WritableBuffer

All Known Implementing Classes:

NettyWritableBuffer, ServletServerStream.ByteArrayWritableBuffer, ServletServerStream.ByteArrayWritableBuffer
```
public interface WritableBuffer
```
An interface for a byte buffer that can only be written to. WritableBuffers are a generic way to transfer bytes to the concrete network transports, like Netty and OkHttp.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`int`	`readableBytes()`	Returns the number of bytes one can read from the buffer.
`void`	`release()`	Releases the buffer, indicating to the `WritableBufferAllocator` that this buffer is no longer used and its resources can be reused.
`int`	`writableBytes()`	Returns the number of bytes one can write to the buffer.
`void`	`write(byte b)`	Appends a single byte to the buffer.
`void`	`write(byte[] src, int srcIndex, int length)`	Appends `length` bytes to the buffer from the source array starting at `srcIndex`.

- Method Detail
  - write
```
void write(byte[] src,
           int srcIndex,
           int length)
```
    Appends length bytes to the buffer from the source array starting at srcIndex.
    
    Throws:
    
    java.lang.IndexOutOfBoundsException - if the specified srcIndex is less than 0, if srcIndex + length is greater than src.length, or if length is greater than writableBytes()
  - write
```
void write(byte b)
```
    Appends a single byte to the buffer. This is slow so don't call it.
  - writableBytes
```
int writableBytes()
```
    Returns the number of bytes one can write to the buffer.
  - readableBytes
```
int readableBytes()
```
    Returns the number of bytes one can read from the buffer.
  - release
```
void release()
```
    Releases the buffer, indicating to the WritableBufferAllocator that this buffer is no longer used and its resources can be reused.