{version} < 1.1;
326
327 $fh->timeout($::PER_TIMEOUT);
227 #} 328 }
228} 329}
229 330
230# uri => path mapping 331# uri => path mapping
231sub map_uri { 332sub map_uri {
232 my $self = shift; 333 my $self = shift;
233 my $host = $self->{h}{host} || "default"; 334 my $host = $self->{server_name};
234 my $uri = $self->{uri}; 335 my $uri = $self->{uri};
235 336
236 # some massaging, also makes it more secure 337 # some massaging, also makes it more secure
237 $uri =~ s/%([0-9a-fA-F][0-9a-fA-F])/chr hex $1/ge; 338 $uri =~ s/%([0-9a-fA-F][0-9a-fA-F])/chr hex $1/ge;
238 $uri =~ s%//+%/%g; 339 $uri =~ s%//+%/%g;
… …
244 345
245 $self->{name} = $uri; 346 $self->{name} = $uri;
246 347
247 # now do the path mapping 348 # now do the path mapping
248 $self->{path} = "$::DOCROOT/$host$uri"; 349 $self->{path} = "$::DOCROOT/$host$uri";
249}
250 350
251sub server_address { 351 $self->access_check;
252 my $self = shift;
253 my ($port, $iaddr) = unpack_sockaddr_in $self->{fh}->getsockname
254 or $self->err(500, "unable to get socket name");
255 ((inet_ntoa $iaddr), $port);
256}
257
258sub server_host {
259 my $self = shift;
260 if (exists $self->{h}{host}) {
261 return $self->{h}{host};
262 } else {
263 return (($self->server_address)[0]);
264 }
265}
266
267sub server_hostport {
268 my $self = shift;
269 my ($host, $port);
270 if (exists $self->{h}{host}) {
271 ($host, $port) = ($self->{h}{host}, $self->{server_port});
272 } else {
273 ($host, $port) = $self->server_address;
274 }
275 $port = $port == 80 ? "" : ":$port";
276 $host.$port;
277} 352}
278 353
279sub _cgi { 354sub _cgi {
280 my $self = shift; 355 my $self = shift;
281 my $path = shift; 356 my $path = shift;
… …
284 # no two-way xxx supported 359 # no two-way xxx supported
285 if (0 == fork) { 360 if (0 == fork) {
286 open STDOUT, ">&".fileno($self->{fh}); 361 open STDOUT, ">&".fileno($self->{fh});
287 if (chdir $::DOCROOT) { 362 if (chdir $::DOCROOT) {
288 $ENV{SERVER_SOFTWARE} = "thttpd-myhttpd"; # we are thttpd-alike 363 $ENV{SERVER_SOFTWARE} = "thttpd-myhttpd"; # we are thttpd-alike
289 $ENV{HTTP_HOST} = $self->server_host; 364 $ENV{HTTP_HOST} = $self->{server_name};
290 $ENV{HTTP_PORT} = $self->{server_host}; 365 $ENV{HTTP_PORT} = $self->{server_port};
291 $ENV{SCRIPT_NAME} = $self->{name}; 366 $ENV{SCRIPT_NAME} = $self->{name};
292 exec $::INDEXPROG; 367 exec $path;
293 } 368 }
294 Coro::State::_exit(0); 369 Coro::State::_exit(0);
295 } else { 370 } else {
371 die;
296 } 372 }
373}
374
375sub server_hostport {
376 $_[0]{server_port} == 80
377 ? $_[0]{server_name}
378 : "$_[0]{server_name}:$_[0]{server_port}";
297} 379}
298 380
299sub respond { 381sub respond {
300 my $self = shift; 382 my $self = shift;
301 my $path = $self->{path}; 383 my $path = $self->{path};
302 384
303 stat $path 385 stat $path
304 or $self->err(404, "not found"); 386 or $self->err(404, "not found");
387
388 $self->{stat} = [stat _];
305 389
306 # idiotic netscape sends idiotic headers AGAIN 390 # idiotic netscape sends idiotic headers AGAIN
307 my $ims = $self->{h}{"if-modified-since"} =~ /^([^;]+)/ 391 my $ims = $self->{h}{"if-modified-since"} =~ /^([^;]+)/
308 ? str2time $1 : 0; 392 ? str2time $1 : 0;
309 393
310 if (-d _ && -r _) { 394 if (-d _ && -r _) {
311 # directory 395 # directory
312 if ($path !~ /\/$/) { 396 if ($path !~ /\/$/) {
313 # create a redirect to get the trailing "/" 397 # create a redirect to get the trailing "/"
314 my $host = $self->server_hostport; 398 # we don't try to avoid the :80
315 $self->err(301, "moved permanently", { Location => "http://$host$self->{uri}/" }); 399 $self->err(301, "moved permanently", { Location => "http://".$self->server_hostport."$self->{uri}/" });
316 } else { 400 } else {
317 $ims < (stat _)[9] 401 $ims < $self->{stat}[9]
318 or $self->err(304, "not modified"); 402 or $self->err(304, "not modified");
319 403
320 if ($self->{method} eq "GET") {
321 if (-r "$path/index.html") { 404 if (-r "$path/index.html") {
322 $self->{path} .= "/index.html"; 405 $self->{path} .= "/index.html";
323 $self->handle_file; 406 $self->handle_file;
324 } else { 407 } else {
325 $self->handle_dir; 408 $self->handle_dir;
326 }
327 } 409 }
328 } 410 }
329 } elsif (-f _ && -r _) { 411 } elsif (-f _ && -r _) {
330 -x _ and $self->err(403, "forbidden"); 412 -x _ and $self->err(403, "forbidden");
331 $self->handle_file; 413 $self->handle_file;
… …
334 } 416 }
335} 417}
336 418
337sub handle_dir { 419sub handle_dir {
338 my $self = shift; 420 my $self = shift;
339 $self->_cgi($::INDEXPROG); 421 my $idx = $self->diridx;
422
423 $self->response(200, "ok",
424 {
425 "Content-Type" => "text/html",
426 "Content-Length" => length $idx,
427 },
428 $idx);
340} 429}
341 430
342sub handle_file { 431sub handle_file {
343 my $self = shift; 432 my $self = shift;
344 my $length = -s _; 433 my $length = $self->{stat}[7];
434 my $queue = $::transfers[$length >= $::TRANSFER_SMALL];
345 my $hdr = { 435 my $hdr = {
346 "Last-Modified" => time2str ((stat _)[9]), 436 "Last-Modified" => time2str ((stat _)[9]),
347 }; 437 };
348 438
349 my @code = (200, "ok"); 439 my @code = (200, "ok");
… …
357 ($l, $h) = ($1, ($2 ne "" || $2 >= $length) ? $2 : $length - 1); 447 ($l, $h) = ($1, ($2 ne "" || $2 >= $length) ? $2 : $length - 1);
358 } else { 448 } else {
359 ($l, $h) = (0, $length - 1); 449 ($l, $h) = (0, $length - 1);
360 goto ignore; 450 goto ignore;
361 } 451 }
362 goto satisfiable if $l >= 0 && $l < $length && $h >= 0 && $h > $l; 452 goto satisfiable if $l >= 0 && $l < $length && $h >= 0 && $h >= $l;
363 } 453 }
364 $hdr->{"Content-Range"} = "bytes */$length"; 454 $hdr->{"Content-Range"} = "bytes */$length";
455 $hdr->{"Content-Length"} = $length;
365 $self->err(416, "not satisfiable", $hdr); 456 $self->err(416, "not satisfiable", $hdr, "");
366 457
367satisfiable: 458satisfiable:
368 # check for segmented downloads 459 # check for segmented downloads
369 if ($l && $NO_SEGMENTED) { 460 if ($l && $::NO_SEGMENTED) {
461 my $delay = $::PER_TIMEOUT + 15;
370 if (%{$uri{$self->{uri}}} > 1) { 462 while (%{$uri{$self->{remote_id}}{$self->{uri}}} > 1) {
371 $self->slog("segmented download refused\n"); 463 if ($delay <= 0) {
372 $self->err(400, "segmented downloads are not allowed"); 464 $self->err_segmented_download;
465 } else {
466 Coro::Event::do_timer(after => 4); $delay -= 4;
467 }
373 } 468 }
374 } 469 }
375 470
376 $hdr->{"Content-Range"} = "bytes $l-$h/$length"; 471 $hdr->{"Content-Range"} = "bytes $l-$h/$length";
377 @code = (206, "partial content"); 472 @code = (206, "partial content");
… …
380ignore: 475ignore:
381 } else { 476 } else {
382 ($l, $h) = (0, $length - 1); 477 ($l, $h) = (0, $length - 1);
383 } 478 }
384 479
385 if ($self->{path} =~ /\.html$/) { 480 $self->{path} =~ /\.([^.]+)$/;
386 $hdr->{"Content-Type"} = "text/html";
387 } else {
388 $hdr->{"Content-Type"} = "application/octet-stream"; 481 $hdr->{"Content-Type"} = $mimetype{lc $1} || "application/octet-stream";
389 }
390
391 $hdr->{"Content-Length"} = $length; 482 $hdr->{"Content-Length"} = $length;
392 483
393 $self->response(@code, $hdr, ""); 484 $self->response(@code, $hdr, "");
394 485
395 if ($self->{method} eq "GET") { 486 if ($self->{method} eq "GET") {
487 $self->{time} = $::NOW;
488
489 my $fudge = $queue->[0]->waiters;
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 $self->{fh}->writable or return;
503
396 my ($fh, $buf); 504 my ($fh, $buf, $r);
505 my $current = $Coro::current;
397 open $fh, "<", $self->{path} 506 open $fh, "<", $self->{path}
398 or die "$self->{path}: late open failure ($!)"; 507 or die "$self->{path}: late open failure ($!)";
399 508
400 if ($l) {
401 sysseek $fh, $l, 0
402 or die "$self->{path}: cannot seek to $l ($!)";
403 }
404
405 $h -= $l - 1; 509 $h -= $l - 1;
406 510
511 if (0) {
512 if ($l) {
513 sysseek $fh, $l, 0;
514 }
515 }
516
407 while ($h > 0) { 517 while ($h > 0) {
518 if (0) {
408 $h -= sysread $fh, $buf, $h > $::BUFSIZE ? $::BUFSIZE : $h; 519 sysread $fh, $buf, $h > $::BUFSIZE ? $::BUFSIZE : $h
409 $self->{fh}->syswrite($buf) 520 or last;
521 } else {
522 aio_read($fh, $l, ($h > $::BUFSIZE ? $::BUFSIZE : $h),
523 $buf, 0, sub {
524 $r = $_[0];
525 Coro::ready($current);
526 });
527 &Coro::schedule;
528 last unless $r;
529 }
530 my $w = syswrite $self->{fh}, $buf
410 or last; 531 or last;
532 $::written += $w;
533 $self->{written} += $w;
534 $l += $r;
411 } 535 }
412 }
413 536
414 close $fh; 537 close $fh;
538 }
415} 539}
416 540
4171; 5411;

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