72 lines
1.6 KiB
Go
72 lines
1.6 KiB
Go
package core
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import (
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"fmt"
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"github.com/gorilla/websocket"
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"html/template"
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"log"
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"net/http"
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)
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func echo(sub Subscriber) func(w http.ResponseWriter, r *http.Request) {
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var upgrader = websocket.Upgrader{} // use default options
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return func(w http.ResponseWriter, r *http.Request) {
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fmt.Println("upgrading to ws")
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c, err := upgrader.Upgrade(w, r, nil)
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if err != nil {
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log.Print("upgrade:", err)
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return
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}
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//defer c.Close()
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go func() {
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for {
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if _, _, err := c.NextReader(); err != nil {
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c.Close()
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break
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}
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}
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}()
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dispatcherId, channel := sub.Subscribe()
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defer sub.Unsubscribe(dispatcherId)
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for {
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log.Println("")
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//if err != nil {
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// log.Println("read:", err)
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// break
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//}
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cmsg := <-channel
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err = c.WriteMessage(websocket.TextMessage, []byte(cmsg))
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if err != nil {
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log.Println("write:", err)
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break
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}
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}
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}
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}
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func home(w http.ResponseWriter, r *http.Request) {
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//var homeTemplate = template.Must(template.NewDispatcher("").ParseFiles("index.html"))
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tpl, err := template.ParseFiles("static/index.html")
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if err != nil {
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log.Fatalln(err)
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}
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err = tpl.Execute(w, "ws://"+r.Host+"/echo")
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if err != nil {
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log.Fatalln(err)
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}
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}
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func HttpListenAndServe(sub Subscriber, httpPort string) {
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log.Println("register websocket handler")
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http.HandleFunc("/echo", echo(sub))
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log.Println("register index handler")
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http.HandleFunc("/", home)
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log.Println("register static file handler")
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http.Handle("/static/", http.FileServer(http.Dir(".")))
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log.Println("start server")
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log.Fatal(http.ListenAndServe(httpPort, nil))
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}
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