push

type Handler interface {
	// Initialize the handler
	Init(jsonconf string) error

	// Check if the handler is initialized
	IsReady() bool

	// Push returns a channel that the server will use to send messages to.
	// The message will be dropped if the channel blocks.
	Push() chan<- *Receipt

	// Stop operations
	Stop()
}

type Payload struct {
	Topic       string    `json:"topic"`
	From        string    `json:"from"`
	Timestamp   time.Time `json:"ts"`
	SeqId       int       `json:"seq"`
	ContentType string    `json:"mime"`
	// Actual Data.Content of the message, if requested
	Content interface{} `json:"content,omitempty"`
}

type Receipt struct {
	// List of recipients, including those who did not receive the message
	To []Recipient `json:"to"`
	// Actual content to be delivered to the client
	Payload Payload `json:"payload"`
}

type Recipient struct {
	// Addressee
	User t.Uid `json:"user"`
	// Count of user's connections that were live when the packet was dispatched from the server
	Delivered int `json:"delivered"`
	// List of user's devices that the packet was delivered to (if known). Len(Devices) >= Delivered
	Devices []string `json:"devices,omitempty"`
}