} catch (Exception ex) {
System.err.println("Invalid multicast address - exiting!");
System.exit(0);
}
UnreliableUdpMulticast reliabilityService=null;
Transport rtcpTransport=null;
try {
reliabilityService=new UnreliableUdpMulticast(group, port, ttl, 5000000, 10000);
rtcpTransport = new IPMCTransport(group, port+1, ttl, 5000000);
} catch (Exception ex) {
System.out.println("Could not create Transport and reliability service instances - exiting!");
System.exit(0);
}