[NS3] send a maximum of 1024 bytes per Send

details:
- this is the way to observe the known TCP behavior
where bandwidth is equally shared among the flows

diff --git a/src/surf/ns3/ns3_simulator.cc b/src/surf/ns3/ns3_simulator.cc
index d7b29c1..99e93d1 100644 (file)
--- a/src/surf/ns3/ns3_simulator.cc
+++ b/src/surf/ns3/ns3_simulator.cc
@@ -122,7 +122,8 @@ static void send_callback(Ptr<Socket> localSocket, uint32_t txSpace){
          return;
        }
 
-       uint32_t toWrite = min (mysocket->remaining, txSpace);
+       uint32_t packetSize = 1024;
+       uint32_t toWrite = min (mysocket->remaining, packetSize);
        uint8_t *data = (uint8_t*)malloc(sizeof(uint8_t)*toWrite);
        int amountSent = localSocket->Send (&data[0], toWrite, 0);
        free (data);