IP Multicast
[Network Routines]

Functions

apr_status_t apr_mcast_join (apr_socket_t *sock, apr_sockaddr_t *join, apr_sockaddr_t *iface, apr_sockaddr_t *source)
apr_status_t apr_mcast_leave (apr_socket_t *sock, apr_sockaddr_t *addr, apr_sockaddr_t *iface, apr_sockaddr_t *source)
apr_status_t apr_mcast_hops (apr_socket_t *sock, apr_byte_t ttl)
apr_status_t apr_mcast_loopback (apr_socket_t *sock, apr_byte_t opt)
apr_status_t apr_mcast_interface (apr_socket_t *sock, apr_sockaddr_t *iface)

Function Documentation

apr_status_t apr_mcast_hops ( apr_socket_t sock,
apr_byte_t  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
Remarks:
If the TTL is 0, packets will only be seen by sockets on the local machine, and only when multicast loopback is enabled.
apr_status_t apr_mcast_interface ( apr_socket_t sock,
apr_sockaddr_t 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
apr_status_t apr_mcast_join ( apr_socket_t sock,
apr_sockaddr_t join,
apr_sockaddr_t iface,
apr_sockaddr_t 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)
apr_status_t apr_mcast_leave ( apr_socket_t sock,
apr_sockaddr_t addr,
apr_sockaddr_t iface,
apr_sockaddr_t 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)
apr_status_t apr_mcast_loopback ( apr_socket_t sock,
apr_byte_t  opt 
)

Toggle IP Multicast Loopback

Parameters:
sock The socket to set multicast loopback
opt 0=disable, 1=enable
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