How to Start Session Layer Projects using NS3

To create the Session Layer in the OSI model handled the sessions among applications, assuring the proper synchronization, dialog control, and session management. Although NS3 is mostly focused on Layers 2 through 4 such as Data Link, Network, and Transport, Session Layer functionality could be executed or replicated at the application level through handling their session-oriented protocols such as HTTP, FTP, SIP, or custom session management mechanisms.

Steps to Start Session Layer Projects using NS3

  1. Understand Session Layer Projects
  • Key Features to Explore:
    • Session Establishment and Termination: we maintain the connection setting and teardown.
    • Session Synchronization: Handle the data flow and recovery from interruptions.
    • Dialog Control: It control the concurrent sessions and interactions.
    • Protocols: Replicate or execute the session-oriented protocols such as SIP, RPC, or custom designs.
  • Applications:
    • We replicate the real-world applications such as video conferencing, VoIP, or file sharing.
    • Validate the session management and dialog control mechanisms.
    • Analysis the performance metrics such as session configure the delay and session reliability.
  1. Set Up NS3
  1. Install NS3:

sudo apt update

sudo apt install g++ python3 git cmake

git clone https://gitlab.com/nsnam/ns-3-dev.git

cd ns-3-dev

./waf configure

./waf build

  1. Verify Installation:

./waf –run scratch/my-first

  1. Plan Your Session Layer Project
  1. Choose a Session Type:
    • We select the Single or multiple concurrent sessions.
  2. Define Protocol or Application:
    • Utilized the existing protocols such as SIP for VoIP or develop a custom session protocol.
  3. Set Metrics:
    • We calculate the session setup time, reliability, and throughput.
  1. Example: Session Management with SIP

This sample establish the custom SIP-like session management application for VoIP.

Code:

#include “ns3/core-module.h”

#include “ns3/network-module.h”

#include “ns3/internet-module.h”

#include “ns3/applications-module.h”

using namespace ns3;

class SessionApp : public Application {

public:

SessionApp() {}

virtual ~SessionApp() {}

void Setup(Address peerAddress, uint16_t port) {

m_peerAddress = peerAddress;

m_peerPort = port;

}

protected:

virtual void StartApplication() override {

NS_LOG_UNCOND(“Session established with peer at ” << m_peerAddress);

Simulator::Schedule(Seconds(5.0), &SessionApp::SendData, this);

}

virtual void StopApplication() override {

NS_LOG_UNCOND(“Session terminated with peer at ” << m_peerAddress);

}

private:

void SendData() {

NS_LOG_UNCOND(“Sending session data to ” << m_peerAddress);

}

Address m_peerAddress;

uint16_t m_peerPort;

};

int main() {

LogComponentEnable(“SessionLayerExample”, LOG_LEVEL_INFO);

// Create nodes

NodeContainer nodes;

nodes.Create(2);

// Configure point-to-point link

PointToPointHelper pointToPoint;

pointToPoint.SetDeviceAttribute(“DataRate”, StringValue(“10Mbps”));

pointToPoint.SetChannelAttribute(“Delay”, StringValue(“5ms”));

NetDeviceContainer devices = pointToPoint.Install(nodes);

// Install Internet stack

InternetStackHelper stack;

stack.Install(nodes);

// Assign IP addresses

Ipv4AddressHelper ipv4;

ipv4.SetBase(“10.1.1.0”, “255.255.255.0”);

Ipv4InterfaceContainer interfaces = ipv4.Assign(devices);

// Configure session application

Ptr<SessionApp> clientApp = CreateObject<SessionApp>();

clientApp->Setup(InetSocketAddress(interfaces.GetAddress(1), 8080), 8080);

nodes.Get(0)->AddApplication(clientApp);

clientApp->SetStartTime(Seconds(1.0));

clientApp->SetStopTime(Seconds(10.0));

Simulator::Run();

Simulator::Destroy();

return 0;

}

  1. Key Features of the Code
  1. Session Establishment:
    • It logs create the session among two nodes.
  2. Data Transfer:
    • Transmits the data at regular intervals during the session.
  3. Session Termination:
    • Termination of logs and session later a duration for a set.
  1. Advanced Features

Concurrent Sessions

Replicate the multiple concurrent sessions among multiple node pairs:

clientApp1->Setup(InetSocketAddress(interfaces.GetAddress(1), 8080), 8080);

clientApp2->Setup(InetSocketAddress(interfaces.GetAddress(2), 8080), 8080);

Synchronization Mechanisms

Execute the session recovery or synchronization later a disruption:

void HandleDisruption() {

NS_LOG_UNCOND(“Session disrupted. Attempting to recover…”);

Simulator::Schedule(Seconds(1.0), &SessionApp::SendData, this);

}

SIP Protocol Emulation

Estimate the SIP message types such as INVITE, ACK, BYE for session control:

void SendInvite() {

NS_LOG_UNCOND(“Sending SIP INVITE to ” << m_peerAddress);

Simulator::Schedule(Seconds(1.0), &SessionApp::SendAck, this);

}

void SendAck() {

NS_LOG_UNCOND(“Received ACK for SIP INVITE.”);

}

  1. Testing and Debugging
  1. Enable Logging:

NS_LOG=”SessionLayerExample” ./waf –run session-layer

  1. Monitor Sessions:
    • Utilized the logs and monitor session to create the data transfer, and termination.
  2. Packet Traces: Enable .pcap tracing to analyse packet-level interactions:

pointToPoint.EnablePcapAll(“session-layer”);

Through the complete process, you can acquire the simulation and execution process regarding the Session layer project offered in it using NS3 tool. We will plan to offer the more information regarding the Session layer project in another manual.

Our team of developers is proficient in session-oriented protocols, including HTTP, FTP, SIP, and tailored session management solutions. We are here to assist you in generating unique project ideas and topics. To initiate your Session Layer Projects utilizing NS3, please forward all relevant project details to phdprojects.org. We are committed to providing outstanding results. Share your project information with us, and we will support you in achieving exceptional outcomes.