inet::HostAutoConfigurator Class Reference

HostAutoConfigurator automatically assigns IP addresses and sets up routing table. More...

#include <HostAutoConfigurator.h>

Inheritance diagram for inet::HostAutoConfigurator:

Public Member Functions
virtual void	initialize (int stage) override
virtual void	finish () override
virtual int	numInitStages () const override
virtual void	handleMessage (cMessage *msg) override

Protected Member Functions
void	setupNetworkLayer ()

Detailed Description

HostAutoConfigurator automatically assigns IP addresses and sets up routing table.

Author

Christoph Sommer

Member Function Documentation

void inet::HostAutoConfigurator::finish ( )

overridevirtual

{
}

void inet::HostAutoConfigurator::handleMessage ( cMessage *  msg )

overridevirtual

{
}

void inet::HostAutoConfigurator::initialize ( int  stage )

overridevirtual

{
    cSimpleModule::initialize(stage);

    if (stage == INITSTAGE_NETWORK_LAYER_2) {
        setupNetworkLayer();
    }
}

virtual int inet::HostAutoConfigurator::numInitStages ( ) const

inlineoverridevirtual

{ return NUM_INIT_STAGES; }

void inet::HostAutoConfigurator::setupNetworkLayer ( )

protected

Referenced by initialize().

{
    EV_INFO << "host auto configuration started" << std::endl;

    std::string interfaces = par("interfaces").stringValue();
    IPv4Address addressBase = IPv4Address(par("addressBase").stringValue());
    IPv4Address netmask = IPv4Address(par("netmask").stringValue());
    std::string mcastGroups = par("mcastGroups").stringValue();

    // get our host module
    cModule *host = getContainingNode(this);

    IPv4Address myAddress = IPv4Address(addressBase.getInt() + uint32(host->getId()));

    // address test
    if (!IPv4Address::maskedAddrAreEqual(myAddress, addressBase, netmask))
        throw cRuntimeError("Generated IP address is out of specified address range");

    // get our routing table
    IIPv4RoutingTable *routingTable = L3AddressResolver().routingTableOf(host);
    if (!routingTable)
        throw cRuntimeError("No routing table found");

    // get our interface table
    IInterfaceTable *ift = L3AddressResolver().interfaceTableOf(host);
    if (!ift)
        throw cRuntimeError("No interface table found");

    // look at all interface table entries
    cStringTokenizer interfaceTokenizer(interfaces.c_str());
    const char *ifname;
    while ((ifname = interfaceTokenizer.nextToken()) != nullptr) {
        InterfaceEntry *ie = ift->getInterfaceByName(ifname);
        if (!ie)
            throw cRuntimeError("No such interface '%s'", ifname);

        // assign IP Address to all connected interfaces
        if (ie->isLoopback()) {
            EV_INFO << "interface " << ifname << " skipped (is loopback)" << std::endl;
            continue;
        }

        EV_INFO << "interface " << ifname << " gets " << myAddress.str() << "/" << netmask.str() << std::endl;

        ie->ipv4Data()->setIPAddress(myAddress);
        ie->ipv4Data()->setNetmask(netmask);
        ie->setBroadcast(true);

        // associate interface with default multicast groups
        ie->ipv4Data()->joinMulticastGroup(IPv4Address::ALL_HOSTS_MCAST);
        ie->ipv4Data()->joinMulticastGroup(IPv4Address::ALL_ROUTERS_MCAST);

        // associate interface with specified multicast groups
        cStringTokenizer interfaceTokenizer(mcastGroups.c_str());
        const char *mcastGroup_s;
        while ((mcastGroup_s = interfaceTokenizer.nextToken()) != nullptr) {
            IPv4Address mcastGroup(mcastGroup_s);
            ie->ipv4Data()->joinMulticastGroup(mcastGroup);
        }
    }
}

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

• HostAutoConfigurator.h
• HostAutoConfigurator.cc