/**
* Returns the name of a protocol that has the given identifier.
*
* <p>Note that this is not a constant time operation in the number of protocols, although
* typically there are very few protocols defined.
*
* @param pid numeric protocol identifier.
* @return name of the protocol that has the given id. null if no protocols have the given id.
*/
public static String lookupPid(int pid) {
return config.lookupPid(pid);
}
/**
* Returns the numeric protocol identifier of the given protocol name.
*
* @param protname the protocol name.
* @return the numeric protocol identifier associated to the protocol name
*/
public static int lookupPid(String protname) {
return config.lookupPid(protname);
}