[ViewVC] Diff of: cvs/AnyEvent/lib/AnyEvent/Handle.pm

Comparing AnyEvent/lib/AnyEvent/Handle.pm (file contents):
Revision 1.77 by root, Sun Jul 27 07:25:39 2008 UTC vs.
Revision 1.85 by root, Thu Aug 21 19:53:19 2008 UTC

 package AnyEvent::Handle;
 no warnings;
-use strict;
+use strict qw(subs vars);
 use AnyEvent ();
 use AnyEvent::Util qw(WSAEWOULDBLOCK);
 use Scalar::Util ();
 use Carp ();
 AnyEvent::Handle - non-blocking I/O on file handles via AnyEvent
 =cut
-our $VERSION = 4.22;
+our $VERSION = 4.232;
 =head1 SYNOPSIS
    use AnyEvent;
    use AnyEvent::Handle;
 This module is a helper module to make it easier to do event-based I/O on
 filehandles. For utility functions for doing non-blocking connects and accepts
 on sockets see L<AnyEvent::Util>.
+The L<AnyEvent::Intro> tutorial contains some well-documented
+AnyEvent::Handle examples.
 In the following, when the documentation refers to of "bytes" then this
 means characters. As sysread and syswrite are used for all I/O, their
 treatment of characters applies to this module as well.
 All callbacks will be invoked with the handle object as their first
 =item fh => $filehandle [MANDATORY]
 The filehandle this L<AnyEvent::Handle> object will operate on.
-NOTE: The filehandle will be set to non-blocking (using
+NOTE: The filehandle will be set to non-blocking mode (using
-AnyEvent::Util::fh_nonblocking).
+C<AnyEvent::Util::fh_nonblocking>) by the constructor and needs to stay in
+that mode.
 =item on_eof => $cb->($handle)
 Set the callback to be called when an end-of-file condition is detected,
 i.e. in the case of a socket, when the other side has closed the
 connection cleanly.
+For sockets, this just means that the other side has stopped sending data,
+you can still try to write data, and, in fact, one can return from the eof
+callback and continue writing data, as only the read part has been shut
+down.
-While not mandatory, it is highly recommended to set an eof callback,
+While not mandatory, it is I<highly> recommended to set an eof callback,
 otherwise you might end up with a closed socket while you are still
 waiting for data.
+If an EOF condition has been detected but no C<on_eof> callback has been
+set, then a fatal error will be raised with C<$!> set to <0>.
 =item on_error => $cb->($handle, $fatal)
 This is the error callback, which is called when, well, some error
 occured, such as not being able to resolve the hostname, failure to
 connect or a read error.
 Some errors are fatal (which is indicated by C<$fatal> being true). On
-fatal errors the handle object will be shut down and will not be
+fatal errors the handle object will be shut down and will not be usable
+(but you are free to look at the current C< ->rbuf >). Examples of fatal
+errors are an EOF condition with active (but unsatisifable) read watchers
+(C<EPIPE>) or I/O errors.
-usable. Non-fatal errors can be retried by simply returning, but it is
+Non-fatal errors can be retried by simply returning, but it is recommended
-recommended to simply ignore this parameter and instead abondon the handle
+to simply ignore this parameter and instead abondon the handle object
-object when this callback is invoked.
+when this callback is invoked. Examples of non-fatal errors are timeouts
+C<ETIMEDOUT>) or badly-formatted data (C<EBADMSG>).
 On callback entrance, the value of C<$!> contains the operating system
 error (or C<ENOSPC>, C<EPIPE>, C<ETIMEDOUT> or C<EBADMSG>).
 While not mandatory, it is I<highly> recommended to set this callback, as
 This will not work for partial TLS data that could not yet been
 encoded. This data will be lost.
 =item tls => "accept" | "connect" | Net::SSLeay::SSL object
-When this parameter is given, it enables TLS (SSL) mode, that means it
+When this parameter is given, it enables TLS (SSL) mode, that means
-will start making tls handshake and will transparently encrypt/decrypt
+AnyEvent will start a TLS handshake and will transparently encrypt/decrypt
 data.
 TLS mode requires Net::SSLeay to be installed (it will be loaded
 automatically when you try to create a TLS handle).
-For the TLS server side, use C<accept>, and for the TLS client side of a
+Unlike TCP, TLS has a server and client side: for the TLS server side, use
-connection, use C<connect> mode.
+C<accept>, and for the TLS client side of a connection, use C<connect>
+mode.
 You can also provide your own TLS connection object, but you have
 to make sure that you call either C<Net::SSLeay::set_connect_state>
 or C<Net::SSLeay::set_accept_state> on it before you pass it to
 AnyEvent::Handle.
-See the C<starttls> method if you need to start TLS negotiation later.
+See the C<starttls> method for when need to start TLS negotiation later.
 =item tls_ctx => $ssl_ctx
 Use the given Net::SSLeay::CTX object to create the new TLS connection
 (unless a connection object was specified directly). If this parameter is
    delete $self->{_rw};
    delete $self->{_ww};
    delete $self->{fh};
    $self->stoptls;
+   delete $self->{on_read};
+   delete $self->{_queue};
 }
 sub _error {
    my ($self, $errno, $fatal) = @_;
    if (
       defined $self->{rbuf_max}
       && $self->{rbuf_max} < length $self->{rbuf}
    ) {
-      return $self->_error (&Errno::ENOSPC, 1);
+      $self->_error (&Errno::ENOSPC, 1), return;
    }
    while () {
-      no strict 'refs';
       my $len = length $self->{rbuf};
       if (my $cb = shift @{ $self->{_queue} }) {
          unless ($cb->($self)) {
             if ($self->{_eof}) {
                # no progress can be made (not enough data and no data forthcoming)
-               $self->_error (&Errno::EPIPE, 1), last;
+               $self->_error (&Errno::EPIPE, 1), return;
             }
             unshift @{ $self->{_queue} }, $cb;
             last;
          }
             && !@{ $self->{_queue} }     # and the queue is still empty
             && $self->{on_read}          # but we still have on_read
          ) {
             # no further data will arrive
             # so no progress can be made
-            $self->_error (&Errno::EPIPE, 1), last
+            $self->_error (&Errno::EPIPE, 1), return
                if $self->{_eof};
             last; # more data might arrive
          }
       } else {
          delete $self->{_rw};
          last;
       }
    }
+   if ($self->{_eof}) {
+      if ($self->{on_eof}) {
-   $self->{on_eof}($self)
+         $self->{on_eof}($self)
-      if $self->{_eof} && $self->{on_eof};
+      } else {
+         $self->_error (0, 1);
+      }
+   }
    # may need to restart read watcher
    unless ($self->{_rw}) {
       $self->start_read
          if $self->{on_read} || @{ $self->{_queue} };
       $len <= length $_[0]{rbuf} or return;
       $cb->($_[0], substr $_[0]{rbuf}, 0, $len, "");
       1
    }
 };
-# compatibility with older API
-sub push_read_chunk {
-   $_[0]->push_read (chunk => $_[1], $_[2]);
-}
-sub unshift_read_chunk {
-   $_[0]->unshift_read (chunk => $_[1], $_[2]);
-}
 =item line => [$eol, ]$cb->($handle, $line, $eol)
 The callback will be called only once a full line (including the end of
 line marker, C<$eol>) has been read. This line (excluding the end of line
          $cb->($_[0], $1, $2);
          1
       }
    }
 };
-# compatibility with older API
-sub push_read_line {
-   my $self = shift;
-   $self->push_read (line => @_);
-}
-sub unshift_read_line {
-   my $self = shift;
-   $self->unshift_read (line => @_);
-}
 =item regex => $accept[, $reject[, $skip], $cb->($handle, $data)
 Makes a regex match against the regex object C<$accept> and returns
 everything up to and including the match.

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Comparing AnyEvent/lib/AnyEvent/Handle.pm (file contents): Revision 1.77 by root, Sun Jul 27 07:25:39 2008 UTC vs. Revision 1.85 by root, Thu Aug 21 19:53:19 2008 UTC

Diff Legend

Comparing AnyEvent/lib/AnyEvent/Handle.pm (file contents):
Revision 1.77 by root, Sun Jul 27 07:25:39 2008 UTC vs.
Revision 1.85 by root, Thu Aug 21 19:53:19 2008 UTC