org.apache.tomcat.jni
Class Multicast

java.lang.Object
  org.apache.tomcat.jni.Multicast

public class Multicast
extends java.lang.Object

Multicast

Author:

Mladen Turk

Multicast

public Multicast()

join

public static int join(long sock,
                       long join,
                       long iface,
                       long source)

Join a Multicast Group

Parameters:

sock - The socket to join a multicast group

join - The address of the multicast group to join

iface - Address of the interface to use. If NULL is passed, the default multicast interface will be used. (OS Dependent)

source - Source Address to accept transmissions from (non-NULL implies Source-Specific Multicast)

leave

public static int leave(long sock,
                        long addr,
                        long iface,
                        long source)

Leave a Multicast Group. All arguments must be the same as apr_mcast_join.

Parameters:

sock - The socket to leave a multicast group

addr - The address of the multicast group to leave

iface - Address of the interface to use. If NULL is passed, the default multicast interface will be used. (OS Dependent)

source - Source Address to accept transmissions from (non-NULL implies Source-Specific Multicast)

hops

public static int hops(long sock,
                       int ttl)

Set the Multicast Time to Live (ttl) for a multicast transmission.

Parameters:

sock - The socket to set the multicast ttl

ttl - Time to live to Assign. 0-255, default=1
Remark : If the TTL is 0, packets will only be seen by sockets on the local machine, and only when multicast loopback is enabled.

loopback

public static int loopback(long sock,
                           boolean opt)

Toggle IP Multicast Loopback

Parameters:

sock - The socket to set multicast loopback

opt - false=disable, true=enable

ointerface

public static int ointerface(long sock,
                             long iface)

Set the Interface to be used for outgoing Multicast Transmissions.

Parameters:

sock - The socket to set the multicast interface on

iface - Address of the interface to use for Multicast