1 | package AnyEvent::Handle; |
|
|
2 | |
|
|
3 | use Scalar::Util (); |
|
|
4 | use Carp (); |
|
|
5 | use Errno qw(EAGAIN EINTR); |
|
|
6 | |
|
|
7 | use AnyEvent (); BEGIN { AnyEvent::common_sense } |
|
|
8 | use AnyEvent::Util qw(WSAEWOULDBLOCK); |
|
|
9 | |
|
|
10 | =head1 NAME |
1 | =head1 NAME |
11 | |
2 | |
12 | AnyEvent::Handle - non-blocking I/O on file handles via AnyEvent |
3 | AnyEvent::Handle - non-blocking I/O on streaming handles via AnyEvent |
13 | |
|
|
14 | =cut |
|
|
15 | |
|
|
16 | our $VERSION = 4.87; |
|
|
17 | |
4 | |
18 | =head1 SYNOPSIS |
5 | =head1 SYNOPSIS |
19 | |
6 | |
20 | use AnyEvent; |
7 | use AnyEvent; |
21 | use AnyEvent::Handle; |
8 | use AnyEvent::Handle; |
… | |
… | |
27 | on_error => sub { |
14 | on_error => sub { |
28 | my ($hdl, $fatal, $msg) = @_; |
15 | my ($hdl, $fatal, $msg) = @_; |
29 | warn "got error $msg\n"; |
16 | warn "got error $msg\n"; |
30 | $hdl->destroy; |
17 | $hdl->destroy; |
31 | $cv->send; |
18 | $cv->send; |
32 | ); |
19 | }; |
33 | |
20 | |
34 | # send some request line |
21 | # send some request line |
35 | $hdl->push_write ("getinfo\015\012"); |
22 | $hdl->push_write ("getinfo\015\012"); |
36 | |
23 | |
37 | # read the response line |
24 | # read the response line |
… | |
… | |
44 | $cv->recv; |
31 | $cv->recv; |
45 | |
32 | |
46 | =head1 DESCRIPTION |
33 | =head1 DESCRIPTION |
47 | |
34 | |
48 | This module is a helper module to make it easier to do event-based I/O on |
35 | This module is a helper module to make it easier to do event-based I/O on |
49 | filehandles. |
36 | stream-based filehandles (sockets, pipes or other stream things). |
50 | |
37 | |
51 | The L<AnyEvent::Intro> tutorial contains some well-documented |
38 | The L<AnyEvent::Intro> tutorial contains some well-documented |
52 | AnyEvent::Handle examples. |
39 | AnyEvent::Handle examples. |
53 | |
40 | |
54 | In the following, when the documentation refers to of "bytes" then this |
41 | In the following, when the documentation refers to of "bytes" then this |
… | |
… | |
59 | C<on_error> callback. |
46 | C<on_error> callback. |
60 | |
47 | |
61 | All callbacks will be invoked with the handle object as their first |
48 | All callbacks will be invoked with the handle object as their first |
62 | argument. |
49 | argument. |
63 | |
50 | |
|
|
51 | =cut |
|
|
52 | |
|
|
53 | package AnyEvent::Handle; |
|
|
54 | |
|
|
55 | use Scalar::Util (); |
|
|
56 | use List::Util (); |
|
|
57 | use Carp (); |
|
|
58 | use Errno qw(EAGAIN EINTR); |
|
|
59 | |
|
|
60 | use AnyEvent (); BEGIN { AnyEvent::common_sense } |
|
|
61 | use AnyEvent::Util qw(WSAEWOULDBLOCK); |
|
|
62 | |
|
|
63 | our $VERSION = $AnyEvent::VERSION; |
|
|
64 | |
|
|
65 | sub _load_func($) { |
|
|
66 | my $func = $_[0]; |
|
|
67 | |
|
|
68 | unless (defined &$func) { |
|
|
69 | my $pkg = $func; |
|
|
70 | do { |
|
|
71 | $pkg =~ s/::[^:]+$// |
|
|
72 | or return; |
|
|
73 | eval "require $pkg"; |
|
|
74 | } until defined &$func; |
|
|
75 | } |
|
|
76 | |
|
|
77 | \&$func |
|
|
78 | } |
|
|
79 | |
64 | =head1 METHODS |
80 | =head1 METHODS |
65 | |
81 | |
66 | =over 4 |
82 | =over 4 |
67 | |
83 | |
68 | =item $handle = B<new> AnyEvent::TLS fh => $filehandle, key => value... |
84 | =item $handle = B<new> AnyEvent::Handle fh => $filehandle, key => value... |
69 | |
85 | |
70 | The constructor supports these arguments (all as C<< key => value >> pairs). |
86 | The constructor supports these arguments (all as C<< key => value >> pairs). |
71 | |
87 | |
72 | =over 4 |
88 | =over 4 |
73 | |
89 | |
… | |
… | |
113 | |
129 | |
114 | The actual numeric host and port (the socket peername) are passed as |
130 | The actual numeric host and port (the socket peername) are passed as |
115 | parameters, together with a retry callback. |
131 | parameters, together with a retry callback. |
116 | |
132 | |
117 | When, for some reason, the handle is not acceptable, then calling |
133 | When, for some reason, the handle is not acceptable, then calling |
118 | C<$retry> will continue with the next conenction target (in case of |
134 | C<$retry> will continue with the next connection target (in case of |
119 | multi-homed hosts or SRV records there can be multiple connection |
135 | multi-homed hosts or SRV records there can be multiple connection |
120 | endpoints). When it is called then the read and write queues, eof status, |
136 | endpoints). At the time it is called the read and write queues, eof |
121 | tls status and similar properties of the handle are being reset. |
137 | status, tls status and similar properties of the handle will have been |
|
|
138 | reset. |
122 | |
139 | |
123 | In most cases, ignoring the C<$retry> parameter is the way to go. |
140 | In most cases, ignoring the C<$retry> parameter is the way to go. |
124 | |
141 | |
125 | =item on_connect_error => $cb->($handle, $message) |
142 | =item on_connect_error => $cb->($handle, $message) |
126 | |
143 | |
127 | This callback is called when the conenction could not be |
144 | This callback is called when the connection could not be |
128 | established. C<$!> will contain the relevant error code, and C<$message> a |
145 | established. C<$!> will contain the relevant error code, and C<$message> a |
129 | message describing it (usually the same as C<"$!">). |
146 | message describing it (usually the same as C<"$!">). |
130 | |
147 | |
131 | If this callback isn't specified, then C<on_error> will be called with a |
148 | If this callback isn't specified, then C<on_error> will be called with a |
132 | fatal error instead. |
149 | fatal error instead. |
… | |
… | |
216 | memory and push it into the queue, but instead only read more data from |
233 | memory and push it into the queue, but instead only read more data from |
217 | the file when the write queue becomes empty. |
234 | the file when the write queue becomes empty. |
218 | |
235 | |
219 | =item timeout => $fractional_seconds |
236 | =item timeout => $fractional_seconds |
220 | |
237 | |
|
|
238 | =item rtimeout => $fractional_seconds |
|
|
239 | |
|
|
240 | =item wtimeout => $fractional_seconds |
|
|
241 | |
221 | If non-zero, then this enables an "inactivity" timeout: whenever this many |
242 | If non-zero, then these enables an "inactivity" timeout: whenever this |
222 | seconds pass without a successful read or write on the underlying file |
243 | many seconds pass without a successful read or write on the underlying |
223 | handle, the C<on_timeout> callback will be invoked (and if that one is |
244 | file handle (or a call to C<timeout_reset>), the C<on_timeout> callback |
224 | missing, a non-fatal C<ETIMEDOUT> error will be raised). |
245 | will be invoked (and if that one is missing, a non-fatal C<ETIMEDOUT> |
|
|
246 | error will be raised). |
|
|
247 | |
|
|
248 | There are three variants of the timeouts that work fully independent |
|
|
249 | of each other, for both read and write, just read, and just write: |
|
|
250 | C<timeout>, C<rtimeout> and C<wtimeout>, with corresponding callbacks |
|
|
251 | C<on_timeout>, C<on_rtimeout> and C<on_wtimeout>, and reset functions |
|
|
252 | C<timeout_reset>, C<rtimeout_reset>, and C<wtimeout_reset>. |
225 | |
253 | |
226 | Note that timeout processing is also active when you currently do not have |
254 | Note that timeout processing is also active when you currently do not have |
227 | any outstanding read or write requests: If you plan to keep the connection |
255 | any outstanding read or write requests: If you plan to keep the connection |
228 | idle then you should disable the timout temporarily or ignore the timeout |
256 | idle then you should disable the timout temporarily or ignore the timeout |
229 | in the C<on_timeout> callback, in which case AnyEvent::Handle will simply |
257 | in the C<on_timeout> callback, in which case AnyEvent::Handle will simply |
… | |
… | |
273 | accomplishd by setting this option to a true value. |
301 | accomplishd by setting this option to a true value. |
274 | |
302 | |
275 | The default is your opertaing system's default behaviour (most likely |
303 | The default is your opertaing system's default behaviour (most likely |
276 | enabled), this option explicitly enables or disables it, if possible. |
304 | enabled), this option explicitly enables or disables it, if possible. |
277 | |
305 | |
|
|
306 | =item keepalive => <boolean> |
|
|
307 | |
|
|
308 | Enables (default disable) the SO_KEEPALIVE option on the stream socket: |
|
|
309 | normally, TCP connections have no time-out once established, so TCP |
|
|
310 | connections, once established, can stay alive forever even when the other |
|
|
311 | side has long gone. TCP keepalives are a cheap way to take down long-lived |
|
|
312 | TCP connections whent he other side becomes unreachable. While the default |
|
|
313 | is OS-dependent, TCP keepalives usually kick in after around two hours, |
|
|
314 | and, if the other side doesn't reply, take down the TCP connection some 10 |
|
|
315 | to 15 minutes later. |
|
|
316 | |
|
|
317 | It is harmless to specify this option for file handles that do not support |
|
|
318 | keepalives, and enabling it on connections that are potentially long-lived |
|
|
319 | is usually a good idea. |
|
|
320 | |
|
|
321 | =item oobinline => <boolean> |
|
|
322 | |
|
|
323 | BSD majorly fucked up the implementation of TCP urgent data. The result |
|
|
324 | is that almost no OS implements TCP according to the specs, and every OS |
|
|
325 | implements it slightly differently. |
|
|
326 | |
|
|
327 | If you want to handle TCP urgent data, then setting this flag (the default |
|
|
328 | is enabled) gives you the most portable way of getting urgent data, by |
|
|
329 | putting it into the stream. |
|
|
330 | |
|
|
331 | Since BSD emulation of OOB data on top of TCP's urgent data can have |
|
|
332 | security implications, AnyEvent::Handle sets this flag automatically |
|
|
333 | unless explicitly specified. Note that setting this flag after |
|
|
334 | establishing a connection I<may> be a bit too late (data loss could |
|
|
335 | already have occured on BSD systems), but at least it will protect you |
|
|
336 | from most attacks. |
|
|
337 | |
278 | =item read_size => <bytes> |
338 | =item read_size => <bytes> |
279 | |
339 | |
280 | The default read block size (the amount of bytes this module will |
340 | The default read block size (the amount of bytes this module will |
281 | try to read during each loop iteration, which affects memory |
341 | try to read during each loop iteration, which affects memory |
282 | requirements). Default: C<8192>. |
342 | requirements). Default: C<8192>. |
… | |
… | |
315 | C<undef>. |
375 | C<undef>. |
316 | |
376 | |
317 | =item tls => "accept" | "connect" | Net::SSLeay::SSL object |
377 | =item tls => "accept" | "connect" | Net::SSLeay::SSL object |
318 | |
378 | |
319 | When this parameter is given, it enables TLS (SSL) mode, that means |
379 | When this parameter is given, it enables TLS (SSL) mode, that means |
320 | AnyEvent will start a TLS handshake as soon as the conenction has been |
380 | AnyEvent will start a TLS handshake as soon as the connection has been |
321 | established and will transparently encrypt/decrypt data afterwards. |
381 | established and will transparently encrypt/decrypt data afterwards. |
322 | |
382 | |
323 | All TLS protocol errors will be signalled as C<EPROTO>, with an |
383 | All TLS protocol errors will be signalled as C<EPROTO>, with an |
324 | appropriate error message. |
384 | appropriate error message. |
325 | |
385 | |
… | |
… | |
438 | delete $self->{_skip_drain_rbuf}; |
498 | delete $self->{_skip_drain_rbuf}; |
439 | $self->_start; |
499 | $self->_start; |
440 | |
500 | |
441 | $self->{on_connect} |
501 | $self->{on_connect} |
442 | and $self->{on_connect}($self, $host, $port, sub { |
502 | and $self->{on_connect}($self, $host, $port, sub { |
443 | delete @$self{qw(fh _tw _ww _rw _eof _queue rbuf _wbuf tls _tls_rbuf _tls_wbuf)}; |
503 | delete @$self{qw(fh _tw _rtw _wtw _ww _rw _eof _queue rbuf _wbuf tls _tls_rbuf _tls_wbuf)}; |
444 | $self->{_skip_drain_rbuf} = 1; |
504 | $self->{_skip_drain_rbuf} = 1; |
445 | &$retry; |
505 | &$retry; |
446 | }); |
506 | }); |
447 | |
507 | |
448 | } else { |
508 | } else { |
… | |
… | |
472 | } |
532 | } |
473 | |
533 | |
474 | sub _start { |
534 | sub _start { |
475 | my ($self) = @_; |
535 | my ($self) = @_; |
476 | |
536 | |
|
|
537 | # too many clueless people try to use udp and similar sockets |
|
|
538 | # with AnyEvent::Handle, do them a favour. |
|
|
539 | my $type = getsockopt $self->{fh}, Socket::SOL_SOCKET (), Socket::SO_TYPE (); |
|
|
540 | Carp::croak "AnyEvent::Handle: only stream sockets supported, anything else will NOT work!" |
|
|
541 | if Socket::SOCK_STREAM != (unpack "I", $type) && defined $type; |
|
|
542 | |
477 | AnyEvent::Util::fh_nonblocking $self->{fh}, 1; |
543 | AnyEvent::Util::fh_nonblocking $self->{fh}, 1; |
478 | |
544 | |
|
|
545 | $self->{_activity} = |
|
|
546 | $self->{_ractivity} = |
479 | $self->{_activity} = AnyEvent->now; |
547 | $self->{_wactivity} = AE::now; |
480 | $self->_timeout; |
|
|
481 | |
548 | |
|
|
549 | $self->timeout (delete $self->{timeout} ) if $self->{timeout}; |
|
|
550 | $self->rtimeout (delete $self->{rtimeout} ) if $self->{rtimeout}; |
|
|
551 | $self->wtimeout (delete $self->{wtimeout} ) if $self->{wtimeout}; |
|
|
552 | |
482 | $self->no_delay (delete $self->{no_delay}) if exists $self->{no_delay}; |
553 | $self->no_delay (delete $self->{no_delay} ) if exists $self->{no_delay} && $self->{no_delay}; |
|
|
554 | $self->keepalive (delete $self->{keepalive}) if exists $self->{keepalive} && $self->{keepalive}; |
483 | |
555 | |
|
|
556 | $self->oobinline (exists $self->{oobinline} ? delete $self->{oobinline} : 1); |
|
|
557 | |
484 | $self->starttls (delete $self->{tls}, delete $self->{tls_ctx}) |
558 | $self->starttls (delete $self->{tls}, delete $self->{tls_ctx}) |
485 | if $self->{tls}; |
559 | if $self->{tls}; |
486 | |
560 | |
487 | $self->on_drain (delete $self->{on_drain}) if $self->{on_drain}; |
561 | $self->on_drain (delete $self->{on_drain}) if $self->{on_drain}; |
488 | |
562 | |
489 | $self->start_read |
563 | $self->start_read |
490 | if $self->{on_read} || @{ $self->{_queue} }; |
564 | if $self->{on_read} || @{ $self->{_queue} }; |
491 | |
565 | |
492 | $self->_drain_wbuf; |
566 | $self->_drain_wbuf; |
493 | } |
567 | } |
494 | |
|
|
495 | #sub _shutdown { |
|
|
496 | # my ($self) = @_; |
|
|
497 | # |
|
|
498 | # delete @$self{qw(_tw _rw _ww fh wbuf on_read _queue)}; |
|
|
499 | # $self->{_eof} = 1; # tell starttls et. al to stop trying |
|
|
500 | # |
|
|
501 | # &_freetls; |
|
|
502 | #} |
|
|
503 | |
568 | |
504 | sub _error { |
569 | sub _error { |
505 | my ($self, $errno, $fatal, $message) = @_; |
570 | my ($self, $errno, $fatal, $message) = @_; |
506 | |
571 | |
507 | $! = $errno; |
572 | $! = $errno; |
508 | $message ||= "$!"; |
573 | $message ||= "$!"; |
509 | |
574 | |
510 | if ($self->{on_error}) { |
575 | if ($self->{on_error}) { |
511 | $self->{on_error}($self, $fatal, $message); |
576 | $self->{on_error}($self, $fatal, $message); |
512 | $self->destroy if $fatal; |
577 | $self->destroy if $fatal; |
513 | } elsif ($self->{fh}) { |
578 | } elsif ($self->{fh} || $self->{connect}) { |
514 | $self->destroy; |
579 | $self->destroy; |
515 | Carp::croak "AnyEvent::Handle uncaught error: $message"; |
580 | Carp::croak "AnyEvent::Handle uncaught error: $message"; |
516 | } |
581 | } |
517 | } |
582 | } |
518 | |
583 | |
… | |
… | |
544 | $_[0]{on_eof} = $_[1]; |
609 | $_[0]{on_eof} = $_[1]; |
545 | } |
610 | } |
546 | |
611 | |
547 | =item $handle->on_timeout ($cb) |
612 | =item $handle->on_timeout ($cb) |
548 | |
613 | |
549 | Replace the current C<on_timeout> callback, or disables the callback (but |
614 | =item $handle->on_rtimeout ($cb) |
550 | not the timeout) if C<$cb> = C<undef>. See the C<timeout> constructor |
|
|
551 | argument and method. |
|
|
552 | |
615 | |
553 | =cut |
616 | =item $handle->on_wtimeout ($cb) |
554 | |
617 | |
555 | sub on_timeout { |
618 | Replace the current C<on_timeout>, C<on_rtimeout> or C<on_wtimeout> |
556 | $_[0]{on_timeout} = $_[1]; |
619 | callback, or disables the callback (but not the timeout) if C<$cb> = |
557 | } |
620 | C<undef>. See the C<timeout> constructor argument and method. |
|
|
621 | |
|
|
622 | =cut |
|
|
623 | |
|
|
624 | # see below |
558 | |
625 | |
559 | =item $handle->autocork ($boolean) |
626 | =item $handle->autocork ($boolean) |
560 | |
627 | |
561 | Enables or disables the current autocork behaviour (see C<autocork> |
628 | Enables or disables the current autocork behaviour (see C<autocork> |
562 | constructor argument). Changes will only take effect on the next write. |
629 | constructor argument). Changes will only take effect on the next write. |
… | |
… | |
577 | sub no_delay { |
644 | sub no_delay { |
578 | $_[0]{no_delay} = $_[1]; |
645 | $_[0]{no_delay} = $_[1]; |
579 | |
646 | |
580 | eval { |
647 | eval { |
581 | local $SIG{__DIE__}; |
648 | local $SIG{__DIE__}; |
582 | setsockopt $_[0]{fh}, &Socket::IPPROTO_TCP, &Socket::TCP_NODELAY, int $_[1] |
649 | setsockopt $_[0]{fh}, Socket::IPPROTO_TCP (), Socket::TCP_NODELAY (), int $_[1] |
583 | if $_[0]{fh}; |
650 | if $_[0]{fh}; |
584 | }; |
651 | }; |
585 | } |
652 | } |
586 | |
653 | |
|
|
654 | =item $handle->keepalive ($boolean) |
|
|
655 | |
|
|
656 | Enables or disables the C<keepalive> setting (see constructor argument of |
|
|
657 | the same name for details). |
|
|
658 | |
|
|
659 | =cut |
|
|
660 | |
|
|
661 | sub keepalive { |
|
|
662 | $_[0]{keepalive} = $_[1]; |
|
|
663 | |
|
|
664 | eval { |
|
|
665 | local $SIG{__DIE__}; |
|
|
666 | setsockopt $_[0]{fh}, Socket::SOL_SOCKET (), Socket::SO_KEEPALIVE (), int $_[1] |
|
|
667 | if $_[0]{fh}; |
|
|
668 | }; |
|
|
669 | } |
|
|
670 | |
|
|
671 | =item $handle->oobinline ($boolean) |
|
|
672 | |
|
|
673 | Enables or disables the C<oobinline> setting (see constructor argument of |
|
|
674 | the same name for details). |
|
|
675 | |
|
|
676 | =cut |
|
|
677 | |
|
|
678 | sub oobinline { |
|
|
679 | $_[0]{oobinline} = $_[1]; |
|
|
680 | |
|
|
681 | eval { |
|
|
682 | local $SIG{__DIE__}; |
|
|
683 | setsockopt $_[0]{fh}, Socket::SOL_SOCKET (), Socket::SO_OOBINLINE (), int $_[1] |
|
|
684 | if $_[0]{fh}; |
|
|
685 | }; |
|
|
686 | } |
|
|
687 | |
|
|
688 | =item $handle->keepalive ($boolean) |
|
|
689 | |
|
|
690 | Enables or disables the C<keepalive> setting (see constructor argument of |
|
|
691 | the same name for details). |
|
|
692 | |
|
|
693 | =cut |
|
|
694 | |
|
|
695 | sub keepalive { |
|
|
696 | $_[0]{keepalive} = $_[1]; |
|
|
697 | |
|
|
698 | eval { |
|
|
699 | local $SIG{__DIE__}; |
|
|
700 | setsockopt $_[0]{fh}, Socket::SOL_SOCKET (), Socket::SO_KEEPALIVE (), int $_[1] |
|
|
701 | if $_[0]{fh}; |
|
|
702 | }; |
|
|
703 | } |
|
|
704 | |
587 | =item $handle->on_starttls ($cb) |
705 | =item $handle->on_starttls ($cb) |
588 | |
706 | |
589 | Replace the current C<on_starttls> callback (see the C<on_starttls> constructor argument). |
707 | Replace the current C<on_starttls> callback (see the C<on_starttls> constructor argument). |
590 | |
708 | |
591 | =cut |
709 | =cut |
… | |
… | |
598 | |
716 | |
599 | Replace the current C<on_stoptls> callback (see the C<on_stoptls> constructor argument). |
717 | Replace the current C<on_stoptls> callback (see the C<on_stoptls> constructor argument). |
600 | |
718 | |
601 | =cut |
719 | =cut |
602 | |
720 | |
603 | sub on_starttls { |
721 | sub on_stoptls { |
604 | $_[0]{on_stoptls} = $_[1]; |
722 | $_[0]{on_stoptls} = $_[1]; |
605 | } |
723 | } |
606 | |
724 | |
|
|
725 | =item $handle->rbuf_max ($max_octets) |
|
|
726 | |
|
|
727 | Configures the C<rbuf_max> setting (C<undef> disables it). |
|
|
728 | |
|
|
729 | =cut |
|
|
730 | |
|
|
731 | sub rbuf_max { |
|
|
732 | $_[0]{rbuf_max} = $_[1]; |
|
|
733 | } |
|
|
734 | |
607 | ############################################################################# |
735 | ############################################################################# |
608 | |
736 | |
609 | =item $handle->timeout ($seconds) |
737 | =item $handle->timeout ($seconds) |
610 | |
738 | |
|
|
739 | =item $handle->rtimeout ($seconds) |
|
|
740 | |
|
|
741 | =item $handle->wtimeout ($seconds) |
|
|
742 | |
611 | Configures (or disables) the inactivity timeout. |
743 | Configures (or disables) the inactivity timeout. |
612 | |
744 | |
613 | =cut |
745 | =item $handle->timeout_reset |
614 | |
746 | |
615 | sub timeout { |
747 | =item $handle->rtimeout_reset |
|
|
748 | |
|
|
749 | =item $handle->wtimeout_reset |
|
|
750 | |
|
|
751 | Reset the activity timeout, as if data was received or sent. |
|
|
752 | |
|
|
753 | These methods are cheap to call. |
|
|
754 | |
|
|
755 | =cut |
|
|
756 | |
|
|
757 | for my $dir ("", "r", "w") { |
|
|
758 | my $timeout = "${dir}timeout"; |
|
|
759 | my $tw = "_${dir}tw"; |
|
|
760 | my $on_timeout = "on_${dir}timeout"; |
|
|
761 | my $activity = "_${dir}activity"; |
|
|
762 | my $cb; |
|
|
763 | |
|
|
764 | *$on_timeout = sub { |
|
|
765 | $_[0]{$on_timeout} = $_[1]; |
|
|
766 | }; |
|
|
767 | |
|
|
768 | *$timeout = sub { |
616 | my ($self, $timeout) = @_; |
769 | my ($self, $new_value) = @_; |
617 | |
770 | |
618 | $self->{timeout} = $timeout; |
771 | $self->{$timeout} = $new_value; |
619 | $self->_timeout; |
772 | delete $self->{$tw}; &$cb; |
620 | } |
773 | }; |
621 | |
774 | |
|
|
775 | *{"${dir}timeout_reset"} = sub { |
|
|
776 | $_[0]{$activity} = AE::now; |
|
|
777 | }; |
|
|
778 | |
|
|
779 | # main workhorse: |
622 | # reset the timeout watcher, as neccessary |
780 | # reset the timeout watcher, as neccessary |
623 | # also check for time-outs |
781 | # also check for time-outs |
624 | sub _timeout { |
782 | $cb = sub { |
625 | my ($self) = @_; |
783 | my ($self) = @_; |
626 | |
784 | |
627 | if ($self->{timeout} && $self->{fh}) { |
785 | if ($self->{$timeout} && $self->{fh}) { |
628 | my $NOW = AnyEvent->now; |
786 | my $NOW = AE::now; |
629 | |
787 | |
630 | # when would the timeout trigger? |
788 | # when would the timeout trigger? |
631 | my $after = $self->{_activity} + $self->{timeout} - $NOW; |
789 | my $after = $self->{$activity} + $self->{$timeout} - $NOW; |
632 | |
790 | |
633 | # now or in the past already? |
791 | # now or in the past already? |
634 | if ($after <= 0) { |
792 | if ($after <= 0) { |
635 | $self->{_activity} = $NOW; |
793 | $self->{$activity} = $NOW; |
636 | |
794 | |
637 | if ($self->{on_timeout}) { |
795 | if ($self->{$on_timeout}) { |
638 | $self->{on_timeout}($self); |
796 | $self->{$on_timeout}($self); |
639 | } else { |
797 | } else { |
640 | $self->_error (Errno::ETIMEDOUT); |
798 | $self->_error (Errno::ETIMEDOUT); |
|
|
799 | } |
|
|
800 | |
|
|
801 | # callback could have changed timeout value, optimise |
|
|
802 | return unless $self->{$timeout}; |
|
|
803 | |
|
|
804 | # calculate new after |
|
|
805 | $after = $self->{$timeout}; |
641 | } |
806 | } |
642 | |
807 | |
643 | # callback could have changed timeout value, optimise |
808 | Scalar::Util::weaken $self; |
644 | return unless $self->{timeout}; |
809 | return unless $self; # ->error could have destroyed $self |
645 | |
810 | |
646 | # calculate new after |
811 | $self->{$tw} ||= AE::timer $after, 0, sub { |
647 | $after = $self->{timeout}; |
812 | delete $self->{$tw}; |
|
|
813 | $cb->($self); |
|
|
814 | }; |
|
|
815 | } else { |
|
|
816 | delete $self->{$tw}; |
648 | } |
817 | } |
649 | |
|
|
650 | Scalar::Util::weaken $self; |
|
|
651 | return unless $self; # ->error could have destroyed $self |
|
|
652 | |
|
|
653 | $self->{_tw} ||= AnyEvent->timer (after => $after, cb => sub { |
|
|
654 | delete $self->{_tw}; |
|
|
655 | $self->_timeout; |
|
|
656 | }); |
|
|
657 | } else { |
|
|
658 | delete $self->{_tw}; |
|
|
659 | } |
818 | } |
660 | } |
819 | } |
661 | |
820 | |
662 | ############################################################################# |
821 | ############################################################################# |
663 | |
822 | |
… | |
… | |
678 | |
837 | |
679 | =item $handle->on_drain ($cb) |
838 | =item $handle->on_drain ($cb) |
680 | |
839 | |
681 | Sets the C<on_drain> callback or clears it (see the description of |
840 | Sets the C<on_drain> callback or clears it (see the description of |
682 | C<on_drain> in the constructor). |
841 | C<on_drain> in the constructor). |
|
|
842 | |
|
|
843 | This method may invoke callbacks (and therefore the handle might be |
|
|
844 | destroyed after it returns). |
683 | |
845 | |
684 | =cut |
846 | =cut |
685 | |
847 | |
686 | sub on_drain { |
848 | sub on_drain { |
687 | my ($self, $cb) = @_; |
849 | my ($self, $cb) = @_; |
… | |
… | |
696 | |
858 | |
697 | Queues the given scalar to be written. You can push as much data as you |
859 | Queues the given scalar to be written. You can push as much data as you |
698 | want (only limited by the available memory), as C<AnyEvent::Handle> |
860 | want (only limited by the available memory), as C<AnyEvent::Handle> |
699 | buffers it independently of the kernel. |
861 | buffers it independently of the kernel. |
700 | |
862 | |
|
|
863 | This method may invoke callbacks (and therefore the handle might be |
|
|
864 | destroyed after it returns). |
|
|
865 | |
701 | =cut |
866 | =cut |
702 | |
867 | |
703 | sub _drain_wbuf { |
868 | sub _drain_wbuf { |
704 | my ($self) = @_; |
869 | my ($self) = @_; |
705 | |
870 | |
… | |
… | |
711 | my $len = syswrite $self->{fh}, $self->{wbuf}; |
876 | my $len = syswrite $self->{fh}, $self->{wbuf}; |
712 | |
877 | |
713 | if (defined $len) { |
878 | if (defined $len) { |
714 | substr $self->{wbuf}, 0, $len, ""; |
879 | substr $self->{wbuf}, 0, $len, ""; |
715 | |
880 | |
716 | $self->{_activity} = AnyEvent->now; |
881 | $self->{_activity} = $self->{_wactivity} = AE::now; |
717 | |
882 | |
718 | $self->{on_drain}($self) |
883 | $self->{on_drain}($self) |
719 | if $self->{low_water_mark} >= (length $self->{wbuf}) + (length $self->{_tls_wbuf}) |
884 | if $self->{low_water_mark} >= (length $self->{wbuf}) + (length $self->{_tls_wbuf}) |
720 | && $self->{on_drain}; |
885 | && $self->{on_drain}; |
721 | |
886 | |
… | |
… | |
727 | |
892 | |
728 | # try to write data immediately |
893 | # try to write data immediately |
729 | $cb->() unless $self->{autocork}; |
894 | $cb->() unless $self->{autocork}; |
730 | |
895 | |
731 | # if still data left in wbuf, we need to poll |
896 | # if still data left in wbuf, we need to poll |
732 | $self->{_ww} = AnyEvent->io (fh => $self->{fh}, poll => "w", cb => $cb) |
897 | $self->{_ww} = AE::io $self->{fh}, 1, $cb |
733 | if length $self->{wbuf}; |
898 | if length $self->{wbuf}; |
734 | }; |
899 | }; |
735 | } |
900 | } |
736 | |
901 | |
737 | our %WH; |
902 | our %WH; |
738 | |
903 | |
|
|
904 | # deprecated |
739 | sub register_write_type($$) { |
905 | sub register_write_type($$) { |
740 | $WH{$_[0]} = $_[1]; |
906 | $WH{$_[0]} = $_[1]; |
741 | } |
907 | } |
742 | |
908 | |
743 | sub push_write { |
909 | sub push_write { |
744 | my $self = shift; |
910 | my $self = shift; |
745 | |
911 | |
746 | if (@_ > 1) { |
912 | if (@_ > 1) { |
747 | my $type = shift; |
913 | my $type = shift; |
748 | |
914 | |
|
|
915 | @_ = ($WH{$type} ||= _load_func "$type\::anyevent_write_type" |
749 | @_ = ($WH{$type} or Carp::croak "unsupported type passed to AnyEvent::Handle::push_write") |
916 | or Carp::croak "unsupported/unloadable type '$type' passed to AnyEvent::Handle::push_write") |
750 | ->($self, @_); |
917 | ->($self, @_); |
751 | } |
918 | } |
752 | |
919 | |
|
|
920 | # we downgrade here to avoid hard-to-track-down bugs, |
|
|
921 | # and diagnose the problem earlier and better. |
|
|
922 | |
753 | if ($self->{tls}) { |
923 | if ($self->{tls}) { |
754 | $self->{_tls_wbuf} .= $_[0]; |
924 | utf8::downgrade $self->{_tls_wbuf} .= $_[0]; |
755 | &_dotls ($self) if $self->{fh}; |
925 | &_dotls ($self) if $self->{fh}; |
756 | } else { |
926 | } else { |
757 | $self->{wbuf} .= $_[0]; |
927 | utf8::downgrade $self->{wbuf} .= $_[0]; |
758 | $self->_drain_wbuf if $self->{fh}; |
928 | $self->_drain_wbuf if $self->{fh}; |
759 | } |
929 | } |
760 | } |
930 | } |
761 | |
931 | |
762 | =item $handle->push_write (type => @args) |
932 | =item $handle->push_write (type => @args) |
763 | |
933 | |
764 | Instead of formatting your data yourself, you can also let this module do |
934 | Instead of formatting your data yourself, you can also let this module |
765 | the job by specifying a type and type-specific arguments. |
935 | do the job by specifying a type and type-specific arguments. You |
|
|
936 | can also specify the (fully qualified) name of a package, in which |
|
|
937 | case AnyEvent tries to load the package and then expects to find the |
|
|
938 | C<anyevent_read_type> function inside (see "custom write types", below). |
766 | |
939 | |
767 | Predefined types are (if you have ideas for additional types, feel free to |
940 | Predefined types are (if you have ideas for additional types, feel free to |
768 | drop by and tell us): |
941 | drop by and tell us): |
769 | |
942 | |
770 | =over 4 |
943 | =over 4 |
… | |
… | |
827 | Other languages could read single lines terminated by a newline and pass |
1000 | Other languages could read single lines terminated by a newline and pass |
828 | this line into their JSON decoder of choice. |
1001 | this line into their JSON decoder of choice. |
829 | |
1002 | |
830 | =cut |
1003 | =cut |
831 | |
1004 | |
|
|
1005 | sub json_coder() { |
|
|
1006 | eval { require JSON::XS; JSON::XS->new->utf8 } |
|
|
1007 | || do { require JSON; JSON->new->utf8 } |
|
|
1008 | } |
|
|
1009 | |
832 | register_write_type json => sub { |
1010 | register_write_type json => sub { |
833 | my ($self, $ref) = @_; |
1011 | my ($self, $ref) = @_; |
834 | |
1012 | |
835 | require JSON; |
1013 | my $json = $self->{json} ||= json_coder; |
836 | |
1014 | |
837 | $self->{json} ? $self->{json}->encode ($ref) |
1015 | $json->encode ($ref) |
838 | : JSON::encode_json ($ref) |
|
|
839 | }; |
1016 | }; |
840 | |
1017 | |
841 | =item storable => $reference |
1018 | =item storable => $reference |
842 | |
1019 | |
843 | Freezes the given reference using L<Storable> and writes it to the |
1020 | Freezes the given reference using L<Storable> and writes it to the |
… | |
… | |
869 | the peer. |
1046 | the peer. |
870 | |
1047 | |
871 | You can rely on the normal read queue and C<on_eof> handling |
1048 | You can rely on the normal read queue and C<on_eof> handling |
872 | afterwards. This is the cleanest way to close a connection. |
1049 | afterwards. This is the cleanest way to close a connection. |
873 | |
1050 | |
|
|
1051 | This method may invoke callbacks (and therefore the handle might be |
|
|
1052 | destroyed after it returns). |
|
|
1053 | |
874 | =cut |
1054 | =cut |
875 | |
1055 | |
876 | sub push_shutdown { |
1056 | sub push_shutdown { |
877 | my ($self) = @_; |
1057 | my ($self) = @_; |
878 | |
1058 | |
879 | delete $self->{low_water_mark}; |
1059 | delete $self->{low_water_mark}; |
880 | $self->on_drain (sub { shutdown $_[0]{fh}, 1 }); |
1060 | $self->on_drain (sub { shutdown $_[0]{fh}, 1 }); |
881 | } |
1061 | } |
882 | |
1062 | |
883 | =item AnyEvent::Handle::register_write_type type => $coderef->($handle, @args) |
1063 | =item custom write types - Package::anyevent_write_type $handle, @args |
884 | |
1064 | |
885 | This function (not method) lets you add your own types to C<push_write>. |
1065 | Instead of one of the predefined types, you can also specify the name of |
|
|
1066 | a package. AnyEvent will try to load the package and then expects to find |
|
|
1067 | a function named C<anyevent_write_type> inside. If it isn't found, it |
|
|
1068 | progressively tries to load the parent package until it either finds the |
|
|
1069 | function (good) or runs out of packages (bad). |
|
|
1070 | |
886 | Whenever the given C<type> is used, C<push_write> will invoke the code |
1071 | Whenever the given C<type> is used, C<push_write> will the function with |
887 | reference with the handle object and the remaining arguments. |
1072 | the handle object and the remaining arguments. |
888 | |
1073 | |
889 | The code reference is supposed to return a single octet string that will |
1074 | The function is supposed to return a single octet string that will be |
890 | be appended to the write buffer. |
1075 | appended to the write buffer, so you cna mentally treat this function as a |
|
|
1076 | "arguments to on-the-wire-format" converter. |
891 | |
1077 | |
892 | Note that this is a function, and all types registered this way will be |
1078 | Example: implement a custom write type C<join> that joins the remaining |
893 | global, so try to use unique names. |
1079 | arguments using the first one. |
|
|
1080 | |
|
|
1081 | $handle->push_write (My::Type => " ", 1,2,3); |
|
|
1082 | |
|
|
1083 | # uses the following package, which can be defined in the "My::Type" or in |
|
|
1084 | # the "My" modules to be auto-loaded, or just about anywhere when the |
|
|
1085 | # My::Type::anyevent_write_type is defined before invoking it. |
|
|
1086 | |
|
|
1087 | package My::Type; |
|
|
1088 | |
|
|
1089 | sub anyevent_write_type { |
|
|
1090 | my ($handle, $delim, @args) = @_; |
|
|
1091 | |
|
|
1092 | join $delim, @args |
|
|
1093 | } |
894 | |
1094 | |
895 | =cut |
1095 | =cut |
896 | |
1096 | |
897 | ############################################################################# |
1097 | ############################################################################# |
898 | |
1098 | |
… | |
… | |
981 | |
1181 | |
982 | sub _drain_rbuf { |
1182 | sub _drain_rbuf { |
983 | my ($self) = @_; |
1183 | my ($self) = @_; |
984 | |
1184 | |
985 | # avoid recursion |
1185 | # avoid recursion |
986 | return if exists $self->{_skip_drain_rbuf}; |
1186 | return if $self->{_skip_drain_rbuf}; |
987 | local $self->{_skip_drain_rbuf} = 1; |
1187 | local $self->{_skip_drain_rbuf} = 1; |
988 | |
|
|
989 | if ( |
|
|
990 | defined $self->{rbuf_max} |
|
|
991 | && $self->{rbuf_max} < length $self->{rbuf} |
|
|
992 | ) { |
|
|
993 | $self->_error (Errno::ENOSPC, 1), return; |
|
|
994 | } |
|
|
995 | |
1188 | |
996 | while () { |
1189 | while () { |
997 | # we need to use a separate tls read buffer, as we must not receive data while |
1190 | # we need to use a separate tls read buffer, as we must not receive data while |
998 | # we are draining the buffer, and this can only happen with TLS. |
1191 | # we are draining the buffer, and this can only happen with TLS. |
999 | $self->{rbuf} .= delete $self->{_tls_rbuf} |
1192 | $self->{rbuf} .= delete $self->{_tls_rbuf} |
… | |
… | |
1041 | : $self->_error (0, 1, "Unexpected end-of-file"); |
1234 | : $self->_error (0, 1, "Unexpected end-of-file"); |
1042 | |
1235 | |
1043 | return; |
1236 | return; |
1044 | } |
1237 | } |
1045 | |
1238 | |
|
|
1239 | if ( |
|
|
1240 | defined $self->{rbuf_max} |
|
|
1241 | && $self->{rbuf_max} < length $self->{rbuf} |
|
|
1242 | ) { |
|
|
1243 | $self->_error (Errno::ENOSPC, 1), return; |
|
|
1244 | } |
|
|
1245 | |
1046 | # may need to restart read watcher |
1246 | # may need to restart read watcher |
1047 | unless ($self->{_rw}) { |
1247 | unless ($self->{_rw}) { |
1048 | $self->start_read |
1248 | $self->start_read |
1049 | if $self->{on_read} || @{ $self->{_queue} }; |
1249 | if $self->{on_read} || @{ $self->{_queue} }; |
1050 | } |
1250 | } |
… | |
… | |
1053 | =item $handle->on_read ($cb) |
1253 | =item $handle->on_read ($cb) |
1054 | |
1254 | |
1055 | This replaces the currently set C<on_read> callback, or clears it (when |
1255 | This replaces the currently set C<on_read> callback, or clears it (when |
1056 | the new callback is C<undef>). See the description of C<on_read> in the |
1256 | the new callback is C<undef>). See the description of C<on_read> in the |
1057 | constructor. |
1257 | constructor. |
|
|
1258 | |
|
|
1259 | This method may invoke callbacks (and therefore the handle might be |
|
|
1260 | destroyed after it returns). |
1058 | |
1261 | |
1059 | =cut |
1262 | =cut |
1060 | |
1263 | |
1061 | sub on_read { |
1264 | sub on_read { |
1062 | my ($self, $cb) = @_; |
1265 | my ($self, $cb) = @_; |
… | |
… | |
1102 | |
1305 | |
1103 | If enough data was available, then the callback must remove all data it is |
1306 | If enough data was available, then the callback must remove all data it is |
1104 | interested in (which can be none at all) and return a true value. After returning |
1307 | interested in (which can be none at all) and return a true value. After returning |
1105 | true, it will be removed from the queue. |
1308 | true, it will be removed from the queue. |
1106 | |
1309 | |
|
|
1310 | These methods may invoke callbacks (and therefore the handle might be |
|
|
1311 | destroyed after it returns). |
|
|
1312 | |
1107 | =cut |
1313 | =cut |
1108 | |
1314 | |
1109 | our %RH; |
1315 | our %RH; |
1110 | |
1316 | |
1111 | sub register_read_type($$) { |
1317 | sub register_read_type($$) { |
… | |
… | |
1117 | my $cb = pop; |
1323 | my $cb = pop; |
1118 | |
1324 | |
1119 | if (@_) { |
1325 | if (@_) { |
1120 | my $type = shift; |
1326 | my $type = shift; |
1121 | |
1327 | |
|
|
1328 | $cb = ($RH{$type} ||= _load_func "$type\::anyevent_read_type" |
1122 | $cb = ($RH{$type} or Carp::croak "unsupported type passed to AnyEvent::Handle::push_read") |
1329 | or Carp::croak "unsupported/unloadable type '$type' passed to AnyEvent::Handle::push_read") |
1123 | ->($self, $cb, @_); |
1330 | ->($self, $cb, @_); |
1124 | } |
1331 | } |
1125 | |
1332 | |
1126 | push @{ $self->{_queue} }, $cb; |
1333 | push @{ $self->{_queue} }, $cb; |
1127 | $self->_drain_rbuf; |
1334 | $self->_drain_rbuf; |
… | |
… | |
1136 | |
1343 | |
1137 | $cb = ($RH{$type} or Carp::croak "unsupported type passed to AnyEvent::Handle::unshift_read") |
1344 | $cb = ($RH{$type} or Carp::croak "unsupported type passed to AnyEvent::Handle::unshift_read") |
1138 | ->($self, $cb, @_); |
1345 | ->($self, $cb, @_); |
1139 | } |
1346 | } |
1140 | |
1347 | |
1141 | |
|
|
1142 | unshift @{ $self->{_queue} }, $cb; |
1348 | unshift @{ $self->{_queue} }, $cb; |
1143 | $self->_drain_rbuf; |
1349 | $self->_drain_rbuf; |
1144 | } |
1350 | } |
1145 | |
1351 | |
1146 | =item $handle->push_read (type => @args, $cb) |
1352 | =item $handle->push_read (type => @args, $cb) |
1147 | |
1353 | |
1148 | =item $handle->unshift_read (type => @args, $cb) |
1354 | =item $handle->unshift_read (type => @args, $cb) |
1149 | |
1355 | |
1150 | Instead of providing a callback that parses the data itself you can chose |
1356 | Instead of providing a callback that parses the data itself you can chose |
1151 | between a number of predefined parsing formats, for chunks of data, lines |
1357 | between a number of predefined parsing formats, for chunks of data, lines |
1152 | etc. |
1358 | etc. You can also specify the (fully qualified) name of a package, in |
|
|
1359 | which case AnyEvent tries to load the package and then expects to find the |
|
|
1360 | C<anyevent_read_type> function inside (see "custom read types", below). |
1153 | |
1361 | |
1154 | Predefined types are (if you have ideas for additional types, feel free to |
1362 | Predefined types are (if you have ideas for additional types, feel free to |
1155 | drop by and tell us): |
1363 | drop by and tell us): |
1156 | |
1364 | |
1157 | =over 4 |
1365 | =over 4 |
… | |
… | |
1397 | =cut |
1605 | =cut |
1398 | |
1606 | |
1399 | register_read_type json => sub { |
1607 | register_read_type json => sub { |
1400 | my ($self, $cb) = @_; |
1608 | my ($self, $cb) = @_; |
1401 | |
1609 | |
1402 | my $json = $self->{json} ||= |
1610 | my $json = $self->{json} ||= json_coder; |
1403 | eval { require JSON::XS; JSON::XS->new->utf8 } |
|
|
1404 | || do { require JSON; JSON->new->utf8 }; |
|
|
1405 | |
1611 | |
1406 | my $data; |
1612 | my $data; |
1407 | my $rbuf = \$self->{rbuf}; |
1613 | my $rbuf = \$self->{rbuf}; |
1408 | |
1614 | |
1409 | sub { |
1615 | sub { |
… | |
… | |
1478 | } |
1684 | } |
1479 | }; |
1685 | }; |
1480 | |
1686 | |
1481 | =back |
1687 | =back |
1482 | |
1688 | |
1483 | =item AnyEvent::Handle::register_read_type type => $coderef->($handle, $cb, @args) |
1689 | =item custom read types - Package::anyevent_read_type $handle, $cb, @args |
1484 | |
1690 | |
1485 | This function (not method) lets you add your own types to C<push_read>. |
1691 | Instead of one of the predefined types, you can also specify the name |
|
|
1692 | of a package. AnyEvent will try to load the package and then expects to |
|
|
1693 | find a function named C<anyevent_read_type> inside. If it isn't found, it |
|
|
1694 | progressively tries to load the parent package until it either finds the |
|
|
1695 | function (good) or runs out of packages (bad). |
1486 | |
1696 | |
1487 | Whenever the given C<type> is used, C<push_read> will invoke the code |
1697 | Whenever this type is used, C<push_read> will invoke the function with the |
1488 | reference with the handle object, the callback and the remaining |
1698 | handle object, the original callback and the remaining arguments. |
1489 | arguments. |
|
|
1490 | |
1699 | |
1491 | The code reference is supposed to return a callback (usually a closure) |
1700 | The function is supposed to return a callback (usually a closure) that |
1492 | that works as a plain read callback (see C<< ->push_read ($cb) >>). |
1701 | works as a plain read callback (see C<< ->push_read ($cb) >>), so you can |
|
|
1702 | mentally treat the function as a "configurable read type to read callback" |
|
|
1703 | converter. |
1493 | |
1704 | |
1494 | It should invoke the passed callback when it is done reading (remember to |
1705 | It should invoke the original callback when it is done reading (remember |
1495 | pass C<$handle> as first argument as all other callbacks do that). |
1706 | to pass C<$handle> as first argument as all other callbacks do that, |
|
|
1707 | although there is no strict requirement on this). |
1496 | |
1708 | |
1497 | Note that this is a function, and all types registered this way will be |
|
|
1498 | global, so try to use unique names. |
|
|
1499 | |
|
|
1500 | For examples, see the source of this module (F<perldoc -m AnyEvent::Handle>, |
1709 | For examples, see the source of this module (F<perldoc -m |
1501 | search for C<register_read_type>)). |
1710 | AnyEvent::Handle>, search for C<register_read_type>)). |
1502 | |
1711 | |
1503 | =item $handle->stop_read |
1712 | =item $handle->stop_read |
1504 | |
1713 | |
1505 | =item $handle->start_read |
1714 | =item $handle->start_read |
1506 | |
1715 | |
… | |
… | |
1526 | } |
1735 | } |
1527 | |
1736 | |
1528 | sub start_read { |
1737 | sub start_read { |
1529 | my ($self) = @_; |
1738 | my ($self) = @_; |
1530 | |
1739 | |
1531 | unless ($self->{_rw} || $self->{_eof}) { |
1740 | unless ($self->{_rw} || $self->{_eof} || !$self->{fh}) { |
1532 | Scalar::Util::weaken $self; |
1741 | Scalar::Util::weaken $self; |
1533 | |
1742 | |
1534 | $self->{_rw} = AnyEvent->io (fh => $self->{fh}, poll => "r", cb => sub { |
1743 | $self->{_rw} = AE::io $self->{fh}, 0, sub { |
1535 | my $rbuf = \($self->{tls} ? my $buf : $self->{rbuf}); |
1744 | my $rbuf = \($self->{tls} ? my $buf : $self->{rbuf}); |
1536 | my $len = sysread $self->{fh}, $$rbuf, $self->{read_size} || 8192, length $$rbuf; |
1745 | my $len = sysread $self->{fh}, $$rbuf, $self->{read_size} || 8192, length $$rbuf; |
1537 | |
1746 | |
1538 | if ($len > 0) { |
1747 | if ($len > 0) { |
1539 | $self->{_activity} = AnyEvent->now; |
1748 | $self->{_activity} = $self->{_ractivity} = AE::now; |
1540 | |
1749 | |
1541 | if ($self->{tls}) { |
1750 | if ($self->{tls}) { |
1542 | Net::SSLeay::BIO_write ($self->{_rbio}, $$rbuf); |
1751 | Net::SSLeay::BIO_write ($self->{_rbio}, $$rbuf); |
1543 | |
1752 | |
1544 | &_dotls ($self); |
1753 | &_dotls ($self); |
… | |
… | |
1552 | $self->_drain_rbuf; |
1761 | $self->_drain_rbuf; |
1553 | |
1762 | |
1554 | } elsif ($! != EAGAIN && $! != EINTR && $! != WSAEWOULDBLOCK) { |
1763 | } elsif ($! != EAGAIN && $! != EINTR && $! != WSAEWOULDBLOCK) { |
1555 | return $self->_error ($!, 1); |
1764 | return $self->_error ($!, 1); |
1556 | } |
1765 | } |
1557 | }); |
1766 | }; |
1558 | } |
1767 | } |
1559 | } |
1768 | } |
1560 | |
1769 | |
1561 | our $ERROR_SYSCALL; |
1770 | our $ERROR_SYSCALL; |
1562 | our $ERROR_WANT_READ; |
1771 | our $ERROR_WANT_READ; |
… | |
… | |
1629 | && ($tmp != $ERROR_SYSCALL || $!); |
1838 | && ($tmp != $ERROR_SYSCALL || $!); |
1630 | |
1839 | |
1631 | while (length ($tmp = Net::SSLeay::BIO_read ($self->{_wbio}))) { |
1840 | while (length ($tmp = Net::SSLeay::BIO_read ($self->{_wbio}))) { |
1632 | $self->{wbuf} .= $tmp; |
1841 | $self->{wbuf} .= $tmp; |
1633 | $self->_drain_wbuf; |
1842 | $self->_drain_wbuf; |
|
|
1843 | $self->{tls} or return; # tls session might have gone away in callback |
1634 | } |
1844 | } |
1635 | |
1845 | |
1636 | $self->{_on_starttls} |
1846 | $self->{_on_starttls} |
1637 | and Net::SSLeay::state ($self->{tls}) == Net::SSLeay::ST_OK () |
1847 | and Net::SSLeay::state ($self->{tls}) == Net::SSLeay::ST_OK () |
1638 | and (delete $self->{_on_starttls})->($self, 1, "TLS/SSL connection established"); |
1848 | and (delete $self->{_on_starttls})->($self, 1, "TLS/SSL connection established"); |
… | |
… | |
1663 | |
1873 | |
1664 | Due to bugs in OpenSSL, it might or might not be possible to do multiple |
1874 | Due to bugs in OpenSSL, it might or might not be possible to do multiple |
1665 | handshakes on the same stream. Best do not attempt to use the stream after |
1875 | handshakes on the same stream. Best do not attempt to use the stream after |
1666 | stopping TLS. |
1876 | stopping TLS. |
1667 | |
1877 | |
|
|
1878 | This method may invoke callbacks (and therefore the handle might be |
|
|
1879 | destroyed after it returns). |
|
|
1880 | |
1668 | =cut |
1881 | =cut |
1669 | |
1882 | |
1670 | our %TLS_CACHE; #TODO not yet documented, should we? |
1883 | our %TLS_CACHE; #TODO not yet documented, should we? |
1671 | |
1884 | |
1672 | sub starttls { |
1885 | sub starttls { |
… | |
… | |
1683 | require Net::SSLeay; |
1896 | require Net::SSLeay; |
1684 | |
1897 | |
1685 | $ERROR_SYSCALL = Net::SSLeay::ERROR_SYSCALL (); |
1898 | $ERROR_SYSCALL = Net::SSLeay::ERROR_SYSCALL (); |
1686 | $ERROR_WANT_READ = Net::SSLeay::ERROR_WANT_READ (); |
1899 | $ERROR_WANT_READ = Net::SSLeay::ERROR_WANT_READ (); |
1687 | |
1900 | |
1688 | $tls = $self->{tls}; |
1901 | $tls = delete $self->{tls}; |
1689 | $ctx = $self->{tls_ctx}; |
1902 | $ctx = $self->{tls_ctx}; |
1690 | |
1903 | |
1691 | local $Carp::CarpLevel = 1; # skip ourselves when creating a new context or session |
1904 | local $Carp::CarpLevel = 1; # skip ourselves when creating a new context or session |
1692 | |
1905 | |
1693 | if ("HASH" eq ref $ctx) { |
1906 | if ("HASH" eq ref $ctx) { |
… | |
… | |
1722 | Net::SSLeay::CTX_set_mode ($tls, 1|2); |
1935 | Net::SSLeay::CTX_set_mode ($tls, 1|2); |
1723 | |
1936 | |
1724 | $self->{_rbio} = Net::SSLeay::BIO_new (Net::SSLeay::BIO_s_mem ()); |
1937 | $self->{_rbio} = Net::SSLeay::BIO_new (Net::SSLeay::BIO_s_mem ()); |
1725 | $self->{_wbio} = Net::SSLeay::BIO_new (Net::SSLeay::BIO_s_mem ()); |
1938 | $self->{_wbio} = Net::SSLeay::BIO_new (Net::SSLeay::BIO_s_mem ()); |
1726 | |
1939 | |
|
|
1940 | Net::SSLeay::BIO_write ($self->{_rbio}, delete $self->{rbuf}); |
|
|
1941 | |
1727 | Net::SSLeay::set_bio ($tls, $self->{_rbio}, $self->{_wbio}); |
1942 | Net::SSLeay::set_bio ($tls, $self->{_rbio}, $self->{_wbio}); |
1728 | |
1943 | |
1729 | $self->{_on_starttls} = sub { $_[0]{on_starttls}(@_) } |
1944 | $self->{_on_starttls} = sub { $_[0]{on_starttls}(@_) } |
1730 | if $self->{on_starttls}; |
1945 | if $self->{on_starttls}; |
1731 | |
1946 | |
… | |
… | |
1735 | |
1950 | |
1736 | =item $handle->stoptls |
1951 | =item $handle->stoptls |
1737 | |
1952 | |
1738 | Shuts down the SSL connection - this makes a proper EOF handshake by |
1953 | Shuts down the SSL connection - this makes a proper EOF handshake by |
1739 | sending a close notify to the other side, but since OpenSSL doesn't |
1954 | sending a close notify to the other side, but since OpenSSL doesn't |
1740 | support non-blocking shut downs, it is not guarenteed that you can re-use |
1955 | support non-blocking shut downs, it is not guaranteed that you can re-use |
1741 | the stream afterwards. |
1956 | the stream afterwards. |
|
|
1957 | |
|
|
1958 | This method may invoke callbacks (and therefore the handle might be |
|
|
1959 | destroyed after it returns). |
1742 | |
1960 | |
1743 | =cut |
1961 | =cut |
1744 | |
1962 | |
1745 | sub stoptls { |
1963 | sub stoptls { |
1746 | my ($self) = @_; |
1964 | my ($self) = @_; |
1747 | |
1965 | |
1748 | if ($self->{tls}) { |
1966 | if ($self->{tls} && $self->{fh}) { |
1749 | Net::SSLeay::shutdown ($self->{tls}); |
1967 | Net::SSLeay::shutdown ($self->{tls}); |
1750 | |
1968 | |
1751 | &_dotls; |
1969 | &_dotls; |
1752 | |
1970 | |
1753 | # # we don't give a shit. no, we do, but we can't. no...#d# |
1971 | # # we don't give a shit. no, we do, but we can't. no...#d# |
… | |
… | |
1760 | my ($self) = @_; |
1978 | my ($self) = @_; |
1761 | |
1979 | |
1762 | return unless $self->{tls}; |
1980 | return unless $self->{tls}; |
1763 | |
1981 | |
1764 | $self->{tls_ctx}->_put_session (delete $self->{tls}) |
1982 | $self->{tls_ctx}->_put_session (delete $self->{tls}) |
1765 | if ref $self->{tls}; |
1983 | if $self->{tls} > 0; |
1766 | |
1984 | |
1767 | delete @$self{qw(_rbio _wbio _tls_wbuf _on_starttls)}; |
1985 | delete @$self{qw(_rbio _wbio _tls_wbuf _on_starttls)}; |
1768 | } |
1986 | } |
1769 | |
1987 | |
1770 | sub DESTROY { |
1988 | sub DESTROY { |
… | |
… | |
1778 | my $fh = delete $self->{fh}; |
1996 | my $fh = delete $self->{fh}; |
1779 | my $wbuf = delete $self->{wbuf}; |
1997 | my $wbuf = delete $self->{wbuf}; |
1780 | |
1998 | |
1781 | my @linger; |
1999 | my @linger; |
1782 | |
2000 | |
1783 | push @linger, AnyEvent->io (fh => $fh, poll => "w", cb => sub { |
2001 | push @linger, AE::io $fh, 1, sub { |
1784 | my $len = syswrite $fh, $wbuf, length $wbuf; |
2002 | my $len = syswrite $fh, $wbuf, length $wbuf; |
1785 | |
2003 | |
1786 | if ($len > 0) { |
2004 | if ($len > 0) { |
1787 | substr $wbuf, 0, $len, ""; |
2005 | substr $wbuf, 0, $len, ""; |
1788 | } else { |
2006 | } else { |
1789 | @linger = (); # end |
2007 | @linger = (); # end |
1790 | } |
2008 | } |
1791 | }); |
2009 | }; |
1792 | push @linger, AnyEvent->timer (after => $linger, cb => sub { |
2010 | push @linger, AE::timer $linger, 0, sub { |
1793 | @linger = (); |
2011 | @linger = (); |
1794 | }); |
2012 | }; |
1795 | } |
2013 | } |
1796 | } |
2014 | } |
1797 | |
2015 | |
1798 | =item $handle->destroy |
2016 | =item $handle->destroy |
1799 | |
2017 | |
… | |
… | |
1830 | |
2048 | |
1831 | sub AnyEvent::Handle::destroyed::AUTOLOAD { |
2049 | sub AnyEvent::Handle::destroyed::AUTOLOAD { |
1832 | #nop |
2050 | #nop |
1833 | } |
2051 | } |
1834 | |
2052 | |
|
|
2053 | =item $handle->destroyed |
|
|
2054 | |
|
|
2055 | Returns false as long as the handle hasn't been destroyed by a call to C<< |
|
|
2056 | ->destroy >>, true otherwise. |
|
|
2057 | |
|
|
2058 | Can be useful to decide whether the handle is still valid after some |
|
|
2059 | callback possibly destroyed the handle. For example, C<< ->push_write >>, |
|
|
2060 | C<< ->starttls >> and other methods can call user callbacks, which in turn |
|
|
2061 | can destroy the handle, so work can be avoided by checking sometimes: |
|
|
2062 | |
|
|
2063 | $hdl->starttls ("accept"); |
|
|
2064 | return if $hdl->destroyed; |
|
|
2065 | $hdl->push_write (... |
|
|
2066 | |
|
|
2067 | Note that the call to C<push_write> will silently be ignored if the handle |
|
|
2068 | has been destroyed, so often you can just ignore the possibility of the |
|
|
2069 | handle being destroyed. |
|
|
2070 | |
|
|
2071 | =cut |
|
|
2072 | |
|
|
2073 | sub destroyed { 0 } |
|
|
2074 | sub AnyEvent::Handle::destroyed::destroyed { 1 } |
|
|
2075 | |
1835 | =item AnyEvent::Handle::TLS_CTX |
2076 | =item AnyEvent::Handle::TLS_CTX |
1836 | |
2077 | |
1837 | This function creates and returns the AnyEvent::TLS object used by default |
2078 | This function creates and returns the AnyEvent::TLS object used by default |
1838 | for TLS mode. |
2079 | for TLS mode. |
1839 | |
2080 | |