# Class SendfileDataBase

java.lang.Object
org.apache.tomcat.util.net.SendfileDataBase

Direct Known Subclasses:
  `Nio2Endpoint.SendfileData`, `NioEndpoint.SendfileData`

public abstract class SendfileDataBase extends Object

- ## Field Summary

  Fields
  Modifier and Type
  Field
  Description
  `final String`
  `fileName`
  The full path to the file that contains the data to be written to the socket.
  `SendfileKeepAliveState`
  `keepAliveState`
  Is the current request being processed on a keep-alive connection?
  `long`
  `length`
  The number of bytes remaining to be written from the file (from the current `pos`.
  `long`
  `pos`
  The position of the next byte in the file to be written to the socket.

- ## Constructor Summary

  Constructors
  Constructor
  Description
  `SendfileDataBase(String filename, long pos, long length)`

- ## Method Summary

  ### Methods inherited from class java.lang.Object

  `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- ## Field Details

  - ### keepAliveState

    public SendfileKeepAliveState keepAliveState
    Is the current request being processed on a keep-alive connection? This determines if the socket is closed once the send file completes or if processing continues with the next request on the connection or waiting for that next request to arrive.

  - ### fileName

    public final String fileName
    The full path to the file that contains the data to be written to the socket.

  - ### pos

    public long pos
    The position of the next byte in the file to be written to the socket. This is initialised to the start point and then updated as the file is written.

  - ### length

    public long length
    The number of bytes remaining to be written from the file (from the current `pos`. This is initialised to the end point - the start point and then updated as the file is written.

- ## Constructor Details

  - ### SendfileDataBase

    public SendfileDataBase(String filename, long pos, long length)