java.lang.Object
org.cybergarage.upnp.ssdp.SSDP
public class SSDPextends 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.

  • Field Details

    • PORT

      public static final int PORT
      Default destination port for SSDP multicast messages
      See Also:

    • ADDRESS

      public static final String ADDRESS
      Default IPv4 multicast address for SSDP messages
      See Also:

    • IPV6_SUBNET_ADDRESS

      public static final String IPV6_SUBNET_ADDRESS
      IPv6 subnet-local multicast address for SSDP messages
      See Also:

    • IPV6_ADMINISTRATIVE_ADDRESS

      public static final String IPV6_ADMINISTRATIVE_ADDRESS
      IPv6 administrative multicast address for SSDP messages
      See Also:

    • IPV6_SITE_LOCAL_ADDRESS

      public static final String IPV6_SITE_LOCAL_ADDRESS
      IPv6 site-local multicast address for SSDP messages
      See Also:

    • IPV6_GLOBAL_ADDRESS

      public static final String IPV6_GLOBAL_ADDRESS
      IPv6 global multicast address for SSDP messages
      See Also:

    • IPV6_ADDRESS

      private static String IPV6_ADDRESS
      The link-local IPv6 address used for SSDP, resolved once

    • DEFAULT_MSEARCH_MX

      public static final int DEFAULT_MSEARCH_MX
      Default MX (Maximum wait time) for M-SEARCH requests in seconds
      See Also:

    • RECV_MESSAGE_BUFSIZE

      public static final int RECV_MESSAGE_BUFSIZE
      Buffer size for receiving SSDP messages in bytes
      See Also:

  • Constructor Details

    • SSDP

      public SSDP()
      Every multicast constant and the cache-control parsers below are static, so an instance carries nothing.

  • Method Details

    • 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

    • 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