【求助】OpenHarmony 4.0 release 中 UDP 广播问题

在 OpenHarmony 4.0 release 中，使用 UDP 发送 255.255.255.255 的全局广播时，出现{"code":2301013,"message":"Permission denied"}部分报错如下： 02-01 21:47:25.678 31083 31249 E C015b

weixin_39386123

450人浏览 · 2024-02-01 21:51:56

weixin_39386123 · 2024-02-01 21:51:56 发布

在 OpenHarmony 4.0 release 中，使用 UDP 发送 255.255.255.255 的全局广播时，出现{"code":2301013,"message":"Permission denied"} 部分报错如下：

02-01 21:47:25.678 31083 31249 E C015b0/NetMgrSubsystem: NETSTACK [socket_exec.cpp 599] send failed, socket is 51, errno is 13
02-01 21:47:25.678 532 593 D C02500/DISP: [CallLayerFunction:51] device Id : 0
02-01 21:47:25.678 31083 31249 E C015b0/NetMgrSubsystem: NETSTACK [socket_exec.cpp 680] send failed, socket is 51, errno is 13
02-01 21:47:25.678 532 593 D C02500/DISP: [GetHdiLayer:213] id : 1
02-01 21:47:25.678 532 593 D C02500/DISP: [SetLayerCompositionType:228] CompositionType type 1
02-01 21:47:25.678 532 593 D C02500/DISP_CMD: ProcessRequestCmd: PackSection, cmd-[78] = REQUEST_CMD_SET_LAYER_BLEND_TYPE
02-01 21:47:25.678 532 593 D C02500/DISP: [CallLayerFunction:51] device Id : 0
02-01 21:47:25.678 532 593 D C02500/DISP: [GetHdiLayer:213] id : 1
02-01 21:47:25.678 532 593 D C02500/DISP: [SetLayerBlendType:235] BlendType type 3
02-01 21:47:25.678 532 593 D C02500/DISP_CMD: ProcessRequestCmd: PackSection, cmd-[70] = REQUEST_CMD_SET_LAYER_CROP
02-01 21:47:25.678 532 593 D C02500/DISP: [CallLayerFunction:51] device Id : 0
02-01 21:47:25.678 532 593 D C02500/DISP: [GetHdiLayer:213] id : 1
02-01 21:47:25.678 532 593 D C02500/DISP: [SetLayerCrop:114] id : 1 crop x: 0 y : 0 w : 1920 h : 1080
02-01 21:47:25.678 532 593 D C02500/DISP_CMD: ProcessRequestCmd: PackSection, cmd-[71] = REQUEST_CMD_SET_LAYER_ZORDER
02-01 21:47:25.678 532 593 D C02500/DISP: [CallDisplayFunction:39] device Id : 0
02-01 21:47:25.678 532 593 D C02500/DISP: [SetLayerZorder:67] layerId : 1
02-01 21:47:25.678 532 593 D C02500/DISP: [SetLayerZorder:73] zorder no change layerId 1, zorder 0
02-01 21:47:25.678 532 593 D C02500/DISP_CMD: ProcessRequestCmd: PackSection, cmd-[72] = REQUEST_CMD_SET_LAYER_PREMULTI
02-01 21:47:25.678 532 593 D C02500/DISP: [CallLayerFunction:51] device Id : 0
02-01 21:47:25.679 532 593 D C02500/DISP: [GetHdiLayer:213] id : 1
02-01 21:47:25.679 532 593 D C02500/DISP: [SetLayerPreMulti:127]
02-01 21:47:25.679 532 593 D C02500/DISP_CMD: ProcessRequestCmd: PackSection, cmd-[80] = unknow command id.
02-01 21:47:25.679 532 593 E C02500/DISP: [0;32;31m[SetLayerMaskInfo:318] <private> is not supported[m
02-01 21:47:25.679 532 593 E C02500/DISP_CMD: 823@OnSetLayerMaskInfo: check failed
02-01 21:47:25.679 532 593 D C02500/DISP_CMD: ProcessRequestCmd: PackSection, cmd-[64] = REQUEST_CMD_PREPARE_DISPLAY_LAYERS
02-01 21:47:25.679 532 593 D C02500/DISP: [CallDisplayFunction:39] device Id : 0
02-01 21:47:25.679 532 593 D C02500/DISP: [PrepareDisplayLayers:169]
02-01 21:47:25.679 532 593 D C02500/DISP: [PrepareDisplayLayers:176] mLayers size 5 layers size 5
02-01 21:47:25.679 532 593 D C02500/DISP: [SetLayerZorder:121] id : 0 zorder : 3
02-01 21:47:25.679 532 593 D C02500/DISP: [SetLayers:108] layers size 5
02-01 21:47:25.679 532 593 D C02500/DISP: [CanHandle:85]
02-01 21:47:25.679 532 593 D C02500/DISP: [CanHandle:85]
02-01 21:47:25.679 532 593 D C02500/DISP: [CanHandle:85]
02-01 21:47:25.679 532 593 D C02500/DISP: [CanHandle:85]
02-01 21:47:25.679 532 593 D C02500/DISP: [CanHandle:85]
02-01 21:47:25.679 532 593 D C02500/DISP: [CanHandle:85]
02-01 21:47:25.679 532 593 D C02500/DISP: [SetDeviceSelect:117] 0
02-01 21:47:25.679 532 593 D C02500/DISP: [CanHandle:85]
02-01 21:47:25.679 532 593 D C02500/DISP: [SetDeviceSelect:117] 0
02-01 21:47:25.679 532 593 D C02500/DISP: [CanHandle:85]
02-01 21:47:25.679 532 593 D C02500/DISP: [SetDeviceSelect:117] 0
02-01 21:47:25.679 532 593 D C02500/DISP: [CanHandle:85]
02-01 21:47:25.679 532 593 D C02500/DISP: [SetDeviceSelect:117] 0
02-01 21:47:25.679 532 593 D C02500/DISP: [CanHandle:85]
02-01 21:47:25.679 532 593 D C02500/DISP: [SetDeviceSelect:117] 0
02-01 21:47:25.679 532 593 D C02500/DISP: [SetLayers:126] composer layers size 5
02-01 21:47:25.679 532 593 D C02500/DISP: [SetLayers:50]
02-01 21:47:25.679 532 593 D C02500/DISP: [PrepareDisplayLayers:187] layer change
02-01 21:47:25.679 532 593 D C02500/DISP: [SetLayerCompositionType:228] CompositionType type 0
02-01 21:47:25.679 532 593 D C02500/DISP: [PrepareDisplayLayers:187] layer change
02-01 21:47:25.679 532 593 D C02500/DISP: [SetLayerCompositionType:228] CompositionType type 0
02-01 21:47:25.679 532 593 D C02500/DISP: [PrepareDisplayLayers:187] layer change
02-01 21:47:25.679 532 593 D C02500/DISP: [SetLayerCompositionType:228] CompositionType type 0
02-01 21:47:25.679 532 593 D C02500/DISP: [PrepareDisplayLayers:187] layer change
02-01 21:47:25.679 532 593 D C02500/DISP: [SetLayerCompositionType:228] CompositionType type 0
02-01 21:47:25.679 532 593 D C02500/DISP: [PrepareDisplayLayers:187] layer change
02-01 21:47:25.679 532 593 D C02500/DISP: [SetLayerCompositionType:228] CompositionType type 0
02-01 21:47:25.679 532 593 D C02500/DISP: [CallDisplayFunction:39] device Id : 0
02-01 21:47:25.679 532 593 D C02500/DISP: [CallDisplayFunction:39] device Id : 0
02-01 21:47:25.679 532 593 D C02500/DISP: [GetDisplayCompChange:132] set the layers and type
02-01 21:47:25.679 31083 31083 D C03f00/ArkCompiler: [ecmascript] Throw error: Unexpected Text in JSON
02-01 21:47:25.679 31083 31083 D C03f00/ArkCompiler: [ecmascript] at formatJSON (entry/src/main/ets/LogUtil.ts:26:27)
02-01 21:47:25.679 31083 31083 D C03f00/ArkCompiler: at error (entry/src/main/ets/LogUtil.ts:48:45)
02-01 21:47:25.679 31083 31083 D C03f00/ArkCompiler: at anonymous (entry/src/main/ets/UdpClient.ts:154:25)
02-01 21:47:25.679 603 603 D C01400/Composer: PrepareCompleteIfNeed: Need flush framebuffer, client composition layer num is 5
02-01 21:47:25.679 603 603 D C01400/OHOS::RS: RsDebug RSPhysicalScreenProcessor::Redraw flush frame buffer start
02-01 21:47:25.679 31083 31083 E A00001/DnakeLog-UdpClient: send fail,{"code":2301013,"message":"Permission denied"}

应用已设置为系统权限，selinux 为关闭状态。并申请了如下权限：

"requestPermissions": [
  {
    "name": "ohos.permission.INTERNET"
  },
  {
    "name": "ohos.permission.GET_NETWORK_INFO"
  },
  {
    "name": "ohos.permission.SET_NETWORK_INFO"
  },
],

发送广播代码如下：

let udp = socket.constructUDPSocketInstance()
udp.bind({
  address: '10.9.4.34'
}).then(async () => {
  try {
    await udp.setExtraOptions({
      receiveBufferSize: 1024,
      sendBufferSize: 1024,
      reuseAddress: true,
      socketTimeout: 6000,
      broadcast: true
    }).then(() => {
      LogUtil.info(TAG, 'setExtraOptions success');
      udp.send({
        data: data,
        address: {
          address: '255.255.255.255', port: 9712, family: 1
        }
      }).then(async () => {
        if (printLog) {
          LogUtil.info(TAG, 'send success')
        }
        await this.closeSendUdp(udp)
        udp = null
      }).catch(async err => {
        LogUtil.error(TAG, 'send fail,' + JSON.stringify(err))
        await this.closeSendUdp(udp)
        udp = null
      })
    }).catch((err) => {
      LogUtil.error(TAG, 'setExtraOptions fail,' + JSON.stringify(err));
    })
  } catch (err) {
    LogUtil.error(TAG, 'setExtraOptions fail,' + JSON.stringify(err));
  }


}).catch(async err => {
  LogUtil.error(TAG, 'send fail  ,' + JSON.stringify(err))
  await this.closeSendUdp(udp)
  udp = null
})

请问 OpenHarmony 是否支持 UDP 发送 255.255.255.255 的全局广播？