fileData (10)

The fileData message contains an actual chunk of a file's binary content. It is sent by the file sender in direct response to a requestFileData message from the recipient.

Core Data Types

• IxiBytes: See IxiBytes Encoding.

Payload Structure

The payload is a custom binary structure containing the transfer ID, the chunk index, and the raw data for that chunk. The exact serialization is handled by the TransferManager class.

Field	Data Type	Min	Max	Description
transferData	IxiBytes	*	*	A serialized byte array containing the transfer UID, the packet number, and the raw file chunk data.

Behavioral Notes

• Response Message: This message is only ever sent in response to a requestFileData message.
• Recipient Action: Upon receiving a fileData message, the recipient's client extracts the packet number and the file chunk data. It then writes the data to the appropriate offset in the destination file being assembled on disk. The client keeps track of which chunks have been received.
• No Confirmation: The StreamMessage carrying fileData should have requireRcvConfirmation set to false. The reliability is managed at the application layer through the request/response flow of requestFileData and fileData.