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pjm2 |
1.1 |
#!/usr/bin/perl -w |
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# perl host program, pjm2@ukc.ac.uk |
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# this is not a full host. |
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# development was halted as perl is unable |
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# to send udp packets from raptor. |
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use strict; |
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use Socket; |
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use Sys::Hostname; |
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$| = 1; |
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my ($them) = $ARGV[0]; |
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my ($port) = $ARGV[1]; |
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$them = 'localhost' unless $them; |
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$port = 4589 unless $port; |
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my($AF_INET) = 2; |
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my ($SOCK_DGRAM) = 2; |
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my($hostname); |
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chop($hostname = `hostname`); |
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my($name, $aliases, $proto, $type, $len, $thisaddr, $thataddr); |
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($name, $aliases, $proto) = getprotobyname('udp'); |
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($name, $aliases, $port) = getservbyname($port, 'udp') unless $port =~ /^\d+$/; |
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($name, $aliases, $type, $len, $thisaddr) = gethostbyname($hostname); |
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($name, $aliases, $type, $len, $thataddr) = gethostbyname($them); |
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my($sockaddr) = 'S n a4 x8'; |
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my $this = pack($sockaddr, $AF_INET, 0, $thisaddr); |
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my $that = pack($sockaddr, $AF_INET, $port, $thataddr); |
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if (socket(S, $AF_INET, $SOCK_DGRAM, $proto)) { |
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print "Socket okay!\n"; |
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} |
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else { |
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die $!; |
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} |
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if (bind(S, $this)) { |
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print "Bind okay!\n"; |
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} |
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else { |
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die $!; |
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} |
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printf "%-12s %8s %s\n", "localhost", 0, scalar localtime time; |
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exit 0; |
