17#include "ns3/assert.h"
22#include "ns3/random-variable-stream.h"
23#include "ns3/simulator.h"
24#include "ns3/uinteger.h"
28#define RIPNG_ALL_NODE "ff02::9"
40 m_splitHorizonStrategy(
RipNg::POISON_REVERSE),
56 .SetGroupName(
"Internet")
57 .AddConstructor<
RipNg>()
58 .AddAttribute(
"UnsolicitedRoutingUpdate",
59 "The time between two Unsolicited Routing Updates.",
63 .AddAttribute(
"StartupDelay",
64 "Maximum random delay for protocol startup (send route requests).",
68 .AddAttribute(
"TimeoutDelay",
69 "The delay to invalidate a route.",
73 .AddAttribute(
"GarbageCollectionDelay",
74 "The delay to delete an expired route.",
78 .AddAttribute(
"MinTriggeredCooldown",
79 "Min cooldown delay after a Triggered Update.",
83 .AddAttribute(
"MaxTriggeredCooldown",
84 "Max cooldown delay after a Triggered Update.",
88 .AddAttribute(
"SplitHorizon",
89 "Split Horizon strategy.",
98 .AddAttribute(
"LinkDownValue",
99 "Value for link down in count to infinity.",
111 m_rng->SetStream(stream);
120 bool addedGlobal =
false;
130 bool activeInterface =
false;
133 activeInterface =
true;
142 NS_LOG_LOGIC(
"RIPng: adding socket to " << address.GetAddress());
148 int ret = socket->Bind(local);
151 socket->SetIpv6RecvHopLimit(
true);
152 socket->SetRecvPktInfo(
true);
210 rtentry =
Lookup(destination,
true, oif);
247 NS_LOG_LOGIC(
"Dropping packet not for me and with src or dst LinkLocal");
271 NS_LOG_LOGIC(
"Found unicast destination - calling unicast callback");
272 ucb(idev, rtentry, p, header);
277 NS_LOG_LOGIC(
"Did not find unicast destination - returning false");
291 Ipv6Address networkAddress = address.GetAddress().CombinePrefix(networkMask);
304 bool sendSocketFound =
false;
307 if (iter->second == i)
309 sendSocketFound =
true;
314 bool activeInterface =
false;
317 activeInterface =
true;
328 NS_LOG_LOGIC(
"RIPng: adding sending socket to " << address.GetAddress());
336 socket->SetIpv6RecvHopLimit(
true);
337 socket->SetRecvPktInfo(
true);
368 if (it->first->GetInterface() == interface)
376 NS_LOG_INFO(
"Checking socket for interface " << interface);
377 if (iter->second == interface)
379 NS_LOG_INFO(
"Removed socket for interface " << interface);
380 iter->first->Close();
407 Ipv6Address networkAddress = address.GetAddress().CombinePrefix(address.GetPrefix());
433 Ipv6Address networkAddress = address.GetAddress().CombinePrefix(address.GetPrefix());
440 if (it->first->GetInterface() ==
interface && it->first->IsNetwork() &&
441 it->first->GetDestNetwork() == networkAddress &&
442 it->first->GetDestNetworkPrefix() == networkMask)
461 NS_LOG_INFO(
this << dst << mask << nextHop << interface << prefixToUse);
503 std::ostream* os = stream->GetStream();
504 *os << std::resetiosflags(std::ios::adjustfield) << std::setiosflags(std::ios::left);
508 <<
", IPv6 RIPng table" << std::endl;
512 *os <<
"Destination Next Hop Flag Met Ref Use If"
521 std::ostringstream dest;
522 std::ostringstream gw;
523 std::ostringstream mask;
524 std::ostringstream flags;
526 dest << route->
GetDest() <<
"/"
528 *os << std::setw(31) << dest.str();
530 *os << std::setw(27) << gw.str();
540 *os << std::setw(5) << flags.str();
581 iter->first->Close();
599 uint16_t longestMask = 0;
606 "Try to send on link-local multicast address, and no interface index is given!");
610 rtentry->SetDestination(dst);
612 rtentry->SetOutputDevice(interface);
626 NS_LOG_LOGIC(
"Searching for route to " << dst <<
", mask length " << maskLen);
630 NS_LOG_LOGIC(
"Found global network route " << j <<
", mask length " << maskLen);
635 if (maskLen < longestMask)
641 longestMask = maskLen;
668 rtentry->SetDestination(route->
GetDest());
678 NS_LOG_LOGIC(
"Matching route via " << rtentry->GetDestination() <<
" (through "
679 << rtentry->GetGateway() <<
") at the end");
691 NS_LOG_FUNCTION(
this << network << networkPrefix << nextHop << interface << prefixToUse);
695 NS_LOG_WARN(
"Ripng::AddNetworkRouteTo - Next hop should be link-local");
700 route->SetRouteMetric(1);
702 route->SetRouteChanged(
true);
713 route->SetRouteMetric(1);
715 route->SetRouteChanged(
true);
727 if (it->first == route)
732 if (it->second.IsPending())
741 NS_ABORT_MSG(
"Ripng::InvalidateRoute - cannot find the route to update");
751 if (it->first == route)
758 NS_ABORT_MSG(
"Ripng::DeleteRoute - cannot find the route to delete");
769 NS_LOG_INFO(
"Received " << *packet <<
" from " << senderAddr);
772 uint16_t senderPort = senderAddr.
GetPort();
775 if (!packet->RemovePacketTag(interfaceInfo))
777 NS_ABORT_MSG(
"No incoming interface on RIPng message, aborting.");
785 if (!packet->RemovePacketTag(hoplimitTag))
787 NS_ABORT_MSG(
"No incoming Hop Count on RIPng message, aborting.");
792 if (interfaceForAddress != -1)
799 packet->RemoveHeader(hdr);
807 HandleRequests(hdr, senderAddress, senderPort, ipInterfaceIndex, hopLimit);
822 NS_LOG_FUNCTION(
this << senderAddress <<
int(senderPort) << incomingInterface <<
int(hopLimit)
825 std::list<RipNgRte> rtes = requestHdr.
GetRteList();
833 if (rtes.size() == 1 && senderAddress.
IsLinkLocal())
836 rtes.begin()->GetPrefixLen() == 0 && rtes.begin()->GetRouteMetric() ==
m_linkDown)
847 if (iter->second == incomingInterface)
849 sendingSocket = iter->first;
853 "HandleRequest - Impossible to find a socket to send the reply");
863 p->RemovePacketTag(tag);
865 p->AddPacketTag(tag);
872 bool splitHorizoning = (rtIter->first->GetInterface() == incomingInterface);
876 rtIter->first->GetDestNetworkPrefix());
879 bool isDefaultRoute =
882 (rtIter->first->GetInterface() != incomingInterface));
884 if ((isGlobal || isDefaultRoute) &&
888 rte.
SetPrefix(rtIter->first->GetDestNetwork());
889 rte.
SetPrefixLen(rtIter->first->GetDestNetworkPrefix().GetPrefixLength());
910 p->RemoveHeader(hdr);
934 if (iter->second == incomingInterface)
936 sendingSocket = iter->first;
947 p->RemovePacketTag(tag);
949 p->AddPacketTag(tag);
954 for (
auto iter = rtes.begin(); iter != rtes.end(); iter++)
961 rtIter->first->GetDestNetworkPrefix());
967 Ipv6Address rtAddress = rtIter->first->GetDestNetwork();
968 rtAddress.
CombinePrefix(rtIter->first->GetDestNetworkPrefix());
970 if (requestedAddress == rtAddress)
972 iter->SetRouteMetric(rtIter->first->GetRouteMetric());
973 iter->SetRouteTag(rtIter->first->GetRouteTag());
983 iter->SetRouteTag(0);
999 NS_LOG_FUNCTION(
this << senderAddress << incomingInterface <<
int(hopLimit) << hdr);
1004 "Ignoring an update message from an excluded interface: " << incomingInterface);
1010 NS_LOG_LOGIC(
"Ignoring an update message from a non-link-local source: " << senderAddress);
1014 if (hopLimit != 255)
1016 NS_LOG_LOGIC(
"Ignoring an update message with suspicious hop count: " <<
int(hopLimit));
1023 for (
auto iter = rtes.begin(); iter != rtes.end(); iter++)
1025 if (iter->GetRouteMetric() == 0 || iter->GetRouteMetric() >
m_linkDown)
1027 NS_LOG_LOGIC(
"Ignoring an update message with malformed metric: "
1028 <<
int(iter->GetRouteMetric()));
1031 if (iter->GetPrefixLen() > 128)
1033 NS_LOG_LOGIC(
"Ignoring an update message with malformed prefix length: "
1034 <<
int(iter->GetPrefixLen()));
1037 if (iter->GetPrefix().IsLocalhost() || iter->GetPrefix().IsLinkLocal() ||
1038 iter->GetPrefix().IsMulticast())
1040 NS_LOG_LOGIC(
"Ignoring an update message with wrong prefixes: " << iter->GetPrefix());
1045 bool changed =
false;
1047 for (
auto iter = rtes.begin(); iter != rtes.end(); iter++)
1054 uint8_t interfaceMetric = 1;
1059 uint16_t rteMetric = iter->GetRouteMetric() + interfaceMetric;
1068 if (it->first->GetDestNetwork() == rteAddr &&
1069 it->first->GetDestNetworkPrefix() == rtePrefix)
1072 if (rteMetric < it->
first->GetRouteMetric())
1074 if (senderAddress != it->first->GetGateway())
1084 it->first->SetRouteMetric(rteMetric);
1086 it->first->SetRouteTag(iter->GetRouteTag());
1087 it->first->SetRouteChanged(
true);
1088 it->second.Cancel();
1095 else if (rteMetric == it->first->GetRouteMetric())
1097 if (senderAddress == it->first->GetGateway())
1099 it->second.Cancel();
1114 route->SetRouteMetric(rteMetric);
1116 route->SetRouteTag(iter->GetRouteTag());
1117 route->SetRouteChanged(
true);
1120 it->second.Cancel();
1129 else if (rteMetric > it->first->GetRouteMetric() &&
1130 senderAddress == it->first->GetGateway())
1132 it->second.Cancel();
1135 it->first->SetRouteMetric(rteMetric);
1137 it->first->SetRouteTag(iter->GetRouteTag());
1138 it->first->SetRouteChanged(
true);
1139 it->second.Cancel();
1155 NS_LOG_LOGIC(
"Received a RTE with new route, adding.");
1162 route->SetRouteMetric(rteMetric);
1164 route->SetRouteChanged(
true);
1199 p->AddPacketTag(tag);
1206 bool splitHorizoning = (rtIter->first->GetInterface() == interface);
1209 rtIter->first->GetDestNetworkPrefix());
1212 <<
int(rtIter->first->IsRouteChanged()));
1215 bool isDefaultRoute =
1218 (rtIter->first->GetInterface() != interface));
1220 if ((isGlobal || isDefaultRoute) && (periodic || rtIter->first->IsRouteChanged()))
1223 rte.
SetPrefix(rtIter->first->GetDestNetwork());
1224 rte.
SetPrefixLen(rtIter->first->GetDestNetworkPrefix().GetPrefixLength());
1245 p->RemoveHeader(hdr);
1259 rtIter->first->SetRouteChanged(
false);
1270 NS_LOG_LOGIC(
"Skipping Triggered Update due to cooldown");
1334 return iter->second;
1357 p->RemovePacketTag(tag);
1359 p->AddPacketTag(tag);
1403 m_status(RIPNG_INVALID),
1420 m_status(RIPNG_INVALID),
1432 m_status(RIPNG_INVALID),
1444 if (
m_tag != routeTag)
1504 os << static_cast<const Ipv6RoutingTableEntry&>(rte);
a polymophic address class
bool IsNull() const
Check for null implementation.
Hold variables of type enum.
An identifier for simulation events.
void Cancel()
This method is syntactic sugar for the ns3::Simulator::Cancel method.
bool IsPending() const
This method is syntactic sugar for !IsExpired().
static Inet6SocketAddress ConvertFrom(const Address &addr)
Convert the address to a InetSocketAddress.
uint16_t GetPort() const
Get the port.
Ipv6Address GetIpv6() const
Get the IPv6 address.
Describes an IPv6 address.
bool IsLinkLocal() const
If the IPv6 address is a link-local address (fe80::/64).
static Ipv6Address GetAny()
Get the "any" (::) Ipv6Address.
bool IsLinkLocalMulticast() const
If the IPv6 address is link-local multicast (ff02::/16).
static Ipv6Address GetZero()
Get the 0 (::) Ipv6Address.
bool IsMulticast() const
If the IPv6 address is multicast (ff00::/8).
bool IsAny() const
If the IPv6 address is the "Any" address.
Ipv6Address CombinePrefix(const Ipv6Prefix &prefix) const
Combine this address with a prefix.
virtual Ipv6InterfaceAddress GetAddress(uint32_t interface, uint32_t addressIndex) const =0
Get IPv6 address on specified IPv6 interface.
virtual Ipv6Address SourceAddressSelection(uint32_t interface, Ipv6Address dest)=0
Choose the source address to use with destination address.
virtual uint16_t GetMtu(uint32_t interface) const =0
Get MTU for the specified IPv6 interface.
virtual int32_t GetInterfaceForDevice(Ptr< const NetDevice > device) const =0
Get the interface index of the specified NetDevice.
virtual uint32_t GetNInterfaces() const =0
Get number of interfaces.
virtual bool IsUp(uint32_t interface) const =0
If the specified interface index is in "up" state.
virtual bool IsForwarding(uint32_t interface) const =0
If the specified IPv6 interface has forwarding enabled.
virtual void SetForwarding(uint32_t interface, bool val)=0
Set forwarding on specified IPv6 interface.
virtual int32_t GetInterfaceForAddress(Ipv6Address address) const =0
Return the interface number of the interface that has been assigned the specified IP address.
virtual uint32_t GetNAddresses(uint32_t interface) const =0
Get number of addresses on specified IPv6 interface.
virtual Ptr< NetDevice > GetNetDevice(uint32_t interface)=0
Get the NetDevice of the specified interface number.
IPv6 address associated with an interface.
Ipv6InterfaceAddress::Scope_e GetScope() const
Get address scope.
@ LINKLOCAL
Link-local address (fe80::/64)
@ GLOBAL
Global address (2000::/3)
This class implements a tag that carries socket ancillary data to the socket interface.
uint32_t GetRecvIf() const
Get the tag's receiving interface.
Describes an IPv6 prefix.
uint8_t GetPrefixLength() const
Get prefix length.
static Ipv6Prefix GetZero()
Get the zero prefix ( /0).
bool IsMatch(Ipv6Address a, Ipv6Address b) const
If the Address match the type.
Abstract base class for IPv6 routing protocols.
A record of an IPv6 route.
Ipv6Address GetDest() const
Get the destination.
Ipv6Address GetDestNetwork() const
Get the destination network.
Ipv6Address GetPrefixToUse() const
Get the prefix to use (for multihomed link).
bool IsHost() const
Is the route entry correspond to a host ?
uint32_t GetInterface() const
Get the interface index.
Ipv6Prefix GetDestNetworkPrefix() const
Get the destination prefix.
Ipv6Address GetGateway() const
Get the gateway.
bool IsGateway() const
Is it the gateway ?
static std::string FindName(Ptr< Object > object)
Given a pointer to an object, look to see if that object has a name associated with it and,...
Ptr< T > GetObject() const
Get a pointer to the requested aggregated Object.
virtual void DoInitialize()
Initialize() implementation.
virtual void DoDispose()
Destructor implementation.
Smart pointer class similar to boost::intrusive_ptr.
RIPng Routing Protocol, defined in RFC 2080 .
Ptr< Socket > m_multicastRecvSocket
multicast receive socket
void NotifyInterfaceUp(uint32_t interface) override
Notify when specified interface goes UP.
void NotifyAddAddress(uint32_t interface, Ipv6InterfaceAddress address) override
Notify when specified interface add an address.
void NotifyAddRoute(Ipv6Address dst, Ipv6Prefix mask, Ipv6Address nextHop, uint32_t interface, Ipv6Address prefixToUse=Ipv6Address::GetZero()) override
Notify a new route.
void DoSendRouteUpdate(bool periodic)
Send Routing Updates on all interfaces.
Time m_startupDelay
Random delay before protocol startup.
void DoDispose() override
Dispose this object.
SplitHorizonType_e m_splitHorizonStrategy
Split Horizon strategy.
@ SPLIT_HORIZON
Split Horizon.
@ POISON_REVERSE
Poison Reverse Split Horizon.
@ NO_SPLIT_HORIZON
No Split Horizon.
EventId m_nextTriggeredUpdate
Next Triggered Update event.
std::list< std::pair< RipNgRoutingTableEntry *, EventId > >::iterator RoutesI
Iterator for container for the network routes.
void NotifyRemoveAddress(uint32_t interface, Ipv6InterfaceAddress address) override
Notify when specified interface add an address.
Time m_minTriggeredUpdateDelay
Min cooldown delay after a Triggered Update.
void SetInterfaceExclusions(std::set< uint32_t > exceptions)
Set the set of interface excluded from the protocol.
Ptr< Ipv6Route > RouteOutput(Ptr< Packet > p, const Ipv6Header &header, Ptr< NetDevice > oif, Socket::SocketErrno &sockerr) override
Query routing cache for an existing route, for an outbound packet.
EventId m_nextUnsolicitedUpdate
Next Unsolicited Update event.
uint8_t m_linkDown
Link down value.
Time m_maxTriggeredUpdateDelay
Max cooldown delay after a Triggered Update.
void DoInitialize() override
Start protocol operation.
bool m_initialized
flag to allow socket's late-creation.
SocketList m_unicastSocketList
list of sockets for unicast messages (socket, interface index)
uint8_t GetInterfaceMetric(uint32_t interface) const
Get the metric for an interface.
bool RouteInput(Ptr< const Packet > p, const Ipv6Header &header, Ptr< const NetDevice > idev, const UnicastForwardCallback &ucb, const MulticastForwardCallback &mcb, const LocalDeliverCallback &lcb, const ErrorCallback &ecb) override
Route an input packet (to be forwarded or locally delivered)
Time m_unsolicitedUpdate
time between two Unsolicited Routing Updates
std::set< uint32_t > m_interfaceExclusions
Set of excluded interfaces.
void SetInterfaceMetric(uint32_t interface, uint8_t metric)
Set the metric for an interface.
int64_t AssignStreams(int64_t stream)
Assign a fixed random variable stream number to the random variables used by this model.
void DeleteRoute(RipNgRoutingTableEntry *route)
Delete a route.
void AddNetworkRouteTo(Ipv6Address network, Ipv6Prefix networkPrefix, Ipv6Address nextHop, uint32_t interface, Ipv6Address prefixToUse)
Add route to network.
Time m_garbageCollectionDelay
Delay before deleting an INVALID route.
std::map< uint32_t, uint8_t > m_interfaceMetrics
Map of interface metrics.
void SendRouteRequest()
Send Routing Request on all interfaces.
void NotifyInterfaceDown(uint32_t interface) override
Notify when specified interface goes DOWN.
Ptr< Ipv6 > m_ipv6
IPv6 reference.
Routes m_routes
the forwarding table for network.
std::set< uint32_t > GetInterfaceExclusions() const
Get the set of interface excluded from the protocol.
void SendTriggeredRouteUpdate()
Send Triggered Routing Updates on all interfaces.
void HandleRequests(RipNgHeader hdr, Ipv6Address senderAddress, uint16_t senderPort, uint32_t incomingInterface, uint8_t hopLimit)
Handle RIPng requests.
Ptr< UniformRandomVariable > m_rng
Rng stream.
void HandleResponses(RipNgHeader hdr, Ipv6Address senderAddress, uint32_t incomingInterface, uint8_t hopLimit)
Handle RIPng responses.
void NotifyRemoveRoute(Ipv6Address dst, Ipv6Prefix mask, Ipv6Address nextHop, uint32_t interface, Ipv6Address prefixToUse=Ipv6Address::GetZero()) override
Notify route removing.
static TypeId GetTypeId()
Get the type ID.
void InvalidateRoute(RipNgRoutingTableEntry *route)
Invalidate a route.
void SetIpv6(Ptr< Ipv6 > ipv6) override
Typically, invoked directly or indirectly from ns3::Ipv6::SetRoutingProtocol.
void Receive(Ptr< Socket > socket)
Receive RIPng packets.
void AddDefaultRouteTo(Ipv6Address nextHop, uint32_t interface)
Add a default route to the router through the nextHop located on interface.
Time m_timeoutDelay
Delay before invalidating a route.
void SendUnsolicitedRouteUpdate()
Send Unsolicited Routing Updates on all interfaces.
void PrintRoutingTable(Ptr< OutputStreamWrapper > stream, Time::Unit unit=Time::S) const override
Print the Routing Table entries.
Ptr< Ipv6Route > Lookup(Ipv6Address dest, bool setSource, Ptr< NetDevice >=nullptr)
Lookup in the forwarding table for destination.
RipNg Routing Table Entry.
bool IsRouteChanged() const
Get the route changed status.
uint16_t GetRouteTag() const
Get the route tag.
bool m_changed
route has been updated
void SetRouteTag(uint16_t routeTag)
Set the route tag.
uint8_t GetRouteMetric() const
Get the route metric.
void SetRouteMetric(uint8_t routeMetric)
Set the route metric.
uint8_t m_metric
route metric
Status_e m_status
route status
Status_e GetRouteStatus() const
Get the route status.
void SetRouteChanged(bool changed)
Set the route as changed.
~RipNgRoutingTableEntry() override
void SetRouteStatus(Status_e status)
Set the route status.
RipNg Routing Table Entry (RTE) - see RFC 2080
void SetPrefix(Ipv6Address prefix)
Set the prefix.
void SetPrefixLen(uint8_t prefixLen)
Set the prefix length.
void SetRouteMetric(uint8_t routeMetric)
Set the route metric.
uint32_t GetSerializedSize() const override
Get the serialized size of the packet.
void SetRouteTag(uint16_t routeTag)
Set the route tag.
static EventId Schedule(const Time &delay, FUNC f, Ts &&... args)
Schedule an event to expire after delay.
static Time GetDelayLeft(const EventId &id)
Get the remaining time until this event will execute.
void SetRecvPktInfo(bool flag)
Enable/Disable receive packet information to socket.
void SetRecvCallback(Callback< void, Ptr< Socket > > receivedData)
Notify application when new data is available to be read.
static Ptr< Socket > CreateSocket(Ptr< Node > node, TypeId tid)
This method wraps the creation of sockets that is performed on a given node by a SocketFactory specif...
virtual int Close()=0
Close a socket.
SocketErrno
Enumeration of the possible errors returned by a socket.
virtual int Bind(const Address &address)=0
Allocate a local endpoint for this socket.
void SetIpv6RecvHopLimit(bool ipv6RecvHopLimit)
Tells a socket to pass information about IPv6 Hop Limit up the stack.
This class implements a tag that carries the socket-specific HOPLIMIT of a packet to the IPv6 layer.
uint8_t GetHopLimit() const
Get the tag's Hop Limit.
void SetHopLimit(uint8_t hopLimit)
Set the tag's Hop Limit.
Simulation virtual time values and global simulation resolution.
TimeWithUnit As(const Unit unit=Time::AUTO) const
Attach a unit to a Time, to facilitate output in a specific unit.
double GetSeconds() const
Get an approximation of the time stored in this instance in the indicated unit.
Unit
The unit to use to interpret a number representing time.
a unique identifier for an interface.
static TypeId LookupByName(std::string name)
Get a TypeId by name.
TypeId SetParent(TypeId tid)
Set the parent TypeId.
Hold an unsigned integer type.
#define NS_ASSERT(condition)
At runtime, in debugging builds, if this condition is not true, the program prints the source file,...
#define NS_ASSERT_MSG(condition, message)
At runtime, in debugging builds, if this condition is not true, the program prints the message to out...
#define NS_ABORT_MSG(msg)
Unconditional abnormal program termination with a message.
#define NS_LOG_COMPONENT_DEFINE(name)
Define a Log component with a specific name.
#define NS_LOG_DEBUG(msg)
Use NS_LOG to output a message of level LOG_DEBUG.
#define NS_LOG_LOGIC(msg)
Use NS_LOG to output a message of level LOG_LOGIC.
#define NS_LOG_FUNCTION(parameters)
If log level LOG_FUNCTION is enabled, this macro will output all input parameters separated by ",...
#define NS_LOG_WARN(msg)
Use NS_LOG to output a message of level LOG_WARN.
#define NS_LOG_INFO(msg)
Use NS_LOG to output a message of level LOG_INFO.
Ptr< T > CreateObject(Args &&... args)
Create an object by type, with varying number of constructor parameters.
#define NS_OBJECT_ENSURE_REGISTERED(type)
Register an Object subclass with the TypeId system.
Ptr< T > Create(Ts &&... args)
Create class instances by constructors with varying numbers of arguments and return them by Ptr.
Time Now()
create an ns3::Time instance which contains the current simulation time.
Time Seconds(double value)
Construct a Time in the indicated unit.
Every class exported by the ns3 library is enclosed in the ns3 namespace.
Ptr< const AttributeChecker > MakeUintegerChecker()
Ptr< const AttributeAccessor > MakeTimeAccessor(T1 a1)
Callback< R, Args... > MakeCallback(R(T::*memPtr)(Args...), OBJ objPtr)
Build Callbacks for class method members which take varying numbers of arguments and potentially retu...
Ptr< const AttributeAccessor > MakeUintegerAccessor(T1 a1)
std::ostream & operator<<(std::ostream &os, const Angles &a)
Ptr< const AttributeChecker > MakeEnumChecker(T v, std::string n, Ts... args)
Make an EnumChecker pre-configured with a set of allowed values by name.
Ptr< const AttributeAccessor > MakeEnumAccessor(T1 a1)
Ptr< const AttributeChecker > MakeTimeChecker()
Helper to make an unbounded Time checker.