I would suspect a proper answer might be found in the Unix Socket FAQ. Yes, I know it's Unix. Yes, I know the examples are given in C. The important thing is that sockets in Perl are remarkably similar.

Question 4.13 appears to give an applicable answer.

In reply to RE: Re: Echo off in IO::Sockets by chromatic
in thread Echo off in IO::Sockets by GoRN

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