Google is transitioning third-party smart home account linking to be handled fully and independently within the Google Home app.
Updates to your integration may be needed before September 30, 2026. For more information, see the
Account linking migration guide .
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Properties
Optional bytesToRead bytesToRead: undefined | number
deviceId
deviceId: string
Optional hostnamehostname: undefined | string
requestId
requestId: string
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Last updated 2022-11-04 UTC.
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Request to send a local device command over TCP sockets. Commands are sent to the device using DeviceManager.send.
Example TCP command:
const payload = new Uint8Array([0x00, 0xFF, 0x00, 0xFF]); const command = new DataFlow.TcpRequestData(); command.requestId = request.requestId; command.deviceId = 'device-id'; command.port = 5555; command.operation = Constants.TcpOperation.WRITE; command.data = Buffer.from(payload).toString('hex');Handle the response
If the command succeeds, DeviceManager.send returns a TcpResponseData result. For TcpOperation.READ commands, the result contains a TcpResponse.
const command = new DataFlow.TcpRequestData(); command.operation = Constants.TcpOperation.READ; ... localHomeApp.getDeviceManager() .send(command) .then((result: DataFlow.CommandSuccess) => { const tcpResult = result as DataFlow.TcpResponseData; const response = tcpResult.tcpResponse.data; }) .catch((err: IntentFlow.HandlerError) => { // Handle command error });