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.\" ========================================================================
.\"
.IX Title "Net::SSLeay::Handle 3"
.TH Net::SSLeay::Handle 3 "2007-10-16" "perl v5.14.3" "User Contributed Perl Documentation"
.\" For nroff, turn off justification. Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "NAME"
Net::SSLeay::Handle \- Perl module that lets SSL (HTTPS) sockets be
handled as standard file handles.
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 2
\& use Net::SSLeay::Handle qw/shutdown/;
\& my ($host, $port) = ("localhost", 443);
\&
\& tie(*SSL, "Net::SSLeay::Handle", $host, $port);
\&
\& print SSL "GET / HTTP/1.0\er\en";
\& shutdown(\e*SSL, 1);
\& print while (<SSL>);
\& close SSL;
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
Net::SSLeay::Handle allows you to request and receive \s-1HTTPS\s0 web pages
using \*(L"old-fashion\*(R" file handles as in:
.PP
.Vb 1
\& print SSL "GET / HTTP/1.0\er\en";
.Ve
.PP
and
.PP
.Vb 1
\& print while (<SSL>);
.Ve
.PP
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:
.PP
.Vb 9
\& my $socket;
\& if ($scheme eq "https") {
\& tie(*S2, "Net::SSLeay::Handle", $host, $port);
\& $socket = \e*S2;
\& else {
\& $socket = Net::SSLeay::Handle\->make_socket($host, $port);
\& }
\& print $socket $request_headers;
\& ...
.Ve
.SH "FUNCTIONS"
.IX Header "FUNCTIONS"
.IP "shutdown" 4
.IX Item "shutdown"
.Vb 1
\& shutdown(\e*SOCKET, $mode)
.Ve
.Sp
Calls to the main \fIshutdown()\fR 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.
.IP "debug" 4
.IX Item "debug"
.Vb 2
\& my $debug = Net::SSLeay::Handle\->debug()
\& Net::SSLeay::Handle\->debug(1)
.Ve
.Sp
Get/set debuging 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.
.IP "make_socket" 4
.IX Item "make_socket"
.Vb 1
\& my $sock = Net::SSLeay::Handle\->make_socket($host, $port);
.Ve
.Sp
Creates a socket that is connected to \f(CW$post\fR using \f(CW$port\fR. It uses
\&\f(CW$Net::SSLeay::proxyhost\fR and proxyport if set and authentificates itself against
this proxy depending on \f(CW$Net::SSLeay::proxyauth\fR. It also turns autoflush on for
the created socket.
.SS "\s-1USING\s0 \s-1EXISTING\s0 \s-1SOCKETS\s0"
.IX Subsection "USING EXISTING SOCKETS"
One of the motivations for writing this module was to avoid
duplicating socket creation code (which is mostly error handling).
The calls to \fItie()\fR above where it is passed a \f(CW$host\fR and \f(CW$port\fR 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:
.PP
.Vb 8
\& my $socket \e*S1;
\& if ($scheme eq "https") {
\& tie(*S2, "Net::SSLeay::Handle", $socket);
\& $socket = \e*S2;
\& }
\& my $last_sel = select($socket); $| = 1; select($last_sel);
\& print $socket $request_headers;
\& ...
.Ve
.PP
Note: As far as I know you must be careful with the globs in the \fItie()\fR
function. The first parameter must be a glob (*SOMETHING) and the
last parameter must be a reference to a glob (\e*SOMETHING_ELSE) or a
scaler that was assigned to a reference to a glob (as in the example
above)
.PP
Also, the two globs must be different. When I tried to use the same
glob, I got a core dump.
.SS "\s-1EXPORT\s0"
.IX Subsection "EXPORT"
None by default.
.PP
You can export the \fIshutdown()\fR function.
.PP
It is suggested that you do export \fIshutdown()\fR or use the fully
qualified \fINet::SSLeay::Handle::shutdown()\fR function to shutdown \s-1SSL\s0
sockets. It should be smart enough to distinguish between \s-1SSL\s0 and
non-SSL sockets and do the right thing.
.SH "EXAMPLES"
.IX Header "EXAMPLES"
.Vb 2
\& use Net::SSLeay::Handle qw/shutdown/;
\& my ($host, $port) = ("localhost", 443);
\&
\& tie(*SSL, "Net::SSLeay::Handle", $host, $port);
\&
\& print SSL "GET / HTTP/1.0\er\en";
\& shutdown(\e*SSL, 1);
\& print while (<SSL>);
\& close SSL;
.Ve
.SH "TODO"
.IX Header "TODO"
Better error handling. Callback routine?
.SH "CAVEATS"
.IX Header "CAVEATS"
Tying to a file handle is a little tricky (for me at least).
.PP
The first parameter to \fItie()\fR must be a glob (*SOMETHING) and the last
parameter must be a reference to a glob (\e*SOMETHING_ELSE) or a scaler
that was assigned to a reference to a glob ($s = \e*SOMETHING_ELSE).
Also, the two globs must be different. When I tried to use the same
glob, I got a core dump.
.PP
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.
.PP
Support for old perls may not be 100%. If in trouble try 5.6.0 or
newer.
.SH "CHANGES"
.IX Header "CHANGES"
Please see Net\-SSLeay\-Handle\-0.50/Changes file.
.SH "KNOWN BUGS"
.IX Header "KNOWN BUGS"
If you let this module construct sockets for you with Perl versions
below v.5.6 then there is a slight memory leak. Other upgrade your
Perl, or create the sockets yourself. The leak was created to let
these older versions of Perl access more than one Handle at a time.
.SH "AUTHOR"
.IX Header "AUTHOR"
Jim Bowlin jbowlin@linklint.org
.SH "SEE ALSO"
.IX Header "SEE ALSO"
Net::SSLeay, \fIperl\fR\|(1), http://openssl.org/