… | |
… | |
2 | |
2 | |
3 | no warnings; |
3 | no warnings; |
4 | use strict; |
4 | use strict; |
5 | |
5 | |
6 | use AnyEvent (); |
6 | use AnyEvent (); |
7 | use AnyEvent::Util qw(WSAWOULDBLOCK); |
7 | use AnyEvent::Util qw(WSAEWOULDBLOCK); |
8 | use Scalar::Util (); |
8 | use Scalar::Util (); |
9 | use Carp (); |
9 | use Carp (); |
10 | use Fcntl (); |
10 | use Fcntl (); |
11 | use Errno qw/EAGAIN EINTR/; |
11 | use Errno qw(EAGAIN EINTR); |
12 | |
12 | |
13 | =head1 NAME |
13 | =head1 NAME |
14 | |
14 | |
15 | AnyEvent::Handle - non-blocking I/O on file handles via AnyEvent |
15 | AnyEvent::Handle - non-blocking I/O on file handles via AnyEvent |
16 | |
16 | |
17 | =cut |
17 | =cut |
18 | |
18 | |
19 | our $VERSION = '0.04'; |
19 | our $VERSION = 4.13; |
20 | |
20 | |
21 | =head1 SYNOPSIS |
21 | =head1 SYNOPSIS |
22 | |
22 | |
23 | use AnyEvent; |
23 | use AnyEvent; |
24 | use AnyEvent::Handle; |
24 | use AnyEvent::Handle; |
… | |
… | |
73 | The filehandle this L<AnyEvent::Handle> object will operate on. |
73 | The filehandle this L<AnyEvent::Handle> object will operate on. |
74 | |
74 | |
75 | NOTE: The filehandle will be set to non-blocking (using |
75 | NOTE: The filehandle will be set to non-blocking (using |
76 | AnyEvent::Util::fh_nonblocking). |
76 | AnyEvent::Util::fh_nonblocking). |
77 | |
77 | |
78 | =item on_eof => $cb->($self) |
78 | =item on_eof => $cb->($handle) |
79 | |
79 | |
80 | Set the callback to be called on EOF. |
80 | Set the callback to be called when an end-of-file condition is detcted, |
|
|
81 | i.e. in the case of a socket, when the other side has closed the |
|
|
82 | connection cleanly. |
81 | |
83 | |
82 | While not mandatory, it is highly recommended to set an eof callback, |
84 | While not mandatory, it is highly recommended to set an eof callback, |
83 | otherwise you might end up with a closed socket while you are still |
85 | otherwise you might end up with a closed socket while you are still |
84 | waiting for data. |
86 | waiting for data. |
85 | |
87 | |
86 | =item on_error => $cb->($self) |
88 | =item on_error => $cb->($handle, $fatal) |
87 | |
89 | |
88 | This is the fatal error callback, that is called when, well, a fatal error |
90 | This is the error callback, which is called when, well, some error |
89 | occurs, such as not being able to resolve the hostname, failure to connect |
91 | occured, such as not being able to resolve the hostname, failure to |
90 | or a read error. |
92 | connect or a read error. |
91 | |
93 | |
92 | The object will not be in a usable state when this callback has been |
94 | Some errors are fatal (which is indicated by C<$fatal> being true). On |
93 | called. |
95 | fatal errors the handle object will be shut down and will not be |
|
|
96 | usable. Non-fatal errors can be retried by simply returning, but it is |
|
|
97 | recommended to simply ignore this parameter and instead abondon the handle |
|
|
98 | object when this callback is invoked. |
94 | |
99 | |
95 | On callback entrance, the value of C<$!> contains the operating system |
100 | On callback entrance, the value of C<$!> contains the operating system |
96 | error (or C<ENOSPC>, C<EPIPE> or C<EBADMSG>). |
101 | error (or C<ENOSPC>, C<EPIPE>, C<ETIMEDOUT> or C<EBADMSG>). |
97 | |
102 | |
98 | While not mandatory, it is I<highly> recommended to set this callback, as |
103 | While not mandatory, it is I<highly> recommended to set this callback, as |
99 | you will not be notified of errors otherwise. The default simply calls |
104 | you will not be notified of errors otherwise. The default simply calls |
100 | die. |
105 | C<croak>. |
101 | |
106 | |
102 | =item on_read => $cb->($self) |
107 | =item on_read => $cb->($handle) |
103 | |
108 | |
104 | This sets the default read callback, which is called when data arrives |
109 | This sets the default read callback, which is called when data arrives |
105 | and no read request is in the queue. |
110 | and no read request is in the queue. |
106 | |
111 | |
107 | To access (and remove data from) the read buffer, use the C<< ->rbuf >> |
112 | To access (and remove data from) the read buffer, use the C<< ->rbuf >> |
108 | method or access the C<$self->{rbuf}> member directly. |
113 | method or access the C<$handle->{rbuf}> member directly. |
109 | |
114 | |
110 | When an EOF condition is detected then AnyEvent::Handle will first try to |
115 | When an EOF condition is detected then AnyEvent::Handle will first try to |
111 | feed all the remaining data to the queued callbacks and C<on_read> before |
116 | feed all the remaining data to the queued callbacks and C<on_read> before |
112 | calling the C<on_eof> callback. If no progress can be made, then a fatal |
117 | calling the C<on_eof> callback. If no progress can be made, then a fatal |
113 | error will be raised (with C<$!> set to C<EPIPE>). |
118 | error will be raised (with C<$!> set to C<EPIPE>). |
114 | |
119 | |
115 | =item on_drain => $cb->() |
120 | =item on_drain => $cb->($handle) |
116 | |
121 | |
117 | This sets the callback that is called when the write buffer becomes empty |
122 | This sets the callback that is called when the write buffer becomes empty |
118 | (or when the callback is set and the buffer is empty already). |
123 | (or when the callback is set and the buffer is empty already). |
119 | |
124 | |
120 | To append to the write buffer, use the C<< ->push_write >> method. |
125 | To append to the write buffer, use the C<< ->push_write >> method. |
|
|
126 | |
|
|
127 | =item timeout => $fractional_seconds |
|
|
128 | |
|
|
129 | If non-zero, then this enables an "inactivity" timeout: whenever this many |
|
|
130 | seconds pass without a successful read or write on the underlying file |
|
|
131 | handle, the C<on_timeout> callback will be invoked (and if that one is |
|
|
132 | missing, an C<ETIMEDOUT> error will be raised). |
|
|
133 | |
|
|
134 | Note that timeout processing is also active when you currently do not have |
|
|
135 | any outstanding read or write requests: If you plan to keep the connection |
|
|
136 | idle then you should disable the timout temporarily or ignore the timeout |
|
|
137 | in the C<on_timeout> callback. |
|
|
138 | |
|
|
139 | Zero (the default) disables this timeout. |
|
|
140 | |
|
|
141 | =item on_timeout => $cb->($handle) |
|
|
142 | |
|
|
143 | Called whenever the inactivity timeout passes. If you return from this |
|
|
144 | callback, then the timeout will be reset as if some activity had happened, |
|
|
145 | so this condition is not fatal in any way. |
121 | |
146 | |
122 | =item rbuf_max => <bytes> |
147 | =item rbuf_max => <bytes> |
123 | |
148 | |
124 | If defined, then a fatal error will be raised (with C<$!> set to C<ENOSPC>) |
149 | If defined, then a fatal error will be raised (with C<$!> set to C<ENOSPC>) |
125 | when the read buffer ever (strictly) exceeds this size. This is useful to |
150 | when the read buffer ever (strictly) exceeds this size. This is useful to |
… | |
… | |
132 | isn't finished). |
157 | isn't finished). |
133 | |
158 | |
134 | =item read_size => <bytes> |
159 | =item read_size => <bytes> |
135 | |
160 | |
136 | The default read block size (the amount of bytes this module will try to read |
161 | The default read block size (the amount of bytes this module will try to read |
137 | on each [loop iteration). Default: C<4096>. |
162 | during each (loop iteration). Default: C<8192>. |
138 | |
163 | |
139 | =item low_water_mark => <bytes> |
164 | =item low_water_mark => <bytes> |
140 | |
165 | |
141 | Sets the amount of bytes (default: C<0>) that make up an "empty" write |
166 | Sets the amount of bytes (default: C<0>) that make up an "empty" write |
142 | buffer: If the write reaches this size or gets even samller it is |
167 | buffer: If the write reaches this size or gets even samller it is |
… | |
… | |
165 | |
190 | |
166 | Use the given Net::SSLeay::CTX object to create the new TLS connection |
191 | Use the given Net::SSLeay::CTX object to create the new TLS connection |
167 | (unless a connection object was specified directly). If this parameter is |
192 | (unless a connection object was specified directly). If this parameter is |
168 | missing, then AnyEvent::Handle will use C<AnyEvent::Handle::TLS_CTX>. |
193 | missing, then AnyEvent::Handle will use C<AnyEvent::Handle::TLS_CTX>. |
169 | |
194 | |
|
|
195 | =item json => JSON or JSON::XS object |
|
|
196 | |
|
|
197 | This is the json coder object used by the C<json> read and write types. |
|
|
198 | |
|
|
199 | If you don't supply it, then AnyEvent::Handle will create and use a |
|
|
200 | suitable one, which will write and expect UTF-8 encoded JSON texts. |
|
|
201 | |
|
|
202 | Note that you are responsible to depend on the JSON module if you want to |
|
|
203 | use this functionality, as AnyEvent does not have a dependency itself. |
|
|
204 | |
|
|
205 | =item filter_r => $cb |
|
|
206 | |
|
|
207 | =item filter_w => $cb |
|
|
208 | |
|
|
209 | These exist, but are undocumented at this time. |
|
|
210 | |
170 | =back |
211 | =back |
171 | |
212 | |
172 | =cut |
213 | =cut |
173 | |
214 | |
174 | sub new { |
215 | sub new { |
… | |
… | |
183 | if ($self->{tls}) { |
224 | if ($self->{tls}) { |
184 | require Net::SSLeay; |
225 | require Net::SSLeay; |
185 | $self->starttls (delete $self->{tls}, delete $self->{tls_ctx}); |
226 | $self->starttls (delete $self->{tls}, delete $self->{tls_ctx}); |
186 | } |
227 | } |
187 | |
228 | |
188 | $self->on_eof (delete $self->{on_eof} ) if $self->{on_eof}; |
229 | $self->{_activity} = AnyEvent->now; |
189 | $self->on_error (delete $self->{on_error}) if $self->{on_error}; |
230 | $self->_timeout; |
|
|
231 | |
190 | $self->on_drain (delete $self->{on_drain}) if $self->{on_drain}; |
232 | $self->on_drain (delete $self->{on_drain}) if $self->{on_drain}; |
191 | $self->on_read (delete $self->{on_read} ) if $self->{on_read}; |
233 | $self->on_read (delete $self->{on_read} ) if $self->{on_read}; |
192 | |
234 | |
193 | $self->start_read; |
|
|
194 | |
|
|
195 | $self |
235 | $self |
196 | } |
236 | } |
197 | |
237 | |
198 | sub _shutdown { |
238 | sub _shutdown { |
199 | my ($self) = @_; |
239 | my ($self) = @_; |
200 | |
240 | |
|
|
241 | delete $self->{_tw}; |
201 | delete $self->{rw}; |
242 | delete $self->{_rw}; |
202 | delete $self->{ww}; |
243 | delete $self->{_ww}; |
203 | delete $self->{fh}; |
244 | delete $self->{fh}; |
204 | } |
|
|
205 | |
245 | |
|
|
246 | $self->stoptls; |
|
|
247 | } |
|
|
248 | |
206 | sub error { |
249 | sub _error { |
207 | my ($self) = @_; |
250 | my ($self, $errno, $fatal) = @_; |
208 | |
251 | |
209 | { |
|
|
210 | local $!; |
|
|
211 | $self->_shutdown; |
252 | $self->_shutdown |
212 | } |
253 | if $fatal; |
|
|
254 | |
|
|
255 | $! = $errno; |
213 | |
256 | |
214 | if ($self->{on_error}) { |
257 | if ($self->{on_error}) { |
215 | $self->{on_error}($self); |
258 | $self->{on_error}($self, $fatal); |
216 | } else { |
259 | } else { |
217 | Carp::croak "AnyEvent::Handle uncaught fatal error: $!"; |
260 | Carp::croak "AnyEvent::Handle uncaught error: $!"; |
218 | } |
261 | } |
219 | } |
262 | } |
220 | |
263 | |
221 | =item $fh = $handle->fh |
264 | =item $fh = $handle->fh |
222 | |
265 | |
223 | This method returns the file handle of the L<AnyEvent::Handle> object. |
266 | This method returns the file handle of the L<AnyEvent::Handle> object. |
224 | |
267 | |
225 | =cut |
268 | =cut |
226 | |
269 | |
227 | sub fh { $_[0]->{fh} } |
270 | sub fh { $_[0]{fh} } |
228 | |
271 | |
229 | =item $handle->on_error ($cb) |
272 | =item $handle->on_error ($cb) |
230 | |
273 | |
231 | Replace the current C<on_error> callback (see the C<on_error> constructor argument). |
274 | Replace the current C<on_error> callback (see the C<on_error> constructor argument). |
232 | |
275 | |
… | |
… | |
242 | |
285 | |
243 | =cut |
286 | =cut |
244 | |
287 | |
245 | sub on_eof { |
288 | sub on_eof { |
246 | $_[0]{on_eof} = $_[1]; |
289 | $_[0]{on_eof} = $_[1]; |
|
|
290 | } |
|
|
291 | |
|
|
292 | =item $handle->on_timeout ($cb) |
|
|
293 | |
|
|
294 | Replace the current C<on_timeout> callback, or disables the callback |
|
|
295 | (but not the timeout) if C<$cb> = C<undef>. See C<timeout> constructor |
|
|
296 | argument. |
|
|
297 | |
|
|
298 | =cut |
|
|
299 | |
|
|
300 | sub on_timeout { |
|
|
301 | $_[0]{on_timeout} = $_[1]; |
|
|
302 | } |
|
|
303 | |
|
|
304 | ############################################################################# |
|
|
305 | |
|
|
306 | =item $handle->timeout ($seconds) |
|
|
307 | |
|
|
308 | Configures (or disables) the inactivity timeout. |
|
|
309 | |
|
|
310 | =cut |
|
|
311 | |
|
|
312 | sub timeout { |
|
|
313 | my ($self, $timeout) = @_; |
|
|
314 | |
|
|
315 | $self->{timeout} = $timeout; |
|
|
316 | $self->_timeout; |
|
|
317 | } |
|
|
318 | |
|
|
319 | # reset the timeout watcher, as neccessary |
|
|
320 | # also check for time-outs |
|
|
321 | sub _timeout { |
|
|
322 | my ($self) = @_; |
|
|
323 | |
|
|
324 | if ($self->{timeout}) { |
|
|
325 | my $NOW = AnyEvent->now; |
|
|
326 | |
|
|
327 | # when would the timeout trigger? |
|
|
328 | my $after = $self->{_activity} + $self->{timeout} - $NOW; |
|
|
329 | |
|
|
330 | # now or in the past already? |
|
|
331 | if ($after <= 0) { |
|
|
332 | $self->{_activity} = $NOW; |
|
|
333 | |
|
|
334 | if ($self->{on_timeout}) { |
|
|
335 | $self->{on_timeout}($self); |
|
|
336 | } else { |
|
|
337 | $self->_error (&Errno::ETIMEDOUT); |
|
|
338 | } |
|
|
339 | |
|
|
340 | # callback could have changed timeout value, optimise |
|
|
341 | return unless $self->{timeout}; |
|
|
342 | |
|
|
343 | # calculate new after |
|
|
344 | $after = $self->{timeout}; |
|
|
345 | } |
|
|
346 | |
|
|
347 | Scalar::Util::weaken $self; |
|
|
348 | return unless $self; # ->error could have destroyed $self |
|
|
349 | |
|
|
350 | $self->{_tw} ||= AnyEvent->timer (after => $after, cb => sub { |
|
|
351 | delete $self->{_tw}; |
|
|
352 | $self->_timeout; |
|
|
353 | }); |
|
|
354 | } else { |
|
|
355 | delete $self->{_tw}; |
|
|
356 | } |
247 | } |
357 | } |
248 | |
358 | |
249 | ############################################################################# |
359 | ############################################################################# |
250 | |
360 | |
251 | =back |
361 | =back |
… | |
… | |
288 | =cut |
398 | =cut |
289 | |
399 | |
290 | sub _drain_wbuf { |
400 | sub _drain_wbuf { |
291 | my ($self) = @_; |
401 | my ($self) = @_; |
292 | |
402 | |
293 | if (!$self->{ww} && length $self->{wbuf}) { |
403 | if (!$self->{_ww} && length $self->{wbuf}) { |
|
|
404 | |
294 | Scalar::Util::weaken $self; |
405 | Scalar::Util::weaken $self; |
|
|
406 | |
295 | my $cb = sub { |
407 | my $cb = sub { |
296 | my $len = syswrite $self->{fh}, $self->{wbuf}; |
408 | my $len = syswrite $self->{fh}, $self->{wbuf}; |
297 | |
409 | |
298 | if ($len >= 0) { |
410 | if ($len >= 0) { |
299 | substr $self->{wbuf}, 0, $len, ""; |
411 | substr $self->{wbuf}, 0, $len, ""; |
|
|
412 | |
|
|
413 | $self->{_activity} = AnyEvent->now; |
300 | |
414 | |
301 | $self->{on_drain}($self) |
415 | $self->{on_drain}($self) |
302 | if $self->{low_water_mark} >= length $self->{wbuf} |
416 | if $self->{low_water_mark} >= length $self->{wbuf} |
303 | && $self->{on_drain}; |
417 | && $self->{on_drain}; |
304 | |
418 | |
305 | delete $self->{ww} unless length $self->{wbuf}; |
419 | delete $self->{_ww} unless length $self->{wbuf}; |
306 | } elsif ($! != EAGAIN && $! != EINTR && $! != WSAWOULDBLOCK) { |
420 | } elsif ($! != EAGAIN && $! != EINTR && $! != WSAEWOULDBLOCK) { |
307 | $self->error; |
421 | $self->_error ($!, 1); |
308 | } |
422 | } |
309 | }; |
423 | }; |
310 | |
424 | |
|
|
425 | # try to write data immediately |
|
|
426 | $cb->(); |
|
|
427 | |
|
|
428 | # if still data left in wbuf, we need to poll |
311 | $self->{ww} = AnyEvent->io (fh => $self->{fh}, poll => "w", cb => $cb); |
429 | $self->{_ww} = AnyEvent->io (fh => $self->{fh}, poll => "w", cb => $cb) |
312 | |
430 | if length $self->{wbuf}; |
313 | $cb->($self); |
|
|
314 | }; |
431 | }; |
315 | } |
432 | } |
316 | |
433 | |
317 | our %WH; |
434 | our %WH; |
318 | |
435 | |
… | |
… | |
329 | @_ = ($WH{$type} or Carp::croak "unsupported type passed to AnyEvent::Handle::push_write") |
446 | @_ = ($WH{$type} or Carp::croak "unsupported type passed to AnyEvent::Handle::push_write") |
330 | ->($self, @_); |
447 | ->($self, @_); |
331 | } |
448 | } |
332 | |
449 | |
333 | if ($self->{filter_w}) { |
450 | if ($self->{filter_w}) { |
334 | $self->{filter_w}->($self, \$_[0]); |
451 | $self->{filter_w}($self, \$_[0]); |
335 | } else { |
452 | } else { |
336 | $self->{wbuf} .= $_[0]; |
453 | $self->{wbuf} .= $_[0]; |
337 | $self->_drain_wbuf; |
454 | $self->_drain_wbuf; |
338 | } |
455 | } |
339 | } |
456 | } |
340 | |
457 | |
341 | =item $handle->push_write (type => @args) |
458 | =item $handle->push_write (type => @args) |
342 | |
459 | |
343 | =item $handle->unshift_write (type => @args) |
|
|
344 | |
|
|
345 | Instead of formatting your data yourself, you can also let this module do |
460 | Instead of formatting your data yourself, you can also let this module do |
346 | the job by specifying a type and type-specific arguments. |
461 | the job by specifying a type and type-specific arguments. |
347 | |
462 | |
348 | Predefined types are (if you have ideas for additional types, feel free to |
463 | Predefined types are (if you have ideas for additional types, feel free to |
349 | drop by and tell us): |
464 | drop by and tell us): |
… | |
… | |
353 | =item netstring => $string |
468 | =item netstring => $string |
354 | |
469 | |
355 | Formats the given value as netstring |
470 | Formats the given value as netstring |
356 | (http://cr.yp.to/proto/netstrings.txt, this is not a recommendation to use them). |
471 | (http://cr.yp.to/proto/netstrings.txt, this is not a recommendation to use them). |
357 | |
472 | |
358 | =back |
|
|
359 | |
|
|
360 | =cut |
473 | =cut |
361 | |
474 | |
362 | register_write_type netstring => sub { |
475 | register_write_type netstring => sub { |
363 | my ($self, $string) = @_; |
476 | my ($self, $string) = @_; |
364 | |
477 | |
365 | sprintf "%d:%s,", (length $string), $string |
478 | sprintf "%d:%s,", (length $string), $string |
366 | }; |
479 | }; |
367 | |
480 | |
|
|
481 | =item json => $array_or_hashref |
|
|
482 | |
|
|
483 | Encodes the given hash or array reference into a JSON object. Unless you |
|
|
484 | provide your own JSON object, this means it will be encoded to JSON text |
|
|
485 | in UTF-8. |
|
|
486 | |
|
|
487 | JSON objects (and arrays) are self-delimiting, so you can write JSON at |
|
|
488 | one end of a handle and read them at the other end without using any |
|
|
489 | additional framing. |
|
|
490 | |
|
|
491 | The generated JSON text is guaranteed not to contain any newlines: While |
|
|
492 | this module doesn't need delimiters after or between JSON texts to be |
|
|
493 | able to read them, many other languages depend on that. |
|
|
494 | |
|
|
495 | A simple RPC protocol that interoperates easily with others is to send |
|
|
496 | JSON arrays (or objects, although arrays are usually the better choice as |
|
|
497 | they mimic how function argument passing works) and a newline after each |
|
|
498 | JSON text: |
|
|
499 | |
|
|
500 | $handle->push_write (json => ["method", "arg1", "arg2"]); # whatever |
|
|
501 | $handle->push_write ("\012"); |
|
|
502 | |
|
|
503 | An AnyEvent::Handle receiver would simply use the C<json> read type and |
|
|
504 | rely on the fact that the newline will be skipped as leading whitespace: |
|
|
505 | |
|
|
506 | $handle->push_read (json => sub { my $array = $_[1]; ... }); |
|
|
507 | |
|
|
508 | Other languages could read single lines terminated by a newline and pass |
|
|
509 | this line into their JSON decoder of choice. |
|
|
510 | |
|
|
511 | =cut |
|
|
512 | |
|
|
513 | register_write_type json => sub { |
|
|
514 | my ($self, $ref) = @_; |
|
|
515 | |
|
|
516 | require JSON; |
|
|
517 | |
|
|
518 | $self->{json} ? $self->{json}->encode ($ref) |
|
|
519 | : JSON::encode_json ($ref) |
|
|
520 | }; |
|
|
521 | |
|
|
522 | =back |
|
|
523 | |
368 | =item AnyEvent::Handle::register_write_type type => $coderef->($self, @args) |
524 | =item AnyEvent::Handle::register_write_type type => $coderef->($handle, @args) |
369 | |
525 | |
370 | This function (not method) lets you add your own types to C<push_write>. |
526 | This function (not method) lets you add your own types to C<push_write>. |
371 | Whenever the given C<type> is used, C<push_write> will invoke the code |
527 | Whenever the given C<type> is used, C<push_write> will invoke the code |
372 | reference with the handle object and the remaining arguments. |
528 | reference with the handle object and the remaining arguments. |
373 | |
529 | |
… | |
… | |
409 | the specified number of bytes which give an XML datagram. |
565 | the specified number of bytes which give an XML datagram. |
410 | |
566 | |
411 | # in the default state, expect some header bytes |
567 | # in the default state, expect some header bytes |
412 | $handle->on_read (sub { |
568 | $handle->on_read (sub { |
413 | # some data is here, now queue the length-header-read (4 octets) |
569 | # some data is here, now queue the length-header-read (4 octets) |
414 | shift->unshift_read_chunk (4, sub { |
570 | shift->unshift_read (chunk => 4, sub { |
415 | # header arrived, decode |
571 | # header arrived, decode |
416 | my $len = unpack "N", $_[1]; |
572 | my $len = unpack "N", $_[1]; |
417 | |
573 | |
418 | # now read the payload |
574 | # now read the payload |
419 | shift->unshift_read_chunk ($len, sub { |
575 | shift->unshift_read (chunk => $len, sub { |
420 | my $xml = $_[1]; |
576 | my $xml = $_[1]; |
421 | # handle xml |
577 | # handle xml |
422 | }); |
578 | }); |
423 | }); |
579 | }); |
424 | }); |
580 | }); |
… | |
… | |
431 | |
587 | |
432 | # request one |
588 | # request one |
433 | $handle->push_write ("request 1\015\012"); |
589 | $handle->push_write ("request 1\015\012"); |
434 | |
590 | |
435 | # we expect "ERROR" or "OK" as response, so push a line read |
591 | # we expect "ERROR" or "OK" as response, so push a line read |
436 | $handle->push_read_line (sub { |
592 | $handle->push_read (line => sub { |
437 | # if we got an "OK", we have to _prepend_ another line, |
593 | # if we got an "OK", we have to _prepend_ another line, |
438 | # so it will be read before the second request reads its 64 bytes |
594 | # so it will be read before the second request reads its 64 bytes |
439 | # which are already in the queue when this callback is called |
595 | # which are already in the queue when this callback is called |
440 | # we don't do this in case we got an error |
596 | # we don't do this in case we got an error |
441 | if ($_[1] eq "OK") { |
597 | if ($_[1] eq "OK") { |
442 | $_[0]->unshift_read_line (sub { |
598 | $_[0]->unshift_read (line => sub { |
443 | my $response = $_[1]; |
599 | my $response = $_[1]; |
444 | ... |
600 | ... |
445 | }); |
601 | }); |
446 | } |
602 | } |
447 | }); |
603 | }); |
448 | |
604 | |
449 | # request two |
605 | # request two |
450 | $handle->push_write ("request 2\015\012"); |
606 | $handle->push_write ("request 2\015\012"); |
451 | |
607 | |
452 | # simply read 64 bytes, always |
608 | # simply read 64 bytes, always |
453 | $handle->push_read_chunk (64, sub { |
609 | $handle->push_read (chunk => 64, sub { |
454 | my $response = $_[1]; |
610 | my $response = $_[1]; |
455 | ... |
611 | ... |
456 | }); |
612 | }); |
457 | |
613 | |
458 | =over 4 |
614 | =over 4 |
459 | |
615 | |
460 | =cut |
616 | =cut |
461 | |
617 | |
462 | sub _drain_rbuf { |
618 | sub _drain_rbuf { |
463 | my ($self) = @_; |
619 | my ($self) = @_; |
|
|
620 | |
|
|
621 | local $self->{_in_drain} = 1; |
464 | |
622 | |
465 | if ( |
623 | if ( |
466 | defined $self->{rbuf_max} |
624 | defined $self->{rbuf_max} |
467 | && $self->{rbuf_max} < length $self->{rbuf} |
625 | && $self->{rbuf_max} < length $self->{rbuf} |
468 | ) { |
626 | ) { |
469 | $! = &Errno::ENOSPC; return $self->error; |
627 | return $self->_error (&Errno::ENOSPC, 1); |
470 | } |
628 | } |
471 | |
629 | |
472 | return if $self->{in_drain}; |
630 | while () { |
473 | local $self->{in_drain} = 1; |
|
|
474 | |
|
|
475 | while (my $len = length $self->{rbuf}) { |
|
|
476 | no strict 'refs'; |
631 | no strict 'refs'; |
|
|
632 | |
|
|
633 | my $len = length $self->{rbuf}; |
|
|
634 | |
477 | if (my $cb = shift @{ $self->{queue} }) { |
635 | if (my $cb = shift @{ $self->{_queue} }) { |
478 | unless ($cb->($self)) { |
636 | unless ($cb->($self)) { |
479 | if ($self->{eof}) { |
637 | if ($self->{_eof}) { |
480 | # no progress can be made (not enough data and no data forthcoming) |
638 | # no progress can be made (not enough data and no data forthcoming) |
481 | $! = &Errno::EPIPE; return $self->error; |
639 | return $self->_error (&Errno::EPIPE, 1); |
482 | } |
640 | } |
483 | |
641 | |
484 | unshift @{ $self->{queue} }, $cb; |
642 | unshift @{ $self->{_queue} }, $cb; |
485 | return; |
643 | last; |
486 | } |
644 | } |
487 | } elsif ($self->{on_read}) { |
645 | } elsif ($self->{on_read}) { |
488 | $self->{on_read}($self); |
646 | $self->{on_read}($self); |
489 | |
647 | |
490 | if ( |
648 | if ( |
491 | $self->{eof} # if no further data will arrive |
|
|
492 | && $len == length $self->{rbuf} # and no data has been consumed |
649 | $len == length $self->{rbuf} # if no data has been consumed |
493 | && !@{ $self->{queue} } # and the queue is still empty |
650 | && !@{ $self->{_queue} } # and the queue is still empty |
494 | && $self->{on_read} # and we still want to read data |
651 | && $self->{on_read} # but we still have on_read |
495 | ) { |
652 | ) { |
|
|
653 | # no further data will arrive |
496 | # then no progress can be made |
654 | # so no progress can be made |
497 | $! = &Errno::EPIPE; return $self->error; |
655 | return $self->_error (&Errno::EPIPE, 1) |
|
|
656 | if $self->{_eof}; |
|
|
657 | |
|
|
658 | last; # more data might arrive |
498 | } |
659 | } |
499 | } else { |
660 | } else { |
500 | # read side becomes idle |
661 | # read side becomes idle |
501 | delete $self->{rw}; |
662 | delete $self->{_rw}; |
502 | return; |
663 | last; |
503 | } |
664 | } |
504 | } |
665 | } |
505 | |
666 | |
506 | if ($self->{eof}) { |
|
|
507 | $self->_shutdown; |
|
|
508 | $self->{on_eof}($self) |
667 | $self->{on_eof}($self) |
509 | if $self->{on_eof}; |
668 | if $self->{_eof} && $self->{on_eof}; |
|
|
669 | |
|
|
670 | # may need to restart read watcher |
|
|
671 | unless ($self->{_rw}) { |
|
|
672 | $self->start_read |
|
|
673 | if $self->{on_read} || @{ $self->{_queue} }; |
510 | } |
674 | } |
511 | } |
675 | } |
512 | |
676 | |
513 | =item $handle->on_read ($cb) |
677 | =item $handle->on_read ($cb) |
514 | |
678 | |
… | |
… | |
520 | |
684 | |
521 | sub on_read { |
685 | sub on_read { |
522 | my ($self, $cb) = @_; |
686 | my ($self, $cb) = @_; |
523 | |
687 | |
524 | $self->{on_read} = $cb; |
688 | $self->{on_read} = $cb; |
|
|
689 | $self->_drain_rbuf if $cb && !$self->{_in_drain}; |
525 | } |
690 | } |
526 | |
691 | |
527 | =item $handle->rbuf |
692 | =item $handle->rbuf |
528 | |
693 | |
529 | Returns the read buffer (as a modifiable lvalue). |
694 | Returns the read buffer (as a modifiable lvalue). |
… | |
… | |
577 | |
742 | |
578 | $cb = ($RH{$type} or Carp::croak "unsupported type passed to AnyEvent::Handle::push_read") |
743 | $cb = ($RH{$type} or Carp::croak "unsupported type passed to AnyEvent::Handle::push_read") |
579 | ->($self, $cb, @_); |
744 | ->($self, $cb, @_); |
580 | } |
745 | } |
581 | |
746 | |
582 | push @{ $self->{queue} }, $cb; |
747 | push @{ $self->{_queue} }, $cb; |
583 | $self->_drain_rbuf; |
748 | $self->_drain_rbuf unless $self->{_in_drain}; |
584 | } |
749 | } |
585 | |
750 | |
586 | sub unshift_read { |
751 | sub unshift_read { |
587 | my $self = shift; |
752 | my $self = shift; |
588 | my $cb = pop; |
753 | my $cb = pop; |
… | |
… | |
593 | $cb = ($RH{$type} or Carp::croak "unsupported type passed to AnyEvent::Handle::unshift_read") |
758 | $cb = ($RH{$type} or Carp::croak "unsupported type passed to AnyEvent::Handle::unshift_read") |
594 | ->($self, $cb, @_); |
759 | ->($self, $cb, @_); |
595 | } |
760 | } |
596 | |
761 | |
597 | |
762 | |
598 | unshift @{ $self->{queue} }, $cb; |
763 | unshift @{ $self->{_queue} }, $cb; |
599 | $self->_drain_rbuf; |
764 | $self->_drain_rbuf unless $self->{_in_drain}; |
600 | } |
765 | } |
601 | |
766 | |
602 | =item $handle->push_read (type => @args, $cb) |
767 | =item $handle->push_read (type => @args, $cb) |
603 | |
768 | |
604 | =item $handle->unshift_read (type => @args, $cb) |
769 | =item $handle->unshift_read (type => @args, $cb) |
… | |
… | |
610 | Predefined types are (if you have ideas for additional types, feel free to |
775 | Predefined types are (if you have ideas for additional types, feel free to |
611 | drop by and tell us): |
776 | drop by and tell us): |
612 | |
777 | |
613 | =over 4 |
778 | =over 4 |
614 | |
779 | |
615 | =item chunk => $octets, $cb->($self, $data) |
780 | =item chunk => $octets, $cb->($handle, $data) |
616 | |
781 | |
617 | Invoke the callback only once C<$octets> bytes have been read. Pass the |
782 | Invoke the callback only once C<$octets> bytes have been read. Pass the |
618 | data read to the callback. The callback will never be called with less |
783 | data read to the callback. The callback will never be called with less |
619 | data. |
784 | data. |
620 | |
785 | |
… | |
… | |
643 | |
808 | |
644 | sub unshift_read_chunk { |
809 | sub unshift_read_chunk { |
645 | $_[0]->unshift_read (chunk => $_[1], $_[2]); |
810 | $_[0]->unshift_read (chunk => $_[1], $_[2]); |
646 | } |
811 | } |
647 | |
812 | |
648 | =item line => [$eol, ]$cb->($self, $line, $eol) |
813 | =item line => [$eol, ]$cb->($handle, $line, $eol) |
649 | |
814 | |
650 | The callback will be called only once a full line (including the end of |
815 | The callback will be called only once a full line (including the end of |
651 | line marker, C<$eol>) has been read. This line (excluding the end of line |
816 | line marker, C<$eol>) has been read. This line (excluding the end of line |
652 | marker) will be passed to the callback as second argument (C<$line>), and |
817 | marker) will be passed to the callback as second argument (C<$line>), and |
653 | the end of line marker as the third argument (C<$eol>). |
818 | the end of line marker as the third argument (C<$eol>). |
… | |
… | |
690 | sub unshift_read_line { |
855 | sub unshift_read_line { |
691 | my $self = shift; |
856 | my $self = shift; |
692 | $self->unshift_read (line => @_); |
857 | $self->unshift_read (line => @_); |
693 | } |
858 | } |
694 | |
859 | |
695 | =item netstring => $cb->($string) |
860 | =item netstring => $cb->($handle, $string) |
696 | |
861 | |
697 | A netstring (http://cr.yp.to/proto/netstrings.txt, this is not an endorsement). |
862 | A netstring (http://cr.yp.to/proto/netstrings.txt, this is not an endorsement). |
698 | |
863 | |
699 | Throws an error with C<$!> set to EBADMSG on format violations. |
864 | Throws an error with C<$!> set to EBADMSG on format violations. |
700 | |
865 | |
… | |
… | |
704 | my ($self, $cb) = @_; |
869 | my ($self, $cb) = @_; |
705 | |
870 | |
706 | sub { |
871 | sub { |
707 | unless ($_[0]{rbuf} =~ s/^(0|[1-9][0-9]*)://) { |
872 | unless ($_[0]{rbuf} =~ s/^(0|[1-9][0-9]*)://) { |
708 | if ($_[0]{rbuf} =~ /[^0-9]/) { |
873 | if ($_[0]{rbuf} =~ /[^0-9]/) { |
709 | $! = &Errno::EBADMSG; |
874 | $self->_error (&Errno::EBADMSG); |
710 | $self->error; |
|
|
711 | } |
875 | } |
712 | return; |
876 | return; |
713 | } |
877 | } |
714 | |
878 | |
715 | my $len = $1; |
879 | my $len = $1; |
… | |
… | |
718 | my $string = $_[1]; |
882 | my $string = $_[1]; |
719 | $_[0]->unshift_read (chunk => 1, sub { |
883 | $_[0]->unshift_read (chunk => 1, sub { |
720 | if ($_[1] eq ",") { |
884 | if ($_[1] eq ",") { |
721 | $cb->($_[0], $string); |
885 | $cb->($_[0], $string); |
722 | } else { |
886 | } else { |
723 | $! = &Errno::EBADMSG; |
887 | $self->_error (&Errno::EBADMSG); |
724 | $self->error; |
|
|
725 | } |
888 | } |
726 | }); |
889 | }); |
727 | }); |
890 | }); |
728 | |
891 | |
729 | 1 |
892 | 1 |
730 | } |
893 | } |
731 | }; |
894 | }; |
732 | |
895 | |
|
|
896 | =item regex => $accept[, $reject[, $skip], $cb->($handle, $data) |
|
|
897 | |
|
|
898 | Makes a regex match against the regex object C<$accept> and returns |
|
|
899 | everything up to and including the match. |
|
|
900 | |
|
|
901 | Example: read a single line terminated by '\n'. |
|
|
902 | |
|
|
903 | $handle->push_read (regex => qr<\n>, sub { ... }); |
|
|
904 | |
|
|
905 | If C<$reject> is given and not undef, then it determines when the data is |
|
|
906 | to be rejected: it is matched against the data when the C<$accept> regex |
|
|
907 | does not match and generates an C<EBADMSG> error when it matches. This is |
|
|
908 | useful to quickly reject wrong data (to avoid waiting for a timeout or a |
|
|
909 | receive buffer overflow). |
|
|
910 | |
|
|
911 | Example: expect a single decimal number followed by whitespace, reject |
|
|
912 | anything else (not the use of an anchor). |
|
|
913 | |
|
|
914 | $handle->push_read (regex => qr<^[0-9]+\s>, qr<[^0-9]>, sub { ... }); |
|
|
915 | |
|
|
916 | If C<$skip> is given and not C<undef>, then it will be matched against |
|
|
917 | the receive buffer when neither C<$accept> nor C<$reject> match, |
|
|
918 | and everything preceding and including the match will be accepted |
|
|
919 | unconditionally. This is useful to skip large amounts of data that you |
|
|
920 | know cannot be matched, so that the C<$accept> or C<$reject> regex do not |
|
|
921 | have to start matching from the beginning. This is purely an optimisation |
|
|
922 | and is usually worth only when you expect more than a few kilobytes. |
|
|
923 | |
|
|
924 | Example: expect a http header, which ends at C<\015\012\015\012>. Since we |
|
|
925 | expect the header to be very large (it isn't in practise, but...), we use |
|
|
926 | a skip regex to skip initial portions. The skip regex is tricky in that |
|
|
927 | it only accepts something not ending in either \015 or \012, as these are |
|
|
928 | required for the accept regex. |
|
|
929 | |
|
|
930 | $handle->push_read (regex => |
|
|
931 | qr<\015\012\015\012>, |
|
|
932 | undef, # no reject |
|
|
933 | qr<^.*[^\015\012]>, |
|
|
934 | sub { ... }); |
|
|
935 | |
|
|
936 | =cut |
|
|
937 | |
|
|
938 | register_read_type regex => sub { |
|
|
939 | my ($self, $cb, $accept, $reject, $skip) = @_; |
|
|
940 | |
|
|
941 | my $data; |
|
|
942 | my $rbuf = \$self->{rbuf}; |
|
|
943 | |
|
|
944 | sub { |
|
|
945 | # accept |
|
|
946 | if ($$rbuf =~ $accept) { |
|
|
947 | $data .= substr $$rbuf, 0, $+[0], ""; |
|
|
948 | $cb->($self, $data); |
|
|
949 | return 1; |
|
|
950 | } |
|
|
951 | |
|
|
952 | # reject |
|
|
953 | if ($reject && $$rbuf =~ $reject) { |
|
|
954 | $self->_error (&Errno::EBADMSG); |
|
|
955 | } |
|
|
956 | |
|
|
957 | # skip |
|
|
958 | if ($skip && $$rbuf =~ $skip) { |
|
|
959 | $data .= substr $$rbuf, 0, $+[0], ""; |
|
|
960 | } |
|
|
961 | |
|
|
962 | () |
|
|
963 | } |
|
|
964 | }; |
|
|
965 | |
|
|
966 | =item json => $cb->($handle, $hash_or_arrayref) |
|
|
967 | |
|
|
968 | Reads a JSON object or array, decodes it and passes it to the callback. |
|
|
969 | |
|
|
970 | If a C<json> object was passed to the constructor, then that will be used |
|
|
971 | for the final decode, otherwise it will create a JSON coder expecting UTF-8. |
|
|
972 | |
|
|
973 | This read type uses the incremental parser available with JSON version |
|
|
974 | 2.09 (and JSON::XS version 2.2) and above. You have to provide a |
|
|
975 | dependency on your own: this module will load the JSON module, but |
|
|
976 | AnyEvent does not depend on it itself. |
|
|
977 | |
|
|
978 | Since JSON texts are fully self-delimiting, the C<json> read and write |
|
|
979 | types are an ideal simple RPC protocol: just exchange JSON datagrams. See |
|
|
980 | the C<json> write type description, above, for an actual example. |
|
|
981 | |
|
|
982 | =cut |
|
|
983 | |
|
|
984 | register_read_type json => sub { |
|
|
985 | my ($self, $cb, $accept, $reject, $skip) = @_; |
|
|
986 | |
|
|
987 | require JSON; |
|
|
988 | |
|
|
989 | my $data; |
|
|
990 | my $rbuf = \$self->{rbuf}; |
|
|
991 | |
|
|
992 | my $json = $self->{json} ||= JSON->new->utf8; |
|
|
993 | |
|
|
994 | sub { |
|
|
995 | my $ref = $json->incr_parse ($self->{rbuf}); |
|
|
996 | |
|
|
997 | if ($ref) { |
|
|
998 | $self->{rbuf} = $json->incr_text; |
|
|
999 | $json->incr_text = ""; |
|
|
1000 | $cb->($self, $ref); |
|
|
1001 | |
|
|
1002 | 1 |
|
|
1003 | } else { |
|
|
1004 | $self->{rbuf} = ""; |
|
|
1005 | () |
|
|
1006 | } |
|
|
1007 | } |
|
|
1008 | }; |
|
|
1009 | |
733 | =back |
1010 | =back |
734 | |
1011 | |
735 | =item AnyEvent::Handle::register_read_type type => $coderef->($self, $cb, @args) |
1012 | =item AnyEvent::Handle::register_read_type type => $coderef->($handle, $cb, @args) |
736 | |
1013 | |
737 | This function (not method) lets you add your own types to C<push_read>. |
1014 | This function (not method) lets you add your own types to C<push_read>. |
738 | |
1015 | |
739 | Whenever the given C<type> is used, C<push_read> will invoke the code |
1016 | Whenever the given C<type> is used, C<push_read> will invoke the code |
740 | reference with the handle object, the callback and the remaining |
1017 | reference with the handle object, the callback and the remaining |
… | |
… | |
742 | |
1019 | |
743 | The code reference is supposed to return a callback (usually a closure) |
1020 | The code reference is supposed to return a callback (usually a closure) |
744 | that works as a plain read callback (see C<< ->push_read ($cb) >>). |
1021 | that works as a plain read callback (see C<< ->push_read ($cb) >>). |
745 | |
1022 | |
746 | It should invoke the passed callback when it is done reading (remember to |
1023 | It should invoke the passed callback when it is done reading (remember to |
747 | pass C<$self> as first argument as all other callbacks do that). |
1024 | pass C<$handle> as first argument as all other callbacks do that). |
748 | |
1025 | |
749 | Note that this is a function, and all types registered this way will be |
1026 | Note that this is a function, and all types registered this way will be |
750 | global, so try to use unique names. |
1027 | global, so try to use unique names. |
751 | |
1028 | |
752 | For examples, see the source of this module (F<perldoc -m AnyEvent::Handle>, |
1029 | For examples, see the source of this module (F<perldoc -m AnyEvent::Handle>, |
… | |
… | |
755 | =item $handle->stop_read |
1032 | =item $handle->stop_read |
756 | |
1033 | |
757 | =item $handle->start_read |
1034 | =item $handle->start_read |
758 | |
1035 | |
759 | In rare cases you actually do not want to read anything from the |
1036 | In rare cases you actually do not want to read anything from the |
760 | socket. In this case you can call C<stop_read>. Neither C<on_read> no |
1037 | socket. In this case you can call C<stop_read>. Neither C<on_read> nor |
761 | any queued callbacks will be executed then. To start reading again, call |
1038 | any queued callbacks will be executed then. To start reading again, call |
762 | C<start_read>. |
1039 | C<start_read>. |
763 | |
1040 | |
|
|
1041 | Note that AnyEvent::Handle will automatically C<start_read> for you when |
|
|
1042 | you change the C<on_read> callback or push/unshift a read callback, and it |
|
|
1043 | will automatically C<stop_read> for you when neither C<on_read> is set nor |
|
|
1044 | there are any read requests in the queue. |
|
|
1045 | |
764 | =cut |
1046 | =cut |
765 | |
1047 | |
766 | sub stop_read { |
1048 | sub stop_read { |
767 | my ($self) = @_; |
1049 | my ($self) = @_; |
768 | |
1050 | |
769 | delete $self->{rw}; |
1051 | delete $self->{_rw}; |
770 | } |
1052 | } |
771 | |
1053 | |
772 | sub start_read { |
1054 | sub start_read { |
773 | my ($self) = @_; |
1055 | my ($self) = @_; |
774 | |
1056 | |
775 | unless ($self->{rw} || $self->{eof}) { |
1057 | unless ($self->{_rw} || $self->{_eof}) { |
776 | Scalar::Util::weaken $self; |
1058 | Scalar::Util::weaken $self; |
777 | |
1059 | |
778 | $self->{rw} = AnyEvent->io (fh => $self->{fh}, poll => "r", cb => sub { |
1060 | $self->{_rw} = AnyEvent->io (fh => $self->{fh}, poll => "r", cb => sub { |
779 | my $rbuf = $self->{filter_r} ? \my $buf : \$self->{rbuf}; |
1061 | my $rbuf = $self->{filter_r} ? \my $buf : \$self->{rbuf}; |
780 | my $len = sysread $self->{fh}, $$rbuf, $self->{read_size} || 8192, length $$rbuf; |
1062 | my $len = sysread $self->{fh}, $$rbuf, $self->{read_size} || 8192, length $$rbuf; |
781 | |
1063 | |
782 | if ($len > 0) { |
1064 | if ($len > 0) { |
|
|
1065 | $self->{_activity} = AnyEvent->now; |
|
|
1066 | |
783 | $self->{filter_r} |
1067 | $self->{filter_r} |
784 | ? $self->{filter_r}->($self, $rbuf) |
1068 | ? $self->{filter_r}($self, $rbuf) |
785 | : $self->_drain_rbuf; |
1069 | : $self->{_in_drain} || $self->_drain_rbuf; |
786 | |
1070 | |
787 | } elsif (defined $len) { |
1071 | } elsif (defined $len) { |
788 | delete $self->{rw}; |
1072 | delete $self->{_rw}; |
789 | $self->{eof} = 1; |
1073 | $self->{_eof} = 1; |
790 | $self->_drain_rbuf; |
1074 | $self->_drain_rbuf unless $self->{_in_drain}; |
791 | |
1075 | |
792 | } elsif ($! != EAGAIN && $! != EINTR && $! != &AnyEvent::Util::WSAWOULDBLOCK) { |
1076 | } elsif ($! != EAGAIN && $! != EINTR && $! != WSAEWOULDBLOCK) { |
793 | return $self->error; |
1077 | return $self->_error ($!, 1); |
794 | } |
1078 | } |
795 | }); |
1079 | }); |
796 | } |
1080 | } |
797 | } |
1081 | } |
798 | |
1082 | |
799 | sub _dotls { |
1083 | sub _dotls { |
800 | my ($self) = @_; |
1084 | my ($self) = @_; |
801 | |
1085 | |
|
|
1086 | my $buf; |
|
|
1087 | |
802 | if (length $self->{tls_wbuf}) { |
1088 | if (length $self->{_tls_wbuf}) { |
803 | while ((my $len = Net::SSLeay::write ($self->{tls}, $self->{tls_wbuf})) > 0) { |
1089 | while ((my $len = Net::SSLeay::write ($self->{tls}, $self->{_tls_wbuf})) > 0) { |
804 | substr $self->{tls_wbuf}, 0, $len, ""; |
1090 | substr $self->{_tls_wbuf}, 0, $len, ""; |
805 | } |
1091 | } |
806 | } |
1092 | } |
807 | |
1093 | |
808 | if (defined (my $buf = Net::SSLeay::BIO_read ($self->{tls_wbio}))) { |
1094 | if (length ($buf = Net::SSLeay::BIO_read ($self->{_wbio}))) { |
809 | $self->{wbuf} .= $buf; |
1095 | $self->{wbuf} .= $buf; |
810 | $self->_drain_wbuf; |
1096 | $self->_drain_wbuf; |
811 | } |
1097 | } |
812 | |
1098 | |
813 | while (defined (my $buf = Net::SSLeay::read ($self->{tls}))) { |
1099 | while (defined ($buf = Net::SSLeay::read ($self->{tls}))) { |
|
|
1100 | if (length $buf) { |
814 | $self->{rbuf} .= $buf; |
1101 | $self->{rbuf} .= $buf; |
815 | $self->_drain_rbuf; |
1102 | $self->_drain_rbuf unless $self->{_in_drain}; |
|
|
1103 | } else { |
|
|
1104 | # let's treat SSL-eof as we treat normal EOF |
|
|
1105 | $self->{_eof} = 1; |
|
|
1106 | $self->_shutdown; |
|
|
1107 | return; |
|
|
1108 | } |
816 | } |
1109 | } |
817 | |
1110 | |
818 | my $err = Net::SSLeay::get_error ($self->{tls}, -1); |
1111 | my $err = Net::SSLeay::get_error ($self->{tls}, -1); |
819 | |
1112 | |
820 | if ($err!= Net::SSLeay::ERROR_WANT_READ ()) { |
1113 | if ($err!= Net::SSLeay::ERROR_WANT_READ ()) { |
821 | if ($err == Net::SSLeay::ERROR_SYSCALL ()) { |
1114 | if ($err == Net::SSLeay::ERROR_SYSCALL ()) { |
822 | $self->error; |
1115 | return $self->_error ($!, 1); |
823 | } elsif ($err == Net::SSLeay::ERROR_SSL ()) { |
1116 | } elsif ($err == Net::SSLeay::ERROR_SSL ()) { |
824 | $! = &Errno::EIO; |
1117 | return $self->_error (&Errno::EIO, 1); |
825 | $self->error; |
|
|
826 | } |
1118 | } |
827 | |
1119 | |
828 | # all others are fine for our purposes |
1120 | # all others are fine for our purposes |
829 | } |
1121 | } |
830 | } |
1122 | } |
… | |
… | |
839 | C<"connect">, C<"accept"> or an existing Net::SSLeay object). |
1131 | C<"connect">, C<"accept"> or an existing Net::SSLeay object). |
840 | |
1132 | |
841 | The second argument is the optional C<Net::SSLeay::CTX> object that is |
1133 | The second argument is the optional C<Net::SSLeay::CTX> object that is |
842 | used when AnyEvent::Handle has to create its own TLS connection object. |
1134 | used when AnyEvent::Handle has to create its own TLS connection object. |
843 | |
1135 | |
844 | =cut |
1136 | The TLS connection object will end up in C<< $handle->{tls} >> after this |
|
|
1137 | call and can be used or changed to your liking. Note that the handshake |
|
|
1138 | might have already started when this function returns. |
845 | |
1139 | |
846 | # TODO: maybe document... |
1140 | =cut |
|
|
1141 | |
847 | sub starttls { |
1142 | sub starttls { |
848 | my ($self, $ssl, $ctx) = @_; |
1143 | my ($self, $ssl, $ctx) = @_; |
849 | |
1144 | |
850 | $self->stoptls; |
1145 | $self->stoptls; |
851 | |
1146 | |
… | |
… | |
866 | # http://www.mail-archive.com/openssl-dev@openssl.org/msg22420.html |
1161 | # http://www.mail-archive.com/openssl-dev@openssl.org/msg22420.html |
867 | Net::SSLeay::CTX_set_mode ($self->{tls}, |
1162 | Net::SSLeay::CTX_set_mode ($self->{tls}, |
868 | (eval { local $SIG{__DIE__}; Net::SSLeay::MODE_ENABLE_PARTIAL_WRITE () } || 1) |
1163 | (eval { local $SIG{__DIE__}; Net::SSLeay::MODE_ENABLE_PARTIAL_WRITE () } || 1) |
869 | | (eval { local $SIG{__DIE__}; Net::SSLeay::MODE_ACCEPT_MOVING_WRITE_BUFFER () } || 2)); |
1164 | | (eval { local $SIG{__DIE__}; Net::SSLeay::MODE_ACCEPT_MOVING_WRITE_BUFFER () } || 2)); |
870 | |
1165 | |
871 | $self->{tls_rbio} = Net::SSLeay::BIO_new (Net::SSLeay::BIO_s_mem ()); |
1166 | $self->{_rbio} = Net::SSLeay::BIO_new (Net::SSLeay::BIO_s_mem ()); |
872 | $self->{tls_wbio} = Net::SSLeay::BIO_new (Net::SSLeay::BIO_s_mem ()); |
1167 | $self->{_wbio} = Net::SSLeay::BIO_new (Net::SSLeay::BIO_s_mem ()); |
873 | |
1168 | |
874 | Net::SSLeay::set_bio ($ssl, $self->{tls_rbio}, $self->{tls_wbio}); |
1169 | Net::SSLeay::set_bio ($ssl, $self->{_rbio}, $self->{_wbio}); |
875 | |
1170 | |
876 | $self->{filter_w} = sub { |
1171 | $self->{filter_w} = sub { |
877 | $_[0]{tls_wbuf} .= ${$_[1]}; |
1172 | $_[0]{_tls_wbuf} .= ${$_[1]}; |
878 | &_dotls; |
1173 | &_dotls; |
879 | }; |
1174 | }; |
880 | $self->{filter_r} = sub { |
1175 | $self->{filter_r} = sub { |
881 | Net::SSLeay::BIO_write ($_[0]{tls_rbio}, ${$_[1]}); |
1176 | Net::SSLeay::BIO_write ($_[0]{_rbio}, ${$_[1]}); |
882 | &_dotls; |
1177 | &_dotls; |
883 | }; |
1178 | }; |
884 | } |
1179 | } |
885 | |
1180 | |
886 | =item $handle->stoptls |
1181 | =item $handle->stoptls |
… | |
… | |
892 | |
1187 | |
893 | sub stoptls { |
1188 | sub stoptls { |
894 | my ($self) = @_; |
1189 | my ($self) = @_; |
895 | |
1190 | |
896 | Net::SSLeay::free (delete $self->{tls}) if $self->{tls}; |
1191 | Net::SSLeay::free (delete $self->{tls}) if $self->{tls}; |
|
|
1192 | |
897 | delete $self->{tls_rbio}; |
1193 | delete $self->{_rbio}; |
898 | delete $self->{tls_wbio}; |
1194 | delete $self->{_wbio}; |
899 | delete $self->{tls_wbuf}; |
1195 | delete $self->{_tls_wbuf}; |
900 | delete $self->{filter_r}; |
1196 | delete $self->{filter_r}; |
901 | delete $self->{filter_w}; |
1197 | delete $self->{filter_w}; |
902 | } |
1198 | } |
903 | |
1199 | |
904 | sub DESTROY { |
1200 | sub DESTROY { |
… | |
… | |
942 | } |
1238 | } |
943 | } |
1239 | } |
944 | |
1240 | |
945 | =back |
1241 | =back |
946 | |
1242 | |
|
|
1243 | =head1 SUBCLASSING AnyEvent::Handle |
|
|
1244 | |
|
|
1245 | In many cases, you might want to subclass AnyEvent::Handle. |
|
|
1246 | |
|
|
1247 | To make this easier, a given version of AnyEvent::Handle uses these |
|
|
1248 | conventions: |
|
|
1249 | |
|
|
1250 | =over 4 |
|
|
1251 | |
|
|
1252 | =item * all constructor arguments become object members. |
|
|
1253 | |
|
|
1254 | At least initially, when you pass a C<tls>-argument to the constructor it |
|
|
1255 | will end up in C<< $handle->{tls} >>. Those members might be changes or |
|
|
1256 | mutated later on (for example C<tls> will hold the TLS connection object). |
|
|
1257 | |
|
|
1258 | =item * other object member names are prefixed with an C<_>. |
|
|
1259 | |
|
|
1260 | All object members not explicitly documented (internal use) are prefixed |
|
|
1261 | with an underscore character, so the remaining non-C<_>-namespace is free |
|
|
1262 | for use for subclasses. |
|
|
1263 | |
|
|
1264 | =item * all members not documented here and not prefixed with an underscore |
|
|
1265 | are free to use in subclasses. |
|
|
1266 | |
|
|
1267 | Of course, new versions of AnyEvent::Handle may introduce more "public" |
|
|
1268 | member variables, but thats just life, at least it is documented. |
|
|
1269 | |
|
|
1270 | =back |
|
|
1271 | |
947 | =head1 AUTHOR |
1272 | =head1 AUTHOR |
948 | |
1273 | |
949 | Robin Redeker C<< <elmex at ta-sa.org> >>, Marc Lehmann <schmorp@schmorp.de>. |
1274 | Robin Redeker C<< <elmex at ta-sa.org> >>, Marc Lehmann <schmorp@schmorp.de>. |
950 | |
1275 | |
951 | =cut |
1276 | =cut |