kmugglet has asked for the wisdom of the Perl Monks concerning the following question:
I'm trying to send the output of logfile on an NT machine to a TCP client on a Unix machine.
I've spliced the following script together from the O'Reilly Perl cookbook.
can anyone see any glaring mistakes?
Please be gentle , its my first time :-)
I've spliced the following script together from the O'Reilly Perl cookbook.
It works with quick updates, but not if the logfile is updated very rarely. It seems as if the script buffers the message before sending.#!/usr/bin/perl -w require 5.002; use strict; BEGIN { $ENV{PATH} = '/usr/ucb:/bin' } use Socket; use Carp; use IO::File; use IO::Handle; sub logmsg { print "$0 $$: @_ at ", scalar localtime, "\n" } my $port = 8068; my $proto = getprotobyname('tcp'); my $naptime = 1; my $LOGFILE; my $curpos; open ($LOGFILE, 'c:\logfile\log') or die "Can't open logfile: $!"; socket(Server, PF_INET, SOCK_DGRAM, $proto) or die "socket: $!"; setsockopt(Server, SOL_SOCKET, SO_REUSEADDR, pack("l", 1)) or die "setsockopt:$!"; bind(Server, sockaddr_in($port, INADDR_ANY)) or die "bind: $!"; listen(Server,SOMAXCONN) or die "listen: $!"; logmsg "server started on port $port"; my $paddr; $SIG{CHLD} = \&REAPER; for ( ; $paddr = accept(Client,Server); close Client) { my($port,$iaddr) = sockaddr_in($paddr); my $name = gethostbyaddr($iaddr,AF_INET); logmsg "connection from $name [", inet_ntoa($iaddr), "] at port $port"; for (;;) { my $msg= ''; for ($curpos = tell($LOGFILE); <$LOGFILE>; $curpos = tell($LOGFILE)) { readline $LOGFILE; $msg = $_; print Client $msg; } sleep $naptime; seek($LOGFILE, $curpos, 0); } }
can anyone see any glaring mistakes?
Please be gentle , its my first time :-)
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