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  1. or download this
    $socket = socketpair($child_fh, $parent_fh, .....);
$child_fh  -> autoflush();
$parent_fh -> autoflush();
$pid = fork();
....
  2. or download this
    while(1)
   { my %INFO = ();
...
     print $parent_fh ":MSG:${dumped}:DONE:\n";
     sleep 10;
   }
  3. or download this
    state $collected;
$num = read($child_fh, $buf, 1e6);
...
          $collected = "";
        }
   }