Gin: Can't get SockJS to work with Gin?

[kvnxiao]

Hi there,
I'm trying to get the SockJS library for golang to work with Gin so I can do some realtime communications between rooms or channels that the clients can create.

However, I'm currently trying to test SockJS with Gin using a simple echo page that sends info to server and server sends it back for it to spit out on screen. I always end up getting a 404 on GET /echo/info. From Chrome console: GET http://localhost:8000/echo/info?t=1486141708375 404 (Not Found)

This is the console output:

[GIN] 2017/02/03 - 12:15:47 | 200 |     365.523µs | ::1 |   GET     /
[GIN] 2017/02/03 - 12:15:47 | 404 |       1.526µs | ::1 |   GET     /echo/info

Basic code below:

func main() {
    router := gin.Default()
    handler := sockjs.NewHandler("/echo/", sockjs.DefaultOptions, echoHandler)

    router.LoadHTMLGlob("templates/*")
    router.GET("/", func(c *gin.Context) {
        c.HTML(http.StatusOK, "index.tmpl", gin.H{
            "title": "Main website",
    }))
    router.GET("/echo", gin.WrapH(handler))

    router.Run(":8000")
}

func echoHandler(session sockjs.Session) {
    log.Println("new sockjs session established")
    for {
        if msg, err := session.Recv(); err == nil {
            session.Send(msg)
            continue
        }
        break
    }
    log.Println("sockjs session closed")
}

and in my index template I have var sock = new SockJS('http://localhost:8000/echo') so the url address shouldn't be wrong.

Could anyone please help me with this issue?

[javierprovecho]

@alphahelix00 maybe you need to add router.GET("/echo/*path", gin.WrapH(handler)) so gin handle all requests of type GET with path starting by /echo/.

[tsirolnik]

@javierprovecho Is probably correct, you're trying to do two different things. Once accessing /echo and once accessing /echo/info (Which implies that both paths can be handled)

[ty666]

router := gin.Default()
// "/echo/" --> "/echo". remove last '/'
handler := sockjs.NewHandler("/echo", sockjs.DefaultOptions, echoHandler)
router.GET("/echo/*path", gin.WrapH(handler))
router.Run(":8000")

It works.

[cityiron]

It works, I use Any is more convenient.

r.Any(prefix+"/*path", gin.WrapH(k8spod.CreateAttachHandler(prefix)))