# Class CoyoteInputStream

java.lang.Object
java.io.InputStream
jakarta.servlet.ServletInputStream
org.apache.catalina.connector.CoyoteInputStream

All Implemented Interfaces:
  `Closeable`, `AutoCloseable`

public class CoyoteInputStream extends ServletInputStream
This class handles reading bytes.

Author:
  Remy Maucherat

- ## Field Summary

  Fields
  Modifier and Type
  Field
  Description
  `protected InputBuffer`
  `ib`
  `protected static final StringManager`
  `sm`

- ## Constructor Summary

  Constructors
  Modifier
  Constructor
  Description
  `protected`
  `CoyoteInputStream(InputBuffer ib)`

- ## Method Summary

  Modifier and Type
  Method
  Description
  `int`
  `available()`
  `protected Object`
  `clone()`
  Prevent cloning the facade.
  `void`
  `close()`
  Close the stream Since we re-cycle, we can't allow the call to super.close() which would permanently disable us.
  `boolean`
  `isFinished()`
  Has the end of this InputStream been reached?
  `boolean`
  `isReady()`
  Can data be read from this InputStream without blocking?
  `int`
  `read()`
  `int`
  `read(byte[] b)`
  `int`
  `read(byte[] b, int off, int len)`
  `int`
  `read(ByteBuffer b)`
  Transfers bytes from the buffer to the specified ByteBuffer.
  `void`
  `setReadListener(ReadListener listener)`
  Sets the `ReadListener` for this `ServletInputStream` and thereby switches to non-blocking IO.

  ### Methods inherited from class jakarta.servlet.ServletInputStream

  `readLine`

  ### Methods inherited from class java.io.InputStream

  `mark, markSupported, nullInputStream, readAllBytes, readNBytes, readNBytes, reset, skip, skipNBytes, transferTo`

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

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

- ## Field Details

  - ### sm

    protected static final StringManager sm

  - ### ib

    protected InputBuffer ib

- ## Constructor Details

  - ### CoyoteInputStream

    protected CoyoteInputStream(InputBuffer ib)

- ## Method Details

  - ### clone

    protected Object clone() throws CloneNotSupportedException
    Prevent cloning the facade.
    Overrides:
      `clone` in class `Object`
    Throws:
      `CloneNotSupportedException`

  - ### read

    public int read() throws IOException
    Specified by:
      `read` in class `InputStream`
    Throws:
      `IOException`

  - ### available

    public int available() throws IOException
    Overrides:
      `available` in class `InputStream`
    Throws:
      `IOException`

  - ### read

    public int read(byte[] b) throws IOException
    Overrides:
      `read` in class `InputStream`
    Throws:
      `IOException`

  - ### read

    public int read(byte[] b, int off, int len) throws IOException
    Overrides:
      `read` in class `InputStream`
    Throws:
      `IOException`

  - ### read

    public int read(ByteBuffer b) throws IOException
    Transfers bytes from the buffer to the specified ByteBuffer. After the operation the position of the ByteBuffer will be returned to the one before the operation, the limit will be the position incremented by the number of the transferred bytes.
    Parameters:
      `b` - the ByteBuffer into which bytes are to be written.
    Returns:
      an integer specifying the actual number of bytes read, or -1 if the end of the stream is reached
    Throws:
      `IOException` - if an input or output exception has occurred

  - ### close

    public void close() throws IOException
    Close the stream Since we re-cycle, we can't allow the call to super.close() which would permanently disable us.
    Specified by:
      `close` in interface `AutoCloseable`
    Specified by:
      `close` in interface `Closeable`
    Overrides:
      `close` in class `InputStream`
    Throws:
      `IOException`

  - ### isFinished

    public boolean isFinished()
    Description copied from class: `jakarta.servlet.ServletInputStream`
    Has the end of this InputStream been reached?
    Specified by:
      `isFinished` in class `ServletInputStream`
    Returns:
      `true` if all the data has been read from the stream, else `false`

  - ### isReady

    public boolean isReady()
    Description copied from class: `jakarta.servlet.ServletInputStream`
    Can data be read from this InputStream without blocking? Returns If this method is called and returns false, the container will invoke `ReadListener.onDataAvailable()` when data is available.
    Specified by:
      `isReady` in class `ServletInputStream`
    Returns:
      `true` if data can be read without blocking, else `false`

  - ### setReadListener

    public void setReadListener(ReadListener listener)
    Description copied from class: `jakarta.servlet.ServletInputStream`
    Sets the `ReadListener` for this `ServletInputStream` and thereby switches to non-blocking IO. It is only valid to switch to non-blocking IO within async processing or HTTP upgrade processing.
    Specified by:
      `setReadListener` in class `ServletInputStream`
    Parameters:
      `listener` - The non-blocking IO read listener