&xferOpen ('SESSION', $clusterHost,"compression", "yes", @sshPort) ||  return &error("couldn't connect to $clusterHost : $xferError");


##</code><code>##

my $connected;
for (my $tries = 1; $tries < 4; $tries++) { 
  print "Attempt $tries to connect\n";    
  $connected = &xferOpen ('SESSION', $clusterHost,"compression", "yes", @sshPort);
  last if $connected;
} 
return $connected ? $success : &error("couldn't connect to $clusterHost : $xferError");


##</code><code>##

my $connected;
my $tries = 1;
do {  print "Attempt $tries to connect\n";    
      $connected = &xferOpen ('SESSION', $clusterHost,"compression", "yes", @sshPort);  
      $tries++; 
   } until $connected or $tries > 3;

##</code><code>##

eval (join '||', ('&xferOpen ("SESSION", $clusterHost,"compression", "yes", @sshPort)') x 3) || return &error("couldn't connect to $clusterHost : $xferError");
return $success;