#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

◆ HostMulticastGroupData()

inet::Ipv4InterfaceData::HostMulticastGroupData::HostMulticastGroupData ( Ipv4Address multicastGroup )

inline

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

Member Function Documentation

◆ updateSourceList()

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.

 {
     // 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 && !containsKey(includeCounts, elem.first))
                 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;
 }