Net::S...:Handle(3pm) User Contributed Perl Documentation Net::S...:Handle(3pm)
NAME
Net::SSLeay::Handle - Perl module that lets SSL (HTTPS) sockets be
handled as standard file handles.
SYNOPSIS
use Net::SSLeay::Handle qw/shutdown/;
my ($host, $port) = ("localhost", 443);
tie(*SSL, "Net::SSLeay::Handle", $host, $port);
print SSL "GET / HTTP/1.0\r\n";
shutdown(\*SSL, 1);
print while (<SSL>);
close SSL;
DESCRIPTION
Net::SSLeay::Handle allows you to request and receive HTTPS web pages
using "old-fashion" file handles as in:
print SSL "GET / HTTP/1.0\r\n";
and
print while (<SSL>);
If you export the shutdown routine, then the only extra code that you
need to add to your program is the tie function as in:
my $socket;
if ($scheme eq "https") {
tie(*S2, "Net::SSLeay::Handle", $host, $port);
$socket = \*S2;
else {
$socket = Net::SSLeay::Handle->make_socket($host, $port);
}
print $socket $request_headers;
...
FUNCTIONS
shutdown
shutdown(\*SOCKET, $mode)
Calls to the main shutdown() don't work with tied sockets created
with this module. This shutdown should be able to distinquish
between tied and untied sockets and do the right thing.
debug
my $debug = Net::SSLeay::Handle->debug()
Net::SSLeay::Handle->debug(1)
Get/set debugging mode. Always returns the debug value before the
function call. if an additional argument is given the debug option
will be set to this value.
make_socket
my $sock = Net::SSLeay::Handle->make_socket($host, $port);
Creates a socket that is connected to $post using $port. It uses
$Net::SSLeay::proxyhost and proxyport if set and authentificates
itself against this proxy depending on $Net::SSLeay::proxyauth. It
also turns autoflush on for the created socket.
USING EXISTING SOCKETS
One of the motivations for writing this module was to avoid duplicating
socket creation code (which is mostly error handling). The calls to
tie() above where it is passed a $host and $port is provided for
convenience testing. If you already have a socket connected to the
right host and port, S1, then you can do something like:
my $socket \*S1;
if ($scheme eq "https") {
tie(*S2, "Net::SSLeay::Handle", $socket);
$socket = \*S2;
}
my $last_sel = select($socket); $| = 1; select($last_sel);
print $socket $request_headers;
...
Note: As far as I know you must be careful with the globs in the tie()
function. The first parameter must be a glob (*SOMETHING) and the last
parameter must be a reference to a glob (\*SOMETHING_ELSE) or a scaler
that was assigned to a reference to a glob (as in the example above)
Also, the two globs must be different. When I tried to use the same
glob, I got a core dump.
EXPORT
None by default.
You can export the shutdown() function.
It is suggested that you do export shutdown() or use the fully qualified
Net::SSLeay::Handle::shutdown() function to shutdown SSL sockets. It
should be smart enough to distinguish between SSL and non-SSL sockets
and do the right thing.
EXAMPLES
use Net::SSLeay::Handle qw/shutdown/;
my ($host, $port) = ("localhost", 443);
tie(*SSL, "Net::SSLeay::Handle", $host, $port);
print SSL "GET / HTTP/1.0\r\n";
shutdown(\*SSL, 1);
print while (<SSL>);
close SSL;
TODO
Better error handling. Callback routine?
CAVEATS
Tying to a file handle is a little tricky (for me at least).
The first parameter to tie() must be a glob (*SOMETHING) and the last
parameter must be a reference to a glob (\*SOMETHING_ELSE) or a scaler
that was assigned to a reference to a glob ($s = \*SOMETHING_ELSE).
Also, the two globs must be different. When I tried to use the same
glob, I got a core dump.
I was able to associate attributes to globs created by this module (like
*SSL above) by making a hash of hashes keyed by the file head1.
CHANGES
Please see Net-SSLeay-Handle-0.50/Changes file.
BUGS
If you encounter a problem with this module that you believe is a bug,
please create a new issue <https://github.com/radiator-software/p5-net-
ssleay/issues/new> in the Net-SSLeay GitHub repository. Please make sure
your bug report includes the following information:
• the code you are trying to run;
• your operating system name and version;
• the output of "perl -V";
• the version of OpenSSL or LibreSSL you are using.
AUTHOR
Originally written by Jim Bowlin.
Maintained by Sampo Kellomäki between July 2001 and August 2003.
Maintained by Florian Ragwitz between November 2005 and January 2010.
Maintained by Mike McCauley between November 2005 and June 2018.
Maintained by Tuure Vartiainen between June 2018 and July 2018.
Maintained by Chris Novakovic and Heikki Vatiainen since June 2018.
COPYRIGHT
Copyright (c) 2001 Jim Bowlin <jbowlin@linklint.org>
Copyright (c) 2001-2003 Sampo Kellomäki <sampo@iki.fi>
Copyright (c) 2005-2010 Florian Ragwitz <rafl@debian.org>
Copyright (c) 2005-2018 Mike McCauley <mikem@airspayce.com>
Copyright (c) 2018 Tuure Vartiainen <vartiait@radiatorsoftware.com>
Copyright (c) 2018- Chris Novakovic <chris@chrisn.me.uk>
Copyright (c) 2018- Heikki Vatiainen <hvn@radiatorsoftware.com>
All rights reserved.
LICENSE
This module is released under the terms of the Artistic License 2.0. For
details, see the "LICENSE" file distributed with Net-SSLeay's source
code.
SEE ALSO
Net::SSLeay, perl(1), http://openssl.org/
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