NioEndpoint (Apache Tomcat 8.5.38 API Documentation)

java.lang.Object
- org.apache.tomcat.util.net.AbstractEndpoint<S>
- - org.apache.tomcat.util.net.AbstractJsseEndpoint<NioChannel>
  - - org.apache.tomcat.util.net.NioEndpoint

```
public class NioEndpoint
extends AbstractJsseEndpoint<NioChannel>
```
NIO tailored thread pool, providing the following services:
- Socket acceptor thread
- Socket poller thread
- Worker threads pool
When switching to Java 5, there's an opportunity to use the virtual machine's thread pool.
Author:

Mladen Turk, Remy Maucherat

Nested Class Summary

Nested Classes
Modifier and Type	Class and Description
`protected class`	`NioEndpoint.Acceptor` The background thread that listens for incoming TCP/IP connections and hands them off to an appropriate processor.
`static class`	`NioEndpoint.NioSocketWrapper`
`class`	`NioEndpoint.Poller` Poller class.
`static class`	`NioEndpoint.PollerEvent` PollerEvent, cacheable object for poller events to avoid GC
`static class`	`NioEndpoint.SendfileData` SendfileData class.
`protected class`	`NioEndpoint.SocketProcessor` This class is the equivalent of the Worker, but will simply use in an external Executor thread pool.

Nested classes/interfaces inherited from class org.apache.tomcat.util.net.AbstractEndpoint
AbstractEndpoint.BindState, AbstractEndpoint.Handler<S>

Field Summary

Fields
Modifier and Type Field and Description

static int OP_REGISTER
- Fields inherited from class org.apache.tomcat.util.net.AbstractEndpoint
  acceptors, acceptorThreadCount, acceptorThreadPriority, attributes, internalExecutor, negotiableProtocols, paused, processorCache, running, sm, socketProperties, sslHostConfigs, threadPriority

Fields
Modifier and Type	Field and Description
`static int`	`OP_REGISTER`

Constructor Summary

Constructors
Constructor and Description

NioEndpoint()

Constructors
Constructor and Description
`NioEndpoint()`

Method Summary

Methods
Modifier and Type	Method and Description
`void`	`bind()` Initialize the endpoint.
`protected AbstractEndpoint.Acceptor`	`createAcceptor()` Hook to allow Endpoints to provide a specific Acceptor implementation.
`protected SocketProcessorBase<NioChannel>`	`createSocketProcessor(SocketWrapperBase<NioChannel> socketWrapper, SocketEvent event)`
`protected void`	`doCloseServerSocket()` Actually close the server socket but don't perform any other clean-up.
`boolean`	`getDeferAccept()` Is deferAccept supported?
`int`	`getKeepAliveCount()` Number of keep-alive sockets.
`protected Log`	`getLog()`
`NioEndpoint.Poller`	`getPoller0()` Return an available poller in true round robin fashion.
`int`	`getPollerThreadCount()`
`int`	`getPollerThreadPriority()`
`int`	`getReadBufSize()`
`NioSelectorPool`	`getSelectorPool()`
`long`	`getSelectorTimeout()`
`protected java.nio.channels.NetworkChannel`	`getServerSocket()`
`protected java.util.concurrent.CountDownLatch`	`getStopLatch()`
`boolean`	`getUseInheritedChannel()`
`int`	`getWriteBufSize()`
`void`	`setPollerThreadCount(int pollerThreadCount)`
`void`	`setPollerThreadPriority(int pollerThreadPriority)`
`boolean`	`setProperty(java.lang.String name, java.lang.String value)` Generic properties, introspected
`void`	`setSelectorPool(NioSelectorPool selectorPool)`
`void`	`setSelectorTimeout(long timeout)`
`protected boolean`	`setSocketOptions(java.nio.channels.SocketChannel socket)` Process the specified connection.
`void`	`setSocketProperties(SocketProperties socketProperties)`
`protected void`	`setStopLatch(java.util.concurrent.CountDownLatch stopLatch)`
`void`	`setUseInheritedChannel(boolean useInheritedChannel)`
`void`	`startInternal()` Start the NIO endpoint, creating acceptor, poller threads.
`void`	`stopInternal()` Stop the endpoint.
`void`	`unbind()` Deallocate NIO memory pools, and close server socket.

Methods inherited from class org.apache.tomcat.util.net.AbstractJsseEndpoint
createSSLContext, createSSLEngine, destroySsl, getLocalAddress, getSniParseLimit, getSslConfigType, getSslImplementation, getSslImplementationName, init, initialiseSsl, isAlpnSupported, releaseSSLContext, setSniParseLimit, setSslImplementationName

Methods inherited from class org.apache.tomcat.util.net.AbstractEndpoint
addNegotiatedProtocol, addSslHostConfig, addSslHostConfig, closeServerSocketGraceful, countDownConnection, countUpOrAwaitConnection, createExecutor, destroy, findSslHostConfigs, getAcceptCount, getAcceptorThreadCount, getAcceptorThreadPriority, getAddress, getAttribute, getBacklog, getBindOnInit, getConnectionCount, getConnectionLinger, getConnectionTimeout, getCurrentThreadCount, getCurrentThreadsBusy, getDaemon, getDefaultSSLHostConfigName, getDomain, getExecutor, getExecutorTerminationTimeoutMillis, getHandler, getKeepAliveTimeout, getLocalPort, getMaxConnections, getMaxHeaderCount, getMaxKeepAliveRequests, getMaxThreads, getMinSpareThreads, getName, getPort, getProperty, getSocketProperties, getSoLinger, getSoTimeout, getSSLHostConfig, getTcpNoDelay, getThreadPriority, getUseSendfile, handleExceptionWithDelay, hasNegotiableProtocols, initializeConnectionLatch, isPaused, isRunning, isSSLEnabled, pause, processSocket, releaseConnectionLatch, reloadSslHostConfig, reloadSslHostConfigs, removeSslHostConfig, resume, setAcceptCount, setAcceptorThreadCount, setAcceptorThreadPriority, setAddress, setAttribute, setBacklog, setBindOnInit, setConnectionLinger, setConnectionTimeout, setDaemon, setDefaultSSLHostConfigName, setDomain, setExecutor, setExecutorTerminationTimeoutMillis, setHandler, setKeepAliveTimeout, setMaxConnections, setMaxHeaderCount, setMaxKeepAliveRequests, setMaxThreads, setMinSpareThreads, setName, setPort, setSoLinger, setSoTimeout, setSSLEnabled, setTcpNoDelay, setThreadPriority, setUseSendfile, shutdownExecutor, start, startAcceptorThreads, stop, unlockAccept

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

- Field Detail
  - OP_REGISTER
```
public static final int OP_REGISTER
```
    See Also:
    Constant Field Values
- Constructor Detail
  - NioEndpoint
```
public NioEndpoint()
```
- Method Detail
  - setProperty
```
public boolean setProperty(java.lang.String name,
                  java.lang.String value)
```
    Generic properties, introspected
    
    Overrides:
    
    setProperty in class AbstractEndpoint<NioChannel>
  - setUseInheritedChannel
```
public void setUseInheritedChannel(boolean useInheritedChannel)
```
  - getUseInheritedChannel
```
public boolean getUseInheritedChannel()
```
  - setPollerThreadPriority
```
public void setPollerThreadPriority(int pollerThreadPriority)
```
  - getPollerThreadPriority
```
public int getPollerThreadPriority()
```
  - setPollerThreadCount
```
public void setPollerThreadCount(int pollerThreadCount)
```
  - getPollerThreadCount
```
public int getPollerThreadCount()
```
  - setSelectorTimeout
```
public void setSelectorTimeout(long timeout)
```
  - getSelectorTimeout
```
public long getSelectorTimeout()
```
  - getPoller0
```
public NioEndpoint.Poller getPoller0()
```
    Return an available poller in true round robin fashion.
    
    Returns:
    The next poller in sequence
  - setSelectorPool
```
public void setSelectorPool(NioSelectorPool selectorPool)
```
  - setSocketProperties
```
public void setSocketProperties(SocketProperties socketProperties)
```
  - getDeferAccept
```
public boolean getDeferAccept()
```
    Is deferAccept supported?
    
    Specified by:
    
    getDeferAccept in class AbstractEndpoint<NioChannel>
  - getKeepAliveCount
```
public int getKeepAliveCount()
```
    Number of keep-alive sockets.
    
    Returns:
    The number of sockets currently in the keep-alive state waiting for the next request to be received on the socket
  - bind
```
public void bind()
          throws java.lang.Exception
```
    Initialize the endpoint.
    
    Specified by:
    
    bind in class AbstractEndpoint<NioChannel>
    
    Throws:
    
    java.lang.Exception
  - startInternal
```
public void startInternal()
                   throws java.lang.Exception
```
    Start the NIO endpoint, creating acceptor, poller threads.
    
    Specified by:
    
    startInternal in class AbstractEndpoint<NioChannel>
    
    Throws:
    
    java.lang.Exception
  - stopInternal
```
public void stopInternal()
```
    Stop the endpoint. This will cause all processing threads to stop.
    
    Specified by:
    
    stopInternal in class AbstractEndpoint<NioChannel>
  - unbind
```
public void unbind()
            throws java.lang.Exception
```
    Deallocate NIO memory pools, and close server socket.
    
    Overrides:
    
    unbind in class AbstractJsseEndpoint<NioChannel>
    
    Throws:
    
    java.lang.Exception
  - doCloseServerSocket
```
protected void doCloseServerSocket()
                            throws java.io.IOException
```
    Description copied from class: AbstractEndpoint
    
    Actually close the server socket but don't perform any other clean-up.
    
    Specified by:
    
    doCloseServerSocket in class AbstractEndpoint<NioChannel>
    
    Throws:
    
    java.io.IOException - If an error occurs closing the socket
  - getWriteBufSize
```
public int getWriteBufSize()
```
  - getReadBufSize
```
public int getReadBufSize()
```
  - getSelectorPool
```
public NioSelectorPool getSelectorPool()
```
  - createAcceptor
```
protected AbstractEndpoint.Acceptor createAcceptor()
```
    Description copied from class: AbstractEndpoint
    
    Hook to allow Endpoints to provide a specific Acceptor implementation.
    
    Specified by:
    
    createAcceptor in class AbstractEndpoint<NioChannel>
    
    Returns:
    the acceptor
  - getStopLatch
```
protected java.util.concurrent.CountDownLatch getStopLatch()
```
  - setStopLatch
```
protected void setStopLatch(java.util.concurrent.CountDownLatch stopLatch)
```
  - setSocketOptions
```
protected boolean setSocketOptions(java.nio.channels.SocketChannel socket)
```
    Process the specified connection.
    
    Parameters:
    socket - The socket channel
    
    Returns:
    true if the socket was correctly configured and processing may continue, false if the socket needs to be close immediately
  - getLog
```
protected Log getLog()
```
    Specified by:
    
    getLog in class AbstractEndpoint<NioChannel>
  - getServerSocket
```
protected java.nio.channels.NetworkChannel getServerSocket()
```
    Specified by:
    
    getServerSocket in class AbstractJsseEndpoint<NioChannel>
  - createSocketProcessor
```
protected SocketProcessorBase<NioChannel> createSocketProcessor(SocketWrapperBase<NioChannel> socketWrapper,
                                                    SocketEvent event)
```
    Specified by:
    
    createSocketProcessor in class AbstractEndpoint<NioChannel>

Class NioEndpoint

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.tomcat.util.net.AbstractEndpoint

Field Summary

Fields inherited from class org.apache.tomcat.util.net.AbstractEndpoint

Constructor Summary

Method Summary

Methods inherited from class org.apache.tomcat.util.net.AbstractJsseEndpoint

Methods inherited from class org.apache.tomcat.util.net.AbstractEndpoint

Methods inherited from class java.lang.Object

Field Detail

OP_REGISTER

Constructor Detail

NioEndpoint

Method Detail

setProperty

setUseInheritedChannel

getUseInheritedChannel

setPollerThreadPriority

getPollerThreadPriority

setPollerThreadCount

getPollerThreadCount

setSelectorTimeout

getSelectorTimeout

getPoller0

setSelectorPool

setSocketProperties

getDeferAccept

getKeepAliveCount

bind

startInternal

stopInternal

unbind

doCloseServerSocket

getWriteBufSize

getReadBufSize

getSelectorPool

createAcceptor

getStopLatch

setStopLatch

setSocketOptions

getLog

getServerSocket

createSocketProcessor