ios无法设置mtu，所以超过20字节报错，  wx.setBLEMTU({         deviceId: deviceId2,         mtu: 153,         success(res3) {           console.log("设置mtu成功", res3);          wx.getBLEMTU({             deviceId: deviceId2,             success: (res4) => {               console.log(                 "安卓获取设备的MTU值为",                 res4.mtu               );             },             fail: (error) => {               console.error(                 "安卓获取设备的MTU值失败",                 error               );             }           });         },         fail(error) {           console.log("设置mtu失败", error);          wx.getBLEMTU({             deviceId: deviceId2,             success: (res3) => {               console.log(                 "苹果获取设备的MTU值为",                 res3.mtu               );             },             fail: (error2) => {               console.error(                 "苹果获取设备的MTU值失败",                 error2               );             }           });         }       }); 此函数写在createBLEConnectiond成功之后

    在开发者工具上的模拟机能够正常执行UDPSocket.onListening功能，但在使用真机调试的时候，手机无法执行UDPSocket.onListening