## org.apache.http.impl.nio.reactor
Class IOSessionImpl

    java.lang.Object
      org.apache.http.impl.nio.reactor.IOSessionImpl

All Implemented Interfaces:
  IOSession, SocketAccessor

    @ThreadSafe
    public class IOSessionImpl

extends Object
implements IOSession, SocketAccessor

Default implementation of `IOSession`.

Since:
  4.0

Field Summary

Fields inherited from interface org.apache.http.nio.reactor.IOSession
`ACTIVE, ATTACHMENT_KEY, CLOSED, CLOSING`

Constructor Summary
`IOSessionImpl(SelectionKey key, org.apache.http.impl.nio.reactor.InterestOpsCallback interestOpsCallback, SessionClosedCallback sessionClosedCallback)` Creates new instance of IOSessionImpl.
`IOSessionImpl(SelectionKey key, SessionClosedCallback sessionClosedCallback)` Creates new instance of IOSessionImpl.

Method Summary
`ByteChannel` `channel()` Returns the underlying I/O channel associated with this session.
`void` `clearEvent(int op)` Clears interest in a particular I/O event type by updating the event mask associated with the session.
`void` `close()` Terminates the session gracefully and closes the underlying I/O channel.
`Object` `getAttribute(String name)` Returns the value of the attribute with the given name.
`int` `getEventMask()` Returns mask of I/O evens this session declared interest in.
`long` `getLastAccessTime()`
`long` `getLastReadTime()`
`long` `getLastWriteTime()`
`SocketAddress` `getLocalAddress()` Returns local address.
`SocketAddress` `getRemoteAddress()` Returns address of the remote peer.
`Socket` `getSocket()` Return the underlying socket
`int` `getSocketTimeout()` Returns value of the socket timeout in milliseconds.
`long` `getStartedTime()`
`int` `getStatus()` Returns status of the session:
`boolean` `hasBufferedInput()` Determines if the input buffer associated with the session contains data.
`boolean` `hasBufferedOutput()` Determines if the output buffer associated with the session contains data.
`boolean` `isClosed()` Determines if the session has been terminated.
`Object` `removeAttribute(String name)` Removes attribute with the given name.
`void` `setAttribute(String name, Object obj)` This method can be used to associate a particular object with the session by the given attribute name.
`void` `setBufferStatus(SessionBufferStatus bufferStatus)` Quite often I/O sessions need to maintain internal I/O buffers in order to transform input / output data prior to returning it to the consumer or writing it to the underlying channel.
`void` `setEvent(int op)` Declares interest in a particular I/O event type by updating the event mask associated with the session.
`void` `setEventMask(int ops)` Declares interest in I/O event notifications by setting the event mask associated with the session
`void` `setSocketTimeout(int timeout)` Sets value of the socket timeout in milliseconds.
`void` `shutdown()` Terminates the session by shutting down the underlying I/O channel.
`String` `toString()`

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

Constructor Detail

### IOSessionImpl

    public IOSessionImpl(SelectionKey key,
                         org.apache.http.impl.nio.reactor.InterestOpsCallback interestOpsCallback,
                         SessionClosedCallback sessionClosedCallback)

  Creates new instance of IOSessionImpl.

  Parameters:
    `key` - the selection key.
    `interestOpsCallback` - interestOps callback.
    `sessionClosedCallback` - session closed callback.
  Since:
    4.1

### IOSessionImpl

    public IOSessionImpl(SelectionKey key,
                         SessionClosedCallback sessionClosedCallback)

  Creates new instance of IOSessionImpl.

  Parameters:
    `key` - the selection key.
    `sessionClosedCallback` - session closed callback.

Method Detail

### channel

    public ByteChannel channel()

  Description copied from interface: `IOSession`
  Returns the underlying I/O channel associated with this session.

  Specified by:
    `channel` in interface `IOSession`
  Returns:
    the I/O channel.

### getLocalAddress

    public SocketAddress getLocalAddress()

  Description copied from interface: `IOSession`
  Returns local address.

  Specified by:
    `getLocalAddress` in interface `IOSession`
  Returns:
    socket address.

### getRemoteAddress

    public SocketAddress getRemoteAddress()

  Description copied from interface: `IOSession`
  Returns address of the remote peer.

  Specified by:
    `getRemoteAddress` in interface `IOSession`
  Returns:
    socket address.

### getEventMask

    public int getEventMask()

  Description copied from interface: `IOSession`
  Returns mask of I/O evens this session declared interest in.

  Specified by:
    `getEventMask` in interface `IOSession`
  Returns:
    I/O event mask.

### setEventMask

    public void setEventMask(int ops)

  Description copied from interface: `IOSession`
  Declares interest in I/O event notifications by setting the event mask associated with the session

  Specified by:
    `setEventMask` in interface `IOSession`
  Parameters:
    `ops` - new I/O event mask.

### setEvent

    public void setEvent(int op)

  Description copied from interface: `IOSession`
  Declares interest in a particular I/O event type by updating the event mask associated with the session.

  Specified by:
    `setEvent` in interface `IOSession`
  Parameters:
    `op` - I/O event type.

### clearEvent

    public void clearEvent(int op)

  Description copied from interface: `IOSession`
  Clears interest in a particular I/O event type by updating the event mask associated with the session.

  Specified by:
    `clearEvent` in interface `IOSession`
  Parameters:
    `op` - I/O event type.

### getSocketTimeout

    public int getSocketTimeout()

  Description copied from interface: `IOSession`
  Returns value of the socket timeout in milliseconds. The value of `0` signifies the session cannot time out.

  Specified by:
    `getSocketTimeout` in interface `IOSession`
  Returns:
    socket timeout.

### setSocketTimeout

    public void setSocketTimeout(int timeout)

  Description copied from interface: `IOSession`
  Sets value of the socket timeout in milliseconds. The value of `0` signifies the session cannot time out.

  Specified by:
    `setSocketTimeout` in interface `IOSession`
  Parameters:
    `timeout` - socket timeout.

### close

    public void close()

  Description copied from interface: `IOSession`
  Terminates the session gracefully and closes the underlying I/O channel. This method ensures that session termination handshake, such as the one used by the SSL/TLS protocol, is correctly carried out.

  Specified by:
    `close` in interface `IOSession`

### getStatus

    public int getStatus()

  Description copied from interface: `IOSession`
  Returns status of the session:

  `IOSession.ACTIVE`: session is active.

  `IOSession.CLOSING`: session is being closed.

  `IOSession.CLOSED`: session has been terminated.

  Specified by:
    `getStatus` in interface `IOSession`
  Returns:
    session status.

### isClosed

    public boolean isClosed()

  Description copied from interface: `IOSession`
  Determines if the session has been terminated.

  Specified by:
    `isClosed` in interface `IOSession`
  Returns:
    `true` if the session has been terminated, `false` otherwise.

### shutdown

    public void shutdown()

  Description copied from interface: `IOSession`
  Terminates the session by shutting down the underlying I/O channel.

  Specified by:
    `shutdown` in interface `IOSession`

### hasBufferedInput

    public boolean hasBufferedInput()

  Description copied from interface: `IOSession`
  Determines if the input buffer associated with the session contains data.

  Specified by:
    `hasBufferedInput` in interface `IOSession`
  Returns:
    `true` if the session input buffer contains data, `false` otherwise.

### hasBufferedOutput

    public boolean hasBufferedOutput()

  Description copied from interface: `IOSession`
  Determines if the output buffer associated with the session contains data.

  Specified by:
    `hasBufferedOutput` in interface `IOSession`
  Returns:
    `true` if the session output buffer contains data, `false` otherwise.

### setBufferStatus

    public void setBufferStatus(SessionBufferStatus bufferStatus)

  Description copied from interface: `IOSession`
  Quite often I/O sessions need to maintain internal I/O buffers in order to transform input / output data prior to returning it to the consumer or writing it to the underlying channel. Memory management in HttpCore NIO is based on the fundamental principle that the data consumer can read only as much input data as it can process without having to allocate more memory. That means, quite often some input data may remain unread in one of the internal or external session buffers. The I/O reactor can query the status of these session buffers, and make sure the consumer gets notified correctly as more data gets stored in one of the session buffers, thus allowing the consumer to read the remaining data once it is able to process it

  I/O sessions can be made aware of the status of external session buffers using the `SessionBufferStatus` interface.

  Specified by:
    `setBufferStatus` in interface `IOSession`

### getAttribute

    public Object getAttribute(String name)

  Description copied from interface: `IOSession`
  Returns the value of the attribute with the given name. The value can be `null` if not set.

  The value of the session attachment object can be obtained using `IOSession.ATTACHMENT_KEY` name.

  Specified by:
    `getAttribute` in interface `IOSession`
  Parameters:
    `name` - name of the attribute.
  Returns:
    value of the attribute.
  See Also:
    `IOSession.setAttribute(String, Object)`

### removeAttribute

    public Object removeAttribute(String name)

  Description copied from interface: `IOSession`
  Removes attribute with the given name.

  Specified by:
    `removeAttribute` in interface `IOSession`
  Parameters:
    `name` - name of the attribute to be removed.
  Returns:
    value of the removed attribute.
  See Also:
    `IOSession.setAttribute(String, Object)`

### setAttribute

    public void setAttribute(String name,
                             Object obj)

  Description copied from interface: `IOSession`
  This method can be used to associate a particular object with the session by the given attribute name.

  I/O sessions are not bound to an execution thread, therefore one cannot use the context of the thread to store a session's state. All details about a particular session must be stored within the session itself.

  Specified by:
    `setAttribute` in interface `IOSession`
  Parameters:
    `name` - name of the attribute.
    `obj` - value of the attribute.

### getStartedTime

    public long getStartedTime()

### getLastReadTime

    public long getLastReadTime()

### getLastWriteTime

    public long getLastWriteTime()

### getLastAccessTime

    public long getLastAccessTime()

### toString

    public String toString()

  Overrides:
    `toString` in class `Object`

### getSocket

    public Socket getSocket()

  Description copied from interface: `SocketAccessor`
  Return the underlying socket

  Specified by:
    `getSocket` in interface `SocketAccessor`
  Returns:
    - the underlying Socket, may be `null`.

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