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Why doesn't my sockets program work under System V (Solaris)? What does the error message "Protocol not supported" mean?

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Why doesn't my sockets program work under System V (Solaris)? What does the error message "Protocol not supported" mean?

Some Sys-V based systems, notably Solaris 2.X, redefined some of the standard socket constants. Since these were constant across all architectures, they were often hardwired into perl code. The proper way to deal with this is to ``use Socket'' to get the correct values.

Note that even though SunOS and Solaris are binary compatible, these values are different. Go figure.

Source: Perl FAQ: System Interaction
Copyright: Copyright (c) 1997 Tom Christiansen and Nathan Torkington.

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