A Discrete-Event Network Simulator
API
socket-bound-tcp-static-routing.cc
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1/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
2/*
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5 * published by the Free Software Foundation;
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9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 * GNU General Public License for more details.
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13 * along with this program; if not, write to the Free Software
14 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
15 *
16 */
17
18/* Test program for multi-interface host, static routing
19
20 Destination host (10.20.1.2)
21 |
22 | 10.20.1.0/24
23 DSTRTR
24 10.10.1.0/24 / \ 10.10.2.0/24
25 / \
26 Rtr1 Rtr2
27 10.1.1.0/24 | | 10.1.2.0/24
28 | /
29 \ /
30 Source
31*/
32
33#include <iostream>
34#include <fstream>
35#include <string>
36#include <cassert>
37
38#include "ns3/core-module.h"
39#include "ns3/network-module.h"
40#include "ns3/internet-module.h"
41#include "ns3/point-to-point-module.h"
42#include "ns3/applications-module.h"
43#include "ns3/ipv4-static-routing-helper.h"
44#include "ns3/ipv4-list-routing-helper.h"
45
46using namespace ns3;
47
48NS_LOG_COMPONENT_DEFINE ("SocketBoundTcpRoutingExample");
49
50static const uint32_t totalTxBytes = 20000;
52static const uint32_t writeSize = 1040;
53uint8_t data[writeSize];
54
55
56void StartFlow (Ptr<Socket>, Ipv4Address, uint16_t);
58
59void SendStuff (Ptr<Socket> sock, Ipv4Address dstaddr, uint16_t port);
60void BindSock (Ptr<Socket> sock, Ptr<NetDevice> netdev);
61void srcSocketRecv (Ptr<Socket> socket);
62void dstSocketRecv (Ptr<Socket> socket);
63
64int
65main (int argc, char *argv[])
66{
67
68 // Allow the user to override any of the defaults and the above
69 // DefaultValue::Bind ()s at run-time, via command-line arguments
70 CommandLine cmd (__FILE__);
71 cmd.Parse (argc, argv);
72
73 Ptr<Node> nSrc = CreateObject<Node> ();
74 Ptr<Node> nDst = CreateObject<Node> ();
75 Ptr<Node> nRtr1 = CreateObject<Node> ();
76 Ptr<Node> nRtr2 = CreateObject<Node> ();
77 Ptr<Node> nDstRtr = CreateObject<Node> ();
78
79 NodeContainer c = NodeContainer (nSrc, nDst, nRtr1, nRtr2, nDstRtr);
80
81 InternetStackHelper internet;
82 internet.Install (c);
83
84 // Point-to-point links
85 NodeContainer nSrcnRtr1 = NodeContainer (nSrc, nRtr1);
86 NodeContainer nSrcnRtr2 = NodeContainer (nSrc, nRtr2);
87 NodeContainer nRtr1nDstRtr = NodeContainer (nRtr1, nDstRtr);
88 NodeContainer nRtr2nDstRtr = NodeContainer (nRtr2, nDstRtr);
89 NodeContainer nDstRtrnDst = NodeContainer (nDstRtr, nDst);
90
91 // We create the channels first without any IP addressing information
93 p2p.SetDeviceAttribute ("DataRate", StringValue ("5Mbps"));
94 p2p.SetChannelAttribute ("Delay", StringValue ("2ms"));
95 NetDeviceContainer dSrcdRtr1 = p2p.Install (nSrcnRtr1);
96 NetDeviceContainer dSrcdRtr2 = p2p.Install (nSrcnRtr2);
97 NetDeviceContainer dRtr1dDstRtr = p2p.Install (nRtr1nDstRtr);
98 NetDeviceContainer dRtr2dDstRtr = p2p.Install (nRtr2nDstRtr);
99 NetDeviceContainer dDstRtrdDst = p2p.Install (nDstRtrnDst);
100
101 Ptr<NetDevice> SrcToRtr1=dSrcdRtr1.Get (0);
102 Ptr<NetDevice> SrcToRtr2=dSrcdRtr2.Get (0);
103
104 // Later, we add IP addresses.
106 ipv4.SetBase ("10.1.1.0", "255.255.255.0");
107 Ipv4InterfaceContainer iSrciRtr1 = ipv4.Assign (dSrcdRtr1);
108 ipv4.SetBase ("10.1.2.0", "255.255.255.0");
109 Ipv4InterfaceContainer iSrciRtr2 = ipv4.Assign (dSrcdRtr2);
110 ipv4.SetBase ("10.10.1.0", "255.255.255.0");
111 Ipv4InterfaceContainer iRtr1iDstRtr = ipv4.Assign (dRtr1dDstRtr);
112 ipv4.SetBase ("10.10.2.0", "255.255.255.0");
113 Ipv4InterfaceContainer iRtr2iDstRtr = ipv4.Assign (dRtr2dDstRtr);
114 ipv4.SetBase ("10.20.1.0", "255.255.255.0");
115 Ipv4InterfaceContainer iDstRtrDst = ipv4.Assign (dDstRtrdDst);
116
117 Ptr<Ipv4> ipv4Src = nSrc->GetObject<Ipv4> ();
118 Ptr<Ipv4> ipv4Rtr1 = nRtr1->GetObject<Ipv4> ();
119 Ptr<Ipv4> ipv4Rtr2 = nRtr2->GetObject<Ipv4> ();
120 Ptr<Ipv4> ipv4DstRtr = nDstRtr->GetObject<Ipv4> ();
121 Ptr<Ipv4> ipv4Dst = nDst->GetObject<Ipv4> ();
122
123 Ipv4StaticRoutingHelper ipv4RoutingHelper;
124 Ptr<Ipv4StaticRouting> staticRoutingSrc = ipv4RoutingHelper.GetStaticRouting (ipv4Src);
125 Ptr<Ipv4StaticRouting> staticRoutingRtr1 = ipv4RoutingHelper.GetStaticRouting (ipv4Rtr1);
126 Ptr<Ipv4StaticRouting> staticRoutingRtr2 = ipv4RoutingHelper.GetStaticRouting (ipv4Rtr2);
127 Ptr<Ipv4StaticRouting> staticRoutingDstRtr = ipv4RoutingHelper.GetStaticRouting (ipv4DstRtr);
128 Ptr<Ipv4StaticRouting> staticRoutingDst = ipv4RoutingHelper.GetStaticRouting (ipv4Dst);
129
130 // Create static routes from Src to Dst
131 staticRoutingRtr1->AddHostRouteTo (Ipv4Address ("10.20.1.2"), Ipv4Address ("10.10.1.2"), 2);
132 staticRoutingRtr2->AddHostRouteTo (Ipv4Address ("10.20.1.2"), Ipv4Address ("10.10.2.2"), 2);
133
134 // Two routes to same destination - setting separate metrics.
135 // You can switch these to see how traffic gets diverted via different routes
136 staticRoutingSrc->AddHostRouteTo (Ipv4Address ("10.20.1.2"), Ipv4Address ("10.1.1.2"), 1,5);
137 staticRoutingSrc->AddHostRouteTo (Ipv4Address ("10.20.1.2"), Ipv4Address ("10.1.2.2"), 2,10);
138
139 // Creating static routes from DST to Source pointing to Rtr1 VIA Rtr2(!)
140 staticRoutingDst->AddHostRouteTo (Ipv4Address ("10.1.1.1"), Ipv4Address ("10.20.1.1"), 1);
141 staticRoutingDstRtr->AddHostRouteTo (Ipv4Address ("10.1.1.1"), Ipv4Address ("10.10.2.1"), 2);
142 staticRoutingRtr2->AddHostRouteTo (Ipv4Address ("10.1.1.1"), Ipv4Address ("10.1.2.1"), 1);
143
144 staticRoutingDst->AddHostRouteTo (Ipv4Address ("10.1.2.1"), Ipv4Address ("10.20.1.1"), 1);
145 staticRoutingDstRtr->AddHostRouteTo (Ipv4Address ("10.1.2.1"), Ipv4Address ("10.10.2.1"), 2);
146 staticRoutingRtr2->AddHostRouteTo (Ipv4Address ("10.1.2.1"), Ipv4Address ("10.1.2.1"), 1);
147
148 // There are no apps that can utilize the Socket Option so doing the work directly..
149 // Taken from tcp-large-transfer example
150
151 Ptr<Socket> srcSocket1 = Socket::CreateSocket (nSrc, TypeId::LookupByName ("ns3::TcpSocketFactory"));
152 Ptr<Socket> srcSocket2 = Socket::CreateSocket (nSrc, TypeId::LookupByName ("ns3::TcpSocketFactory"));
153 Ptr<Socket> srcSocket3 = Socket::CreateSocket (nSrc, TypeId::LookupByName ("ns3::TcpSocketFactory"));
154 Ptr<Socket> srcSocket4 = Socket::CreateSocket (nSrc, TypeId::LookupByName ("ns3::TcpSocketFactory"));
155
156
157 uint16_t dstport = 12345;
158 Ipv4Address dstaddr ("10.20.1.2");
159
160 PacketSinkHelper sink ("ns3::TcpSocketFactory", InetSocketAddress (Ipv4Address::GetAny (), dstport));
161 ApplicationContainer apps = sink.Install (nDst);
162 apps.Start (Seconds (0.0));
163 apps.Stop (Seconds (10.0));
164
165 AsciiTraceHelper ascii;
166 p2p.EnableAsciiAll (ascii.CreateFileStream ("socket-bound-tcp-static-routing.tr"));
167 p2p.EnablePcapAll ("socket-bound-tcp-static-routing");
168
170 LogComponentEnable ("SocketBoundTcpRoutingExample", LOG_LEVEL_INFO);
171
172 // First packet as normal (goes via Rtr1)
173 Simulator::Schedule (Seconds (0.1),&StartFlow, srcSocket1, dstaddr, dstport);
174 // Second via Rtr1 explicitly
175 Simulator::Schedule (Seconds (1.0),&BindSock, srcSocket2, SrcToRtr1);
176 Simulator::Schedule (Seconds (1.1),&StartFlow, srcSocket2, dstaddr, dstport);
177 // Third via Rtr2 explicitly
178 Simulator::Schedule (Seconds (2.0),&BindSock, srcSocket3, SrcToRtr2);
179 Simulator::Schedule (Seconds (2.1),&StartFlow, srcSocket3, dstaddr, dstport);
180 // Fourth again as normal (goes via Rtr1)
181 Simulator::Schedule (Seconds (3.0),&BindSock, srcSocket4, Ptr<NetDevice>(0));
182 Simulator::Schedule (Seconds (3.1),&StartFlow, srcSocket4, dstaddr, dstport);
183 // If you uncomment what's below, it results in ASSERT failing since you can't
184 // bind to a socket not existing on a node
185 // Simulator::Schedule(Seconds(4.0),&BindSock, srcSocket, dDstRtrdDst.Get(0));
187 Simulator::Destroy ();
188
189 return 0;
190}
191
193{
194 sock->BindToNetDevice (netdev);
195}
196
197void StartFlow (Ptr<Socket> localSocket,
198 Ipv4Address servAddress,
199 uint16_t servPort)
200{
201 NS_LOG_INFO ("Starting flow at time " << Simulator::Now ().GetSeconds ());
202 currentTxBytes = 0;
203 localSocket->Bind ();
204 localSocket->Connect (InetSocketAddress (servAddress, servPort)); //connect
205
206 // tell the tcp implementation to call WriteUntilBufferFull again
207 // if we blocked and new tx buffer space becomes available
209 WriteUntilBufferFull (localSocket, localSocket->GetTxAvailable ());
210}
211
212void WriteUntilBufferFull (Ptr<Socket> localSocket, uint32_t txSpace)
213{
214 while (currentTxBytes < totalTxBytes && localSocket->GetTxAvailable () > 0)
215 {
217 uint32_t dataOffset = currentTxBytes % writeSize;
218 uint32_t toWrite = writeSize - dataOffset;
219 toWrite = std::min (toWrite, left);
220 toWrite = std::min (toWrite, localSocket->GetTxAvailable ());
221 int amountSent = localSocket->Send (&data[dataOffset], toWrite, 0);
222 if(amountSent < 0)
223 {
224 // we will be called again when new tx space becomes available.
225 return;
226 }
227 currentTxBytes += amountSent;
228 }
229 localSocket->Close ();
230}
#define min(a, b)
Definition: 80211b.c:42
void Run(ObjectFactory &factory, uint32_t pop, uint32_t total, uint32_t runs, Ptr< RandomVariableStream > eventStream, bool calRev)
Perform the runs for a single scheduler type.
holds a vector of ns3::Application pointers.
void Start(Time start)
Arrange for all of the Applications in this container to Start() at the Time given as a parameter.
void Stop(Time stop)
Arrange for all of the Applications in this container to Stop() at the Time given as a parameter.
void EnableAsciiAll(std::string prefix)
Enable ascii trace output on each device (which is of the appropriate type) in the set of all nodes c...
Manage ASCII trace files for device models.
Definition: trace-helper.h:163
Ptr< OutputStreamWrapper > CreateFileStream(std::string filename, std::ios::openmode filemode=std::ios::out)
Create and initialize an output stream object we'll use to write the traced bits.
Parse command-line arguments.
Definition: command-line.h:229
an Inet address class
aggregate IP/TCP/UDP functionality to existing Nodes.
void Install(std::string nodeName) const
Aggregate implementations of the ns3::Ipv4, ns3::Ipv6, ns3::Udp, and ns3::Tcp classes onto the provid...
A helper class to make life easier while doing simple IPv4 address assignment in scripts.
void SetBase(Ipv4Address network, Ipv4Mask mask, Ipv4Address base="0.0.0.1")
Set the base network number, network mask and base address.
Ipv4InterfaceContainer Assign(const NetDeviceContainer &c)
Assign IP addresses to the net devices specified in the container based on the current network prefix...
Ipv4 addresses are stored in host order in this class.
Definition: ipv4-address.h:41
Access to the IPv4 forwarding table, interfaces, and configuration.
Definition: ipv4.h:77
holds a vector of std::pair of Ptr<Ipv4> and interface index.
Helper class that adds ns3::Ipv4StaticRouting objects.
holds a vector of ns3::NetDevice pointers
Ptr< NetDevice > Get(uint32_t i) const
Get the Ptr<NetDevice> stored in this container at a given index.
keep track of a set of node pointers.
Ptr< T > GetObject(void) const
Get a pointer to the requested aggregated Object.
Definition: object.h:470
A helper to make it easier to instantiate an ns3::PacketSinkApplication on a set of nodes.
void EnablePcapAll(std::string prefix, bool promiscuous=false)
Enable pcap output on each device (which is of the appropriate type) in the set of all nodes created ...
Build a set of PointToPointNetDevice objects.
void SetDeviceAttribute(std::string name, const AttributeValue &value)
Set an attribute value to be propagated to each NetDevice created by the helper.
void SetChannelAttribute(std::string name, const AttributeValue &value)
Set an attribute value to be propagated to each Channel created by the helper.
NetDeviceContainer Install(NodeContainer c)
virtual int Send(Ptr< Packet > p, uint32_t flags)=0
Send data (or dummy data) to the remote host.
void SetSendCallback(Callback< void, Ptr< Socket >, uint32_t > sendCb)
Notify application when space in transmit buffer is added.
Definition: socket.cc:121
virtual int Connect(const Address &address)=0
Initiate a connection to a remote host.
virtual void BindToNetDevice(Ptr< NetDevice > netdevice)
Bind a socket to specific device.
Definition: socket.cc:330
virtual int Close(void)=0
Close a socket.
virtual int Bind(const Address &address)=0
Allocate a local endpoint for this socket.
virtual uint32_t GetTxAvailable(void) const =0
Returns the number of bytes which can be sent in a single call to Send.
Hold variables of type string.
Definition: string.h:41
uint16_t port
Definition: dsdv-manet.cc:45
#define NS_LOG_COMPONENT_DEFINE(name)
Define a Log component with a specific name.
Definition: log.h:206
#define NS_LOG_INFO(msg)
Use NS_LOG to output a message of level LOG_INFO.
Definition: log.h:282
Time Now(void)
create an ns3::Time instance which contains the current simulation time.
Definition: simulator.cc:287
Time Seconds(double value)
Construct a Time in the indicated unit.
Definition: nstime.h:1245
Every class exported by the ns3 library is enclosed in the ns3 namespace.
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...
Definition: callback.h:661
@ LOG_PREFIX_TIME
Prefix all trace prints with simulation time.
Definition: log.h:120
@ LOG_LEVEL_INFO
LOG_INFO and above.
Definition: log.h:108
void LogComponentEnable(char const *name, enum LogLevel level)
Enable the logging output associated with that log component.
Definition: log.cc:361
void LogComponentEnableAll(enum LogLevel level)
Enable the logging output for all registered log components.
Definition: log.cc:385
cmd
Definition: second.py:43
static const uint32_t totalTxBytes
void srcSocketRecv(Ptr< Socket > socket)
void dstSocketRecv(Ptr< Socket > socket)
void SendStuff(Ptr< Socket > sock, Ipv4Address dstaddr, uint16_t port)
static const uint32_t writeSize
void WriteUntilBufferFull(Ptr< Socket >, uint32_t)
static uint32_t currentTxBytes
uint8_t data[writeSize]
void BindSock(Ptr< Socket > sock, Ptr< NetDevice > netdev)
void StartFlow(Ptr< Socket >, Ipv4Address, uint16_t)
Ptr< PacketSink > sink
Pointer to the packet sink application.
Definition: wifi-tcp.cc:56