neilwatson has asked for the wisdom of the Perl Monks concerning the following question:

Greetings,

I have code. 

#!/usr/bin/perl

BEGIN { unshift @INC, "/home/neil/perl5/lib/perl5" }

use strict;
use warnings;
use Socket qw( getaddrinfo getnameinfo );

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I get this error. 

"getaddrinfo" is not exported by the Socket module
 "getnameinfo" is not exported by the Socket module
Can't continue after import errors at /home/neil/bin/ptr line 7.
BEGIN failed--compilation aborted at /home/neil/bin/ptr line 7.

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This is perl 5.10.1. The default installed Socket version is 1.82. I installed a later version of Socket (see BEGIN), v2.0006. Aren't these sub in Socket?

update

I'm not set on this path. My goal is to find a host name from an IP address that may be IPV4 or IPV6. I cannot know ahead of time which IP version might be presented.

Neil Watson
watson-wilson.ca

Replies are listed 'Best First'.
Re: "getaddrinfo" is not exported by the Socket module
by toolic (Bishop) on Sep 29, 2012 at 17:54 UTC
    I see no mention of getaddressinfo in the POD for perl 5.10.1 at http://perldoc.perl.org/5.10.1/Socket.html. You can look at your installed version with: 
    perldoc Socket
perldoc -m Socket

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    However, perl 5.16 (currently on the web) Socket does mention it:

    The entire getaddrinfo() subsystem can be exported using the tag :addrinfo ; this exports the getaddrinfo() and getnameinfo() functions
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Re: "getaddrinfo" is not exported by the Socket module
by syphilis (Archbishop) on Sep 30, 2012 at 05:13 UTC
    BEGIN { unshift @INC, "/home/neil/perl5/lib/perl5" }

    Is the "later version" of Socket.pm located in the /home/neil/perl5/lib/perl5/ directory ?
    I expect it might be in a *sub-directory* of that location. If so, then you'll still be loading the original version of Socket.pm.

    Update: Of the various versions of Socket that I have, version 1.94 is the earliest version that exports getaddrinfo. (I have it with perl-5.14. The versions I have with 5.10.0 and 5.12.0 don't export getaddrinfo.)

    Cheers,
    Rob
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      The later version of Socket I installed is here: /home/neil/perl5/lib/perl5/x86_64-linux-thread-multi/Socket.pm

      Neil Watson
      watson-wilson.ca

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Re: "getaddrinfo" is not exported by the Socket module
by neilwatson (Priest) on Sep 30, 2012 at 16:41 UTC

    Progress. I installed Socket in local lib. I had to do this to load it:

    #!/usr/bin/perl

BEGIN { unshift @INC, "/home/neil/perl5/lib/perl5" }
BEGIN { unshift @INC, "/home/neil/perl5/lib/perl5/x86_64-linux-thread-
+multi" }

use strict;
use warnings;
use Socket qw ( getnameinfo getaddrinfo );

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    If there is a better way I'm all ears. I know I can set a shell environment but, I'm not inclined to trust that once the program is shipped out.

    Neil Watson
    watson-wilson.ca

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