A Discrete-Event Network Simulator
API
point-to-point-star.cc
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15 
16 // Implement an object to create a star topology.
17 
18 #include "point-to-point-star.h"
19 
20 #include "ns3/constant-position-mobility-model.h"
21 #include "ns3/ipv6-address-generator.h"
22 #include "ns3/log.h"
23 #include "ns3/node-list.h"
24 #include "ns3/point-to-point-net-device.h"
25 #include "ns3/vector.h"
26 
27 #include <cmath>
28 #include <iostream>
29 #include <sstream>
30 
31 namespace ns3
32 {
33 
34 NS_LOG_COMPONENT_DEFINE("PointToPointStarHelper");
35 
37 {
38  m_hub.Create(1);
39  m_spokes.Create(numSpokes);
40 
41  for (uint32_t i = 0; i < m_spokes.GetN(); ++i)
42  {
43  NetDeviceContainer nd = p2pHelper.Install(m_hub.Get(0), m_spokes.Get(i));
44  m_hubDevices.Add(nd.Get(0));
45  m_spokeDevices.Add(nd.Get(1));
46  }
47 }
48 
50 {
51 }
52 
55 {
56  return m_hub.Get(0);
57 }
58 
61 {
62  return m_spokes.Get(i);
63 }
64 
67 {
68  return m_hubInterfaces.GetAddress(i);
69 }
70 
73 {
74  return m_spokeInterfaces.GetAddress(i);
75 }
76 
79 {
80  return m_hubInterfaces6.GetAddress(i, 1);
81 }
82 
85 {
86  return m_spokeInterfaces6.GetAddress(i, 1);
87 }
88 
89 uint32_t
91 {
92  return m_spokes.GetN();
93 }
94 
95 void
97 {
98  stack.Install(m_hub);
99  stack.Install(m_spokes);
100 }
101 
102 void
104 {
105  for (uint32_t i = 0; i < m_spokes.GetN(); ++i)
106  {
109  address.NewNetwork();
110  }
111 }
112 
113 void
115 {
116  Ipv6AddressGenerator::Init(addrBase, prefix);
117  Ipv6Address v6network;
118  Ipv6AddressHelper addressHelper;
119 
120  for (uint32_t i = 0; i < m_spokes.GetN(); ++i)
121  {
122  v6network = Ipv6AddressGenerator::GetNetwork(prefix);
123  addressHelper.SetBase(v6network, prefix);
124 
125  Ipv6InterfaceContainer ic = addressHelper.Assign(m_hubDevices.Get(i));
126  m_hubInterfaces6.Add(ic);
127  ic = addressHelper.Assign(m_spokeDevices.Get(i));
129 
131  }
132 }
133 
134 void
135 PointToPointStarHelper::BoundingBox(double ulx, double uly, double lrx, double lry)
136 {
137  double xDist;
138  double yDist;
139  if (lrx > ulx)
140  {
141  xDist = lrx - ulx;
142  }
143  else
144  {
145  xDist = ulx - lrx;
146  }
147  if (lry > uly)
148  {
149  yDist = lry - uly;
150  }
151  else
152  {
153  yDist = uly - lry;
154  }
155 
156  // Place the hub
157  Ptr<Node> hub = m_hub.Get(0);
159  if (!hubLoc)
160  {
161  hubLoc = CreateObject<ConstantPositionMobilityModel>();
162  hub->AggregateObject(hubLoc);
163  }
164  Vector hubVec(ulx + xDist / 2.0, uly + yDist / 2.0, 0);
165  hubLoc->SetPosition(hubVec);
166 
167  double spokeDist;
168  if (xDist > yDist)
169  {
170  spokeDist = yDist / 4.0;
171  }
172  else
173  {
174  spokeDist = xDist / 4.0;
175  }
176 
177  double theta = 2 * M_PI / m_spokes.GetN();
178  for (uint32_t i = 0; i < m_spokes.GetN(); ++i)
179  {
180  Ptr<Node> spokeNode = m_spokes.Get(i);
183  if (!spokeLoc)
184  {
185  spokeLoc = CreateObject<ConstantPositionMobilityModel>();
186  spokeNode->AggregateObject(spokeLoc);
187  }
188  Vector spokeVec(hubVec.x + std::cos(theta * i) * spokeDist,
189  hubVec.y + std::sin(theta * i) * spokeDist,
190  0);
191  spokeLoc->SetPosition(spokeVec);
192  }
193 }
194 
195 } // namespace ns3
Mobility model for which the current position does not change once it has been set and until it is se...
aggregate IP/TCP/UDP functionality to existing Nodes.
A helper class to make life easier while doing simple IPv4 address assignment in scripts.
Ipv4 addresses are stored in host order in this class.
Definition: ipv4-address.h:42
void Add(const Ipv4InterfaceContainer &other)
Concatenate the entries in the other container with ours.
Ipv4Address GetAddress(uint32_t i, uint32_t j=0) const
static void Init(const Ipv6Address net, const Ipv6Prefix prefix, const Ipv6Address interfaceId="::1")
Initialise the base network and interfaceId for the generator.
static Ipv6Address GetNetwork(const Ipv6Prefix prefix)
Get the current network of the given Ipv6Prefix.
static Ipv6Address NextNetwork(const Ipv6Prefix prefix)
Get the next network according to the given Ipv6Prefix.
Helper class to auto-assign global IPv6 unicast addresses.
void SetBase(Ipv6Address network, Ipv6Prefix prefix, Ipv6Address base=Ipv6Address("::1"))
Set the base network number, network prefix, and base interface ID.
Ipv6InterfaceContainer Assign(const NetDeviceContainer &c)
Allocate an Ipv6InterfaceContainer with auto-assigned addresses.
Describes an IPv6 address.
Definition: ipv6-address.h:49
Keep track of a set of IPv6 interfaces.
Ipv6Address GetAddress(uint32_t i, uint32_t j) const
Get the address for the specified index.
void Add(Ptr< Ipv6 > ipv6, uint32_t interface)
Add a couple IPv6/interface.
Describes an IPv6 prefix.
Definition: ipv6-address.h:455
holds a vector of ns3::NetDevice pointers
void Add(NetDeviceContainer other)
Append the contents of another NetDeviceContainer to the end of this container.
Ptr< NetDevice > Get(uint32_t i) const
Get the Ptr<NetDevice> stored in this container at a given index.
uint32_t GetN() const
Get the number of Ptr<Node> stored in this container.
void Create(uint32_t n)
Create n nodes and append pointers to them to the end of this NodeContainer.
Ptr< Node > Get(uint32_t i) const
Get the Ptr<Node> stored in this container at a given index.
Ptr< T > GetObject() const
Get a pointer to the requested aggregated Object.
Definition: object.h:471
void AggregateObject(Ptr< Object > other)
Aggregate two Objects together.
Definition: object.cc:259
Build a set of PointToPointNetDevice objects.
NetDeviceContainer Install(NodeContainer c)
Ptr< Node > GetSpokeNode(uint32_t i) const
NodeContainer m_hub
Hub node.
Ipv6InterfaceContainer m_hubInterfaces6
IPv6 hub interfaces.
void InstallStack(InternetStackHelper stack)
Ipv4Address GetSpokeIpv4Address(uint32_t i) const
NodeContainer m_spokes
Spoke nodes.
NetDeviceContainer m_hubDevices
Hub node NetDevices.
Ipv4InterfaceContainer m_spokeInterfaces
IPv4 spoke nodes interfaces.
PointToPointStarHelper(uint32_t numSpokes, PointToPointHelper p2pHelper)
Create a PointToPointStarHelper in order to easily create star topologies using p2p links.
Ipv4InterfaceContainer m_hubInterfaces
IPv4 hub interfaces.
Ipv4Address GetHubIpv4Address(uint32_t i) const
void AssignIpv6Addresses(Ipv6Address network, Ipv6Prefix prefix)
Ipv6Address GetSpokeIpv6Address(uint32_t i) const
void BoundingBox(double ulx, double uly, double lrx, double lry)
Sets up the node canvas locations for every node in the star.
void AssignIpv4Addresses(Ipv4AddressHelper address)
Ipv6Address GetHubIpv6Address(uint32_t i) const
Ipv6InterfaceContainer m_spokeInterfaces6
IPv6 spoke nodes interfaces.
NetDeviceContainer m_spokeDevices
Spoke nodes NetDevices.
#define NS_LOG_COMPONENT_DEFINE(name)
Define a Log component with a specific name.
Definition: log.h:202
address
Definition: first.py:47
stack
Definition: first.py:44
Every class exported by the ns3 library is enclosed in the ns3 namespace.