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 StartFlow(Ptr<Socket> sock,
  23     const char *to,
  24     uint16_t port_number);
  25
  26 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simulator_ns3, surf,
  27                                 "Logging specific to the SURF network NS3 module");
  28
  29 // Constructor.
  30 NS3Sim::NS3Sim(){
  31 }
  32 //Destructor.
  33 NS3Sim::~NS3Sim(){
  34 }
  35
  36 /*
  37  * This function create a flow from src to dst
  38  *
  39  * Parameters
  40  *              src: node source
  41  *              dst: node destination
  42  *              port_number: The port number to use
  43  *              start: the time the communication start
  44  *              addr:  ip address
  45  *              TotalBytes: number of bytes to transmit
  46  */
  47 void NS3Sim::create_flow_NS3(
  48                 Ptr<Node> src,
  49                 Ptr<Node> dst,
  50                 uint16_t port_number,
  51                 double start,
  52                 const char *addr,
  53                 uint32_t TotalBytes,
  54                 void * action)
  55 {
  56         if(!dict_socket) dict_socket = xbt_dict_new();
  57         PacketSinkHelper sink ("ns3::TcpSocketFactory", InetSocketAddress (Ipv4Address::GetAny(), port_number));
  58         sink.Install (dst);
  59         Ptr<Socket> sock = Socket::CreateSocket (src, TypeId::LookupByName ("ns3::TcpSocketFactory"));
  60         MySocket *mysocket = new MySocket();
  61         mysocket->TotalBytes = TotalBytes;
  62         mysocket->remaining = TotalBytes;
  63         mysocket->last_amount_sent = 0;
  64         mysocket->bufferedBytes = 0;
  65         mysocket->sentBytes = 0;
  66         mysocket->finished = 0;
  67         mysocket->action = action;
  68         xbt_dict_set(dict_socket,(const char*)&sock, mysocket,NULL);
  69         sock->Bind(InetSocketAddress(port_number));
  70         Simulator::Schedule (Seconds(start),&StartFlow, sock, addr, port_number);
  71 }
  72
  73 void* NS3Sim::get_action_from_socket(void *socket){
  74         return ((MySocket *)socket)->action;
  75 }
  76
  77 char NS3Sim::get_finished(void *socket){
  78         return ((MySocket *)socket)->finished;
  79 }
  80
  81 double NS3Sim::get_remains_from_socket(void *socket){
  82         return ((MySocket *)socket)->remaining;
  83 }
  84
  85 double NS3Sim::get_last_amount_sent_from_socket(void *socket){
  86         return ((MySocket *)socket)->last_amount_sent;
  87 }
  88
  89 void NS3Sim::reset_last_amount_sent_from_socket(void *socket){
  90         ((MySocket *)socket)->last_amount_sent = 0;
  91 }
  92
  93 void NS3Sim::simulator_stop(double min){
  94         if(min > 0.0)
  95                 Simulator::Stop(Seconds(min));
  96         else
  97                 Simulator::Stop();
  98 }
  99
 100 void NS3Sim::simulator_start(void){
 101         XBT_DEBUG("Start simulator");
 102         Simulator::Run ();
 103 }
 104
 105 static void receive_callback(Ptr<Socket> localSocket){
 106   Address addr;
 107   localSocket->GetSockName (addr);
 108   InetSocketAddress iaddr = InetSocketAddress::ConvertFrom (addr);
 109   MySocket* mysocket = (MySocket*)xbt_dict_get_or_null(dict_socket,(char*)&localSocket);
 110   mysocket->finished = 1;
 111
 112   //cout << "[" << Simulator::Now ().GetSeconds() << "] " << "Received [" << mysocket->TotalBytes << "bytes],  from: " << iaddr.GetIpv4 () << " port: " << iaddr.GetPort () << endl;
 113         std::stringstream sstream;
 114                 sstream << Simulator::Now ().GetSeconds();
 115                 std::string s = sstream.str();
 116                 size_t size = s.size() + 1;
 117                 char * time_sec = new char[ size ];
 118                 strncpy( time_sec, s.c_str(), size );
 119   XBT_DEBUG("Stop simulator at %s seconds",time_sec);
 120   Simulator::Stop();
 121 }
 122
 123 static void send_callback(Ptr<Socket> localSocket, uint32_t txSpace){
 124
 125         Address addr;
 126         localSocket->GetSockName (addr);
 127         InetSocketAddress iaddr = InetSocketAddress::ConvertFrom (addr);
 128         MySocket* mysocket = (MySocket*)xbt_dict_get_or_null(dict_socket,(char*)&localSocket);
 129         uint32_t totalBytes = mysocket->TotalBytes;
 130         while ((mysocket->bufferedBytes) < totalBytes && localSocket->GetTxAvailable () > 0){
 131           uint32_t toWrite = min ((mysocket->remaining), writeSize);
 132           toWrite = min (toWrite, localSocket->GetTxAvailable ());
 133           int amountSent = localSocket->Send (&data[0], toWrite, 0);
 134
 135           if(amountSent < 0)
 136             return;
 137
 138           (mysocket->last_amount_sent) += amountSent;
 139           (mysocket->bufferedBytes) += amountSent;
 140           (mysocket->remaining) -= amountSent;
 141           //cout << "[" << Simulator::Now ().GetSeconds() << "] " << "Send one packet, remaining "<<  mysocket->remaining << " bytes!" << endl;
 142         }
 143         if ((mysocket->bufferedBytes) >= TotalBytes){
 144                 localSocket->Close();
 145         }
 146
 147 }
 148
 149 static void StartFlow(Ptr<Socket> sock,
 150     const char *to,
 151     uint16_t port_number)
 152 {
 153   InetSocketAddress serverAddr (to, port_number);
 154
 155   //cout << "[" <<  Simulator::Now().GetSeconds() << "] Starting flow to " << to << " using port " << port_number << endl;
 156
 157   sock->Connect(serverAddr);
 158   sock->SetSendCallback (MakeCallback (&send_callback));
 159   sock->SetRecvCallback (MakeCallback (&receive_callback));
 160 }