src/surf/ns3/ns3_simulator.cc

   1 /* Copyright (c) 2007-2014. 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 "src/surf/ns3/ns3_simulator.h"
   8 #include "xbt/dict.h"
   9 #include "xbt/log.h"
  10 #include "xbt/sysdep.h"
  11
  12 using namespace ns3;
  13 using namespace std;
  14
  15 xbt_dict_t dict_socket = NULL;
  16
  17 NS3Sim SimulatorNS3;
  18 static char socket_key[24];
  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, const char *to, uint16_t port_number);
  24
  25 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(ns3);
  26
  27 NS3Sim::NS3Sim(){
  28 }
  29 NS3Sim::~NS3Sim(){
  30 }
  31
  32 static inline void transformSocketPtr (Ptr<Socket> localSocket)
  33 {
  34   std::stringstream sstream;
  35   sstream << localSocket ;
  36   std::string s = sstream.str();
  37   sprintf(socket_key,"%s",s.c_str());
  38 }
  39
  40 static void delete_mysocket(void *p)
  41 {
  42   MySocket *sock = (MySocket *)p;
  43   delete(sock);
  44 }
  45
  46 /*
  47  * This function creates a flow from src to dst
  48  *
  49  * Parameters
  50  *              src: node source
  51  *              dst: node destination
  52  *              port_number: The port number to use
  53  *              start: the time the communication start
  54  *              addr:  ip address
  55  *              totalBytes: number of bytes to transmit
  56  */
  57 void NS3Sim::create_flow_NS3(
  58                 Ptr<Node> src,
  59                 Ptr<Node> dst,
  60                 uint16_t port_number,
  61                 double start,
  62                 const char *addr,
  63                 uint32_t totalBytes,
  64                 simgrid::surf::NetworkNS3Action * action)
  65 {
  66         if(!dict_socket)
  67           dict_socket = xbt_dict_new_homogeneous(delete_mysocket);
  68
  69         PacketSinkHelper sink ("ns3::TcpSocketFactory",
  70                                                         InetSocketAddress (Ipv4Address::GetAny(),
  71                                                         port_number));
  72         sink.Install (dst);
  73
  74         Ptr<Socket> sock = Socket::CreateSocket (src, TcpSocketFactory::GetTypeId());
  75
  76         MySocket *mysocket = new MySocket();
  77         mysocket->totalBytes = totalBytes;
  78         mysocket->remaining = totalBytes;
  79         mysocket->action = action;
  80
  81         transformSocketPtr(sock);
  82         xbt_dict_set(dict_socket,socket_key, mysocket,NULL);
  83
  84         sock->Bind(InetSocketAddress(port_number));
  85         XBT_DEBUG("Create flow starting to %fs + %fs = %fs",start-ns3::Simulator::Now().GetSeconds(), ns3::Simulator::Now().GetSeconds(), start);
  86
  87         Simulator::Schedule (Seconds(start-ns3::Simulator::Now().GetSeconds()),&StartFlow, sock, addr, port_number);
  88 }
  89
  90 void NS3Sim::simulator_start(double min){
  91   if(min > 0.0)
  92     Simulator::Stop(Seconds(min));
  93   XBT_DEBUG("Start simulator '%f'",min);
  94   Simulator::Run ();
  95 }
  96
  97 static MySocket* get_my_socket(Ptr<Socket> localSocket) {
  98         transformSocketPtr(localSocket);
  99         return (MySocket*)xbt_dict_get_or_null(dict_socket,socket_key);
 100 }
 101
 102 static void receive_callback(Ptr<Socket> localSocket){
 103   MySocket* mysocket = get_my_socket(localSocket);
 104
 105   if (mysocket->finished == false){
 106     mysocket->finished = true;
 107     XBT_DEBUG("recv_cb of F[%p, %p, %d]", mysocket, mysocket->action, mysocket->totalBytes);
 108     XBT_DEBUG("Stop simulator at %f seconds", Simulator::Now().GetSeconds());
 109     Simulator::Stop(Seconds(0.0));
 110     Simulator::Run();
 111   }
 112 }
 113
 114 static void send_callback(Ptr<Socket> localSocket, uint32_t txSpace){
 115         MySocket* mysocket = get_my_socket(localSocket);
 116
 117         if (mysocket->remaining == 0){
 118                   // all data was already buffered (and socket was already closed), just return
 119                   return;
 120         }
 121
 122         uint8_t *data = (uint8_t*)malloc(sizeof(uint8_t)*txSpace);
 123
 124         while (mysocket->bufferedBytes < mysocket->totalBytes
 125                         && localSocket->GetTxAvailable () > 0)
 126         {
 127       uint32_t toWrite = min ((mysocket->remaining), txSpace);
 128       toWrite = min (toWrite, localSocket->GetTxAvailable ());
 129       int amountSent = localSocket->Send (data, toWrite, 0);
 130
 131       if(amountSent < 0)
 132           return;
 133       (mysocket->bufferedBytes) += amountSent;
 134       (mysocket->remaining) -= amountSent;
 135       XBT_DEBUG("send_cb of F[%p, %p, %d] (%d/%d) %d buffered", mysocket, mysocket->action, mysocket->totalBytes, mysocket->remaining, mysocket->totalBytes, amountSent);
 136
 137     }
 138
 139         free(data);
 140
 141         if ((mysocket->bufferedBytes) >= mysocket->totalBytes)
 142                 localSocket->Close();
 143 }
 144
 145 static void datasent_callback(Ptr<Socket> localSocket, uint32_t dataSent){
 146   MySocket* mysocket = get_my_socket(localSocket);
 147   mysocket->sentBytes += dataSent;
 148   XBT_DEBUG("datasent_cb of F[%p, %p, %d] %d sent", mysocket, mysocket->action, mysocket->totalBytes, dataSent);
 149 }
 150
 151 static void normalClose_callback(Ptr<Socket> localSocket){
 152   MySocket* mysocket = get_my_socket(localSocket);
 153   XBT_DEBUG("normalClose_cb of F[%p, %p, %d]", mysocket, mysocket->action, mysocket->totalBytes);
 154   receive_callback (localSocket);
 155 }
 156
 157 static void errorClose_callback(Ptr<Socket> localSocket){
 158   MySocket* mysocket = get_my_socket(localSocket);
 159   XBT_DEBUG("errorClose_cb of F[%p, %p, %d]", mysocket, mysocket->action, mysocket->totalBytes);
 160   xbt_die("NS3: a socket was closed anormally");
 161 }
 162
 163 static void succeededConnect_callback(Ptr<Socket> localSocket){
 164   MySocket* mysocket = get_my_socket(localSocket);
 165   XBT_DEBUG("succeededConnect_cb of F[%p, %p, %d]", mysocket, mysocket->action, mysocket->totalBytes);
 166 }
 167
 168 static void failedConnect_callback(Ptr<Socket> localSocket){
 169   MySocket* mysocket = get_my_socket(localSocket);
 170   XBT_DEBUG("failedConnect_cb of F[%p, %p, %d]", mysocket, mysocket->action, mysocket->totalBytes);
 171   xbt_die("NS3: a socket failed to connect");
 172 }
 173
 174 static void StartFlow(Ptr<Socket> sock, const char *to, uint16_t port_number)
 175 {
 176   InetSocketAddress serverAddr (to, port_number);
 177
 178   sock->Connect(serverAddr);
 179   sock->SetSendCallback (MakeCallback (&send_callback));
 180   sock->SetRecvCallback (MakeCallback (&receive_callback));
 181   sock->SetDataSentCallback (MakeCallback (&datasent_callback));
 182   sock->SetConnectCallback (MakeCallback (&succeededConnect_callback), MakeCallback (&failedConnect_callback));
 183   sock->SetCloseCallbacks (MakeCallback (&normalClose_callback), MakeCallback (&errorClose_callback));
 184
 185   MySocket* mysocket = get_my_socket(sock);
 186   XBT_DEBUG("startFlow_cb of F[%p, %p, %d] dest=%s port=%d", mysocket, mysocket->action, mysocket->totalBytes, to, port_number);
 187 }