--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/examples/socket/socket-bound-static-routing.cc Tue Dec 15 21:07:22 2009 -0800
@@ -0,0 +1,220 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation;
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+/* Test program for multi-interface host, static routing
+
+ Destination host (10.20.1.2)
+ |
+ | 10.20.1.0/24
+ DSTRTR
+ 10.10.1.0/24 / \ 10.10.2.0/24
+ / \
+ Rtr1 Rtr2
+ 10.1.1.0/24 | | 10.1.2.0/24
+ | /
+ \ /
+ Source
+*/
+
+#include <iostream>
+#include <fstream>
+#include <string>
+#include <cassert>
+
+#include "ns3/core-module.h"
+#include "ns3/simulator-module.h"
+#include "ns3/node-module.h"
+#include "ns3/helper-module.h"
+
+using namespace ns3;
+
+NS_LOG_COMPONENT_DEFINE ("SocketBoundRoutingExample");
+
+void SendStuff (Ptr<Socket> sock, Ipv4Address dstaddr, uint16_t port);
+void BindSock (Ptr<Socket> sock, Ptr<NetDevice> netdev);
+void srcSocketRecv (Ptr<Socket> socket);
+void dstSocketRecv (Ptr<Socket> socket);
+
+int
+main (int argc, char *argv[])
+{
+
+ // Allow the user to override any of the defaults and the above
+ // DefaultValue::Bind ()s at run-time, via command-line arguments
+ CommandLine cmd;
+ cmd.Parse (argc, argv);
+
+ Ptr<Node> nSrc = CreateObject<Node> ();
+ Ptr<Node> nDst = CreateObject<Node> ();
+ Ptr<Node> nRtr1 = CreateObject<Node> ();
+ Ptr<Node> nRtr2 = CreateObject<Node> ();
+ Ptr<Node> nDstRtr = CreateObject<Node> ();
+
+ NodeContainer c = NodeContainer (nSrc, nDst, nRtr1, nRtr2, nDstRtr);
+
+ InternetStackHelper internet;
+ internet.Install (c);
+
+ // Point-to-point links
+ NodeContainer nSrcnRtr1 = NodeContainer (nSrc, nRtr1);
+ NodeContainer nSrcnRtr2 = NodeContainer (nSrc, nRtr2);
+ NodeContainer nRtr1nDstRtr = NodeContainer (nRtr1, nDstRtr);
+ NodeContainer nRtr2nDstRtr = NodeContainer (nRtr2, nDstRtr);
+ NodeContainer nDstRtrnDst = NodeContainer (nDstRtr, nDst);
+
+ // We create the channels first without any IP addressing information
+ PointToPointHelper p2p;
+ p2p.SetDeviceAttribute ("DataRate", StringValue ("5Mbps"));
+ p2p.SetChannelAttribute ("Delay", StringValue ("2ms"));
+ NetDeviceContainer dSrcdRtr1 = p2p.Install (nSrcnRtr1);
+ NetDeviceContainer dSrcdRtr2 = p2p.Install (nSrcnRtr2);
+ NetDeviceContainer dRtr1dDstRtr = p2p.Install (nRtr1nDstRtr);
+ NetDeviceContainer dRtr2dDstRtr = p2p.Install (nRtr2nDstRtr);
+ NetDeviceContainer dDstRtrdDst = p2p.Install (nDstRtrnDst);
+
+ Ptr<NetDevice> SrcToRtr1=dSrcdRtr1.Get (0);
+ Ptr<NetDevice> SrcToRtr2=dSrcdRtr2.Get (0);
+
+ // Later, we add IP addresses.
+ Ipv4AddressHelper ipv4;
+ ipv4.SetBase ("10.1.1.0", "255.255.255.0");
+ Ipv4InterfaceContainer iSrciRtr1 = ipv4.Assign (dSrcdRtr1);
+ ipv4.SetBase ("10.1.2.0", "255.255.255.0");
+ Ipv4InterfaceContainer iSrciRtr2 = ipv4.Assign (dSrcdRtr2);
+ ipv4.SetBase ("10.10.1.0", "255.255.255.0");
+ Ipv4InterfaceContainer iRtr1iDstRtr = ipv4.Assign (dRtr1dDstRtr);
+ ipv4.SetBase ("10.10.2.0", "255.255.255.0");
+ Ipv4InterfaceContainer iRtr2iDstRtr = ipv4.Assign (dRtr2dDstRtr);
+ ipv4.SetBase ("10.20.1.0", "255.255.255.0");
+ Ipv4InterfaceContainer iDstRtrDst = ipv4.Assign (dDstRtrdDst);
+
+ Ptr<Ipv4> ipv4Src = nSrc->GetObject<Ipv4> ();
+ Ptr<Ipv4> ipv4Rtr1 = nRtr1->GetObject<Ipv4> ();
+ Ptr<Ipv4> ipv4Rtr2 = nRtr2->GetObject<Ipv4> ();
+ Ptr<Ipv4> ipv4DstRtr = nDstRtr->GetObject<Ipv4> ();
+ Ptr<Ipv4> ipv4Dst = nDst->GetObject<Ipv4> ();
+
+ Ipv4StaticRoutingHelper ipv4RoutingHelper;
+ Ptr<Ipv4StaticRouting> staticRoutingSrc = ipv4RoutingHelper.GetStaticRouting (ipv4Src);
+ Ptr<Ipv4StaticRouting> staticRoutingRtr1 = ipv4RoutingHelper.GetStaticRouting (ipv4Rtr1);
+ Ptr<Ipv4StaticRouting> staticRoutingRtr2 = ipv4RoutingHelper.GetStaticRouting (ipv4Rtr2);
+ Ptr<Ipv4StaticRouting> staticRoutingDstRtr = ipv4RoutingHelper.GetStaticRouting (ipv4DstRtr);
+ Ptr<Ipv4StaticRouting> staticRoutingDst = ipv4RoutingHelper.GetStaticRouting (ipv4Dst);
+
+ // Create static routes from Src to Dst
+ staticRoutingRtr1->AddHostRouteTo (Ipv4Address ("10.20.1.2"), Ipv4Address ("10.10.1.2"), 2);
+ staticRoutingRtr2->AddHostRouteTo (Ipv4Address ("10.20.1.2"), Ipv4Address ("10.10.2.2"), 2);
+
+ // Two routes to same destination - setting separate metrics.
+ // You can switch these to see how traffic gets diverted via different routes
+ staticRoutingSrc->AddHostRouteTo (Ipv4Address ("10.20.1.2"), Ipv4Address ("10.1.1.2"), 1,5);
+ staticRoutingSrc->AddHostRouteTo (Ipv4Address ("10.20.1.2"), Ipv4Address ("10.1.2.2"), 2,10);
+
+ // Creating static routes from DST to Source pointing to Rtr1 VIA Rtr2(!)
+ staticRoutingDst->AddHostRouteTo (Ipv4Address ("10.1.1.1"), Ipv4Address ("10.20.1.1"), 1);
+ staticRoutingDstRtr->AddHostRouteTo (Ipv4Address ("10.1.1.1"), Ipv4Address ("10.10.2.1"), 2);
+ staticRoutingRtr2->AddHostRouteTo (Ipv4Address ("10.1.1.1"), Ipv4Address ("10.1.2.1"), 1);
+
+ Ipv4InterfaceAddress ifInAddrSrc=ipv4Src->GetAddress (1,0);
+
+ // There are no apps that can utilize the Socket Option so doing the work directly..
+ // Taken from tcp-large-transfer example
+
+ Ptr<Socket> srcSocket = Socket::CreateSocket (nSrc, TypeId::LookupByName ("ns3::UdpSocketFactory"));
+ srcSocket->Bind ();
+ srcSocket->SetRecvCallback (MakeCallback (&srcSocketRecv));
+
+ Ptr<Socket> dstSocket = Socket::CreateSocket (nDst, TypeId::LookupByName ("ns3::UdpSocketFactory"));
+ uint16_t dstport = 12345;
+ Ipv4Address dstaddr ("10.20.1.2");
+ InetSocketAddress dst = InetSocketAddress (dstaddr, dstport);
+ dstSocket->Bind (dst);
+ dstSocket->SetRecvCallback (MakeCallback (&dstSocketRecv));
+
+ std::ofstream ascii;
+ ascii.open ("socket-bound-static-routing.tr");
+ PointToPointHelper::EnablePcapAll ("socket-bound-static-routing");
+ PointToPointHelper::EnableAsciiAll (ascii);
+
+ LogComponentEnableAll (LOG_PREFIX_TIME);
+ LogComponentEnable ("SocketBoundRoutingExample", LOG_LEVEL_INFO);
+
+ // First packet as normal (goes via Rtr1)
+ Simulator::Schedule (Seconds (0.1),&SendStuff, srcSocket, dstaddr, dstport);
+ // Second via Rtr1 explicitly
+ Simulator::Schedule (Seconds (1.0),&BindSock, srcSocket, SrcToRtr1);
+ Simulator::Schedule (Seconds( 1.1),&SendStuff, srcSocket, dstaddr, dstport);
+ // Third via Rtr2 explicitly
+ Simulator::Schedule (Seconds (2.0),&BindSock, srcSocket, SrcToRtr2);
+ Simulator::Schedule (Seconds (2.1),&SendStuff, srcSocket, dstaddr, dstport);
+ // Fourth again as normal (goes via Rtr1)
+ Simulator::Schedule (Seconds (3.0),&BindSock, srcSocket, Ptr<NetDevice>(0));
+ Simulator::Schedule (Seconds (3.1),&SendStuff, srcSocket, dstaddr, dstport);
+ // If you uncomment what's below, it results in ASSERT failing since you can't
+ // bind to a socket not existing on a node
+ // Simulator::Schedule(Seconds(4.0),&BindSock, srcSocket, dDstRtrdDst.Get(0));
+ Simulator::Run ();
+ Simulator::Destroy ();
+
+ return 0;
+}
+
+void SendStuff(Ptr<Socket> sock, Ipv4Address dstaddr, uint16_t port)
+{
+ Ptr<Packet> p = Create<Packet> ();
+ p->AddPaddingAtEnd (100);
+ sock->SendTo (p, 0, InetSocketAddress (dstaddr,port));
+ return;
+}
+
+void BindSock(Ptr<Socket> sock, Ptr<NetDevice> netdev)
+{
+ sock->BindToNetDevice (netdev);
+ return;
+}
+
+void
+srcSocketRecv (Ptr<Socket> socket)
+{
+ Address from;
+ Ptr<Packet> packet = socket->RecvFrom (from);
+ packet->RemoveAllPacketTags ();
+ packet->RemoveAllByteTags ();
+ InetSocketAddress address = InetSocketAddress::ConvertFrom (from);
+ NS_LOG_INFO ("Source Received " << packet->GetSize () << " bytes from " << address.GetIpv4());
+ if (socket->GetBoundNetDevice ())
+ {
+ NS_LOG_INFO ("Socket was bound");
+ }
+ else
+ {
+ NS_LOG_INFO ("Socket was not bound");
+ }
+}
+
+void
+dstSocketRecv (Ptr<Socket> socket)
+{
+ Address from;
+ Ptr<Packet> packet = socket->RecvFrom (from);
+ packet->RemoveAllPacketTags ();
+ packet->RemoveAllByteTags ();
+ InetSocketAddress address = InetSocketAddress::ConvertFrom (from);
+ NS_LOG_INFO ("Destination Received " << packet->GetSize () << " bytes from " << address.GetIpv4 ());
+ NS_LOG_INFO ("Triggering packet back to source node's interface 1");
+ SendStuff(socket, Ipv4Address ("10.1.1.1"), address.GetPort ());
+}