doytsujin / nearby

Nearby C++ Library

The repository contains the Nearby project C++ library source code. This is not an officially supported Google product.

About the Nearby Project

Nearby Connection

Nearby Connections is a high level protocol on top of Bluetooth/WiFi that acts as a medium-agnostic socket. Devices are able to advertise, scan, and connect with one another over any shared medium (eg. BT <-> BT). Once connected, the two devices share a list of all supported mediums and attempt to upgrade to the one with the highest bandwidth (eg. BT -> WiFi). The connection is encrypted, reliable, and fully duplex. BYTE, FILE, and STREAM payloads are all supported and will be chunked & transferred internally and recombined on the receiving device. See Nearby Connections Overview for more information.

Checkout the source tree

git clone https://github.com/google/nearby
cd nearby
git submodule update --init --recursive

Building Nearby, Unit Testing and Sample Apps

We support multiple platforms including Linux, iOS & Windows.

Building for Linux

Currently we support building from source using [bazel] (https://bazel.build). Other BUILD system such as cmake may be added later.

Prerequisites:

1. Bazel
2. clang with support for c++ 17+
3. Openssl libcrypto.so (-lssl;-lcrypto).

To build the Nearby Connection Core library:

CC=clang CXX=clang++ bazel build -s --check_visibility=false //connections:core  --spawn_strategy=standalone --verbose_failures

Building for macOS and iOS

Currently we support building with Swift Package Manager.

Prerequisites:

1. Xcode. Available from Apple Store.
2. Google Protobuf Compiler (protoc). If you have homebrew installed, you can do brew install protobuf.

To build the Nearby Connection library:

swift build

Limitation

The only Medium supported is Wifi LAN.

Last Updated: December 7, 2022