use Net::Bluetooth;
use strict;
use warnings;

use Time::HiRes qw(sleep);
use Data::Dumper;

#my $printer_addr='00:01:90:AE:B5:9C'; # Epson
my $printer_addr='68:08:09:14:B7:4F'; # MXTP-100

#### Could retry here instead of exiting.
die "BT GPS not found." unless(defined($printer_addr));

#### Search for the serial service (0x1101) on my printer
my @sdp_array = sdp_search($printer_addr, "1101", "");
die "No service records found" unless(@sdp_array);
                                                                                                               
my $port = 0;
#### Loop through all the service records.
#### foreach service record ....
print Dumper(@sdp_array);
foreach my $rec_ref (@sdp_array) {
    #### Get the RFCOMM port number for the service.
    if(exists($rec_ref->{RFCOMM})) {
        $port = $rec_ref->{RFCOMM}; 
        last;
    }
}

die "No RFCOMM record found." unless($port > 0);

print "BT Serial port found $printer_addr  $port \n";

my $obj = Net::Bluetooth->newsocket("RFCOMM");
die "socket error: $!\n" unless(defined($obj));
die "connect error: $!\n" if($obj->connect($printer_addr, $port) != 0);

#### Create a Perl filehandle for reading and writing.
*SERVER = $obj->perlfh();
SERVER->autoflush(1);

my @lines = <DATA>;
foreach my $line (@lines) {
    #print $line;
    #print SERVER $line;
    SERVER->write($line);
    #sleep(0.1);
}
for(1..8) {
    SERVER->write("\n");
}

__DATA__
This was a triumph.
I'm making a note here:
huge success.

It's hard to overstate
My satisfaction.