New returns a new instance of MQTT server with no options.

NewServer returns a new instance of an MQTT broker with optional values where applicable.

Single The running environment is single node or cluster mode.

Version indicates the current server version.

ErrConnectNotAuthorized indicates that the connection packet had incorrect authentication parameters.

ErrInvalidTopic indicates that the specified topic was not valid.

ErrListenerIDExists indicates that a listener with the same id already exists.

ErrReadConnectInvalid indicates that the connection packet was invalid.

ErrRejectPacket indicates that a packet should be dropped instead of processed.

SysTopicInterval is the number of milliseconds between $SYS topic publishes.

Options contains configurable options for the server.

Server is an MQTT broker server.