An implementation of Kademlia DHT and Blockchain in C++

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Key Features • Project Documentation • Getting Started • Contributing • Credits •

Key Features

This is work in progress, but the code is heavily documented. So far, the DHT is pretty stable with a full implementation of the Kademlia routing table and the Kademlia protocol, with several of the optimizations recommended in the paper.

Project Documentation

We have detailed guides for setting up an efficient development environment, the development process, project structure, etc. Take a look at the available guides here.

In addition to that, specific documentation for the command line parser, its usage and APIs, are provided in the project GitHub Pages site here.

Getting Started

It is strongly recommended that you take some time to browse the project documentation to familiarize yourself with its structure and development workflows.

Make sure you have a C++ compiler with C++-17 capabilities at least. Gnu, Clang and MSVC all can do that with a recent version.

git clone --recurse-submodules -j4 https://github.com/abdes/blocxxi.git

mkdir _build && cd _build && cmake .. && cmake --build .

or just use one of the predefined CMake presets. Detailed instructions are in the project documentation, and many useful commands are listed here.

CMake configurable build options

# Project options
option(BUILD_SHARED_LIBS        "Build shared instead of static libraries."              ON)
option(ASAP_BUILD_TESTS         "Build tests."                                           OFF)
option(ASAP_BUILD_EXAMPLES      "Build examples."                                        OFF)
option(ASAP_WITH_GOOGLE_ASAN    "Instrument code with address sanitizer"                 OFF)
option(ASAP_WITH_GOOGLE_UBSAN   "Instrument code with undefined behavior sanitizer"      OFF)
option(ASAP_WITH_GOOGLE_TSAN    "Instrument code with thread sanitizer"                  OFF)
option(ASAP_WITH_VALGRIND       "Builds targets with valgrind profilers added"           OFF)

Contributing

If you would like to contribute code you can do so through GitHub by forking the repository and sending a pull request. When submitting code, please make every effort to follow existing conventions and style in order to keep the code as readable as possible.

By contributing your code, you agree to license your contribution under the terms of the BSD-3-Clause or a more permissive license. All files are released with the BSD-3-Clause license.

Read the developer guides.

Submitting a PR

For every PR there should be an accompanying issue which the PR solves
The PR itself should only contain code which is the solution for the given issue
If you are a first time contributor check if there is a suitable issue for you

Getting updates from upstream `asap`

In order to pull and merge updates from the upstream project, make sure to add it to the repo's remotes and disable pulling/merging tags from the upstream. We want tags to be limited to those made in this repo, not in the upstream.

git remote add upstream https://github.com/abdes/asap.git
git config remote.upstream.tagopt --no-tags

Credits

The multitude of other open-source projects used to implement this project or to get inspiration - credits in the source code or the documentation as appropriate

abdes/blocxxi