After upgrading from Debian Lenny to Squeeze, I got my application exiting with this error:

Bad arg length for Socket::inet_ntoa, length is 16, should be 4 at /app/lib/HTTP/Daemon.pm line 48

The offending line is from HTTP/Daemon.pm is:

$url .= gethostbyaddr($addr, AF_INET) || inet_ntoa($addr);

$addr is returned by $self->sockaddr, and since HTTP::Daemon does not override this method, sockaddr() comes from its parent, IO::Socket::INET. From the number of bytes I'm guessing this is a IPv6/IPv4 thingy? If I print unpack("h*", $addr), it's just a bunch of \x00 though...

Anyway, I'm placing a workaround like this before line 48:

        if (length($addr) == 16) { $addr = substr($addr, 12) }

My app now runs as usual, but I'm sure this is not proper. Any insights on why this is happening and how to properly solve this? Thanks.

In reply to IO::Socket::INET's sockaddr() returns 16 byte instead of 4, Socket::inet_ntoa() complains by Anonymous Monk

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.