org.openqa.jetty.util

Class ThreadedServer

java.lang.Object

org.openqa.jetty.util.ThreadPool

org.openqa.jetty.util.ThreadedServer

All Implemented Interfaces:

Serializable, LifeCycle

Direct Known Subclasses:

AJP13Listener, SocketListener

public abstract class ThreadedServer
extends ThreadPool

Threaded socket server. This class listens at a socket and gives the connections received to a pool of Threads

The class is abstract and derived classes must provide the handling for the connections.

The properties THREADED_SERVER_MIN_THREADS and THREADED_SERVER_MAX_THREADS can be set to control the number of threads created.

Version:

$Id: ThreadedServer.java,v 1.41 2005/12/10 00:38:20 gregwilkins Exp $

Author:

Greg Wilkins

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.openqa.jetty.util.ThreadPool

ThreadPool.PoolThread

Field Summary

Fields inherited from class org.openqa.jetty.util.ThreadPool

__DAEMON, __PRIORITY

Constructor Summary

Constructors

Constructor and Description
ThreadedServer()
ThreadedServer(InetAddress address, int port) Construct for specific address and port.
ThreadedServer(InetAddrPort address) Construct for specific address and port.
ThreadedServer(int port) Construct for specific port.
ThreadedServer(String host, int port) Construct for specific address and port.

Method Summary

Methods

Modifier and Type	Method and Description
protected Socket	acceptSocket(int timeout) Accept socket connection.
protected Socket	acceptSocket(ServerSocket ignored, int timeout) Deprecated. use acceptSocket(int timeout)
int	getAcceptorThreads() Get the nmber of threads used to accept connections
int	getAcceptQueueSize()
String	getHost()
InetAddress	getInetAddress()
InetAddrPort	getInetAddrPort()
int	getLingerTimeSecs()
int	getMaxReadTimeMs()
int	getPort()
ServerSocket	getServerSocket()
boolean	getTcpNoDelay()
void	handle(Object job) Handle Job.
protected void	handleConnection(InputStream in, OutputStream out) Handle new connection.
protected void	handleConnection(Socket connection) Handle new connection.
protected ServerSocket	newServerSocket(InetAddrPort address, int acceptQueueSize) New server socket.
void	open() Open the server socket.
void	setAcceptorThreads(int n) Set the number of threads used to accept connections.
void	setAcceptQueueSize(int acceptQueueSize) The size of the queue for unaccepted connections.
void	setHost(String host)
void	setInetAddress(InetAddress addr)
void	setInetAddrPort(InetAddrPort address) Set the server InetAddress and port.
void	setLingerTimeSecs(int ls)
void	setMaxReadTimeMs(int ms) Deprecated. maxIdleTime is used instead.
void	setPort(int port)
void	setTcpNoDelay(boolean tcpNoDelay)
void	start() Start the LifeCycle.
void	stop() Stop the ThreadPool.
protected void	stopJob(Thread thread, Object job) Kill a job.
String	toString()

Methods inherited from class org.openqa.jetty.util.ThreadPool

getIdleThreads, getMaxIdleTimeMs, getMaxThreads, getMinThreads, getName, getPoolName, getThreads, getThreadsPriority, isDaemon, isStarted, join, run, setDaemon, setMaxIdleTimeMs, setMaxStopTimeMs, setMaxThreads, setMinThreads, setName, setPoolName, setThreadsPriority, shrink

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

ThreadedServer

public ThreadedServer()

ThreadedServer

public ThreadedServer(int port)

Construct for specific port.

ThreadedServer

public ThreadedServer(InetAddress address,
              int port)

Construct for specific address and port.

ThreadedServer

public ThreadedServer(String host,
              int port)
               throws UnknownHostException

Construct for specific address and port.

Throws:

UnknownHostException

ThreadedServer

public ThreadedServer(InetAddrPort address)

Construct for specific address and port.

Method Detail

getServerSocket

public ServerSocket getServerSocket()

Returns:

The ServerSocket

setInetAddrPort

public void setInetAddrPort(InetAddrPort address)

Set the server InetAddress and port.

Parameters:

address - The Address to listen on, or 0.0.0.0:port for all interfaces.

getInetAddrPort

public InetAddrPort getInetAddrPort()

Returns:

IP Address and port in a new Instance of InetAddrPort.

setHost

public void setHost(String host)
             throws UnknownHostException

Parameters:

host -

Throws:

UnknownHostException

getHost

public String getHost()

Returns:

Host name

setInetAddress

public void setInetAddress(InetAddress addr)

Parameters:

addr -

getInetAddress

public InetAddress getInetAddress()

Returns:

IP Address

setPort

public void setPort(int port)

Parameters:

port -

getPort

public int getPort()

Returns:

port number

setMaxReadTimeMs

public void setMaxReadTimeMs(int ms)

Deprecated. maxIdleTime is used instead.

Set Max Read Time.

getMaxReadTimeMs

public int getMaxReadTimeMs()

Returns:

milliseconds

setLingerTimeSecs

public void setLingerTimeSecs(int ls)

Parameters:

ls - seconds to linger or -1 to disable linger.

getLingerTimeSecs

public int getLingerTimeSecs()

Returns:

seconds.

setTcpNoDelay

public void setTcpNoDelay(boolean tcpNoDelay)

Parameters:

tcpNoDelay - if true then setTcpNoDelay(true) is called on accepted sockets.

getTcpNoDelay

public boolean getTcpNoDelay()

Returns:

true if setTcpNoDelay(true) is called on accepted sockets.

getAcceptQueueSize

public int getAcceptQueueSize()

Returns:

Returns the acceptQueueSize or -1 if not set.

setAcceptQueueSize

public void setAcceptQueueSize(int acceptQueueSize)

The size of the queue for unaccepted connections. If not set, will default to greater of maxThreads or 50.

Parameters:

acceptQueueSize - The acceptQueueSize to set.

setAcceptorThreads

public void setAcceptorThreads(int n)

Set the number of threads used to accept connections. This should normally be 1, except when multiple CPUs are available and low latency is a high priority.

getAcceptorThreads

public int getAcceptorThreads()

Get the nmber of threads used to accept connections

handleConnection

protected void handleConnection(InputStream in,
                    OutputStream out)

Handle new connection. This method should be overridden by the derived class to implement the required handling. It is called by a thread created for it and does not need to return until it has finished it's task

handleConnection

protected void handleConnection(Socket connection)
                         throws IOException

Handle new connection. If access is required to the actual socket, override this method instead of handleConnection(InputStream in,OutputStream out). The default implementation of this just calls handleConnection(InputStream in,OutputStream out).

Throws:

IOException

handle

public void handle(Object job)

Handle Job. Implementation of ThreadPool.handle(), calls handleConnection.

Overrides:

handle in class ThreadPool

Parameters:

job - A Connection.

newServerSocket

protected ServerSocket newServerSocket(InetAddrPort address,
                           int acceptQueueSize)
                                throws IOException

New server socket. Creates a new servers socket. May be overriden by derived class to create specialist serversockets (eg SSL).

Parameters:

address - Address and port

acceptQueueSize - Accept queue size

Returns:

The new ServerSocket

Throws:

IOException

acceptSocket

protected Socket acceptSocket(ServerSocket ignored,
                  int timeout)

Deprecated. use acceptSocket(int timeout)

Accept socket connection. May be overriden by derived class to create specialist serversockets (eg SSL).

Parameters:

ignored -

timeout - The time to wait for a connection. Normally passed the ThreadPool maxIdleTime.

Returns:

Accepted Socket

acceptSocket

protected Socket acceptSocket(int timeout)

Accept socket connection. May be overridden by derived class to create specialist serversockets (eg SSL).

Parameters:

timeout - The time to wait for a connection. Normally passed the ThreadPool maxIdleTime.

Returns:

Accepted Socket

open

public void open()
          throws IOException

Open the server socket. This method can be called to open the server socket in advance of starting the listener. This can be used to test if the port is available.

Throws:

IOException - if an error occurs

start

public void start()
           throws Exception

Description copied from interface: LifeCycle

Start the LifeCycle.

Specified by:

start in interface LifeCycle

Overrides:

start in class ThreadPool

Throws:

Exception - An arbitrary exception may be thrown.

stop

public void stop()
          throws InterruptedException

Description copied from class: ThreadPool

Stop the ThreadPool. New jobs are no longer accepted,idle threads are interrupted and stopJob is called on active threads. The method then waits min(getMaxStopTimeMs(),getMaxIdleTimeMs()), for all jobs to stop, at which time killJob is called.

Specified by:

stop in interface LifeCycle

Overrides:

stop in class ThreadPool

Throws:

InterruptedException - Stopping a lifecycle is rarely atomic and may be interrupted by another thread. If this happens InterruptedException is throw and the component will be in an indeterminant state and should probably be discarded.

stopJob

protected void stopJob(Thread thread,
           Object job)

Kill a job. This method closes IDLE and socket associated with a job

Overrides:

stopJob in class ThreadPool

Parameters:

thread -

job -

toString

public String toString()

Overrides:

toString in class Object