WebSocket wrapper for Fiber v2 with events support

Based on Fiber Websocket and inspired by Socket.io

Upgrade to Fiber v2 details here

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⚙️ Installation

go get -u github.com/antoniodipinto/ikisocket

📖 ️ Documentation

// Initialize new ikisocket in the callback this will
// execute a callback that expects kws *Websocket Object
New(callback func(kws *Websocket)) func(*fiber.Ctx) error

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// Add listener callback for an event into the listeners list
On(event string, callback func(payload *EventPayload))

ikisocket public/global functions (many thanks to Daniel Morawetz)

// Emit the message to a specific socket uuids list
// Ignores all errors
EmitToList(uuids []string, message []byte)

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// Emit to a specific socket connection
EmitTo(uuid string, message []byte) error

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// Broadcast to all the active connections
// except avoid broadcasting the message to itself
Broadcast(message []byte)

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// Fire custom event on all connections
Fire(event string, data []byte) 

Supported events:

// Supported event list
const (
	// Fired when a Text/Binary message is received
	EventMessage = "message"
	// More details here:
	// @url https://developer.mozilla.org/en-US/docs/Web/API/WebSockets_API/Writing_WebSocket_servers#Pings_and_Pongs_The_Heartbeat_of_WebSockets
	EventPing = "ping"
	EventPong = "pong"
	// Fired on disconnection
	// The error provided in disconnection event
	// is defined in RFC 6455, section 11.7.
	// @url https://github.com/gofiber/websocket/blob/cd4720c435de415b864d975a9ca23a47eaf081ef/websocket.go#L192
	EventDisconnect = "disconnect"
	// Fired on first connection
	EventConnect = "connect"
	// Fired when the connection is actively closed from the server
	EventClose = "close"
	// Fired when some error appears useful also for debugging websockets
	EventError = "error"
)

Event Payload object

// Event Payload is the object that
// stores all the information about the event and
// the connection
type EventPayload struct {
	// The connection object
	Kws *Websocket
	// The name of the event
	Name string
	// Unique connection UUID
	SocketUUID string
	// Optional websocket attributes
	SocketAttributes map[string]string
	// Optional error when are fired events like
	// - Disconnect
	// - Error
	Error error
	// Data is used on Message and on Error event
	Data []byte
}

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Socket instance functions

// Set a specific attribute for the specific socket connection
func (kws *Websocket) SetAttribute(key string, attribute string)

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// Get socket connection UUID
func (kws *Websocket) GetUUID() string

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// Set socket connection UUID
func (kws *Websocket) SetUUID(uuid string)

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// Set socket connection UUID
func (kws *Websocket) SetUUID(uuid string)

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// Get a specific attribute from the socket attributes
func (kws *Websocket) GetAttribute(key string) string

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// Emit the message to a specific socket uuids list
func (kws *Websocket) EmitToList(uuids []string, message []byte) 

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// Emit to a specific socket connection
func (kws *Websocket) EmitTo(uuid string, message []byte) error

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// Broadcast to all the active connections
// except avoid broadcasting the message to itself
func (kws *Websocket) Broadcast(message []byte, except bool)

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// Fire custom event
func (kws *Websocket) Fire(event string, data []byte)

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// Emit/Write the message into the given connection
func (kws *Websocket) Emit(message []byte)

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// Actively close the connection from the server
func (kws *Websocket) Close() 

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⚡️ Examples