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27 lines
689 B
Perl
27 lines
689 B
Perl
#!/usr/bin/perl -T
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#Usage: timeserver [port number]
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use strict;
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use warnings;
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$port=9876;
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$AF_INET=2;
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$SOCK_STREAM = 1;
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$sockaddr = 'S n a4 x8';
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($name,$aliases,$proto)=getprotobyname('tcp');
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if($port !~ /^\d+$/){
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($name, $aliases, $port)=getservbyport($port,'tcp');
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}
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print "Port = $port\n";
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$this = pack($sockaddr, $AF_INET, $port, "\0\0\0\0");
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select(COMM_SOCK); $| = 1; select (STDOUT);
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socket(R_SOCKET, $AF_INET, $SOCK_STREAM, $proto ) ||die "socket: $!\n";
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bind(R_SOCKET, $this) || die "bind: $!\n";
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listen(R_SOCKET, 5) || die "connect: $!\n";
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while(1){
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accept(COMM_SOCK, R_SOCKET) || die "$!\n";
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$now = time;
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print COMM_SOCK $now;
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} |