This utility provides a means to look up IANA registered services either by port or service name. The IANA registered services are embedded in a Map inside the JAR so no external connection is required. Maps are lazily initialized to ensure it's only allocated as used.
Look up service ports by service name:
Set<PortAndProtocol> ports = Helper.servicePorts("http");
Look up a service port by service name and protocol:
PortAndProtocol port = Helper.servicePort("http", "tcp");
Look up a service port by service name (protocol defaults to "tcp"):
PortAndProtocol port = Helper.servicePort("http");
Lookup service names by port and protocol:
Set<String> services = Helper.serviceNames(80, "tcp");
Lookup service names by port (protocol defaults to "tcp"):
Set<String> services = Helper.serviceNames(80);