This package is an implementation of remote command execution over HTTP. It is intended to be used for remotely controlling devices hidden behind firewalls.

This repository contains:

• client implementation of client service (written in C).
• server implementation server service (written in golang).
• ca tools for building simple PKI for testing.

System architecture is based on the idea that client application behaviour must be relatively simple and strictly defined. Client must periodically send HTTP request to a predefined server URL. Response for this request includes a time to wait before making next request and optionally a command to be executed on the client. When command is executed client must inform the server about execution results by generating POST request to the same predefined server URL.

Data exchanged between server and client is encoded using JSON.

Httprc system uses x509 PKI and TLS for mutual client-server and server-client authentication. Each client must have private key and certificate signed by the CA that server trust, and server must have a private key and certificate signed by the CA trusted by the clients.

Directory ca contains scripts to build to build simple PKI system (CA, server, client key pairs and certificates).