AprEndpoint (Apache Tomcat 6.0.51 API Documentation)
Keywords: org.apache.tomcat.util.net.AprEndpoint class

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## org.apache.tomcat.util.net
Class AprEndpoint

    java.lang.Object
      org.apache.tomcat.util.net.AbstractEndpoint
          org.apache.tomcat.util.net.AprEndpoint

    public class AprEndpoint

extends AbstractEndpoint

APR tailored thread pool, providing the following services:

- Socket acceptor thread
- Socket poller thread
- Sendfile 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
`protected class` | `AprEndpoint.Acceptor` Server socket acceptor thread.
`static interface` | `AprEndpoint.Handler` Bare bones interface used for socket processing.
`class` | `AprEndpoint.Poller` Poller class.
`class` | `AprEndpoint.Sendfile` Sendfile class.
`static class` | `AprEndpoint.SendfileData` SendfileData class.
`protected class` | `AprEndpoint.SocketEventProcessor` This class is the equivalent of the Worker, but will simply use in an external Executor thread pool.
`protected class` | `AprEndpoint.SocketProcessor` This class is the equivalent of the Worker, but will simply use in an external Executor thread pool.
`protected class` | `AprEndpoint.SocketWithOptionsProcessor` This class is the equivalent of the Worker, but will simply use in an external Executor thread pool.
`protected class` | `AprEndpoint.Worker` Server processor class.
`class` | `AprEndpoint.WorkerStack`

Field Summary
`protected int` | `acceptorThreadCount` Acceptor thread count.
`protected java.net.InetAddress` | `address` Address for the server socket.
`protected int` | `backlog` Allows the server developer to specify the backlog that should be used for server sockets.
`static java.lang.String` | `CERTIFICATE_KEY` The Request attribute key for the client certificate chain.
`static java.lang.String` | `CIPHER_SUITE_KEY` The Request attribute key for the cipher suite.
`protected int` | `cometPollerRoundRobin`
`protected AprEndpoint.Poller[]` | `cometPollers` The socket poller used for Comet support.
`protected int` | `curThreads` Current worker threads count.
`protected int` | `curThreadsBusy` Current worker threads busy count.
`protected boolean` | `daemon` The default is true - the created threads will be in daemon mode.
`protected boolean` | `deferAccept` Defer accept.
`protected java.util.concurrent.Executor` | `executor` External Executor based thread pool.
`protected AprEndpoint.Handler` | `handler` Handling of accepted sockets.
`protected boolean` | `initialized` Track the initialization state of the endpoint.
`protected int` | `keepAliveTimeout` Keep-Alive timeout.
`static java.lang.String` | `KEY_SIZE_KEY` The Request attribute key for the key size.
`protected static Log` | `log`
`protected int` | `maxThreads` Maximum amount of worker threads.
`protected java.lang.String` | `name` Name of the thread pool, which will be used for naming child threads.
`protected boolean` | `paused` Will be set to true whenever the endpoint is paused.
`protected int` | `pollerRoundRobin`
`protected AprEndpoint.Poller[]` | `pollers` The socket poller.
`protected int` | `pollerSize` Size of the socket poller.
`protected int` | `pollerThreadCount` Poller thread count.
`protected int` | `pollTime` Poll interval, in microseconds.
`protected int` | `port` Server socket port.
`protected long` | `rootPool` Root APR memory pool.
`protected boolean` | `running` Running state of the endpoint.
`protected int` | `sendfileRoundRobin`
`protected AprEndpoint.Sendfile[]` | `sendfiles` The static file sender.
`protected int` | `sendfileSize` Size of the sendfile (= concurrent files which can be served).
`protected int` | `sendfileThreadCount` Sendfile thread count.
`protected int` | `sequence` Sequence number used to generate thread names.
`protected long` | `serverSock` Server socket "pointer".
`protected long` | `serverSockPool` APR memory pool for the server socket.
`static java.lang.String` | `SESSION_ID_KEY` The Request attribute key for the session id.
`protected static StringManager` | `sm`
`protected int` | `soLinger` Socket linger.
`protected int` | `soTimeout` Socket timeout.
`protected java.lang.String` | `SSLCACertificateFile` SSL CA certificate file.
`protected java.lang.String` | `SSLCACertificatePath` SSL CA certificate path.
`protected java.lang.String` | `SSLCARevocationFile` SSL CA revocation file.
`protected java.lang.String` | `SSLCARevocationPath` SSL CA revocation path.
`protected java.lang.String` | `SSLCertificateChainFile` SSL certificate chain file.
`protected java.lang.String` | `SSLCertificateFile` SSL certificate file.
`protected java.lang.String` | `SSLCertificateKeyFile` SSL certificate key file.
`protected java.lang.String` | `SSLCipherSuite` SSL cipher suite.
`protected long` | `sslContext` SSL context.
`protected boolean` | `SSLDisableCompression` Disables compression of the SSL stream.
`protected boolean` | `SSLEnabled` SSL engine.
`protected boolean` | `SSLHonorCipherOrder`
`protected java.lang.String` | `SSLPassword` SSL password (if a cert is encrypted, and no password has been provided, a callback will ask for a password).
`protected java.lang.String` | `SSLProtocol` SSL protocols.
`protected java.lang.String` | `SSLVerifyClient` SSL verify client.
`protected int` | `SSLVerifyDepth` SSL verify depth.
`protected boolean` | `tcpNoDelay` Socket TCP no delay.
`protected int` | `threadPriority` Priority of the acceptor and poller threads.
`protected int` | `unlockTimeout` Unlock timeout.
`protected boolean` | `useComet` Allow comet request handling.
`protected boolean` | `useSendfile` Use endfile for sending static files.
`protected AprEndpoint.WorkerStack` | `workers` Available workers.

Constructor Summary
`AprEndpoint()`

Method Summary
`protected long` | `allocatePoller(int size, long pool, int timeout)` Allocate a new poller of the specified size.
`protected AprEndpoint.Worker` | `createWorkerThread()` Create (or allocate) and return an available processor for use in processing a specific HTTP request, if possible.
`void` | `destroy()` Deallocate APR memory pools, and close server socket.
`int` | `getAcceptorThreadCount()`
`java.net.InetAddress` | `getAddress()`
`int` | `getBacklog()`
`AprEndpoint.Poller` | `getCometPoller()`
`int` | `getCurrentThreadCount()` Return the amount of threads that are managed by the pool.
`int` | `getCurrentThreadsBusy()` Return the amount of threads that are in use
`boolean` | `getDaemon()`
`boolean` | `getDeferAccept()`
`java.util.concurrent.Executor` | `getExecutor()`
`AprEndpoint.Handler` | `getHandler()`
`int` | `getKeepAliveCount()` Number of keepalive sockets.
`int` | `getKeepAliveTimeout()`
`int` | `getLocalPort()` Port in use.
`int` | `getMaxSpareThreads()` Dummy maxSpareThreads property.
`int` | `getMaxThreads()`
`int` | `getMinSpareThreads()` Dummy minSpareThreads property.
`java.lang.String` | `getName()`
`AprEndpoint.Poller` | `getPoller()`
`int` | `getPollerSize()`
`int` | `getPollerThreadCount()`
`int` | `getPollTime()`
`int` | `getPort()`
`AprEndpoint.Sendfile` | `getSendfile()`
`int` | `getSendfileCount()` Number of sendfile sockets.
`int` | `getSendfileSize()`
`int` | `getSendfileThreadCount()`
`protected int` | `getSequence()` Get a sequence number used for thread naming.
`int` | `getSoLinger()`
`int` | `getSoTimeout()`
`java.lang.String` | `getSSLCACertificateFile()`
`java.lang.String` | `getSSLCACertificatePath()`
`java.lang.String` | `getSSLCARevocationFile()`
`java.lang.String` | `getSSLCARevocationPath()`
`java.lang.String` | `getSSLCertificateChainFile()`
`java.lang.String` | `getSSLCertificateFile()`
`java.lang.String` | `getSSLCertificateKeyFile()`
`java.lang.String` | `getSSLCipherSuite()`
`boolean` | `getSSLDisableCompression()`
`boolean` | `getSSLHonorCipherOrder()`
`java.lang.String` | `getSSLPassword()`
`java.lang.String` | `getSSLProtocol()`
`java.lang.String` | `getSSLVerifyClient()`
`int` | `getSSLVerifyDepth()`
`boolean` | `getTcpNoDelay()`
`int` | `getThreadPriority()`
`int` | `getUnlockTimeout()`
`boolean` | `getUseComet()`
`boolean` | `getUseSendfile()`
`protected AprEndpoint.Worker` | `getWorkerThread()` Return a new worker thread, and block while to worker is available.
`void` | `init()` Initialize the endpoint.
`boolean` | `isPaused()` Return the state of the endpoint.
`boolean` | `isRunning()` Return the state of the endpoint.
`boolean` | `isSSLEnabled()`
`protected AprEndpoint.Worker` | `newWorkerThread()` Create and return a new processor suitable for processing HTTP requests and returning the corresponding responses.
`void` | `pause()` Pause the endpoint, which will make it stop accepting new sockets.
`protected boolean` | `processSocket(long socket)` Process given socket.
`protected boolean` | `processSocket(long socket, SocketStatus status)` Process given socket for an event.
`protected boolean` | `processSocketWithOptions(long socket)` Process given socket.
`protected void` | `recycleWorkerThread(AprEndpoint.Worker workerThread)` Recycle the specified Processor so that it can be used again.
`void` | `resume()` Resume the endpoint, which will make it start accepting new sockets again.
`void` | `setAcceptorThreadCount(int acceptorThreadCount)`
`void` | `setAddress(java.net.InetAddress address)`
`void` | `setBacklog(int backlog)`
`void` | `setDaemon(boolean b)`
`void` | `setDeferAccept(boolean deferAccept)`
`void` | `setExecutor(java.util.concurrent.Executor executor)`
`void` | `setHandler(AprEndpoint.Handler handler)`
`void` | `setKeepAliveTimeout(int keepAliveTimeout)`
`void` | `setMaxThreads(int maxThreads)`
`void` | `setName(java.lang.String name)`
`void` | `setPollerSize(int pollerSize)`
`void` | `setPollerThreadCount(int pollerThreadCount)`
`void` | `setPollTime(int pollTime)`
`void` | `setPort(int port)`
`void` | `setSendfileSize(int sendfileSize)`
`void` | `setSendfileThreadCount(int sendfileThreadCount)`
`protected boolean` | `setSocketOptions(long socket)` Process the specified connection.
`void` | `setSoLinger(int soLinger)`
`void` | `setSoTimeout(int soTimeout)`
`void` | `setSSLCACertificateFile(java.lang.String SSLCACertificateFile)`
`void` | `setSSLCACertificatePath(java.lang.String SSLCACertificatePath)`
`void` | `setSSLCARevocationFile(java.lang.String SSLCARevocationFile)`
`void` | `setSSLCARevocationPath(java.lang.String SSLCARevocationPath)`
`void` | `setSSLCertificateChainFile(java.lang.String SSLCertificateChainFile)`
`void` | `setSSLCertificateFile(java.lang.String SSLCertificateFile)`
`void` | `setSSLCertificateKeyFile(java.lang.String SSLCertificateKeyFile)`
`void` | `setSSLCipherSuite(java.lang.String SSLCipherSuite)`
`void` | `setSSLDisableCompression(boolean SSLDisableCompression)` Set to `true` to disable SSL compression.
`void` | `setSSLEnabled(boolean SSLEnabled)`
`void` | `setSSLHonorCipherOrder(boolean SSLHonorCipherOrder)` Set to `true` to enforce the server's cipher order instead of the default which is to allow the client to choose a preferred cipher.
`void` | `setSSLPassword(java.lang.String SSLPassword)`
`void` | `setSSLProtocol(java.lang.String SSLProtocol)`
`void` | `setSSLVerifyClient(java.lang.String SSLVerifyClient)`
`void` | `setSSLVerifyDepth(int SSLVerifyDepth)`
`void` | `setTcpNoDelay(boolean tcpNoDelay)`
`void` | `setThreadPriority(int threadPriority)`
`void` | `setUnlockTimeout(int unlockTimeout)`
`void` | `setUseComet(boolean useComet)`
`void` | `setUseSendfile(boolean useSendfile)`
`void` | `start()` Start the APR endpoint, creating acceptor, poller and sendfile threads.
`void` | `stop()` Stop the endpoint.
`protected void` | `unlockAccept()` Unlock the server socket accept using a bugus connection.

Methods inherited from class org.apache.tomcat.util.net.AbstractEndpoint
`getMaxHeaderCount, setMaxHeaderCount`

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

Field Detail

### log

    protected static Log log

### sm

    protected static StringManager sm

### CIPHER_SUITE_KEY

    public static final java.lang.String CIPHER_SUITE_KEY

  The Request attribute key for the cipher suite.

  See Also:
    Constant Field Values

### KEY_SIZE_KEY

    public static final java.lang.String KEY_SIZE_KEY

  The Request attribute key for the key size.

  See Also:
    Constant Field Values

### CERTIFICATE_KEY

    public static final java.lang.String CERTIFICATE_KEY

  The Request attribute key for the client certificate chain.

  See Also:
    Constant Field Values

### SESSION_ID_KEY

    public static final java.lang.String SESSION_ID_KEY

  The Request attribute key for the session id. This one is a Tomcat extension to the Servlet spec.

  See Also:
    Constant Field Values

### workers

    protected AprEndpoint.WorkerStack workers

  Available workers.

### running

    protected volatile boolean running

  Running state of the endpoint.

### paused

    protected volatile boolean paused

  Will be set to true whenever the endpoint is paused.

### initialized

    protected boolean initialized

  Track the initialization state of the endpoint.

### curThreadsBusy

    protected int curThreadsBusy

  Current worker threads busy count.

### curThreads

    protected int curThreads

  Current worker threads count.

### sequence

    protected int sequence

  Sequence number used to generate thread names.

### rootPool

    protected long rootPool

  Root APR memory pool.

### serverSock

    protected long serverSock

  Server socket "pointer".

### serverSockPool

    protected long serverSockPool

  APR memory pool for the server socket.

### sslContext

    protected long sslContext

  SSL context.

### deferAccept

    protected boolean deferAccept

  Defer accept.

### executor

    protected java.util.concurrent.Executor executor

  External Executor based thread pool.

### maxThreads

    protected int maxThreads

  Maximum amount of worker threads.

### threadPriority

    protected int threadPriority

  Priority of the acceptor and poller threads.

### pollerSize

    protected int pollerSize

  Size of the socket poller.

### sendfileSize

    protected int sendfileSize

  Size of the sendfile (= concurrent files which can be served).

### port

    protected int port

  Server socket port.

### address

    protected java.net.InetAddress address

  Address for the server socket.

### handler

    protected AprEndpoint.Handler handler

  Handling of accepted sockets.

### backlog

    protected int backlog

  Allows the server developer to specify the backlog that should be used for server sockets. By default, this value is 100.

### tcpNoDelay

    protected boolean tcpNoDelay

  Socket TCP no delay.

### soLinger

    protected int soLinger

  Socket linger.

### soTimeout

    protected int soTimeout

  Socket timeout.

### keepAliveTimeout

    protected int keepAliveTimeout

  Keep-Alive timeout.

### pollTime

    protected int pollTime

  Poll interval, in microseconds. The smaller the value, the more CPU the poller will use, but the more responsive to activity it will be.

### daemon

    protected boolean daemon

  The default is true - the created threads will be in daemon mode. If set to false, the control thread will not be daemon - and will keep the process alive.

### name

    protected java.lang.String name

  Name of the thread pool, which will be used for naming child threads.

### useSendfile

    protected boolean useSendfile

  Use endfile for sending static files.

### useComet

    protected boolean useComet

  Allow comet request handling.

### acceptorThreadCount

    protected int acceptorThreadCount

  Acceptor thread count.

### sendfileThreadCount

    protected int sendfileThreadCount

  Sendfile thread count.

### pollerThreadCount

    protected int pollerThreadCount

  Poller thread count.

### pollers

    protected AprEndpoint.Poller[] pollers

  The socket poller.

### pollerRoundRobin

    protected int pollerRoundRobin

### cometPollers

    protected AprEndpoint.Poller[] cometPollers

  The socket poller used for Comet support.

### cometPollerRoundRobin

    protected int cometPollerRoundRobin

### sendfiles

    protected AprEndpoint.Sendfile[] sendfiles

  The static file sender.

### sendfileRoundRobin

    protected int sendfileRoundRobin

### unlockTimeout

    protected int unlockTimeout

  Unlock timeout.

### SSLEnabled

    protected boolean SSLEnabled

  SSL engine.

### SSLProtocol

    protected java.lang.String SSLProtocol

  SSL protocols.

### SSLPassword

    protected java.lang.String SSLPassword

  SSL password (if a cert is encrypted, and no password has been provided, a callback will ask for a password).

### SSLCipherSuite

    protected java.lang.String SSLCipherSuite

  SSL cipher suite.

### SSLCertificateFile

    protected java.lang.String SSLCertificateFile

  SSL certificate file.

### SSLCertificateKeyFile

    protected java.lang.String SSLCertificateKeyFile

  SSL certificate key file.

### SSLCertificateChainFile

    protected java.lang.String SSLCertificateChainFile

  SSL certificate chain file.

### SSLCACertificatePath

    protected java.lang.String SSLCACertificatePath

  SSL CA certificate path.

### SSLCACertificateFile

    protected java.lang.String SSLCACertificateFile

  SSL CA certificate file.

### SSLCARevocationPath

    protected java.lang.String SSLCARevocationPath

  SSL CA revocation path.

### SSLCARevocationFile

    protected java.lang.String SSLCARevocationFile

  SSL CA revocation file.

### SSLVerifyClient

    protected java.lang.String SSLVerifyClient

  SSL verify client.

### SSLVerifyDepth

    protected int SSLVerifyDepth

  SSL verify depth.

### SSLHonorCipherOrder

    protected boolean SSLHonorCipherOrder

### SSLDisableCompression

    protected boolean SSLDisableCompression

  Disables compression of the SSL stream. This thwarts CRIME attack and possibly improves performance by not compressing uncompressible content such as JPEG, etc.

Constructor Detail

### AprEndpoint

    public AprEndpoint()

Method Detail

### setDeferAccept

    public void setDeferAccept(boolean deferAccept)

### getDeferAccept

    public boolean getDeferAccept()

### setExecutor

    public void setExecutor(java.util.concurrent.Executor executor)

### getExecutor

    public java.util.concurrent.Executor getExecutor()

### setMaxThreads

    public void setMaxThreads(int maxThreads)

### getMaxThreads

    public int getMaxThreads()

### setThreadPriority

    public void setThreadPriority(int threadPriority)

### getThreadPriority

    public int getThreadPriority()

### setPollerSize

    public void setPollerSize(int pollerSize)

### getPollerSize

    public int getPollerSize()

### setSendfileSize

    public void setSendfileSize(int sendfileSize)

### getSendfileSize

    public int getSendfileSize()

### getPort

    public int getPort()

### setPort

    public void setPort(int port)

### getAddress

    public java.net.InetAddress getAddress()

### setAddress

    public void setAddress(java.net.InetAddress address)

### setHandler

    public void setHandler(AprEndpoint.Handler handler)

### getHandler

    public AprEndpoint.Handler getHandler()

### setBacklog

    public void setBacklog(int backlog)

### getBacklog

    public int getBacklog()

### getTcpNoDelay

    public boolean getTcpNoDelay()

### setTcpNoDelay

    public void setTcpNoDelay(boolean tcpNoDelay)

### getSoLinger

    public int getSoLinger()

### setSoLinger

    public void setSoLinger(int soLinger)

### getSoTimeout

    public int getSoTimeout()

### setSoTimeout

    public void setSoTimeout(int soTimeout)

### getKeepAliveTimeout

    public int getKeepAliveTimeout()

### setKeepAliveTimeout

    public void setKeepAliveTimeout(int keepAliveTimeout)

### getPollTime

    public int getPollTime()

### setPollTime

    public void setPollTime(int pollTime)

### setDaemon

    public void setDaemon(boolean b)

### getDaemon

    public boolean getDaemon()

### setName

    public void setName(java.lang.String name)

### getName

    public java.lang.String getName()

### setUseSendfile

    public void setUseSendfile(boolean useSendfile)

### getUseSendfile

    public boolean getUseSendfile()

### setUseComet

    public void setUseComet(boolean useComet)

### getUseComet

    public boolean getUseComet()

### setAcceptorThreadCount

    public void setAcceptorThreadCount(int acceptorThreadCount)

### getAcceptorThreadCount

    public int getAcceptorThreadCount()

### setSendfileThreadCount

    public void setSendfileThreadCount(int sendfileThreadCount)

### getSendfileThreadCount

    public int getSendfileThreadCount()

### setPollerThreadCount

    public void setPollerThreadCount(int pollerThreadCount)

### getPollerThreadCount

    public int getPollerThreadCount()

### getPoller

    public AprEndpoint.Poller getPoller()

### getCometPoller

    public AprEndpoint.Poller getCometPoller()

### getSendfile

    public AprEndpoint.Sendfile getSendfile()

### getMaxSpareThreads

    public int getMaxSpareThreads()

  Dummy maxSpareThreads property.

### getMinSpareThreads

    public int getMinSpareThreads()

  Dummy minSpareThreads property.

### getUnlockTimeout

    public int getUnlockTimeout()

### setUnlockTimeout

    public void setUnlockTimeout(int unlockTimeout)

### isSSLEnabled

    public boolean isSSLEnabled()

### setSSLEnabled

    public void setSSLEnabled(boolean SSLEnabled)

### getSSLProtocol

    public java.lang.String getSSLProtocol()

### setSSLProtocol

    public void setSSLProtocol(java.lang.String SSLProtocol)

### getSSLPassword

    public java.lang.String getSSLPassword()

### setSSLPassword

    public void setSSLPassword(java.lang.String SSLPassword)

### getSSLCipherSuite

    public java.lang.String getSSLCipherSuite()

### setSSLCipherSuite

    public void setSSLCipherSuite(java.lang.String SSLCipherSuite)

### getSSLCertificateFile

    public java.lang.String getSSLCertificateFile()

### setSSLCertificateFile

    public void setSSLCertificateFile(java.lang.String SSLCertificateFile)

### getSSLCertificateKeyFile

    public java.lang.String getSSLCertificateKeyFile()

### setSSLCertificateKeyFile

    public void setSSLCertificateKeyFile(java.lang.String SSLCertificateKeyFile)

### getSSLCertificateChainFile

    public java.lang.String getSSLCertificateChainFile()

### setSSLCertificateChainFile

    public void setSSLCertificateChainFile(java.lang.String SSLCertificateChainFile)

### getSSLCACertificatePath

    public java.lang.String getSSLCACertificatePath()

### setSSLCACertificatePath

    public void setSSLCACertificatePath(java.lang.String SSLCACertificatePath)

### getSSLCACertificateFile

    public java.lang.String getSSLCACertificateFile()

### setSSLCACertificateFile

    public void setSSLCACertificateFile(java.lang.String SSLCACertificateFile)

### getSSLCARevocationPath

    public java.lang.String getSSLCARevocationPath()

### setSSLCARevocationPath

    public void setSSLCARevocationPath(java.lang.String SSLCARevocationPath)

### getSSLCARevocationFile

    public java.lang.String getSSLCARevocationFile()

### setSSLCARevocationFile

    public void setSSLCARevocationFile(java.lang.String SSLCARevocationFile)

### getSSLVerifyClient

    public java.lang.String getSSLVerifyClient()

### setSSLVerifyClient

    public void setSSLVerifyClient(java.lang.String SSLVerifyClient)

### getSSLVerifyDepth

    public int getSSLVerifyDepth()

### setSSLVerifyDepth

    public void setSSLVerifyDepth(int SSLVerifyDepth)

### setSSLHonorCipherOrder

    public void setSSLHonorCipherOrder(boolean SSLHonorCipherOrder)

  Set to `true` to enforce the server's cipher order instead of the default which is to allow the client to choose a preferred cipher.

### getSSLHonorCipherOrder

    public boolean getSSLHonorCipherOrder()

### setSSLDisableCompression

    public void setSSLDisableCompression(boolean SSLDisableCompression)

  Set to `true` to disable SSL compression. This thwarts CRIME attack.

### getSSLDisableCompression

    public boolean getSSLDisableCompression()

### getLocalPort

    public int getLocalPort()

  Port in use.

  Specified by:
    `getLocalPort` in class `AbstractEndpoint`

### getKeepAliveCount

    public int getKeepAliveCount()

  Number of keepalive sockets.

### getSendfileCount

    public int getSendfileCount()

  Number of sendfile sockets.

### getCurrentThreadCount

    public int getCurrentThreadCount()

  Return the amount of threads that are managed by the pool.

  Returns:
    the amount of threads that are managed by the pool

### getCurrentThreadsBusy

    public int getCurrentThreadsBusy()

  Return the amount of threads that are in use

  Returns:
    the amount of threads that are in use

### isRunning

    public boolean isRunning()

  Return the state of the endpoint.

  Returns:
    true if the endpoint is running, false otherwise

### isPaused

    public boolean isPaused()

  Return the state of the endpoint.

  Returns:
    true if the endpoint is paused, false otherwise

### init

    public void init()
              throws java.lang.Exception

  Initialize the endpoint.

  Throws:
    `java.lang.Exception`

### start

    public void start()
               throws java.lang.Exception

  Start the APR endpoint, creating acceptor, poller and sendfile threads.

  Throws:
    `java.lang.Exception`

### pause

    public void pause()

  Pause the endpoint, which will make it stop accepting new sockets.

### resume

    public void resume()

  Resume the endpoint, which will make it start accepting new sockets again.

### stop

    public void stop()

  Stop the endpoint. This will cause all processing threads to stop.

### destroy

    public void destroy()
                 throws java.lang.Exception

  Deallocate APR memory pools, and close server socket.

  Throws:
    `java.lang.Exception`

### getSequence

    protected int getSequence()

  Get a sequence number used for thread naming.

### unlockAccept

    protected void unlockAccept()

  Unlock the server socket accept using a bugus connection.

### setSocketOptions

    protected boolean setSocketOptions(long socket)

  Process the specified connection.

### createWorkerThread

    protected AprEndpoint.Worker createWorkerThread()

  Create (or allocate) and return an available processor for use in processing a specific HTTP request, if possible. If the maximum allowed processors have already been created and are in use, return `null` instead.

### newWorkerThread

    protected AprEndpoint.Worker newWorkerThread()

  Create and return a new processor suitable for processing HTTP requests and returning the corresponding responses.

### getWorkerThread

    protected AprEndpoint.Worker getWorkerThread()

  Return a new worker thread, and block while to worker is available.

### recycleWorkerThread

    protected void recycleWorkerThread(AprEndpoint.Worker workerThread)

  Recycle the specified Processor so that it can be used again.

  Parameters:
    `workerThread` - The processor to be recycled

### allocatePoller

    protected long allocatePoller(int size,
                                  long pool,
                                  int timeout)

  Allocate a new poller of the specified size.

### processSocketWithOptions

    protected boolean processSocketWithOptions(long socket)

  Process given socket.

### processSocket

    protected boolean processSocket(long socket)

  Process given socket.

### processSocket

    protected boolean processSocket(long socket,
                                    SocketStatus status)

  Process given socket for an event.

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