The goal of the Docker Flow Proxy project is to provide an easy way to reconfigure proxy every time a new service is deployed, or when a service is scaled. It does not try to "reinvent the wheel", but to leverage the existing leaders and combine them through an easy to use integration. It uses HAProxy as a proxy and adds custom logic that allows on-demand reconfiguration.
Since the Docker 1.12 release, Docker Flow Proxy supports two modes. The default mode is designed to work with any setup and requires Consul and Registrator. The swarm mode aims to leverage the benefits that come with Docker Swarm and new networking introduced in the 1.12 release. The later mode (swarm) does not have any dependency but Docker Engine. The swarm mode is recommended for all who use Docker Swarm features introduced in v1.12.
Please visit the project documentation for more info or join the DevOps20 Slack channel if you have any questions, suggestions, or problems.