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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 = 4.12; |
19 | our $VERSION = 4.13; |
20 | |
20 | |
21 | =head1 SYNOPSIS |
21 | =head1 SYNOPSIS |
22 | |
22 | |
23 | use AnyEvent; |
23 | use AnyEvent; |
24 | use AnyEvent::Handle; |
24 | use AnyEvent::Handle; |
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224 | if ($self->{tls}) { |
224 | if ($self->{tls}) { |
225 | require Net::SSLeay; |
225 | require Net::SSLeay; |
226 | $self->starttls (delete $self->{tls}, delete $self->{tls_ctx}); |
226 | $self->starttls (delete $self->{tls}, delete $self->{tls_ctx}); |
227 | } |
227 | } |
228 | |
228 | |
229 | # $self->on_eof (delete $self->{on_eof} ) if $self->{on_eof}; # nop |
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230 | # $self->on_error (delete $self->{on_error}) if $self->{on_error}; # nop |
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231 | # $self->on_read (delete $self->{on_read} ) if $self->{on_read}; # nop |
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232 | $self->on_drain (delete $self->{on_drain}) if $self->{on_drain}; |
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233 | |
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234 | $self->{_activity} = AnyEvent->now; |
229 | $self->{_activity} = AnyEvent->now; |
235 | $self->_timeout; |
230 | $self->_timeout; |
236 | |
231 | |
237 | $self->start_read; |
232 | $self->on_drain (delete $self->{on_drain}) if $self->{on_drain}; |
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233 | $self->on_read (delete $self->{on_read} ) if $self->{on_read}; |
238 | |
234 | |
239 | $self |
235 | $self |
240 | } |
236 | } |
241 | |
237 | |
242 | sub _shutdown { |
238 | sub _shutdown { |
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620 | =cut |
616 | =cut |
621 | |
617 | |
622 | sub _drain_rbuf { |
618 | sub _drain_rbuf { |
623 | my ($self) = @_; |
619 | my ($self) = @_; |
624 | |
620 | |
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|
621 | local $self->{_in_drain} = 1; |
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622 | |
625 | if ( |
623 | if ( |
626 | defined $self->{rbuf_max} |
624 | defined $self->{rbuf_max} |
627 | && $self->{rbuf_max} < length $self->{rbuf} |
625 | && $self->{rbuf_max} < length $self->{rbuf} |
628 | ) { |
626 | ) { |
629 | return $self->_error (&Errno::ENOSPC, 1); |
627 | return $self->_error (&Errno::ENOSPC, 1); |
630 | } |
628 | } |
631 | |
629 | |
632 | return if $self->{in_drain}; |
630 | while () { |
633 | local $self->{in_drain} = 1; |
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634 | |
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635 | while (my $len = length $self->{rbuf}) { |
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636 | no strict 'refs'; |
631 | no strict 'refs'; |
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632 | |
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633 | my $len = length $self->{rbuf}; |
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634 | |
637 | if (my $cb = shift @{ $self->{_queue} }) { |
635 | if (my $cb = shift @{ $self->{_queue} }) { |
638 | unless ($cb->($self)) { |
636 | unless ($cb->($self)) { |
639 | if ($self->{_eof}) { |
637 | if ($self->{_eof}) { |
640 | # 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) |
641 | return $self->_error (&Errno::EPIPE, 1); |
639 | return $self->_error (&Errno::EPIPE, 1); |
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686 | |
684 | |
687 | sub on_read { |
685 | sub on_read { |
688 | my ($self, $cb) = @_; |
686 | my ($self, $cb) = @_; |
689 | |
687 | |
690 | $self->{on_read} = $cb; |
688 | $self->{on_read} = $cb; |
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689 | $self->_drain_rbuf if $cb && !$self->{_in_drain}; |
691 | } |
690 | } |
692 | |
691 | |
693 | =item $handle->rbuf |
692 | =item $handle->rbuf |
694 | |
693 | |
695 | Returns the read buffer (as a modifiable lvalue). |
694 | Returns the read buffer (as a modifiable lvalue). |
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744 | $cb = ($RH{$type} or Carp::croak "unsupported type passed to AnyEvent::Handle::push_read") |
743 | $cb = ($RH{$type} or Carp::croak "unsupported type passed to AnyEvent::Handle::push_read") |
745 | ->($self, $cb, @_); |
744 | ->($self, $cb, @_); |
746 | } |
745 | } |
747 | |
746 | |
748 | push @{ $self->{_queue} }, $cb; |
747 | push @{ $self->{_queue} }, $cb; |
749 | $self->_drain_rbuf; |
748 | $self->_drain_rbuf unless $self->{_in_drain}; |
750 | } |
749 | } |
751 | |
750 | |
752 | sub unshift_read { |
751 | sub unshift_read { |
753 | my $self = shift; |
752 | my $self = shift; |
754 | my $cb = pop; |
753 | my $cb = pop; |
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760 | ->($self, $cb, @_); |
759 | ->($self, $cb, @_); |
761 | } |
760 | } |
762 | |
761 | |
763 | |
762 | |
764 | unshift @{ $self->{_queue} }, $cb; |
763 | unshift @{ $self->{_queue} }, $cb; |
765 | $self->_drain_rbuf; |
764 | $self->_drain_rbuf unless $self->{_in_drain}; |
766 | } |
765 | } |
767 | |
766 | |
768 | =item $handle->push_read (type => @args, $cb) |
767 | =item $handle->push_read (type => @args, $cb) |
769 | |
768 | |
770 | =item $handle->unshift_read (type => @args, $cb) |
769 | =item $handle->unshift_read (type => @args, $cb) |
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1033 | =item $handle->stop_read |
1032 | =item $handle->stop_read |
1034 | |
1033 | |
1035 | =item $handle->start_read |
1034 | =item $handle->start_read |
1036 | |
1035 | |
1037 | In rare cases you actually do not want to read anything from the |
1036 | In rare cases you actually do not want to read anything from the |
1038 | socket. In this case you can call C<stop_read>. Neither C<on_read> no |
1037 | socket. In this case you can call C<stop_read>. Neither C<on_read> nor |
1039 | any queued callbacks will be executed then. To start reading again, call |
1038 | any queued callbacks will be executed then. To start reading again, call |
1040 | C<start_read>. |
1039 | C<start_read>. |
1041 | |
1040 | |
1042 | Note that AnyEvent::Handle will automatically C<start_read> for you when |
1041 | Note that AnyEvent::Handle will automatically C<start_read> for you when |
1043 | you change the C<on_read> callback or push/unshift a read callback, and it |
1042 | you change the C<on_read> callback or push/unshift a read callback, and it |
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1065 | if ($len > 0) { |
1064 | if ($len > 0) { |
1066 | $self->{_activity} = AnyEvent->now; |
1065 | $self->{_activity} = AnyEvent->now; |
1067 | |
1066 | |
1068 | $self->{filter_r} |
1067 | $self->{filter_r} |
1069 | ? $self->{filter_r}($self, $rbuf) |
1068 | ? $self->{filter_r}($self, $rbuf) |
1070 | : $self->_drain_rbuf; |
1069 | : $self->{_in_drain} || $self->_drain_rbuf; |
1071 | |
1070 | |
1072 | } elsif (defined $len) { |
1071 | } elsif (defined $len) { |
1073 | delete $self->{_rw}; |
1072 | delete $self->{_rw}; |
1074 | $self->{_eof} = 1; |
1073 | $self->{_eof} = 1; |
1075 | $self->_drain_rbuf; |
1074 | $self->_drain_rbuf unless $self->{_in_drain}; |
1076 | |
1075 | |
1077 | } elsif ($! != EAGAIN && $! != EINTR && $! != WSAEWOULDBLOCK) { |
1076 | } elsif ($! != EAGAIN && $! != EINTR && $! != WSAEWOULDBLOCK) { |
1078 | return $self->_error ($!, 1); |
1077 | return $self->_error ($!, 1); |
1079 | } |
1078 | } |
1080 | }); |
1079 | }); |
… | |
… | |
1098 | } |
1097 | } |
1099 | |
1098 | |
1100 | while (defined ($buf = Net::SSLeay::read ($self->{tls}))) { |
1099 | while (defined ($buf = Net::SSLeay::read ($self->{tls}))) { |
1101 | if (length $buf) { |
1100 | if (length $buf) { |
1102 | $self->{rbuf} .= $buf; |
1101 | $self->{rbuf} .= $buf; |
1103 | $self->_drain_rbuf; |
1102 | $self->_drain_rbuf unless $self->{_in_drain}; |
1104 | } else { |
1103 | } else { |
1105 | # let's treat SSL-eof as we treat normal EOF |
1104 | # let's treat SSL-eof as we treat normal EOF |
1106 | $self->{_eof} = 1; |
1105 | $self->{_eof} = 1; |
1107 | $self->_shutdown; |
1106 | $self->_shutdown; |
1108 | return; |
1107 | return; |