org.cybergarage.upnp.device

Class USN

java.lang.Object

org.cybergarage.upnp.device.USN

public class USN
extends Object

Utility class for SSDP USN (Unique Service Name) header values and parsing.

This class provides constants and utility methods for handling USN header used in SSDP messages. The USN header provides a unique identifier for devices and services in UPnP networks.

Key features:

• Root device USN validation
• UDN (Unique Device Name) extraction
• USN parsing and manipulation
• UTF-8 encoding support
• Null-safe value handling

This class is used by SSDP components to parse and validate USN headers in discovery and advertisement messages, enabling proper device identification and service differentiation in UPnP networks.

Field Summary

Fields

Modifier and Type	Field and Description
static String	ROOTDEVICE

Constructor Summary

Constructors

Constructor and Description
USN()

Method Summary

Modifier and Type	Method and Description
static String	getUDN(String usnValue)
static boolean	isRootDevice(String usnValue)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

ROOTDEVICE

public static final String ROOTDEVICE

See Also:

Constant Field Values

Constructor Detail

USN

public USN()

Method Detail

getUDN

public static final String getUDN(String usnValue)

isRootDevice

public static final boolean isRootDevice(String usnValue)