HostUtil (Parent module for everything of interest. 6.2.3 API)

java.lang.Object
- edu.uiuc.ncsa.security.core.util.HostUtil

```
public class HostUtil
extends Object
```
Utility for looking up a host. Mostly a facade to make life easier.
Created by Jeff Gaynor
on 10/22/13 at 11:48 AM

Constructor Summary

Constructors
Constructor Description

HostUtil()

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static String`	`canonicalName(String hostName)`	This is the real host.
`static String`	`reverseLookup(byte[] address)`	The address is either 4 bytes (IpV 4) or 16 bytes (IpV 6).
`static String`	`reverseLookup(String dottedQuadAddress)`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - HostUtil
```
public HostUtil()
```
- Method Detail
  - canonicalName
```
public static String canonicalName(String hostName)
                            throws UnknownHostException
```
    This is the *real* host. The user may set the host property but this should be used internally since it will do any reverse lookups needed.
    
    Returns:
    
    Throws:
    
    UnknownHostException
  - reverseLookup
```
public static String reverseLookup(byte[] address)
                            throws UnknownHostException
```
    The address is either 4 bytes (IpV 4) or 16 bytes (IpV 6). This returns the name associated with the address or throws an exception if no such name is known
    
    Parameters:
    
    address -
    
    Returns:
    
    Throws:
    
    UnknownHostException
  - reverseLookup
```
public static String reverseLookup(String dottedQuadAddress)
                            throws UnknownHostException
```
    Throws:
    
    UnknownHostException