Part of the internals of Rigelian are available as open source software.
ConnectorProtocol is a generic protocol specification to control a network based music player for Swift. The protocol abstracts a player specific implementation from a client implementation, which allows to have a single client that supports multiple player types.
MPDConnector is a full implementation of the ConnectorProtocol interface specification, based on libmpdclient. It can be used to control a mpd-based music player.
TemplateConnector is an empty implementation of the ConnectorProtocol interface specification. It can be used as the starting point for a player specific implementation of ConnectorProtocol.
RxNetService is a Reactive extension for NetServiceBrowser, to simplify network service discovery.