func GetNetworkId(ctx *fasthttp.RequestCtx) (int, error) {
    host := string(ctx.Host())
    idx := strings.Index(host, ".")
    if idx == -1 {
        return 0, errors.New("prefix not found")
    }
    val, err := strconv.Atoi(string(host[0:idx]))
    return val, err
}

func GetNetworkId(ctx *fasthttp.RequestCtx) (int, error) {
    host := string(ctx.Host())
    idx := strings.Index(host, ".")
    if idx == -1 {
        return 0, errors.New("prefix not found")
    }
    val, err := strconv.Atoi(string(host[0:idx]))
    return val, err
}

func GetNetworkId(ctx *fasthttp.RequestCtx) (int, error) {
    host := ctx.Host()
    idx := bytes.Index(host, []byte("."))
    if idx == -1 {
        return 0, errors.New("prefix not found")
    }
    val, err := strconv.Atoi(string(host[0:idx]))
    return val, err
}

func GetNetworkId(ctx *fasthttp.RequestCtx) (int, error) {
    host := ctx.Host()
    idx := bytes.Index(host, []byte("."))
    if idx == -1 {
        return 0, errors.New("prefix not found")
    }
    val, err := strconv.Atoi(string(host[0:idx]))
    return val, err
}