src/surf/ns3/ns3_simulator.cc

   1 /* Copyright (c) 2007, 2008, 2009, 2010. The SimGrid Team.
   2  * All rights reserved.                                                     */
   3
   4 /* This program is free software; you can redistribute it and/or modify it
   5  * under the terms of the license (GNU LGPL) which comes with this package. */
   6
   7 #include "surf/ns3/ns3_simulator.h"
   8 #include "xbt/dict.h"
   9 #include "xbt/log.h"
  10
  11 using namespace ns3;
  12 using namespace std;
  13
  14 static const uint32_t writeSize  = 1024; // limit the amout of data to write
  15 uint8_t data[writeSize];
  16 xbt_dict_t dict_socket = NULL;
  17
  18 NS3Sim SimulatorNS3;
  19
  20 static void receive_callback(Ptr<Socket> localSocket);
  21 static void send_callback(Ptr<Socket> localSocket, uint32_t txSpace);
  22 static void datasent_callback(Ptr<Socket> localSocket, uint32_t dataSent);
  23 static void StartFlow(Ptr<Socket> sock,
  24     const char *to,
  25     uint16_t port_number);
  26
  27 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simulator_ns3, surf,
  28                                 "Logging specific to the SURF network NS3 module");
  29
  30 // Constructor.
  31 NS3Sim::NS3Sim(){
  32 }
  33 //Destructor.
  34 NS3Sim::~NS3Sim(){
  35 }
  36
  37 /*
  38  * This function create a flow from src to dst
  39  *
  40  * Parameters
  41  *              src: node source
  42  *              dst: node destination
  43  *              port_number: The port number to use
  44  *              start: the time the communication start
  45  *              addr:  ip address
  46  *              totalBytes: number of bytes to transmit
  47  */
  48 void NS3Sim::create_flow_NS3(
  49                 Ptr<Node> src,
  50                 Ptr<Node> dst,
  51                 uint16_t port_number,
  52                 double start,
  53                 const char *addr,
  54                 uint32_t totalBytes,
  55                 void * action)
  56 {
  57         if(!dict_socket) dict_socket = xbt_dict_new();
  58         PacketSinkHelper sink ("ns3::TcpSocketFactory", InetSocketAddress (Ipv4Address::GetAny(), port_number));
  59         sink.Install (dst);
  60         Ptr<Socket> sock = Socket::CreateSocket (src, TypeId::LookupByName ("ns3::TcpSocketFactory"));
  61         MySocket *mysocket = new MySocket();
  62         mysocket->totalBytes = totalBytes;
  63         mysocket->remaining = totalBytes;
  64         mysocket->last_amount_sent = 0;
  65         mysocket->bufferedBytes = 0;
  66         mysocket->sentBytes = 0;
  67         mysocket->finished = 0;
  68         mysocket->action = action;
  69         xbt_dict_set(dict_socket,(const char*)&sock, mysocket,NULL);
  70         sock->Bind(InetSocketAddress(port_number));
  71         Simulator::Schedule (Seconds(start),&StartFlow, sock, addr, port_number);
  72 }
  73
  74 void* NS3Sim::get_action_from_socket(void *socket){
  75         return ((MySocket *)socket)->action;
  76 }
  77
  78 char NS3Sim::get_finished(void *socket){
  79         return ((MySocket *)socket)->finished;
  80 }
  81
  82 double NS3Sim::get_remains_from_socket(void *socket){
  83         return ((MySocket *)socket)->remaining;
  84 }
  85
  86 double NS3Sim::get_last_amount_sent_from_socket(void *socket){
  87         return ((MySocket *)socket)->last_amount_sent;
  88 }
  89
  90 void NS3Sim::reset_last_amount_sent_from_socket(void *socket){
  91         ((MySocket *)socket)->last_amount_sent = 0;
  92 }
  93
  94 void NS3Sim::simulator_stop(double min){
  95         if(min > 0.0)
  96                 Simulator::Stop(Seconds(min));
  97         else
  98                 Simulator::Stop();
  99 }
 100
 101 void NS3Sim::simulator_start(void){
 102         XBT_DEBUG("Start simulator");
 103         Simulator::Run ();
 104 }
 105
 106 static void receive_callback(Ptr<Socket> localSocket){
 107   Address addr;
 108   localSocket->GetSockName (addr);
 109   InetSocketAddress iaddr = InetSocketAddress::ConvertFrom (addr);
 110   MySocket* mysocket = (MySocket*)xbt_dict_get_or_null(dict_socket,(char*)&localSocket);
 111   mysocket->finished = 1;
 112
 113   //cout << "[" << Simulator::Now ().GetSeconds() << "] " << "Received [" << mysocket->totalBytes << "bytes],  from: " << iaddr.GetIpv4 () << " port: " << iaddr.GetPort () << endl;
 114         std::stringstream sstream;
 115                 sstream << Simulator::Now ().GetSeconds();
 116                 std::string s = sstream.str();
 117                 size_t size = s.size() + 1;
 118                 char * time_sec = new char[ size ];
 119                 strncpy( time_sec, s.c_str(), size );
 120   XBT_DEBUG("Stop simulator at %s seconds",time_sec);
 121   Simulator::Stop();
 122 }
 123
 124 static void send_callback(Ptr<Socket> localSocket, uint32_t txSpace){
 125
 126         Address addr;
 127         localSocket->GetSockName (addr);
 128         InetSocketAddress iaddr = InetSocketAddress::ConvertFrom (addr);
 129         MySocket* mysocket = (MySocket*)xbt_dict_get_or_null(dict_socket,(char*)&localSocket);
 130         uint32_t totalBytes = mysocket->totalBytes;
 131         while ((mysocket->bufferedBytes) < totalBytes && localSocket->GetTxAvailable () > 0){
 132           uint32_t toWrite = min ((mysocket->remaining), writeSize);
 133           toWrite = min (toWrite, localSocket->GetTxAvailable ());
 134           int amountSent = localSocket->Send (&data[0], toWrite, 0);
 135
 136           if(amountSent < 0)
 137             return;
 138
 139           (mysocket->last_amount_sent) += amountSent;
 140           (mysocket->bufferedBytes) += amountSent;
 141           (mysocket->remaining) -= amountSent;
 142           //cout << "[" << Simulator::Now ().GetSeconds() << "] " << "Send one packet, remaining "<<  mysocket->remaining << " bytes!" << endl;
 143         }
 144         if ((mysocket->bufferedBytes) >= totalBytes){
 145                 localSocket->Close();
 146         }
 147
 148 }
 149
 150 static void datasent_callback(Ptr<Socket> localSocket, uint32_t dataSent){
 151   Address addr;
 152   localSocket->GetSockName (addr);
 153   InetSocketAddress iaddr = InetSocketAddress::ConvertFrom (addr);
 154   MySocket* mysocket = (MySocket*)xbt_dict_get_or_null(dict_socket,(char*)&localSocket);
 155   mysocket->sentBytes += dataSent;
 156   //cout << "[" << Simulator::Now ().GetSeconds() << "] " << "DATASENT [" << mysocket->totalBytes << "bytes],  from: " << iaddr.GetIpv4 () << " port: " << iaddr.GetPort () << " dataSent " << dataSent <<endl;
 157 }
 158
 159
 160 static void StartFlow(Ptr<Socket> sock,
 161     const char *to,
 162     uint16_t port_number)
 163 {
 164   InetSocketAddress serverAddr (to, port_number);
 165
 166   //cout << "[" <<  Simulator::Now().GetSeconds() << "] Starting flow to " << to << " using port " << port_number << endl;
 167
 168   sock->Connect(serverAddr);
 169   sock->SetSendCallback (MakeCallback (&send_callback));
 170   sock->SetRecvCallback (MakeCallback (&receive_callback));
 171   sock->SetDataSentCallback (MakeCallback (&datasent_callback));
 172 }