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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 = 4.331; |
19 | our $VERSION = 4.42; |
20 | |
20 | |
21 | =head1 SYNOPSIS |
21 | =head1 SYNOPSIS |
22 | |
22 | |
23 | use AnyEvent; |
23 | use AnyEvent; |
24 | use AnyEvent::Handle; |
24 | use AnyEvent::Handle; |
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127 | and no read request is in the queue (unlike read queue callbacks, this |
127 | and no read request is in the queue (unlike read queue callbacks, this |
128 | callback will only be called when at least one octet of data is in the |
128 | callback will only be called when at least one octet of data is in the |
129 | read buffer). |
129 | read buffer). |
130 | |
130 | |
131 | To access (and remove data from) the read buffer, use the C<< ->rbuf >> |
131 | To access (and remove data from) the read buffer, use the C<< ->rbuf >> |
132 | method or access the C<$handle->{rbuf}> member directly. |
132 | method or access the C<$handle->{rbuf}> member directly. Note that you |
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133 | must not enlarge or modify the read buffer, you can only remove data at |
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134 | the beginning from it. |
133 | |
135 | |
134 | When an EOF condition is detected then AnyEvent::Handle will first try to |
136 | When an EOF condition is detected then AnyEvent::Handle will first try to |
135 | feed all the remaining data to the queued callbacks and C<on_read> before |
137 | feed all the remaining data to the queued callbacks and C<on_read> before |
136 | calling the C<on_eof> callback. If no progress can be made, then a fatal |
138 | calling the C<on_eof> callback. If no progress can be made, then a fatal |
137 | error will be raised (with C<$!> set to C<EPIPE>). |
139 | error will be raised (with C<$!> set to C<EPIPE>). |
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767 | ) { |
769 | ) { |
768 | $self->_error (&Errno::ENOSPC, 1), return; |
770 | $self->_error (&Errno::ENOSPC, 1), return; |
769 | } |
771 | } |
770 | |
772 | |
771 | while () { |
773 | while () { |
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774 | # we need to use a separate tls read buffer, as we must not receive data while |
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775 | # we are draining the buffer, and this can only happen with TLS. |
772 | $self->{rbuf} .= delete $self->{tls_rbuf} if exists $self->{tls_rbuf};#d# |
776 | $self->{rbuf} .= delete $self->{_tls_rbuf} if exists $self->{_tls_rbuf}; |
773 | |
777 | |
774 | my $len = length $self->{rbuf}; |
778 | my $len = length $self->{rbuf}; |
775 | |
779 | |
776 | if (my $cb = shift @{ $self->{_queue} }) { |
780 | if (my $cb = shift @{ $self->{_queue} }) { |
777 | unless ($cb->($self)) { |
781 | unless ($cb->($self)) { |
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839 | |
843 | |
840 | =item $handle->rbuf |
844 | =item $handle->rbuf |
841 | |
845 | |
842 | Returns the read buffer (as a modifiable lvalue). |
846 | Returns the read buffer (as a modifiable lvalue). |
843 | |
847 | |
844 | You can access the read buffer directly as the C<< ->{rbuf} >> member, if |
848 | You can access the read buffer directly as the C<< ->{rbuf} >> |
845 | you want. |
849 | member, if you want. However, the only operation allowed on the |
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850 | read buffer (apart from looking at it) is removing data from its |
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851 | beginning. Otherwise modifying or appending to it is not allowed and will |
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852 | lead to hard-to-track-down bugs. |
846 | |
853 | |
847 | NOTE: The read buffer should only be used or modified if the C<on_read>, |
854 | NOTE: The read buffer should only be used or modified if the C<on_read>, |
848 | C<push_read> or C<unshift_read> methods are used. The other read methods |
855 | C<push_read> or C<unshift_read> methods are used. The other read methods |
849 | automatically manage the read buffer. |
856 | automatically manage the read buffer. |
850 | |
857 | |
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1345 | delete $self->{_rw}; |
1352 | delete $self->{_rw}; |
1346 | $self->{_eof} = 1; |
1353 | $self->{_eof} = 1; |
1347 | &_freetls; |
1354 | &_freetls; |
1348 | } |
1355 | } |
1349 | |
1356 | |
1350 | $self->{tls_rbuf} .= $tmp;#d# |
1357 | $self->{_tls_rbuf} .= $tmp; |
1351 | $self->_drain_rbuf unless $self->{_in_drain}; |
1358 | $self->_drain_rbuf unless $self->{_in_drain}; |
1352 | $self->{tls} or return; # tls session might have gone away in callback |
1359 | $self->{tls} or return; # tls session might have gone away in callback |
1353 | } |
1360 | } |
1354 | |
1361 | |
1355 | $tmp = Net::SSLeay::get_error ($self->{tls}, -1); |
1362 | $tmp = Net::SSLeay::get_error ($self->{tls}, -1); |
1356 | |
1363 | |
1357 | if ($tmp != Net::SSLeay::ERROR_WANT_READ ()) { |
1364 | if ($tmp != Net::SSLeay::ERROR_WANT_READ ()) { |
1358 | if ($tmp == Net::SSLeay::ERROR_SYSCALL ()) { |
1365 | if ($tmp == Net::SSLeay::ERROR_SYSCALL ()) { |
1359 | return $self->_error ($!, 1); |
1366 | return $self->_error ($!, 1); |
1360 | } elsif ($tmp == Net::SSLeay::ERROR_SSL ()) { |
1367 | } elsif ($tmp == Net::SSLeay::ERROR_SSL ()) { |
1361 | return $self->_error (&Errno::EIO, 1); |
1368 | return $self->_error (&Errno::EIO, 1); |
1362 | } |
1369 | } |
1363 | |
1370 | |
1364 | # all other errors are fine for our purposes |
1371 | # all other errors are fine for our purposes |
1365 | } |
1372 | } |
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1466 | |
1473 | |
1467 | delete @$self{qw(_rbio _wbio _tls_wbuf)}; |
1474 | delete @$self{qw(_rbio _wbio _tls_wbuf)}; |
1468 | } |
1475 | } |
1469 | |
1476 | |
1470 | sub DESTROY { |
1477 | sub DESTROY { |
1471 | my $self = shift; |
1478 | my ($self) = @_; |
1472 | |
1479 | |
1473 | &_freetls; |
1480 | &_freetls; |
1474 | |
1481 | |
1475 | my $linger = exists $self->{linger} ? $self->{linger} : 3600; |
1482 | my $linger = exists $self->{linger} ? $self->{linger} : 3600; |
1476 | |
1483 | |