CAFE: Context-Aware Forwarding Engine for Autonomous Vehicular Communication

⚠️ Disclaimer: This is a custom, unsupported fork of the ndnSIM 2.x simulator.

Overview

This repository contains the codebase for CAFE, designed to support research in context-aware vehicular networking. We have open-sourced this project under the GNU General Public License v2.0 to ensure the reproducibility of our published results and to encourage further academic exploration.

Prerequisites

This project has been tested and verified on the following platforms:

• Ubuntu 22.04 (amd64)
• Ubuntu 24.04 (amd64)

1. SUMO Setup

Step 1: Install Dependencies

sudo apt update
sudo apt-get install cmake python3 g++ libxerces-c-dev libfox-1.6-dev libgdal-dev libproj-dev libgl2ps-dev swig

Step 2: Clone and Build SUMO

git clone --recursive https://github.com/eclipse/sumo
export SUMO_HOME="$HOME/sumo"
mkdir -p sumo/build_config/cmake-build
cd sumo/build_config/cmake-build
cmake ../..
make -j$(nproc)

Step 3: Configure Environment

Add the following to your ~/.bashrc:

export SUMO_HOME="$HOME/sumo"
export PATH=$PATH:"$SUMO_HOME/bin"

Apply the changes:

source ~/.bashrc

2. CAFE Setup

Step 1: Install Dependencies

sudo apt install build-essential libsqlite3-dev libboost-all-dev libssl-dev git python3-setuptools castxml

Step 2: Clone and Build CAFE

git clone https://github.com/solvedbiscuit71/CAFE.git
cd CAFE
CXXFLAGS="-std=c++17" ./waf configure --disable-python --disable-examples
./waf

3. NetAnim Setup (Optional)

Step 1: Install Dependencies

sudo apt install -y mercurial qtcreator qtbase5-dev qtchooser qt5-qmake cmake qtbase5-dev-tools

Step 2: Build NetAnim

cd netanim
make clean
qmake NetAnim.pro
make

Reproducing Results

To recreate the results presented in the paper (specifically Table 4), run the provided scenario script:

python3 scripts/scene.py

This will generate a result.csv file.

Note on Broadcast Flooding

By default, the simulation includes context-aware logic. To replicate the broadcast flooding baseline, you must manually disable the geobroadcast logic:

1. Open src/ndnSIM/NFD/daemon/fw/caf-forwarder.cpp.
2. Comment out the relevant geobroadcast logic sections.
3. Re-run ./waf and the simulation script.