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add chat example
This commit is contained in:
astaxie
parent
a88750d2b3
commit
31fbd52462
@ -1,42 +0,0 @@
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package main
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import (
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"fmt"
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"github.com/astaxie/beego"
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"github.com/fzzy/sockjs-go/sockjs"
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"strings"
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)
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var users *sockjs.SessionPool = sockjs.NewSessionPool()
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func chatHandler(s sockjs.Session) {
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users.Add(s)
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defer users.Remove(s)
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for {
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m := s.Receive()
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if m == nil {
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break
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}
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fullAddr := s.Info().RemoteAddr
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addr := fullAddr[:strings.LastIndex(fullAddr, ":")]
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m = []byte(fmt.Sprintf("%s: %s", addr, m))
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users.Broadcast(m)
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}
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}
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type MainController struct {
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beego.Controller
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}
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func (m *MainController) Get() {
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m.TplNames = "index.html"
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}
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func main() {
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conf := sockjs.NewConfig()
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sockjshandler := sockjs.NewHandler("/chat", chatHandler, conf)
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beego.Router("/", &MainController{})
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beego.RouterHandler("/chat/:info(.*)", sockjshandler)
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beego.Run()
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}
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3
example/chat/conf/app.conf
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3
example/chat/conf/app.conf
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@ -0,0 +1,3 @@
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appname = chat
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httpport = 8080
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runmode = dev
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14
example/chat/controllers/default.go
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14
example/chat/controllers/default.go
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@ -0,0 +1,14 @@
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package controllers
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import (
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"github.com/astaxie/beego"
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)
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type MainController struct {
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beego.Controller
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}
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func (this *MainController) Get() {
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this.Data["host"] = this.Ctx.Request.Host
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this.TplNames = "index.tpl"
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}
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169
example/chat/controllers/ws.go
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169
example/chat/controllers/ws.go
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@ -0,0 +1,169 @@
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package controllers
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import (
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"github.com/astaxie/beego"
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"github.com/garyburd/go-websocket/websocket"
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"io/ioutil"
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"math/rand"
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"net/http"
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"time"
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)
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const (
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// Time allowed to write a message to the client.
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writeWait = 10 * time.Second
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// Time allowed to read the next message from the client.
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readWait = 60 * time.Second
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// Send pings to client with this period. Must be less than readWait.
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pingPeriod = (readWait * 9) / 10
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// Maximum message size allowed from client.
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maxMessageSize = 512
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)
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func init() {
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rand.Seed(time.Now().UTC().UnixNano())
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go h.run()
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}
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// connection is an middleman between the websocket connection and the hub.
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type connection struct {
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username string
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// The websocket connection.
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ws *websocket.Conn
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// Buffered channel of outbound messages.
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send chan []byte
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}
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// readPump pumps messages from the websocket connection to the hub.
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func (c *connection) readPump() {
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defer func() {
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h.unregister <- c
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c.ws.Close()
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}()
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c.ws.SetReadLimit(maxMessageSize)
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c.ws.SetReadDeadline(time.Now().Add(readWait))
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for {
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op, r, err := c.ws.NextReader()
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if err != nil {
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break
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}
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switch op {
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case websocket.OpPong:
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c.ws.SetReadDeadline(time.Now().Add(readWait))
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case websocket.OpText:
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message, err := ioutil.ReadAll(r)
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if err != nil {
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break
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}
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h.broadcast <- []byte(c.username + "_" + time.Now().Format("15:04:05") + ":" + string(message))
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}
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}
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}
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// write writes a message with the given opCode and payload.
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func (c *connection) write(opCode int, payload []byte) error {
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c.ws.SetWriteDeadline(time.Now().Add(writeWait))
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return c.ws.WriteMessage(opCode, payload)
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}
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// writePump pumps messages from the hub to the websocket connection.
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func (c *connection) writePump() {
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ticker := time.NewTicker(pingPeriod)
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defer func() {
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ticker.Stop()
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c.ws.Close()
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}()
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for {
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select {
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case message, ok := <-c.send:
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if !ok {
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c.write(websocket.OpClose, []byte{})
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return
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}
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if err := c.write(websocket.OpText, message); err != nil {
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return
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}
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case <-ticker.C:
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if err := c.write(websocket.OpPing, []byte{}); err != nil {
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return
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}
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}
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}
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}
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type hub struct {
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// Registered connections.
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connections map[*connection]bool
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// Inbound messages from the connections.
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broadcast chan []byte
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// Register requests from the connections.
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register chan *connection
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// Unregister requests from connections.
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unregister chan *connection
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}
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var h = &hub{
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broadcast: make(chan []byte, maxMessageSize),
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register: make(chan *connection, 1),
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unregister: make(chan *connection, 1),
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connections: make(map[*connection]bool),
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}
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func (h *hub) run() {
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for {
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select {
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case c := <-h.register:
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h.connections[c] = true
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case c := <-h.unregister:
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delete(h.connections, c)
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close(c.send)
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case m := <-h.broadcast:
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for c := range h.connections {
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select {
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case c.send <- m:
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default:
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close(c.send)
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delete(h.connections, c)
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}
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}
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}
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}
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}
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type WSController struct {
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beego.Controller
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}
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func (this *WSController) Get() {
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ws, err := websocket.Upgrade(this.Ctx.ResponseWriter, this.Ctx.Request.Header, nil, 1024, 1024)
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if _, ok := err.(websocket.HandshakeError); ok {
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http.Error(this.Ctx.ResponseWriter, "Not a websocket handshake", 400)
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return
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} else if err != nil {
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return
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}
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c := &connection{send: make(chan []byte, 256), ws: ws, username: randomString(10)}
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h.register <- c
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go c.writePump()
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c.readPump()
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}
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func randomString(l int) string {
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bytes := make([]byte, l)
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for i := 0; i < l; i++ {
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bytes[i] = byte(randInt(65, 90))
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}
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return string(bytes)
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}
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func randInt(min int, max int) int {
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return min + rand.Intn(max-min)
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}
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12
example/chat/main.go
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12
example/chat/main.go
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@ -0,0 +1,12 @@
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package main
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import (
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"github.com/astaxie/beego"
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"github.com/astaxie/beego/example/chat/controllers"
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)
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func main() {
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beego.Router("/", &controllers.MainController{})
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beego.Router("/ws", &controllers.WSController{})
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beego.Run()
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}
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@ -1,81 +0,0 @@
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<!DOCTYPE html>
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<html>
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<head>
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<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>
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<script src="http://cdn.sockjs.org/sockjs-0.3.4.min.js"></script>
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<script>
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$(function() {
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var conn = null;
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function log(msg) {
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var control = $('#log');
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control.html(control.html() + msg + '<br/>');
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control.scrollTop(control.scrollTop() + 1000);
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}
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function disconnect() {
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if (conn != null) {
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log('Disconnecting...');
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conn.close();
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conn = null;
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updateUi();
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}
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}
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function updateUi() {
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if (conn == null || conn.readyState != SockJS.OPEN) {
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$('#status').text('disconnected');
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$('#connect').text('Connect');
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} else {
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$('#status').text('connected (' + conn.protocol + ')');
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$('#connect').text('Disconnect');
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}
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}
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$('form').submit(function() {
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var text = $('#message').val();
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conn.send(text);
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$('#message').val('').focus();
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return false;
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});
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conn = new SockJS('http://' + window.location.host + '/chat');
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log('Connecting...');
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conn.onopen = function() {
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log('Connected.');
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updateUi();
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};
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conn.onmessage = function(e) {
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log(e.data);
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};
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conn.onclose = function() {
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log('Disconnected.');
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conn = null;
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updateUi();
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};
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$('#message').val('').focus();
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});
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</script>
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<title>Sockjs-go chat</title>
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</head>
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<body>
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<h1>Sockjs-go chat</h1>
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<div>
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Status: <span id="status">disconnected</span>
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</div>
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<div id="log" style="width: 60em; height: 20em; overflow:auto; border: 1px solid black">
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</div>
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<form id="chatform">
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<label for="message">Message:</label>
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<input id="message" type="text" />
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<input type="submit" value="Send" />
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</form>
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</body>
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</html>
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92
example/chat/views/index.tpl
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92
example/chat/views/index.tpl
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<title>Chat Example</title>
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<script src="//ajax.googleapis.com/ajax/libs/jquery/2.0.3/jquery.min.js"></script>
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<script type="text/javascript">
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$(function() {
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var conn;
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var msg = $("#msg");
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var log = $("#log");
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function appendLog(msg) {
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var d = log[0]
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var doScroll = d.scrollTop == d.scrollHeight - d.clientHeight;
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msg.appendTo(log)
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if (doScroll) {
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d.scrollTop = d.scrollHeight - d.clientHeight;
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}
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}
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$("#form").submit(function() {
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if (!conn) {
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return false;
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}
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if (!msg.val()) {
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return false;
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}
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conn.send(msg.val());
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msg.val("");
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return false
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});
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if (window["WebSocket"]) {
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conn = new WebSocket("ws://{{.host}}/ws");
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conn.onclose = function(evt) {
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appendLog($("<div><b>Connection closed.</b></div>"))
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}
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conn.onmessage = function(evt) {
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appendLog($("<div/>").text(evt.data))
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}
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} else {
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appendLog($("<div><b>Your browser does not support WebSockets.</b></div>"))
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}
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});
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</script>
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<style type="text/css">
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html {
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overflow: hidden;
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}
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body {
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overflow: hidden;
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padding: 0;
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margin: 0;
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width: 100%;
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height: 100%;
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background: gray;
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}
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#log {
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background: white;
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margin: 0;
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padding: 0.5em 0.5em 0.5em 0.5em;
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position: absolute;
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top: 0.5em;
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left: 0.5em;
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right: 0.5em;
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bottom: 3em;
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overflow: auto;
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}
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#form {
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padding: 0 0.5em 0 0.5em;
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margin: 0;
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position: absolute;
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bottom: 1em;
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left: 0px;
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width: 100%;
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overflow: hidden;
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}
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</style>
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</head>
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<body>
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<div id="log"></div>
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<form id="form">
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<input type="submit" value="Send" />
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<input type="text" id="msg" size="64"/>
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</form>
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</body>
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</html>
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