Control info for letting an UDP socket join multicast groups. To set the option, send a message to the Udp module with kind=UDP_C_SETOPTION and an and instance of this control info class attached.

The address-interfaceId pairs are passed as two separate arrays. When there are less interfaceIds than multicast addresses, then -1 is assumed (meaning join on all interfaces).

See also: UdpCommandCode

Extends

Name	Type	Description
UdpSetOptionCommand	(unknown -- not in documented files)

Fields

Name	Type	Description
optionCode
multicastAddr	L3Address[]
interfaceId	int[]

Source code

//
// Control info for letting an UDP socket join multicast groups.
// To set the option, send a message to the ~Udp module with kind=UDP_C_SETOPTION
// and an and instance of this control info class attached.
//
// The address-interfaceId pairs are passed as two separate arrays.
// When there are less interfaceIds than multicast addresses,
// then -1 is assumed (meaning join on all interfaces).
//
// @see ~UdpCommandCode
//
class UdpJoinMulticastGroupsCommand extends UdpSetOptionCommand
{
    optionCode = UDP_C_SETOPTION_JOIN_MCAST_GRP;
    L3Address multicastAddr[];
    int interfaceId[];
}

File: src/inet/transportlayer/contract/udp/UdpControlInfo.msg

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