Net::SSLeay::Handle(3)User Contributed Perl DocumentatioNet::SSLeay::Handle(3)
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 report it in one of the following ways:
o create a new issue <https://github.com/radiator-software/p5-net-
ssleay/issues/new> under the Net-SSLeay GitHub project at
<https://github.com/radiator-software/p5-net-ssleay>;;
o open a ticket <https://rt.cpan.org/Ticket/Create.html?Queue=Net-
SSLeay> using the CPAN RT bug tracker's web interface at
<https://rt.cpan.org/Dist/Display.html?Queue=Net-SSLeay>;;
o send an email to the CPAN RT bug tracker at
bug-Net-SSLeay AT rt.org <mailto:bug-Net-SSLeay AT rt.org>.
Please make sure your bug report includes the following information:
o the code you are trying to run;
o your operating system name and version;
o the output of "perl -V";
o the version of OpenSSL or LibreSSL you are using.
AUTHOR
Originally written by Jim Bowlin.
Maintained by Sampo Kellomaki 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 Chris Novakovic, Tuure Vartiainen and Heikki Vatiainen
since June 2018.
COPYRIGHT
Copyright (c) 2001 Jim Bowlin <jbowlin AT linklint.org>
Copyright (c) 2001-2003 Sampo Kellomaki <sampo AT iki.fi>
Copyright (c) 2005-2010 Florian Ragwitz <rafl AT debian.org>
Copyright (c) 2005-2018 Mike McCauley <mikem AT airspayce.com>
Copyright (c) 2018- Chris Novakovic <chris AT chrisn.uk>
Copyright (c) 2018- Tuure Vartiainen <vartiait AT radiatorsoftware.com>
Copyright (c) 2018- Heikki Vatiainen <hvn AT 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/
perl v5.26.3 2019-05-10 Net::SSLeay::Handle(3)
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