inet::IPv4InterfaceData::HostMulticastGroupData Struct Reference

#include <IPv4InterfaceData.h>

Public Member Functions
	HostMulticastGroupData (IPv4Address multicastGroup)
bool	updateSourceList ()
	Computes the filterMode and sourceList of the interface from the socket reference counts according to RFC3376 3.2. More...

Public Attributes
IPv4Address	multicastGroup
std::map< IPv4Address, int >	includeCounts
std::map< IPv4Address, int >	excludeCounts
int	numOfExcludeModeSockets
IPv4MulticastSourceList	sourceList

Constructor & Destructor Documentation

inet::IPv4InterfaceData::HostMulticastGroupData::HostMulticastGroupData ( IPv4Address  multicastGroup )

inline

            : multicastGroup(multicastGroup), numOfExcludeModeSockets(0) {}

Member Function Documentation

bool inet::IPv4InterfaceData::HostMulticastGroupData::updateSourceList

(

)

Computes the filterMode and sourceList of the interface from the socket reference counts according to RFC3376 3.2.

Returns true if filterMode or sourceList has been changed.

Referenced by inet::IPv4InterfaceData::changeMulticastGroupMembership().

{
    // Filter mode is EXCLUDE if any of the sockets are in EXCLUDE mode, otherwise INCLUDE
    McastSourceFilterMode filterMode = numOfExcludeModeSockets == 0 ? MCAST_INCLUDE_SOURCES : MCAST_EXCLUDE_SOURCES;

    IPv4AddressVector sourceList;
    if (numOfExcludeModeSockets == 0) {
        // If all socket is in INCLUDE mode, then the sourceList is the union of included sources
        for (auto & elem : includeCounts)
            sourceList.push_back(elem.first);
    }
    else {
        // If some socket is in EXCLUDE mode, then the sourceList contains the sources that are
        // excluded by all EXCLUDE mode sockets except if there is a socket including the source.
        for (auto & elem : excludeCounts)
            if (elem.second == numOfExcludeModeSockets && includeCounts.find(elem.first) == includeCounts.end())
                sourceList.push_back(elem.first);

    }

    if (this->sourceList.filterMode != filterMode || this->sourceList.sources != sourceList) {
        this->sourceList.filterMode = filterMode;
        this->sourceList.sources = sourceList;
        return true;
    }
    else
        return false;
}

Member Data Documentation

std::map<IPv4Address, int> inet::IPv4InterfaceData::HostMulticastGroupData::excludeCounts

Referenced by inet::IPv4InterfaceData::changeMulticastGroupMembership().

std::map<IPv4Address, int> inet::IPv4InterfaceData::HostMulticastGroupData::includeCounts

Referenced by inet::IPv4InterfaceData::changeMulticastGroupMembership().

IPv4Address inet::IPv4InterfaceData::HostMulticastGroupData::multicastGroup

int inet::IPv4InterfaceData::HostMulticastGroupData::numOfExcludeModeSockets

Referenced by inet::IPv4InterfaceData::changeMulticastGroupMembership().

IPv4MulticastSourceList inet::IPv4InterfaceData::HostMulticastGroupData::sourceList

Referenced by inet::IPv4InterfaceData::changeMulticastGroupMembership().

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The documentation for this struct was generated from the following files:

• IPv4InterfaceData.h
• IPv4InterfaceData.cc