org.cybergarage.upnp.ssdp

Class SSDP

java.lang.Object

org.cybergarage.upnp.ssdp.SSDP

public class SSDP
extends Object

Constants and utility methods for Simple Service Discovery Protocol (SSDP).
This class defines SSDP protocol constants including multicast addresses, ports, and utility methods for parsing SSDP cache control headers.

Version:

1.8

Field Summary

Fields

Modifier and Type	Field and Description
static String	ADDRESS Default IPv4 multicast address for SSDP messages
static int	DEFAULT_MSEARCH_MX Default MX (Maximum wait time) for M-SEARCH requests in seconds
static String	IPV6_ADMINISTRATIVE_ADDRESS IPv6 administrative multicast address for SSDP messages
static String	IPV6_GLOBAL_ADDRESS IPv6 global multicast address for SSDP messages
static String	IPV6_LINK_LOCAL_ADDRESS IPv6 link-local multicast address for SSDP messages
static String	IPV6_SITE_LOCAL_ADDRESS IPv6 site-local multicast address for SSDP messages
static String	IPV6_SUBNET_ADDRESS IPv6 subnet-local multicast address for SSDP messages
static int	PORT Default destination port for SSDP multicast messages
static int	RECV_MESSAGE_BUFSIZE Buffer size for receiving SSDP messages in bytes

Constructor Summary

Constructors

Constructor and Description
SSDP()

Method Summary

Modifier and Type	Method and Description
static String	getIPv6Address() Gets the currently configured IPv6 multicast address for SSDP operations.
static int	getLeaseTime(String cacheCont) Extracts the lease time (max-age) from a Cache-Control header string.
static void	setIPv6Address(String addr) Sets the IPv6 multicast address to use for SSDP operations.

Methods inherited from class java.lang.Object

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

Field Detail

ADDRESS

public static final String ADDRESS

Default IPv4 multicast address for SSDP messages

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Constant Field Values

DEFAULT_MSEARCH_MX

public static final int DEFAULT_MSEARCH_MX

Default MX (Maximum wait time) for M-SEARCH requests in seconds

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Constant Field Values

IPV6_ADMINISTRATIVE_ADDRESS

public static final String IPV6_ADMINISTRATIVE_ADDRESS

IPv6 administrative multicast address for SSDP messages

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Constant Field Values

IPV6_GLOBAL_ADDRESS

public static final String IPV6_GLOBAL_ADDRESS

IPv6 global multicast address for SSDP messages

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Constant Field Values

IPV6_LINK_LOCAL_ADDRESS

public static final String IPV6_LINK_LOCAL_ADDRESS

IPv6 link-local multicast address for SSDP messages

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Constant Field Values

IPV6_SITE_LOCAL_ADDRESS

public static final String IPV6_SITE_LOCAL_ADDRESS

IPv6 site-local multicast address for SSDP messages

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Constant Field Values

IPV6_SUBNET_ADDRESS

public static final String IPV6_SUBNET_ADDRESS

IPv6 subnet-local multicast address for SSDP messages

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Constant Field Values

PORT

public static final int PORT

Default destination port for SSDP multicast messages

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Constant Field Values

RECV_MESSAGE_BUFSIZE

public static final int RECV_MESSAGE_BUFSIZE

Buffer size for receiving SSDP messages in bytes

See Also:

Constant Field Values

Constructor Detail

SSDP

public SSDP()

Method Detail

getIPv6Address

public static final String getIPv6Address()

Gets the currently configured IPv6 multicast address for SSDP operations.

Returns:

the IPv6 address being used

getLeaseTime

public static final int getLeaseTime(String cacheCont)

Extracts the lease time (max-age) from a Cache-Control header string. Parses the max-age directive value from SSDP cache control headers.

Parameters:

cacheCont - the Cache-Control header content to parse

Returns:

the lease time in seconds, or 0 if not found or invalid

setIPv6Address

public static final void setIPv6Address(String addr)

Sets the IPv6 multicast address to use for SSDP operations.

Parameters:

addr - the IPv6 address to use