Hello,

I want to control some tv displays using a perl socket. The displays accept a connection on port 1515 a accept a hexadecimal command.

For example:
AA 11 FF 01 01 12

I have found the following code to open a socket and send text.

1 use IO::Socket; 
2 my $sock = new IO::Socket::INET (
3 PeerAddr => '192.168.1.2',
4 PeerPort => '1515', 
5 Proto => 'tcp', 
6 ); 
7 die "Could not create socket: $!\n" unless $sock; 
8 print $sock "Hello there!\n"; 
9 close($sock);

[download]

After doing a bit of research I think I want to use pack to convert the hex string into bytes. I have taken the following from teh pack manual / tutorial 

    my $s = pack( 'H*', $hexcommand );

[download]
Can I use 'print $sock $s' ? If you need any more info just shout, this is my first perl script so bare with me. Thanks, Dan

In reply to Pack hex string and send to socket by djhayman

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.