Golang WebSocket数据不正确

Question

I'm using x.net.websocket to read data from a websocket. The data is relatively large. When I read it, I can't read it completely, so it is cut off. Is there any way to solve it?

func receiveWebsocket(ws *websocket.Conn) error {
    for {
        var msg = make([]byte, 1024*1024) // 1024kb
        m, err := ws.Read(msg) 
        if err != nil {
            log15.Error("ws read error", "error", err)
            return err
        }
        fmt.Println("length ---",m,  string(msg))
        response := string(msg[:m])
        assignmentWebsocket(response)
    }
}

According to the log, the m value is always 4092, even if msg is very large.

Answer 1

First call always reads less than 4KB, and for security reasons the length is limited, if you want to increase, set:

ws.MaxPayloadBytes = xxxx

From the second call your msg will be filled.

If you want to read the whole message in a single call,do:

msg, err := ioutil.ReadAll(ws)