fujiz / ns-3 Goto Github PK

Thanks for your answer。
And you have changed the attribute "Limit" in pfifofastqueuedisc from 100 to 1000.Thus the codes cannot run because the queue limit in queue.cc is only 100.
The second problem is that the server can send back ECN .But the client cannot match the conditions into DecreaseWindow( );

Excuse me，I want to know your "m_ecnState“ in dctcp-soket.cc. The value maybe always equal 0,that mean the protocol is not ecn awareness. thank you very much。

In the handshake phase, L3.5 should check the TCP header and record whether that flow is enc-capable. Regardless of ecn-capability of initial TCP, L3.5 shoud make it sure that the new TCP header set to down targets are ecn-enabled, i.e., with ECN bit set. In this case, the receiver will always think that the sender is enc-capable. However, the receiver might be ecn-incapable, which should also be handled properly.

Hello.
I have cloned your repo for last commit at Apr 9, 2017, but i found there is no "dcn" directory in the "src" directory and the error occurred while compiling.
"../scratch/dctcp-convergence-test.cc:8:28: fatal error: ns3/dcn-module.h: No such file or directory"
I fixed this problem by copy an "dcn" directory from previous commit. I think its just a mistake and you will fix it soon. :)

How to count the number of packets that the clients sent.

hello，
I have found that you set the Tc as Bm_rtt->GetEstimate()->GetSeconds()/(3.0m_tcb->m_cWnd()->Get()/4.0);
and in D2TCP,the Tc is B/(3W/4);
so I think the EstimatedRTT is not needed and the m_cWnd() need to change to Window();
thanks

By default, in macOS the python binary locates in /usr/bin/python (version 2), so i think in macOS, the waf file should run by /usr/bin/python instead of /usr/bin/python2

When the buffer area occupies more than a certain threshold, the TCP pakets' ECN position should be mark, but I don't understand how the program achieves it , please tell me , thank you.

Hello，
I have ran the codes about Dctcp，but i found that the function DecreaseWindow( ) in dctcpsocket & tcp-socket-base has never used . Then I want to know how to realize the Dctcp about the m_Cwd.

The second questions is about the differences between the server and the switch .

The third is about the traffic .You changed the app start time and stop time in different nodes .What is the traffic module.

Thanks a lot

Excuse me,when I tested the dctcp program ,I founded the function the initial m_tcb->m_ssThresh's value is (2^32)-1 ,but I can't founded where the SetInitialSSThresh (uint32_t threshold) is excuted.,and can't understand why the m_tcb->m_ssThresh's value is UINT32_MAX.
Thank you.