Gin using socket.io in gin

I tried to use socket.io in gin,but I met a problem,I use it this way ` router.GET ( "/socket.io/",socketHandler)

router.POST ( "/socket.io/",socketHandler)

router.Handle ( "WS", "/socket.io/", socketHandler )

router.Handle ( "WSS", "/socket.io/",socketHandler )`

and socketHandler ` sio.On("/", func() {

    log.Println("connect-----------")

})

sio.Of("/android").On("connect", func(ns *socketio.NameSpace) {

    KeyMap[ns.Id()]=ns

    log.Println("Pol Connected: ", ns.Id())

})

sio.Of("/android").On("disconnect", func(ns *socketio.NameSpace) {

    delete(KeyMap, ns.Id())

    log.Println("Pol Disconnected: ", ns.Id())

})

   sio.ServeHTTP(c.Writer,c.Request)`

After page access, there is a socketHandler method,but No output,Then the console prints 404. The console has a lot of output `[GIN] 2018/07/16 - 00:16:38 | 404 | 0s | ::1 | GET /socket.io/?EIO=3&transport=polling&t=MIUkiRZ

`

Comment From: appleboy

See my example:

https://github.com/go-ggz/ggz/blob/master/router/router.go#L120-L124

Comment From: doquangtan

Use can use this lib socket.io golang. It is socketio server version 4.x and it can using with client version 3.x, 4.x

import (
    "github.com/gin-gonic/gin"
    socketio "github.com/doquangtan/socket.io/v4"
)

func main() {
    io := socketio.New()

    io.OnConnection(func(socket *socketio.Socket) {
        // ...
    })

    router := gin.Default()
    router.GET("/socket.io/", gin.WrapH(io.HttpHandler()))
    router.Run(":3300")
}