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The USBInTransferResult interface of the WebUSB API provides the result from a call to the transferIn() and controlTransferIn() methods of the USBDevice interface. It represents the result from requesting a transfer of data from the USB device to the USB host.


Creates a new USBInTransferResult object with the provided status and data fields.


USBInTransferResult.dataRead only
Returns a DataView object containing the data received from the USB device, if any.
USBInTransferResult.statusRead only
Returns the status of the transfer request, one of:
  • "ok" - The transfer was successful.
  • "stall" - The device indicated an error by generating a stall condition on the endpoint. A stall on the control endpoint does not need to be cleared. A stall on a bulk or interrupt endpoint must be cleared by calling clearHalt() before transferIn() can be called again.
  • "babble" - The device responded with more data than was expected.


Specification Status Comment
The definition of 'USBInTransferResult' in that specification.
Draft Initial definition.

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