c-libp2p is an implementation of the libp2p specification written in C. The project is still in active development but already provides the building blocks needed for peer-to-peer networking applications.

c-libp2p uses CMake and should build on Linux, macOS and Windows. A C compiler that supports the C11 standard is required.

git clone --recursive https://github.com/Pier-Two/c-libp2p.git
cd c-libp2p

The --recursive flag ensures that all third-party submodules are fetched.

mkdir build
cmake -S . -B build
cmake --build build
ctest --test-dir build

Sanitizers can be enabled with -DENABLE_SANITIZERS=ON and additional flags in SANITIZERS. Stress tests for the TCP module are built when -DENABLE_STRESS_TESTS=ON is passed.

A recent Visual Studio with CMake support is recommended. From the x64 Native Tools command prompt run:

mkdir build
cmake -S . -B build -G "Visual Studio 16 2019" -A x64
cmake --build build --config Release
ctest --test-dir build -C Release

When building shared libraries on Windows the produced DLLs are copied next to the test executables automatically.

• src/ – library source code
• include/ – public headers
• tests/ – unit tests
• benchmarks/ – optional benchmarks
• docs/ – user guides and examples

Detailed documentation is available under docs/.

c-libp2p bundles several third-party projects under lib/:

• libtomcrypt and libtommath – LibTom License
• secp256k1 – MIT License
• sha3 – MIT-0 License
• WjCryptLib – Unlicense
• c20p1305 – MIT License
• libeddsa – Unlicense
• noise-c – MIT License

Please refer to each submodule for license details.

The code in this repository is licensed under the MIT License.