ServletOutputStreamImpl (Undertow 2.1.0.Final API)

java.lang.Object
- java.io.OutputStream
- - javax.servlet.ServletOutputStream
  - - io.undertow.servlet.spec.ServletOutputStreamImpl

All Implemented Interfaces:

BufferWritableOutputStream, Closeable, Flushable, AutoCloseable
```
public class ServletOutputStreamImpl
extends javax.servlet.ServletOutputStream
implements BufferWritableOutputStream
```
This stream essentially has two modes. When it is being used in standard blocking mode then it will buffer in the pooled buffer. If the stream is closed before the buffer is full it will set a content-length header if one has not been explicitly set.
If a content-length header was present when the stream was created then it will automatically close and flush itself once the appropriate amount of data has been written.
Once the listener has been set it goes into async mode, and writes become non blocking. Most methods have two different code paths, based on if the listener has been set or not
Once the write listener has been set operations must only be invoked on this stream from the write listener callback. Attempting to invoke from a different thread will result in an IllegalStateException.
Async listener tasks are queued in the AsyncContextImpl. At most one listener can be active at one time, which simplifies the thread safety requirements.

Author:

Stuart Douglas

Constructor Summary

Constructors
Constructor and Description
`ServletOutputStreamImpl(ServletRequestContext servletRequestContext)` Construct a new instance.
`ServletOutputStreamImpl(ServletRequestContext servletRequestContext, int bufferSize)` Construct a new instance.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`close()`
`void`	`closeAsync()` Closes the channel, and flushes any data out using async IO
`void`	`flush()`
`void`	`flushInternal()`
`boolean`	`isClosed()`
`boolean`	`isReady()`
`void`	`resetBuffer()`
`void`	`setBufferSize(int size)`
`void`	`setWriteListener(javax.servlet.WriteListener writeListener)`
`void`	`transferFrom(FileChannel source)`
`void`	`write(byte[] b)`
`void`	`write(byte[] b, int off, int len)`
`void`	`write(ByteBuffer byteBuffer)`
`void`	`write(ByteBuffer[] buffers)`
`void`	`write(int b)`

Methods inherited from class javax.servlet.ServletOutputStream
print, print, print, print, print, print, print, println, println, println, println, println, println, println, println

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - ServletOutputStreamImpl
```
public ServletOutputStreamImpl(ServletRequestContext servletRequestContext)
```
    Construct a new instance. No write timeout is configured.
  - ServletOutputStreamImpl
```
public ServletOutputStreamImpl(ServletRequestContext servletRequestContext,
                               int bufferSize)
```
    Construct a new instance. No write timeout is configured.
- Method Detail
  - write
```
public void write(int b)
           throws IOException
```
    Specified by:
    
    write in class OutputStream
    
    Throws:
    
    IOException
  - write
```
public void write(byte[] b)
           throws IOException
```
    Overrides:
    
    write in class OutputStream
    
    Throws:
    
    IOException
  - write
```
public void write(byte[] b,
                  int off,
                  int len)
           throws IOException
```
    Overrides:
    
    write in class OutputStream
    
    Throws:
    
    IOException
  - write
```
public void write(ByteBuffer[] buffers)
           throws IOException
```
    Specified by:
    
    write in interface BufferWritableOutputStream
    
    Throws:
    
    IOException
  - write
```
public void write(ByteBuffer byteBuffer)
           throws IOException
```
    Specified by:
    
    write in interface BufferWritableOutputStream
    
    Throws:
    
    IOException
  - flush
```
public void flush()
           throws IOException
```
    Specified by:
    
    flush in interface Flushable
    
    Overrides:
    
    flush in class OutputStream
    
    Throws:
    
    IOException
  - flushInternal
```
public void flushInternal()
                   throws IOException
```
    Throws:
    
    IOException
  - transferFrom
```
public void transferFrom(FileChannel source)
                  throws IOException
```
    Specified by:
    
    transferFrom in interface BufferWritableOutputStream
    
    Throws:
    
    IOException
  - close
```
public void close()
           throws IOException
```
    Specified by:
    
    close in interface Closeable
    
    Specified by:
    
    close in interface AutoCloseable
    
    Overrides:
    
    close in class OutputStream
    
    Throws:
    
    IOException
  - closeAsync
```
public void closeAsync()
                throws IOException
```
    Closes the channel, and flushes any data out using async IO
    This is used in two situations, if an output stream is not closed when a request is done, and when performing a close on a stream that is in async mode
    
    Throws:
    
    IOException
  - resetBuffer
```
public void resetBuffer()
```
  - setBufferSize
```
public void setBufferSize(int size)
```
  - isClosed
```
public boolean isClosed()
```
  - isReady
```
public boolean isReady()
```
    Specified by:
    
    isReady in class javax.servlet.ServletOutputStream
  - setWriteListener
```
public void setWriteListener(javax.servlet.WriteListener writeListener)
```
    Specified by:
    
    setWriteListener in class javax.servlet.ServletOutputStream

Class ServletOutputStreamImpl

Constructor Summary

Method Summary

Methods inherited from class javax.servlet.ServletOutputStream

Methods inherited from class java.lang.Object

Constructor Detail

ServletOutputStreamImpl

ServletOutputStreamImpl

Method Detail

write

write

write

write

write

flush

flushInternal

transferFrom

close

closeAsync

resetBuffer

setBufferSize

isClosed

isReady

setWriteListener