* under the terms of the license (GNU LGPL) which comes with this package. */
#include "surf/ns3/ns3_simulator.h"
+#include "xbt/dict.h"
+#include "xbt/log.h"
+
+using namespace ns3;
+using namespace std;
+
+xbt_dict_t dict_socket = NULL;
+
+NS3Sim SimulatorNS3;
+
+static void receive_callback(Ptr<Socket> localSocket);
+static void send_callback(Ptr<Socket> localSocket, uint32_t txSpace);
+static void datasent_callback(Ptr<Socket> localSocket, uint32_t dataSent);
+static void StartFlow(Ptr<Socket> sock,
+ const char *to,
+ uint16_t port_number);
+
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simulator_ns3, surf,
+ "Logging specific to the SURF network NS3 module");
// Constructor.
NS3Sim::NS3Sim(){
//Destructor.
NS3Sim::~NS3Sim(){
}
+
+/*
+ * This function create a flow from src to dst
+ *
+ * Parameters
+ * src: node source
+ * dst: node destination
+ * port_number: The port number to use
+ * start: the time the communication start
+ * addr: ip address
+ * totalBytes: number of bytes to transmit
+ */
+void NS3Sim::create_flow_NS3(
+ Ptr<Node> src,
+ Ptr<Node> dst,
+ uint16_t port_number,
+ double start,
+ const char *addr,
+ uint32_t totalBytes,
+ void * action)
+{
+ if(!dict_socket) dict_socket = xbt_dict_new();
+
+ PacketSinkHelper sink ("ns3::TcpSocketFactory",
+ InetSocketAddress (Ipv4Address::GetAny(),
+ port_number));
+ sink.Install (dst);
+ Ptr<Socket> sock = Socket::CreateSocket (src,
+ TcpSocketFactory::GetTypeId());
+
+ MySocket *mysocket = new MySocket();
+ mysocket->totalBytes = totalBytes;
+ mysocket->remaining = totalBytes;
+ mysocket->bufferedBytes = 0;
+ mysocket->sentBytes = 0;
+ mysocket->finished = 0;
+ mysocket->action = action;
+ xbt_dict_set(dict_socket,(const char*)&sock, mysocket,NULL);
+ sock->Bind(InetSocketAddress(port_number));
+ Simulator::Schedule (Seconds(start),&StartFlow, sock, addr, port_number);
+}
+
+void* NS3Sim::get_action_from_socket(void *socket){
+ return ((MySocket *)socket)->action;
+}
+
+char NS3Sim::get_finished(void *socket){
+ return ((MySocket *)socket)->finished;
+}
+
+double NS3Sim::get_remains_from_socket(void *socket){
+ return ((MySocket *)socket)->remaining;
+}
+
+double NS3Sim::get_sent_from_socket(void *socket){
+ return ((MySocket *)socket)->sentBytes;
+}
+
+void NS3Sim::simulator_stop(double min){
+ if(min > 0.0)
+ Simulator::Stop(Seconds(min));
+ else
+ Simulator::Stop();
+}
+
+void NS3Sim::simulator_start(void){
+ XBT_DEBUG("Start simulator");
+ Simulator::Run ();
+}
+
+static void receive_callback(Ptr<Socket> localSocket){
+ Address addr;
+ localSocket->GetSockName (addr);
+ InetSocketAddress iaddr = InetSocketAddress::ConvertFrom (addr);
+ MySocket* mysocket = (MySocket*)xbt_dict_get_or_null(dict_socket,(char*)&localSocket);
+ mysocket->finished = 1;
+
+ //cout << "[" << Simulator::Now ().GetSeconds() << "] " << "Received [" << mysocket->totalBytes << "bytes], from: " << iaddr.GetIpv4 () << " port: " << iaddr.GetPort () << endl;
+ std::stringstream sstream;
+ sstream << Simulator::Now ().GetSeconds();
+ std::string s = sstream.str();
+ size_t size = s.size() + 1;
+ char * time_sec = new char[ size ];
+ strncpy( time_sec, s.c_str(), size );
+ XBT_DEBUG("Stop simulator at %s seconds",time_sec);
+ Simulator::Stop();
+}
+
+static void send_callback(Ptr<Socket> localSocket, uint32_t txSpace){
+ MySocket* mysocket = (MySocket*)xbt_dict_get_or_null(dict_socket,(char*)&localSocket);
+
+ if (mysocket->remaining == 0){
+ //all data was already buffered (and socket was already closed), just return
+ return;
+ }
+
+ uint32_t toWrite = min (mysocket->remaining, txSpace);
+ uint8_t *data = (uint8_t*)malloc(sizeof(uint8_t)*toWrite);
+ int amountSent = localSocket->Send (&data[0], toWrite, 0);
+ free (data);
+ if (amountSent > 0){
+ mysocket->bufferedBytes += amountSent;
+ mysocket->remaining -= amountSent;
+ }
+// cout << "[" << Simulator::Now ().GetSeconds() << "] " << "send_cb of F[" << mysocket->totalBytes << "] ("<< mysocket->remaining << " / " << mysocket->totalBytes << ") " << amountSent << " buffered." << endl;
+
+ if (mysocket->remaining == 0){
+ //everything was buffered to send, tell NS3 to close the socket
+ localSocket->Close();
+ }
+ return;
+}
+
+static void datasent_callback(Ptr<Socket> localSocket, uint32_t dataSent){
+ MySocket* mysocket = (MySocket*)xbt_dict_get_or_null(dict_socket,(char*)&localSocket);
+ mysocket->sentBytes += dataSent;
+// cout << "[" << Simulator::Now ().GetSeconds() << "] " << "datasent_cb of F[" << mysocket->totalBytes << "] " << dataSent << " sent." << endl;
+}
+
+
+static void StartFlow(Ptr<Socket> sock,
+ const char *to,
+ uint16_t port_number)
+{
+ InetSocketAddress serverAddr (to, port_number);
+
+ //cout << "[" << Simulator::Now().GetSeconds() << "] Starting flow to " << to << " using port " << port_number << endl;
+
+ sock->Connect(serverAddr);
+ sock->SetSendCallback (MakeCallback (&send_callback));
+ sock->SetRecvCallback (MakeCallback (&receive_callback));
+ sock->SetDataSentCallback (MakeCallback (&datasent_callback));
+}
