-/* Copyright (c) 2007, 2008, 2009, 2010. The SimGrid Team.
- * All rights reserved. */
+/* Copyright (c) 2007-2017. The SimGrid Team. All rights reserved. */
/* This program is free software; you can redistribute it and/or modify it
* under the terms of the license (GNU LGPL) which comes with this package. */
-#include "surf/ns3/ns3_simulator.h"
+#include "src/surf/ns3/ns3_simulator.h"
+#include "xbt/dict.h"
+#include "xbt/log.h"
+#include "xbt/sysdep.h"
-// Constructor.
-NS3Sim::NS3Sim(){
+#include <algorithm>
+
+xbt_dict_t flowFromSock = xbt_dict_new_homogeneous([](void *p) {
+ delete (SgFlow*)p;
+}); // ns3::sock -> SgFlow
+
+static void receive_callback(ns3::Ptr<ns3::Socket> socket);
+static void datasent_callback(ns3::Ptr<ns3::Socket> socket, uint32_t dataSent);
+
+XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(ns3);
+
+SgFlow::SgFlow(uint32_t totalBytes, simgrid::surf::NetworkNS3Action* action)
+{
+ totalBytes_ = totalBytes;
+ remaining_ = totalBytes;
+ action_ = action;
+}
+
+static SgFlow* getFlowFromSocket(ns3::Ptr<ns3::Socket> socket)
+{
+ return (SgFlow*)xbt_dict_get_or_null(flowFromSock, transformSocketPtr(socket));
+}
+
+static void receive_callback(ns3::Ptr<ns3::Socket> socket)
+{
+ SgFlow* flow = getFlowFromSocket(socket);
+
+ if (flow->finished_ == false) {
+ flow->finished_ = true;
+ XBT_DEBUG("recv_cb of F[%p, %p, %u]", flow, flow->action_, flow->totalBytes_);
+ XBT_DEBUG("Stop simulator at %f seconds", ns3::Simulator::Now().GetSeconds());
+ ns3::Simulator::Stop(ns3::Seconds(0.0));
+ ns3::Simulator::Run();
+ }
}
-//Destructor.
-NS3Sim::~NS3Sim(){
+
+static void WriteUntilBufferFull(ns3::Ptr<ns3::Socket> sock, uint32_t txSpace)
+{
+ SgFlow* flow = getFlowFromSocket(sock);
+
+ if (flow->remaining_ == 0) // all data was already buffered (and socket was already closed)
+ return;
+
+ /* While not all is buffered and there remain space in the buffers */
+ while (flow->bufferedBytes_ < flow->totalBytes_ && sock->GetTxAvailable() > 0) {
+
+ uint32_t toWrite = std::min({flow->remaining_, sock->GetTxAvailable()});
+ if (toWrite == 0) // buffer full
+ return;
+ int amountSent = sock->Send(0, toWrite, 0);
+
+ xbt_assert(amountSent > 0, "Since TxAvailable>0, amountSent should also >0");
+ flow->bufferedBytes_ += amountSent;
+ flow->remaining_ -= amountSent;
+
+ XBT_DEBUG("%f: sent %d bytes over flow %p (still %u to go)", ns3::Simulator::Now().GetSeconds(), amountSent, flow,
+ flow->remaining_);
+ }
+
+ if (flow->bufferedBytes_ >= flow->totalBytes_)
+ sock->Close();
+}
+
+static void datasent_callback(ns3::Ptr<ns3::Socket> socket, uint32_t dataSent)
+{
+ /* The tracing wants to know */
+ SgFlow* flow = getFlowFromSocket(socket);
+ flow->sentBytes_ += dataSent;
+ XBT_DEBUG("datasent_cb of F[%p, %p, %u] %u sent (%u total)", flow, flow->action_, flow->totalBytes_, dataSent,
+ flow->sentBytes_);
+}
+
+static void normalClose_callback(ns3::Ptr<ns3::Socket> socket)
+{
+ SgFlow* flow = getFlowFromSocket(socket);
+ XBT_DEBUG("normalClose_cb of F[%p, %p, %u]", flow, flow->action_, flow->totalBytes_);
+ receive_callback(socket);
+}
+
+static void errorClose_callback(ns3::Ptr<ns3::Socket> socket)
+{
+ SgFlow* flow = getFlowFromSocket(socket);
+ XBT_DEBUG("errorClose_cb of F[%p, %p, %u]", flow, flow->action_, flow->totalBytes_);
+ xbt_die("NS3: a socket was closed anormally");
+}
+
+static void succeededConnect_callback(ns3::Ptr<ns3::Socket> socket)
+{
+ SgFlow* flow = getFlowFromSocket(socket);
+ XBT_DEBUG("succeededConnect_cb of F[%p, %p, %u]", flow, flow->action_, flow->totalBytes_);
+}
+
+static void failedConnect_callback(ns3::Ptr<ns3::Socket> socket)
+{
+ SgFlow* mysocket = getFlowFromSocket(socket);
+ XBT_DEBUG("failedConnect_cb of F[%p, %p, %u]", mysocket, mysocket->action_, mysocket->totalBytes_);
+ xbt_die("NS3: a socket failed to connect");
+}
+
+void StartFlow(ns3::Ptr<ns3::Socket> sock, const char* to, uint16_t port_number)
+{
+ SgFlow* flow = getFlowFromSocket(sock);
+ ns3::InetSocketAddress serverAddr(to, port_number);
+
+ sock->Connect(serverAddr);
+ // tell the tcp implementation to call WriteUntilBufferFull again
+ // if we blocked and new tx buffer space becomes available
+ sock->SetSendCallback (MakeCallback(&WriteUntilBufferFull));
+ // Note when the send is over
+ sock->SetRecvCallback(MakeCallback(&receive_callback));
+ // Keep track of what was used (for the TRACING module)
+ sock->SetDataSentCallback(MakeCallback(&datasent_callback));
+ XBT_DEBUG("startFlow of F[%p, %p, %u] dest=%s port=%d", flow, flow->action_, flow->totalBytes_, to, port_number);
+
+ //WriteUntilBufferFull (sock, sock->GetTxAvailable ());
+ /*
+ sock->SetSendCallback(MakeCallback(&send_callback));
+ sock->SetConnectCallback(MakeCallback(&succeededConnect_callback), MakeCallback(&failedConnect_callback));
+ sock->SetCloseCallbacks(MakeCallback(&normalClose_callback), MakeCallback(&errorClose_callback));
+ send_callback(sock, sock->GetTxAvailable ());
+ */
+
}
