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use the same connection structure for both client and server-side connections interfaces, the 'Connection' interface could be changed to 'ServerConn' but this would produce breaking naming change to the iris users, so keep it as it's.

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Former-commit-id: 3440871b368709e33d2d2a5080c66f7ad9338970
This commit is contained in:
Gerasimos (Makis) Maropoulos 2019-02-10 17:16:43 +02:00
parent 280872fd59
commit 946c100f7d
5 changed files with 258 additions and 296 deletions
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12
_examples/websocket/go-client/client/main.go
View File

@ -21,21 +21,21 @@ $ go run main.go
>> hi! >> hi!
*/ */
func main() { func main() {
conn, err := websocket.Dial(url, websocket.DefaultEvtMessageKey) c, err := websocket.Dial(url, websocket.ConnectionConfig{})
if err != nil { if err != nil {
panic(err) panic(err)
} }
conn.OnError(func(err error) { c.OnError(func(err error) {
fmt.Printf("error: %v", err) fmt.Printf("error: %v", err)
}) })
conn.OnDisconnect(func() { c.OnDisconnect(func() {
fmt.Println("Server was force-closed[see ../server/main.go#L19] this connection after 20 seconds, therefore I am disconnected.") fmt.Println("Server was force-closed[see ../server/main.go#L17] this connection after 20 seconds, therefore I am disconnected.")
os.Exit(0) os.Exit(0)
}) })
conn.On("chat", func(message string) { c.On("chat", func(message string) {
fmt.Printf("\n%s\n", message) fmt.Printf("\n%s\n", message)
}) })
@ -51,7 +51,7 @@ func main() {
break break
} }
conn.Emit("chat", msgToSend) c.Emit("chat", msgToSend)
} }
fmt.Println("Terminated.") fmt.Println("Terminated.")

4
_examples/websocket/go-client/server/main.go
View File

@ -11,8 +11,6 @@ import (
func main() { func main() {
app := iris.New() app := iris.New()
ws := websocket.New(websocket.Config{}) ws := websocket.New(websocket.Config{})
app.Get("/socket", ws.Handler())
ws.OnConnection(func(c websocket.Connection) { ws.OnConnection(func(c websocket.Connection) {
go func() { go func() {
<-time.After(20 * time.Second) <-time.After(20 * time.Second)
@ -28,5 +26,7 @@ func main() {
}) })
}) })
app.Get("/socket", ws.Handler())
app.Run(iris.Addr(":8080")) app.Run(iris.Addr(":8080"))
} }

214
websocket/client.go
View File

@ -1,214 +0,0 @@
package websocket
import (
"bytes"
"strconv"
"strings"
"sync"
"sync/atomic"
"github.com/gorilla/websocket"
)
// Dial opens a new client connection to a WebSocket.
func Dial(url, evtMessagePrefix string) (ws *ClientConn, err error) {
if !strings.HasPrefix(url, "ws://") {
url = "ws://" + url
}
conn, _, err := websocket.DefaultDialer.Dial(url, nil)
if err != nil {
return nil, err
}
return NewClientConn(conn, evtMessagePrefix), nil
}
type ClientConn struct {
underline UnderlineConnection // TODO make it using gorilla's one, because the 'startReader' will not know when to stop otherwise, we have a fixed length currently...
messageType int
serializer *messageSerializer
onErrorListeners []ErrorFunc
onDisconnectListeners []DisconnectFunc
onNativeMessageListeners []NativeMessageFunc
onEventListeners map[string][]MessageFunc
writerMu sync.Mutex
disconnected uint32
}
func NewClientConn(conn UnderlineConnection, evtMessagePrefix string) *ClientConn {
if evtMessagePrefix == "" {
evtMessagePrefix = DefaultEvtMessageKey
}
c := &ClientConn{
underline: conn,
serializer: newMessageSerializer([]byte(evtMessagePrefix)),
onErrorListeners: make([]ErrorFunc, 0),
onDisconnectListeners: make([]DisconnectFunc, 0),
onNativeMessageListeners: make([]NativeMessageFunc, 0),
onEventListeners: make(map[string][]MessageFunc, 0),
}
c.SetBinaryMessages(false)
go c.startReader()
return c
}
func (c *ClientConn) SetBinaryMessages(binaryMessages bool) {
if binaryMessages {
c.messageType = websocket.BinaryMessage
} else {
c.messageType = websocket.TextMessage
}
}
func (c *ClientConn) startReader() {
defer c.Disconnect()
for {
_, data, err := c.underline.ReadMessage()
if err != nil {
if websocket.IsUnexpectedCloseError(err, websocket.CloseGoingAway, websocket.CloseAbnormalClosure) {
c.FireOnError(err)
}
break
} else {
c.messageReceived(data)
}
}
}
func (c *ClientConn) messageReceived(data []byte) error {
if bytes.HasPrefix(data, c.serializer.prefix) {
// is a custom iris message.
receivedEvt := c.serializer.getWebsocketCustomEvent(data)
listeners, ok := c.onEventListeners[string(receivedEvt)]
if !ok || len(listeners) == 0 {
return nil // if not listeners for this event exit from here
}
customMessage, err := c.serializer.deserialize(receivedEvt, data)
if customMessage == nil || err != nil {
return err
}
for i := range listeners {
if fn, ok := listeners[i].(func()); ok { // its a simple func(){} callback
fn()
} else if fnString, ok := listeners[i].(func(string)); ok {
if msgString, is := customMessage.(string); is {
fnString(msgString)
} else if msgInt, is := customMessage.(int); is {
// here if server side waiting for string but client side sent an int, just convert this int to a string
fnString(strconv.Itoa(msgInt))
}
} else if fnInt, ok := listeners[i].(func(int)); ok {
fnInt(customMessage.(int))
} else if fnBool, ok := listeners[i].(func(bool)); ok {
fnBool(customMessage.(bool))
} else if fnBytes, ok := listeners[i].(func([]byte)); ok {
fnBytes(customMessage.([]byte))
} else {
listeners[i].(func(interface{}))(customMessage)
}
}
} else {
// it's native websocket message
for i := range c.onNativeMessageListeners {
c.onNativeMessageListeners[i](data)
}
}
return nil
}
func (c *ClientConn) OnMessage(cb NativeMessageFunc) {
c.onNativeMessageListeners = append(c.onNativeMessageListeners, cb)
}
func (c *ClientConn) On(event string, cb MessageFunc) {
if c.onEventListeners[event] == nil {
c.onEventListeners[event] = make([]MessageFunc, 0)
}
c.onEventListeners[event] = append(c.onEventListeners[event], cb)
}
func (c *ClientConn) OnError(cb ErrorFunc) {
c.onErrorListeners = append(c.onErrorListeners, cb)
}
func (c *ClientConn) FireOnError(err error) {
for _, cb := range c.onErrorListeners {
cb(err)
}
}
func (c *ClientConn) OnDisconnect(cb DisconnectFunc) {
c.onDisconnectListeners = append(c.onDisconnectListeners, cb)
}
func (c *ClientConn) Disconnect() error {
if c == nil || !atomic.CompareAndSwapUint32(&c.disconnected, 0, 1) {
return ErrAlreadyDisconnected
}
err := c.underline.WriteMessage(websocket.CloseMessage, websocket.FormatCloseMessage(websocket.CloseNormalClosure, ""))
if err != nil {
err = c.underline.Close()
}
if err == nil {
for i := range c.onDisconnectListeners {
c.onDisconnectListeners[i]()
}
}
return err
}
func (c *ClientConn) EmitMessage(nativeMessage []byte) error {
return c.writeDefault(nativeMessage)
}
func (c *ClientConn) Emit(event string, data interface{}) error {
b, err := c.serializer.serialize(event, data)
if err != nil {
return err
}
return c.EmitMessage(b)
}
// Write writes a raw websocket message with a specific type to the client
// used by ping messages and any CloseMessage types.
func (c *ClientConn) Write(websocketMessageType int, data []byte) error {
// for any-case the app tries to write from different goroutines,
// we must protect them because they're reporting that as bug...
c.writerMu.Lock()
// .WriteMessage same as NextWriter and close (flush)
err := c.underline.WriteMessage(websocketMessageType, data)
c.writerMu.Unlock()
if err != nil {
// if failed then the connection is off, fire the disconnect
c.Disconnect()
}
return err
}
// writeDefault is the same as write but the message type is the configured by c.messageType
// if BinaryMessages is enabled then it's raw []byte as you expected to work with protobufs
func (c *ClientConn) writeDefault(data []byte) error {
return c.Write(c.messageType, data)
}

319
websocket/connection.go
View File

@ -6,13 +6,37 @@ import (
"io" "io"
"net" "net"
"strconv" "strconv"
"strings"
"sync" "sync"
"sync/atomic"
"time" "time"
"github.com/gorilla/websocket" "github.com/gorilla/websocket"
"github.com/kataras/iris/context" "github.com/kataras/iris/context"
) )
const (
// TextMessage denotes a text data message. The text message payload is
// interpreted as UTF-8 encoded text data.
TextMessage = websocket.TextMessage
// BinaryMessage denotes a binary data message.
BinaryMessage = websocket.BinaryMessage
// CloseMessage denotes a close control message. The optional message
// payload contains a numeric code and text. Use the FormatCloseMessage
// function to format a close message payload.
CloseMessage = websocket.CloseMessage
// PingMessage denotes a ping control message. The optional message payload
// is UTF-8 encoded text.
PingMessage = websocket.PingMessage
// PongMessage denotes a ping control message. The optional message payload
// is UTF-8 encoded text.
PongMessage = websocket.PongMessage
)
type ( type (
connectionValue struct { connectionValue struct {
key []byte key []byte
@ -136,51 +160,27 @@ type (
PingFunc func() PingFunc func()
// PongFunc is the callback which fires on pong message received // PongFunc is the callback which fires on pong message received
PongFunc func() PongFunc func()
// Connection is the front-end API that you will use to communicate with the client side // Connection is the front-end API that you will use to communicate with the client side,
// it is the server-side connection.
Connection interface { Connection interface {
// Emitter implements EmitMessage & Emit ClientConnection
Emitter
// Err is not nil if the upgrader failed to upgrade http to websocket connection. // Err is not nil if the upgrader failed to upgrade http to websocket connection.
Err() error Err() error
// ID returns the connection's identifier // ID returns the connection's identifier
ID() string ID() string
// Server returns the websocket server instance // Server returns the websocket server instance
// which this connection is listening to. // which this connection is listening to.
// //
// Its connection-relative operations are safe for use. // Its connection-relative operations are safe for use.
Server() *Server Server() *Server
// Write writes a raw websocket message with a specific type to the client
// used by ping messages and any CloseMessage types.
Write(websocketMessageType int, data []byte) error
// Context returns the (upgraded) context.Context of this connection // Context returns the (upgraded) context.Context of this connection
// avoid using it, you normally don't need it, // avoid using it, you normally don't need it,
// websocket has everything you need to authenticate the user BUT if it's necessary // websocket has everything you need to authenticate the user BUT if it's necessary
// then you use it to receive user information, for example: from headers // then you use it to receive user information, for example: from headers
Context() context.Context Context() context.Context
// OnDisconnect registers a callback which is fired when this connection is closed by an error or manual
OnDisconnect(DisconnectFunc)
// OnError registers a callback which fires when this connection occurs an error
OnError(ErrorFunc)
// OnPing registers a callback which fires on each ping
OnPing(PingFunc)
// OnPong registers a callback which fires on pong message received
OnPong(PongFunc)
// FireOnError can be used to send a custom error message to the connection
//
// It does nothing more than firing the OnError listeners. It doesn't send anything to the client.
FireOnError(err error)
// To defines on what "room" (see Join) the server should send a message // To defines on what "room" (see Join) the server should send a message
// returns an Emmiter(`EmitMessage` & `Emit`) to send messages. // returns an Emmiter(`EmitMessage` & `Emit`) to send messages.
To(string) Emitter To(string) Emitter
// OnMessage registers a callback which fires when native websocket message received
OnMessage(NativeMessageFunc)
// On registers a callback to a particular event which is fired when a message to this event is received
On(string, MessageFunc)
// Join registers this connection to a room, if it doesn't exist then it creates a new. One room can have one or more connections. One connection can be joined to many rooms. All connections are joined to a room specified by their `ID` automatically. // Join registers this connection to a room, if it doesn't exist then it creates a new. One room can have one or more connections. One connection can be joined to many rooms. All connections are joined to a room specified by their `ID` automatically.
Join(string) Join(string)
// IsJoined returns true when this connection is joined to the room, otherwise false. // IsJoined returns true when this connection is joined to the room, otherwise false.
@ -201,9 +201,6 @@ type (
// after the "On" events IF server's `Upgrade` is used, // after the "On" events IF server's `Upgrade` is used,
// otherise you don't have to call it because the `Handler()` does it automatically. // otherise you don't have to call it because the `Handler()` does it automatically.
Wait() Wait()
// Disconnect disconnects the client, close the underline websocket conn and removes it from the conn list
// returns the error, if any, from the underline connection
Disconnect() error
// SetValue sets a key-value pair on the connection's mem store. // SetValue sets a key-value pair on the connection's mem store.
SetValue(key string, value interface{}) SetValue(key string, value interface{})
// GetValue gets a value by its key from the connection's mem store. // GetValue gets a value by its key from the connection's mem store.
@ -216,20 +213,51 @@ type (
GetValueInt(key string) int GetValueInt(key string) int
} }
// ClientConnection is the client-side connection interface. Server shares some of its methods but the underline actions differs.
ClientConnection interface {
Emitter
// Write writes a raw websocket message with a specific type to the client
// used by ping messages and any CloseMessage types.
Write(websocketMessageType int, data []byte) error
// OnMessage registers a callback which fires when native websocket message received
OnMessage(NativeMessageFunc)
// On registers a callback to a particular event which is fired when a message to this event is received
On(string, MessageFunc)
// OnError registers a callback which fires when this connection occurs an error
OnError(ErrorFunc)
// OnPing registers a callback which fires on each ping
OnPing(PingFunc)
// OnPong registers a callback which fires on pong message received
OnPong(PongFunc)
// FireOnError can be used to send a custom error message to the connection
//
// It does nothing more than firing the OnError listeners. It doesn't send anything to the client.
FireOnError(err error)
// OnDisconnect registers a callback which is fired when this connection is closed by an error or manual
OnDisconnect(DisconnectFunc)
// Disconnect disconnects the client, close the underline websocket conn and removes it from the conn list
// returns the error, if any, from the underline connection
Disconnect() error
}
connection struct { connection struct {
err error err error
underline UnderlineConnection underline UnderlineConnection
id string config ConnectionConfig
messageType int defaultMessageType int
disconnected bool serializer *messageSerializer
onDisconnectListeners []DisconnectFunc id string
onRoomLeaveListeners []LeaveRoomFunc
onErrorListeners []ErrorFunc onErrorListeners []ErrorFunc
onPingListeners []PingFunc onPingListeners []PingFunc
onPongListeners []PongFunc onPongListeners []PongFunc
onNativeMessageListeners []NativeMessageFunc onNativeMessageListeners []NativeMessageFunc
onEventListeners map[string][]MessageFunc onEventListeners map[string][]MessageFunc
started bool onRoomLeaveListeners []LeaveRoomFunc
onDisconnectListeners []DisconnectFunc
disconnected uint32
started bool
// these were maden for performance only // these were maden for performance only
self Emitter // pre-defined emitter than sends message to its self client self Emitter // pre-defined emitter than sends message to its self client
broadcast Emitter // pre-defined emitter that sends message to all except this broadcast Emitter // pre-defined emitter that sends message to all except this
@ -250,33 +278,49 @@ type (
var _ Connection = &connection{} var _ Connection = &connection{}
// CloseMessage denotes a close control message. The optional message func newConnection(underlineConn UnderlineConnection, cfg ConnectionConfig) *connection {
// payload contains a numeric code and text. Use the FormatCloseMessage cfg = cfg.Validate()
// function to format a close message payload.
//
// Use the `Connection#Disconnect` instead.
const CloseMessage = websocket.CloseMessage
func newConnection(ctx context.Context, s *Server, underlineConn UnderlineConnection, id string) *connection {
c := &connection{ c := &connection{
underline: underlineConn, underline: underlineConn,
id: id, config: cfg,
messageType: websocket.TextMessage, serializer: newMessageSerializer(cfg.EvtMessagePrefix),
onDisconnectListeners: make([]DisconnectFunc, 0), defaultMessageType: websocket.TextMessage,
onRoomLeaveListeners: make([]LeaveRoomFunc, 0),
onErrorListeners: make([]ErrorFunc, 0), onErrorListeners: make([]ErrorFunc, 0),
onPingListeners: make([]PingFunc, 0),
onPongListeners: make([]PongFunc, 0),
onNativeMessageListeners: make([]NativeMessageFunc, 0), onNativeMessageListeners: make([]NativeMessageFunc, 0),
onEventListeners: make(map[string][]MessageFunc, 0), onEventListeners: make(map[string][]MessageFunc, 0),
onPongListeners: make([]PongFunc, 0), onDisconnectListeners: make([]DisconnectFunc, 0),
started: false, disconnected: 0,
ctx: ctx,
server: s,
} }
if s.config.BinaryMessages { if cfg.BinaryMessages {
c.messageType = websocket.BinaryMessage c.defaultMessageType = websocket.BinaryMessage
} }
return c
}
func newServerConnection(ctx context.Context, s *Server, underlineConn UnderlineConnection, id string) *connection {
c := newConnection(underlineConn, ConnectionConfig{
EvtMessagePrefix: s.config.EvtMessagePrefix,
WriteTimeout: s.config.WriteTimeout,
ReadTimeout: s.config.ReadTimeout,
PongTimeout: s.config.PongTimeout,
PingPeriod: s.config.PingPeriod,
MaxMessageSize: s.config.MaxMessageSize,
BinaryMessages: s.config.BinaryMessages,
ReadBufferSize: s.config.ReadBufferSize,
WriteBufferSize: s.config.WriteBufferSize,
EnableCompression: s.config.EnableCompression,
})
c.id = id
c.server = s
c.ctx = ctx
c.onRoomLeaveListeners = make([]LeaveRoomFunc, 0)
c.started = false
c.self = newEmitter(c, c.id) c.self = newEmitter(c, c.id)
c.broadcast = newEmitter(c, Broadcast) c.broadcast = newEmitter(c, Broadcast)
c.all = newEmitter(c, All) c.all = newEmitter(c, All)
@ -295,7 +339,7 @@ func (c *connection) Write(websocketMessageType int, data []byte) error {
// for any-case the app tries to write from different goroutines, // for any-case the app tries to write from different goroutines,
// we must protect them because they're reporting that as bug... // we must protect them because they're reporting that as bug...
c.writerMu.Lock() c.writerMu.Lock()
if writeTimeout := c.server.config.WriteTimeout; writeTimeout > 0 { if writeTimeout := c.config.WriteTimeout; writeTimeout > 0 {
// set the write deadline based on the configuration // set the write deadline based on the configuration
c.underline.SetWriteDeadline(time.Now().Add(writeTimeout)) c.underline.SetWriteDeadline(time.Now().Add(writeTimeout))
} }
@ -312,8 +356,8 @@ func (c *connection) Write(websocketMessageType int, data []byte) error {
// writeDefault is the same as write but the message type is the configured by c.messageType // writeDefault is the same as write but the message type is the configured by c.messageType
// if BinaryMessages is enabled then it's raw []byte as you expected to work with protobufs // if BinaryMessages is enabled then it's raw []byte as you expected to work with protobufs
func (c *connection) writeDefault(data []byte) { func (c *connection) writeDefault(data []byte) error {
c.Write(c.messageType, data) return c.Write(c.defaultMessageType, data)
} }
const ( const (
@ -342,8 +386,8 @@ func (c *connection) startPinger() {
go func() { go func() {
for { for {
// using sleep avoids the ticker error that causes a memory leak // using sleep avoids the ticker error that causes a memory leak
time.Sleep(c.server.config.PingPeriod) time.Sleep(c.config.PingPeriod)
if c.disconnected { if atomic.LoadUint32(&c.disconnected) > 0 {
// verifies if already disconected // verifies if already disconected
break break
} }
@ -375,12 +419,12 @@ func (c *connection) fireOnPong() {
func (c *connection) startReader() { func (c *connection) startReader() {
conn := c.underline conn := c.underline
hasReadTimeout := c.server.config.ReadTimeout > 0 hasReadTimeout := c.config.ReadTimeout > 0
conn.SetReadLimit(c.server.config.MaxMessageSize) conn.SetReadLimit(c.config.MaxMessageSize)
conn.SetPongHandler(func(s string) error { conn.SetPongHandler(func(s string) error {
if hasReadTimeout { if hasReadTimeout {
conn.SetReadDeadline(time.Now().Add(c.server.config.ReadTimeout)) conn.SetReadDeadline(time.Now().Add(c.config.ReadTimeout))
} }
//fire all OnPong methods //fire all OnPong methods
go c.fireOnPong() go c.fireOnPong()
@ -395,7 +439,7 @@ func (c *connection) startReader() {
for { for {
if hasReadTimeout { if hasReadTimeout {
// set the read deadline based on the configuration // set the read deadline based on the configuration
conn.SetReadDeadline(time.Now().Add(c.server.config.ReadTimeout)) conn.SetReadDeadline(time.Now().Add(c.config.ReadTimeout))
} }
_, data, err := conn.ReadMessage() _, data, err := conn.ReadMessage()
@ -415,15 +459,15 @@ func (c *connection) startReader() {
// messageReceived checks the incoming message and fire the nativeMessage listeners or the event listeners (ws custom message) // messageReceived checks the incoming message and fire the nativeMessage listeners or the event listeners (ws custom message)
func (c *connection) messageReceived(data []byte) { func (c *connection) messageReceived(data []byte) {
if bytes.HasPrefix(data, c.server.config.EvtMessagePrefix) { if bytes.HasPrefix(data, c.config.EvtMessagePrefix) {
//it's a custom ws message //it's a custom ws message
receivedEvt := c.server.messageSerializer.getWebsocketCustomEvent(data) receivedEvt := c.serializer.getWebsocketCustomEvent(data)
listeners, ok := c.onEventListeners[string(receivedEvt)] listeners, ok := c.onEventListeners[string(receivedEvt)]
if !ok || len(listeners) == 0 { if !ok || len(listeners) == 0 {
return // if not listeners for this event exit from here return // if not listeners for this event exit from here
} }
customMessage, err := c.server.messageSerializer.deserialize(receivedEvt, data) customMessage, err := c.serializer.deserialize(receivedEvt, data)
if customMessage == nil || err != nil { if customMessage == nil || err != nil {
return return
} }
@ -518,11 +562,23 @@ func (c *connection) To(to string) Emitter {
} }
func (c *connection) EmitMessage(nativeMessage []byte) error { func (c *connection) EmitMessage(nativeMessage []byte) error {
return c.self.EmitMessage(nativeMessage) if c.server != nil {
return c.self.EmitMessage(nativeMessage)
}
return c.writeDefault(nativeMessage)
} }
func (c *connection) Emit(event string, message interface{}) error { func (c *connection) Emit(event string, message interface{}) error {
return c.self.Emit(event, message) if c.server != nil {
return c.self.Emit(event, message)
}
b, err := c.serializer.serialize(event, message)
if err != nil {
return err
}
return c.EmitMessage(b)
} }
func (c *connection) OnMessage(cb NativeMessageFunc) { func (c *connection) OnMessage(cb NativeMessageFunc) {
@ -586,10 +642,24 @@ func (c *connection) Wait() {
var ErrAlreadyDisconnected = errors.New("already disconnected") var ErrAlreadyDisconnected = errors.New("already disconnected")
func (c *connection) Disconnect() error { func (c *connection) Disconnect() error {
if c == nil || c.disconnected { if c == nil || !atomic.CompareAndSwapUint32(&c.disconnected, 0, 1) {
return ErrAlreadyDisconnected return ErrAlreadyDisconnected
} }
return c.server.Disconnect(c.ID())
if c.server != nil {
return c.server.Disconnect(c.ID())
}
err := c.underline.WriteMessage(websocket.CloseMessage, websocket.FormatCloseMessage(websocket.CloseNormalClosure, ""))
if err != nil {
err = c.underline.Close()
}
if err == nil {
c.fireDisconnect()
}
return err
} }
// mem per-conn store // mem per-conn store
@ -632,3 +702,108 @@ func (c *connection) GetValueInt(key string) int {
} }
return 0 return 0
} }
// ConnectionConfig is the base configuration for both server and client connections.
// Clients must use `ConnectionConfig` in order to `Dial`, server's connection configuration is set by the `Config` structure.
type ConnectionConfig struct {
// EvtMessagePrefix is the prefix of the underline websocket events that are being established under the hoods.
// This prefix is visible only to the javascript side (code) and it has nothing to do
// with the message that the end-user receives.
// Do not change it unless it is absolutely necessary.
//
// If empty then defaults to []byte("iris-websocket-message:").
// Should match with the server's EvtMessagePrefix.
EvtMessagePrefix []byte
// WriteTimeout time allowed to write a message to the connection.
// 0 means no timeout.
// Default value is 0
WriteTimeout time.Duration
// ReadTimeout time allowed to read a message from the connection.
// 0 means no timeout.
// Default value is 0
ReadTimeout time.Duration
// PongTimeout allowed to read the next pong message from the connection.
// Default value is 60 * time.Second
PongTimeout time.Duration
// PingPeriod send ping messages to the connection within this period. Must be less than PongTimeout.
// Default value is 60 *time.Second
PingPeriod time.Duration
// MaxMessageSize max message size allowed from connection.
// Default value is 1024
MaxMessageSize int64
// BinaryMessages set it to true in order to denotes binary data messages instead of utf-8 text
// compatible if you wanna use the Connection's EmitMessage to send a custom binary data to the client, like a native server-client communication.
// Default value is false
BinaryMessages bool
// ReadBufferSize is the buffer size for the connection reader.
// Default value is 4096
ReadBufferSize int
// WriteBufferSize is the buffer size for the connection writer.
// Default value is 4096
WriteBufferSize int
// EnableCompression specify if the server should attempt to negotiate per
// message compression (RFC 7692). Setting this value to true does not
// guarantee that compression will be supported. Currently only "no context
// takeover" modes are supported.
//
// Defaults to false and it should be remain as it is, unless special requirements.
EnableCompression bool
}
// Validate validates the connection configuration.
func (c ConnectionConfig) Validate() ConnectionConfig {
if len(c.EvtMessagePrefix) == 0 {
c.EvtMessagePrefix = []byte(DefaultEvtMessageKey)
}
// 0 means no timeout.
if c.WriteTimeout < 0 {
c.WriteTimeout = DefaultWebsocketWriteTimeout
}
if c.ReadTimeout < 0 {
c.ReadTimeout = DefaultWebsocketReadTimeout
}
if c.PongTimeout < 0 {
c.PongTimeout = DefaultWebsocketPongTimeout
}
if c.PingPeriod <= 0 {
c.PingPeriod = DefaultWebsocketPingPeriod
}
if c.MaxMessageSize <= 0 {
c.MaxMessageSize = DefaultWebsocketMaxMessageSize
}
if c.ReadBufferSize <= 0 {
c.ReadBufferSize = DefaultWebsocketReadBufferSize
}
if c.WriteBufferSize <= 0 {
c.WriteBufferSize = DefaultWebsocketWriterBufferSize
}
return c
}
// Dial opens a new client connection to a WebSocket.
// The "url" input parameter is the url to connect to the server, it should be
// the ws:// (or wss:// if secure) + the host + the endpoint of the
// open socket of the server, i.e ws://localhost:8080/my_websocket_endpoint.
func Dial(url string, cfg ConnectionConfig) (ClientConnection, error) {
if !strings.HasPrefix(url, "ws://") {
url = "ws://" + url
}
conn, _, err := websocket.DefaultDialer.Dial(url, nil)
if err != nil {
return nil, err
}
clientConn := newConnection(conn, cfg)
go clientConn.Wait()
return clientConn, nil
}

5
websocket/server.go
View File

@ -3,6 +3,7 @@ package websocket
import ( import (
"bytes" "bytes"
"sync" "sync"
"sync/atomic"
"github.com/kataras/iris/context" "github.com/kataras/iris/context"
@ -149,7 +150,7 @@ func (s *Server) handleConnection(ctx context.Context, websocketConn UnderlineCo
// use the config's id generator (or the default) to create a websocket client/connection id // use the config's id generator (or the default) to create a websocket client/connection id
cid := s.config.IDGenerator(ctx) cid := s.config.IDGenerator(ctx)
// create the new connection // create the new connection
c := newConnection(ctx, s, websocketConn, cid) c := newServerConnection(ctx, s, websocketConn, cid)
// add the connection to the Server's list // add the connection to the Server's list
s.addConnection(c) s.addConnection(c)
@ -397,7 +398,7 @@ func (s *Server) Disconnect(connID string) (err error) {
// remove the connection from the list. // remove the connection from the list.
if conn, ok := s.getConnection(connID); ok { if conn, ok := s.getConnection(connID); ok {
conn.disconnected = true atomic.StoreUint32(&conn.disconnected, 1)
// fire the disconnect callbacks, if any. // fire the disconnect callbacks, if any.
conn.fireDisconnect() conn.fireDisconnect()
// close the underline connection and return its error, if any. // close the underline connection and return its error, if any.