Websocket: upgrade:websocket: request origin not allowed by Upgrader.CheckOrigin

[fghjhuang]

i use the server echo to test,but get this error,can you help me? i am not so good at golang
`package main

import (
"flag"
"log"
"net/http"

"github.com/gorilla/websocket"

)

var addr = flag.String("addr", ":80", "http service address")

var upgrader = websocket.Upgrader{} // use default options

func echo(w http.ResponseWriter, r *http.Request) {
c, err := upgrader.Upgrade(w, r, nil)
if err != nil {
log.Print("upgrade:", err)
return
}
defer c.Close()
for {
mt, message, err := c.ReadMessage()
if err != nil {
log.Println("read:", err)
break
}
log.Printf("recv: %s", message)
err = c.WriteMessage(mt, message)
if err != nil {
log.Println("write:", err)
break
}
}
}

func main() {
flag.Parse()
log.SetFlags(0)
http.HandleFunc("/", echo)
log.Fatal(http.ListenAndServe(*addr, nil))
}`

[garyburd]

See https://godoc.org/github.com/gorilla/websocket#hdr-Origin_Considerations.

[fghjhuang]

add to check :CheckOrigin: func(r *http.Request) bool {
return true
},

[mask3000]

Insert “upgrader.CheckOrigin = func(r *http.Request) bool { return true }” before ”conn, err := upgrader.Upgrade(w, r, nil)”

[elithrar]

You should never blindly trust any Origin by return true.

Have the function range over a list of accepted origins.