server

Documentation

Overview

packet server provides a MQTT 3.1.1 compliant MQTT server.

Index

• Constants
• Variables
• type Server
  • func New() *Server
  • func (s *Server) AddListener(listener listeners.Listener, config *listeners.Config) error
  • func (s *Server) AddStore(p persistence.Store) error
  • func (s *Server) Close() error
  • func (s *Server) EstablishConnection(lid string, c net.Conn, ac auth.Controller) error
  • func (s *Server) ResendClientInflight(cl *clients.Client, force bool) error
  • func (s *Server) Serve() error

Constants

const (
	Version = "1.0.0" // the server version.

)

Variables

var (
	ErrListenerIDExists     = errors.New("Listener id already exists")
	ErrReadConnectInvalid   = errors.New("Connect packet was not valid")
	ErrConnectNotAuthorized = errors.New("Connect packet was not authorized")
	ErrInvalidTopic         = errors.New("Cannot publish to $ and $SYS topics")

	// SysTopicInterval is the number of milliseconds between $SYS topic publishes.
	SysTopicInterval time.Duration = 30000
)

Types

type Server

type Server struct {
	Listeners *listeners.Listeners // listeners are network interfaces which listen for new connections.
	Clients   *clients.Clients     // clients which are known to the broker.
	Topics    *topics.Index        // an index of topic filter subscriptions and retained messages.
	System    *system.Info         // values about the server commonly found in $SYS topics.
	Store     persistence.Store    // a persistent storage backend if desired.
	// contains filtered or unexported fields
}

Server is an MQTT broker server. It should be created with server.New() in order to ensure all the internal fields are correctly populated.

func New

func New() *Server

New returns a new instance of an MQTT broker.

func (*Server) AddListener

func (s *Server) AddListener(listener listeners.Listener, config *listeners.Config) error

AddListener adds a new network listener to the server.

func (*Server) AddStore

func (s *Server) AddStore(p persistence.Store) error

AddStore assigns a persistent storage backend to the server. This must be called before calling server.Server().

func (*Server) Close

func (s *Server) Close() error

Close attempts to gracefully shutdown the server, all listeners, clients, and stores.

func (*Server) EstablishConnection

func (s *Server) EstablishConnection(lid string, c net.Conn, ac auth.Controller) error

EstablishConnection establishes a new client when a listener accepts a new connection.

func (*Server) ResendClientInflight

func (s *Server) ResendClientInflight(cl *clients.Client, force bool) error

ResendClientInflight attempts to resend all undelivered inflight messages to a client.

func (*Server) Serve

func (s *Server) Serve() error

Serve starts the event loops responsible for establishing client connections on all attached listeners, and publishing the system topics.