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add timestamps and window scale options

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This commit is contained in:
Tom Henderson
2015-01-23 14:37:17 -08:00
parent 3d3123d490
commit 7aaed33421
1 changed files with 27 additions and 4 deletions
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31
examples/tcp/tcp-nsc-comparison.cc
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@@ -21,6 +21,10 @@
* "DCE Cradle: Simulate Network Protocols with Real Stacks for Better Realism"
* by Hajime Tazaki, Frederic Urbani and Thierry Turlett presented at WNS3 2013
*
* By default, TCP timestamps, window scale, and SACK are disabled because
* they were not supported in ns-3 at the time of this paper. TCP timestamp
* and window scale can be enabled by command line arguments.
*
*/
#include "ns3/log.h"
@@ -42,6 +46,8 @@ double startTime = 4.0;
double stopTime = 20.0;
uint32_t m_nNodes = 2;
bool enablePcap = false;
bool enableTimestamps = false;
bool enableWindowScale = false;
int
main (int argc, char *argv[])
@@ -54,9 +60,11 @@ main (int argc, char *argv[])
CommandLine cmd;
cmd.AddValue ("stack", "choose network stack", m_stack);
cmd.AddValue ("seed", "randomize seed", m_seed);
cmd.AddValue ("nNodes", "the number of nodes in left side", m_nNodes);
cmd.AddValue ("nNodes", "the number of source and sink nodes", m_nNodes);
cmd.AddValue ("stopTime", "duration", stopTime);
cmd.AddValue ("enablePcap", "pcap", enablePcap);
cmd.AddValue ("enableTimestamps", "use TCP Timestamps option", enableTimestamps);
cmd.AddValue ("enableWindowScale", "use TCP Window Scale option", enableWindowScale);
cmd.Parse (argc, argv);
SeedManager::SetSeed (m_seed);
@@ -78,6 +86,14 @@ main (int argc, char *argv[])
if (m_stack == "ns3")
{
sock_factory = "ns3::TcpSocketFactory";
if (enableTimestamps == false)
{
Config::SetDefault ("ns3::TcpSocketBase::WindowScaling", BooleanValue (false));
}
if (enableWindowScale == false)
{
Config::SetDefault ("ns3::TcpSocketBase::Timestamp", BooleanValue (false));
}
internetStack.Install (nodes);
}
else if (m_stack == "nsc-linux")
@@ -89,10 +105,17 @@ main (int argc, char *argv[])
internetStack.Install (lefts);
internetStack.Install (rights);
//these are not implemented in ns3 tcp so disable for comparison
// at the time this program was written, these were not implemented
// in ns3 tcp, so disable for comparison
Config::Set ("/NodeList/*/$ns3::Ns3NscStack<linux2.6.26>/net.ipv4.tcp_sack", StringValue ("0"));
Config::Set ("/NodeList/*/$ns3::Ns3NscStack<linux2.6.26>/net.ipv4.tcp_timestamps", StringValue ("0"));
Config::Set ("/NodeList/*/$ns3::Ns3NscStack<linux2.6.26>/net.ipv4.tcp_window_scaling", StringValue ("0"));
if (enableTimestamps == false)
{
Config::Set ("/NodeList/*/$ns3::Ns3NscStack<linux2.6.26>/net.ipv4.tcp_timestamps", StringValue ("0"));
}
if (enableWindowScale == false)
{
Config::Set ("/NodeList/*/$ns3::Ns3NscStack<linux2.6.26>/net.ipv4.tcp_window_scaling", StringValue ("0"));
}
}
PointToPointHelper pointToPoint;