org.apache.coyote.http11.filters

## Class ChunkedOutputFilter

- java.lang.Object
- - org.apache.coyote.http11.filters.ChunkedOutputFilter

- All Implemented Interfaces:
    HttpOutputBuffer, OutputFilter, OutputBuffer

      public class ChunkedOutputFilter
      extends Object
      implements OutputFilter

  Chunked output filter.
  Author:
    Remy Maucherat

- - ### Field Summary

    Fields
    Modifier and Type | Field and Description
    --- | ---
    `protected HttpOutputBuffer` | `buffer` Next buffer in the pipeline.
    `protected ByteBuffer` | `chunkHeader` Chunk header.
    `protected ByteBuffer` | `endChunk` End chunk.

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `ChunkedOutputFilter()` Default constructor.

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `int` | `doWrite(ByteBuffer chunk)` Write the given data to the response.
    `int` | `doWrite(ByteChunk chunk)` Deprecated. Unused. Will be removed in Tomcat 9. Use `doWrite(ByteBuffer)`
    `void` | `end()` Finish writing the current response.
    `void` | `flush()` Flushes any unwritten data to the client.
    `long` | `getBytesWritten()` Bytes written to the underlying socket.
    `void` | `recycle()` Make the filter ready to process the next request.
    `void` | `setBuffer(HttpOutputBuffer buffer)` Set the next buffer in the filter pipeline.
    `void` | `setResponse(Response response)` Some filters need additional parameters from the response.

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

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

- - ### Field Detail

    - #### buffer

          protected HttpOutputBuffer buffer

      Next buffer in the pipeline.

    - #### chunkHeader

          protected final ByteBuffer chunkHeader

      Chunk header.

    - #### endChunk

          protected final ByteBuffer endChunk

      End chunk.

  - ### Constructor Detail

    - #### ChunkedOutputFilter

          public ChunkedOutputFilter()

      Default constructor.

  - ### Method Detail

    - #### doWrite

          @Deprecated
          public int doWrite(ByteChunk chunk)
                      throws IOException

      Deprecated. Unused. Will be removed in Tomcat 9. Use `doWrite(ByteBuffer)`
      Description copied from interface: `OutputBuffer`
      Write the given data to the response. The caller owns the chunks.
      Specified by:
        `doWrite` in interface `OutputBuffer`
      Parameters:
        `chunk` - data to write
      Returns:
        The number of bytes written which may be less than available in the input chunk
      Throws:
        `IOException` - an underlying I/O error occurred

    - #### doWrite

          public int doWrite(ByteBuffer chunk)
                      throws IOException

      Description copied from interface: `OutputBuffer`
      Write the given data to the response. The caller owns the chunks.
      Specified by:
        `doWrite` in interface `OutputBuffer`
      Parameters:
        `chunk` - data to write
      Returns:
        The number of bytes written which may be less than available in the input chunk
      Throws:
        `IOException` - an underlying I/O error occurred

    - #### getBytesWritten

          public long getBytesWritten()

      Description copied from interface: `OutputBuffer`
      Bytes written to the underlying socket. This includes the effects of chunking, compression, etc.
      Specified by:
        `getBytesWritten` in interface `OutputBuffer`
      Returns:
        Bytes written for the current request

    - #### setResponse

          public void setResponse(Response response)

      Description copied from interface: `OutputFilter`
      Some filters need additional parameters from the response. All the necessary reading can occur in that method, as this method is called after the response header processing is complete.
      Specified by:
        `setResponse` in interface `OutputFilter`
      Parameters:
        `response` - The response to associate with this OutputFilter

    - #### setBuffer

          public void setBuffer(HttpOutputBuffer buffer)

      Description copied from interface: `OutputFilter`
      Set the next buffer in the filter pipeline.
      Specified by:
        `setBuffer` in interface `OutputFilter`
      Parameters:
        `buffer` - The next buffer instance

    - #### flush

          public void flush()
                     throws IOException

      Description copied from interface: `HttpOutputBuffer`
      Flushes any unwritten data to the client.
      Specified by:
        `flush` in interface `HttpOutputBuffer`
      Throws:
        `IOException` - If an I/O error occurs while flushing

    - #### end

          public void end()
                   throws IOException

      Description copied from interface: `HttpOutputBuffer`
      Finish writing the current response. It is acceptable to write extra bytes using `OutputBuffer.doWrite(java.nio.ByteBuffer)` during the execution of this method.
      Specified by:
        `end` in interface `HttpOutputBuffer`
      Throws:
        `IOException` - If an I/O error occurs while writing to the client

    - #### recycle

          public void recycle()

      Description copied from interface: `OutputFilter`
      Make the filter ready to process the next request.
      Specified by:
        `recycle` in interface `OutputFilter`

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