websocket第二次连接时 无响应

请问这是前端还是后端的问题呢？

//第一次连接正常  
uni.connectSocket({  
    url: 'ws://192.168.153.191:8082'  
})  
let uid = uni.getStorageSync('uid')  
uni.onSocketOpen((res) => {  
    console.log('open')  
    uni.sendSocketMessage({  
        data: JSON.stringify({  
            type:'login_m',  
            data: {  
                uid  
            }  
        })  
    })  
})  
//第二次连接无响应  
setTimeout(() => {  
    console.log('try')  
    uni.closeSocket({  
        complete(e) {  
            // console.log('c', e)  
        }  
    })  
    uni.connectSocket({  
        url: 'ws://192.168.153.191:8082'  
    })  
    uni.onSocketOpen((res) => {  
        console.log('open')  
        uni.sendSocketMessage({  
            data: JSON.stringify({  
                type:'login_m',  
                data: {  
                    uid  
                }  
            })  
        })  
    })  
}, 3000)