/ns3-congestion-variants

configure different congestion control algorithms

Primary LanguageC++

ns3-congestion-variants

Preparation

The tcp-client module depends on ns-3.33.
1 put the file tcp-client under ns3-allinone-3.33/ns-3.33/src
2 Change the compilor flag in ns-allinone-3.33/ns-3.33/waf-tools/cflag.py
Original version (line 22):

    self.warnings_flags = [['-Wall'], ['-Werror'], ['-Wextra']]

Changed version:

    self.warnings_flags = [['-Wall'], ['-Wno-unused-parameter'], ['-Wextra']]

3 Rebuild ns3

cd ns3-allinone-3.33/ns-3.33/  
./waf configure  
./waf build

4 copy tcp-test.cc to ns3-allinone-3.33/ns-3.33/scratch

Run

cd ns3-allinone-3.33/ns-3.33/  
./waf --run "scratch/tcp-test --cong linux-reno"

The detail to conigure a specfic congestion control algorithms can be got:

void TcpClient::SetCongestionAlgo(std::string &algo){
    m_algo=algo;
}
void TcpClient::ConfigureCongstionAlgo(){
    TypeId id;
    if(0==m_algo.compare("reno")){  
        id=TcpNewReno::GetTypeId ();  
    }else if(0==m_algo.compare("linux-reno")){  
        id=TcpLinuxReno::GetTypeId();  
    }else if(0==m_algo.compare("vegas")){  
        id=TcpVegas::GetTypeId ();  
    }else if(0==m_algo.compare("bic")){  
        id=TcpBic::GetTypeId ();  
    }else if(0==m_algo.compare("cubic")){   
        id=TcpCubic::GetTypeId();   
    }else if (0==m_algo.compare ("westwood")){ 
        id=TcpWestwood::GetTypeId ();  
    }else{   
        id=TcpLinuxReno::GetTypeId();   
    }   
    ObjectFactory congestionAlgorithmFactory;   
    congestionAlgorithmFactory.SetTypeId (id);  
    Ptr<TcpCongestionOps> algo = congestionAlgorithmFactory.Create<TcpCongestionOps> ();   
    TcpSocketBase *base=static_cast<TcpSocketBase*>(PeekPointer(m_socket));  
    base->SetCongestionControlAlgorithm (algo);  
}

Plot figures

After running Done, the collected trace can be found under ns3-allinone-3.33/ns-3.33/traces/
These script under plot folder can be used to plot figures.
1 the way to plot congestion window:
copy cwnd-plot.sh to ns3-allinone-3.33/ns-3.33/traces/

chmod  777  cwnd-plot.sh  
./cwnd-plot.sh

Results

congestion window:
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Inflight packets:
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Rtt:
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rate (sendrate) got by sender:
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rate (goodput) got by receiver:
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