Author: jvermillard
Date: Wed Jun 27 05:42:39 2007
New Revision: 551146
URL: http://svn.apache.org/viewvc?view=rev&rev=551146
Log:
APR (Apache Portable Runtime) based transport (WIP)
Added:
mina/sandbox/jvermillard/apr/
mina/sandbox/jvermillard/apr/lib/
mina/sandbox/jvermillard/apr/lib/libapr-1.so (with props)
mina/sandbox/jvermillard/apr/lib/libapr-1.so.0 (with props)
mina/sandbox/jvermillard/apr/lib/libapr-1.so.0.2.9 (with props)
mina/sandbox/jvermillard/apr/lib/libtcnative-1.a (with props)
mina/sandbox/jvermillard/apr/lib/libtcnative-1.lai
mina/sandbox/jvermillard/apr/lib/libtcnative-1.so (with props)
mina/sandbox/jvermillard/apr/lib/libtcnative-1.so.0 (with props)
mina/sandbox/jvermillard/apr/lib/libtcnative-1.so.0.1.8 (with props)
mina/sandbox/jvermillard/apr/lib/tomcat-native-1.0.0.jar (with props)
mina/sandbox/jvermillard/apr/src/
mina/sandbox/jvermillard/apr/src/main/
mina/sandbox/jvermillard/apr/src/main/java/
mina/sandbox/jvermillard/apr/src/main/java/org/
mina/sandbox/jvermillard/apr/src/main/java/org/apache/
mina/sandbox/jvermillard/apr/src/main/java/org/apache/mina/
mina/sandbox/jvermillard/apr/src/main/java/org/apache/mina/transport/
mina/sandbox/jvermillard/apr/src/main/java/org/apache/mina/transport/apr/
mina/sandbox/jvermillard/apr/src/main/java/org/apache/mina/transport/apr/APRConnector.java
mina/sandbox/jvermillard/apr/src/main/java/org/apache/mina/transport/apr/APRIoProcessor.java
mina/sandbox/jvermillard/apr/src/main/java/org/apache/mina/transport/apr/APRSession.java
mina/sandbox/jvermillard/apr/src/main/java/org/apache/mina/transport/apr/APRSessionConfig.java
mina/sandbox/jvermillard/apr/src/main/java/org/apache/mina/transport/apr/APRSessionImpl.java
Added: mina/sandbox/jvermillard/apr/lib/libapr-1.so
URL:
http://svn.apache.org/viewvc/mina/sandbox/jvermillard/apr/lib/libapr-1.so?view=auto&rev=551146
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Added: mina/sandbox/jvermillard/apr/lib/libapr-1.so.0
URL:
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Added: mina/sandbox/jvermillard/apr/lib/libapr-1.so.0.2.9
URL:
http://svn.apache.org/viewvc/mina/sandbox/jvermillard/apr/lib/libapr-1.so.0.2.9?view=auto&rev=551146
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Added: mina/sandbox/jvermillard/apr/lib/libtcnative-1.a
URL:
http://svn.apache.org/viewvc/mina/sandbox/jvermillard/apr/lib/libtcnative-1.a?view=auto&rev=551146
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Added: mina/sandbox/jvermillard/apr/lib/libtcnative-1.lai
URL:
http://svn.apache.org/viewvc/mina/sandbox/jvermillard/apr/lib/libtcnative-1.lai?view=auto&rev=551146
==============================================================================
--- mina/sandbox/jvermillard/apr/lib/libtcnative-1.lai (added)
+++ mina/sandbox/jvermillard/apr/lib/libtcnative-1.lai Wed Jun 27 05:42:39 2007
@@ -0,0 +1,35 @@
+# libtcnative-1.la - a libtool library file
+# Generated by ltmain.sh - GNU libtool 1.5.20 (1.1220.2.287 2005/08/31
18:54:15)
+#
+# Please DO NOT delete this file!
+# It is necessary for linking the library.
+
+# The name that we can dlopen(3).
+dlname='libtcnative-1.so.0'
+
+# Names of this library.
+library_names='libtcnative-1.so.0.1.8 libtcnative-1.so.0 libtcnative-1.so'
+
+# The name of the static archive.
+old_library='libtcnative-1.a'
+
+# Libraries that this one depends upon.
+dependency_libs=' /usr/local/apr/lib/libapr-1.la -luuid -lrt -lcrypt -lpthread
-ldl -lssl -lcrypto'
+
+# Version information for libtcnative-1.
+current=1
+age=1
+revision=8
+
+# Is this an already installed library?
+installed=yes
+
+# Should we warn about portability when linking against -modules?
+shouldnotlink=no
+
+# Files to dlopen/dlpreopen
+dlopen=''
+dlpreopen=''
+
+# Directory that this library needs to be installed in:
+libdir='/usr/local/apr/lib'
Added: mina/sandbox/jvermillard/apr/lib/libtcnative-1.so
URL:
http://svn.apache.org/viewvc/mina/sandbox/jvermillard/apr/lib/libtcnative-1.so?view=auto&rev=551146
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Added: mina/sandbox/jvermillard/apr/lib/libtcnative-1.so.0
URL:
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Added: mina/sandbox/jvermillard/apr/lib/libtcnative-1.so.0.1.8
URL:
http://svn.apache.org/viewvc/mina/sandbox/jvermillard/apr/lib/libtcnative-1.so.0.1.8?view=auto&rev=551146
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Added: mina/sandbox/jvermillard/apr/lib/tomcat-native-1.0.0.jar
URL:
http://svn.apache.org/viewvc/mina/sandbox/jvermillard/apr/lib/tomcat-native-1.0.0.jar?view=auto&rev=551146
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Added:
mina/sandbox/jvermillard/apr/src/main/java/org/apache/mina/transport/apr/APRConnector.java
URL:
http://svn.apache.org/viewvc/mina/sandbox/jvermillard/apr/src/main/java/org/apache/mina/transport/apr/APRConnector.java?view=auto&rev=551146
==============================================================================
---
mina/sandbox/jvermillard/apr/src/main/java/org/apache/mina/transport/apr/APRConnector.java
(added)
+++
mina/sandbox/jvermillard/apr/src/main/java/org/apache/mina/transport/apr/APRConnector.java
Wed Jun 27 05:42:39 2007
@@ -0,0 +1,83 @@
+package org.apache.mina.transport.apr;
+
+import java.net.SocketAddress;
+import java.util.concurrent.Executor;
+
+import org.apache.mina.common.ConnectFuture;
+import org.apache.mina.common.TransportType;
+import org.apache.mina.common.support.BaseIoConnector;
+import org.apache.mina.common.support.IoServiceListenerSupport;
+import org.apache.mina.util.NewThreadExecutor;
+import org.apache.tomcat.jni.Pool;
+
+public class APRConnector extends BaseIoConnector {
+
+ /**
+ * @noinspection StaticNonFinalField
+ */
+ private static volatile int nextId = 0;
+
+ private final Object lock = new Object();
+ private final int id = nextId++;
+ private final String threadName = "APRConnector-" + id;
+ private final int processorCount;
+ private final Executor executor;
+ private final APRIoProcessor[] ioProcessors;
+
+ // APR memory pool (package wide mother pool)
+ static long pool = -1;
+
+ /**
+ * Create a connector with a single processing thread using a
NewThreadExecutor
+ */
+ public APRConnector()
+ {
+ this( 1, new NewThreadExecutor() );
+ }
+
+ /**
+ * Create a connector with the desired number of processing threads
+ *
+ * @param processorCount Number of processing threads
+ * @param executor Executor to use for launching threads
+ */
+ public APRConnector( int processorCount, Executor executor )
+ {
+ super( null ); // TODO : DEFAULT CONFIG
+ if( processorCount < 1 )
+ {
+ throw new IllegalArgumentException( "Must have at least one
processor" );
+ }
+
+ if(pool==-1)
+ pool = Pool.create(0);
+
+ this.executor = executor;
+ this.processorCount = processorCount;
+ ioProcessors = new APRIoProcessor[processorCount];
+
+ for( int i = 0; i < processorCount; i++ )
+ {
+ ioProcessors[i] = new APRIoProcessor(
"APRConnectorIoProcessor-" + id + "." + i, executor );
+ }
+ }
+
+
+
+ @Override
+ protected ConnectFuture doConnect(SocketAddress remoteAddress,
SocketAddress localAddress) {
+ // TODO Auto-generated method stub
+ return null;
+ }
+
+ public TransportType getTransportType() {
+ // TODO Auto-generated method stub
+ return null;
+ }
+
+ @Override
+ protected IoServiceListenerSupport getListeners()
+ {
+ return super.getListeners();
+ }
+}
Added:
mina/sandbox/jvermillard/apr/src/main/java/org/apache/mina/transport/apr/APRIoProcessor.java
URL:
http://svn.apache.org/viewvc/mina/sandbox/jvermillard/apr/src/main/java/org/apache/mina/transport/apr/APRIoProcessor.java?view=auto&rev=551146
==============================================================================
---
mina/sandbox/jvermillard/apr/src/main/java/org/apache/mina/transport/apr/APRIoProcessor.java
(added)
+++
mina/sandbox/jvermillard/apr/src/main/java/org/apache/mina/transport/apr/APRIoProcessor.java
Wed Jun 27 05:42:39 2007
@@ -0,0 +1,325 @@
+package org.apache.mina.transport.apr;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Queue;
+import java.util.concurrent.ConcurrentLinkedQueue;
+import java.util.concurrent.Executor;
+
+import org.apache.mina.common.ByteBuffer;
+import org.apache.mina.common.ExceptionMonitor;
+import org.apache.mina.common.IdleStatus;
+import org.apache.mina.common.IoService;
+import org.apache.mina.common.IoSession;
+import org.apache.mina.common.WriteRequest;
+import org.apache.mina.common.support.IoServiceListenerSupport;
+import org.apache.mina.util.NamePreservingRunnable;
+import org.apache.tomcat.jni.Error;
+import org.apache.tomcat.jni.Poll;
+import org.apache.tomcat.jni.Pool;
+import org.apache.tomcat.jni.Socket;
+import org.apache.tomcat.jni.Status;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class APRIoProcessor {
+
+ private final Logger logger = LoggerFactory.getLogger(getClass());
+
+ private final Object lock = new Object();
+
+ private final String threadName;
+
+ private final Executor executor;
+
+ private long pool = 0; // memory pool
+
+ private long pollset = 0; // socket poller
+
+ private final Queue<APRSessionImpl> newSessions = new
ConcurrentLinkedQueue<APRSessionImpl>();
+
+ private final Queue<APRSessionImpl> removingSessions = new
ConcurrentLinkedQueue<APRSessionImpl>();
+
+ private final Queue<APRSessionImpl> flushingSessions = new
ConcurrentLinkedQueue<APRSessionImpl>();
+
+ private final Queue<APRSessionImpl> trafficControllingSessions = new
ConcurrentLinkedQueue<APRSessionImpl>();
+
+ private final Map<Long, APRSessionImpl> managedSessions = new
HashMap<Long, APRSessionImpl>();
+
+ private long lastIdleCheckTime = System.currentTimeMillis();
+
+ private int socketCount = 0;
+
+ private Worker worker;
+
+ APRIoProcessor(String threadName, Executor executor) {
+ this.threadName = threadName;
+ this.executor = executor;
+
+ // initialize a memory pool for APR functions
+ pool = Pool.create(APRConnector.pool);
+ try {
+
+ // TODO : optimize/parametrize those values
+ pollset = Poll.create(32, pool, 0, 10000000);
+ } catch (Error e) {
+ logger.error("APR Error : " + e.getDescription(), e);
+ // TODO : send that to the good logger
+ }
+ }
+
+ void addNew(APRSessionImpl session) {
+ newSessions.offer(session);
+
+ startupWorker();
+ }
+
+ void remove(APRSessionImpl session) {
+ scheduleRemove(session);
+ startupWorker();
+ }
+
+ private void startupWorker() {
+ synchronized (lock) {
+ if (worker == null) {
+ worker = new Worker();
+ executor.execute(new
NamePreservingRunnable(worker));
+ }
+ }
+ }
+
+ void flush(APRSessionImpl session) {
+ scheduleFlush(session);
+ }
+
+ private void scheduleRemove(APRSessionImpl session) {
+ removingSessions.offer(session);
+ }
+
+ // TODO : do something with traffic control
+ private void scheduleTrafficControl(APRSessionImpl session) {
+ trafficControllingSessions.offer(session);
+ }
+
+ private void scheduleFlush(APRSessionImpl session) {
+ flushingSessions.offer(session);
+ }
+
+ private void doAddNew() {
+ for (;;) {
+ APRSessionImpl session = newSessions.poll();
+
+ if (session == null) {
+ break;
+ }
+
+ // polling the socket for write and read
+ // FIXME : perhaps we should oll write only if needed
for save CPU, but actually it's too complex for me :)
+ int rv = Poll.add(pollset, session.getAPRSocket(),
Poll.APR_POLLIN
+ | Poll.APR_POLLOUT);
+ if (rv == Status.APR_SUCCESS) {
+ System.out.println("Added worker to pollset");
+ managedSessions.put(session.getAPRSocket(),
session);
+ socketCount++;
+ // AbstractIoFilterChain.CONNECT_FUTURE is
cleared inside here
+ // in AbstractIoFilterChain.fireSessionOpened().
+
getServiceListeners(session).fireSessionCreated(session);
+ } else {
+ // FIXME: find a way to bring the real APR
error from returned codes
+
session.getFilterChain().fireExceptionCaught(session,
+ new RuntimeException("APR
Error"));
+ }
+ }
+ }
+
+ private void doRemove() {
+ for (;;) {
+ APRSessionImpl session = removingSessions.poll();
+
+ if (session == null) {
+ break;
+ }
+
+ // remove of the pollset
+ Poll.remove(pollset, session.getAPRSocket());
+
+ // close the socket
+ Socket.close(session.getAPRSocket());
+ clearWriteRequestQueue(session);
+
getServiceListeners(session).fireSessionDestroyed(session);
+ }
+ }
+
+ private void read(APRSessionImpl session) {
+ byte[] buf = session.getReadBuffer();
+ int bytes = Socket.recv(session.getAPRSocket(), buf, 0, -1);
+ if (bytes > 0) {
+ ByteBuffer bbuf = ByteBuffer.allocate(bytes);
+ bbuf.put(buf, 0, bytes);
+ bbuf.flip();
+ session.increaseReadBytes(bytes);
+ session.getFilterChain().fireMessageReceived(session,
bbuf);
+ } else if (bytes < 0) {
+ logger.debug("Read {} bytes, scheduling for remove",
bytes);
+ scheduleRemove(session);
+ }
+ }
+
+ private void write(APRSessionImpl session) {
+ if (session.getWriteRequestQueue().size() <= 0)
+ return;
+ Queue<WriteRequest> writeRequestQueue =
session.getWriteRequestQueue();
+
+ for (;;) {
+
+ WriteRequest req;
+
+ synchronized (writeRequestQueue) {
+ req = writeRequestQueue.peek();
+ }
+
+ if (req == null) {
+ break;
+ }
+
+ ByteBuffer buf = (ByteBuffer) req.getMessage();
+ if (buf.remaining() == 0) {
+ synchronized (writeRequestQueue) {
+ writeRequestQueue.poll();
+ }
+ session.increaseWrittenMessages();
+ buf.reset();
+
session.getFilterChain().fireMessageSent(session, req);
+ continue;
+ }
+ // be sure APR_SO_NONBLOCK was set, or it will block
+ int toWrite = buf.remaining();
+ int writtenBytes = Socket.sendb(session.getAPRSocket(),
buf.buf(),
+ 0, toWrite);
+ if (writtenBytes > 0) {
+ // increase
+ session.increaseWrittenBytes(writtenBytes);
+ }
+
+ // kernel buffer full for this socket, wait next polling
+ if (buf.hasRemaining())
+ break;
+ }
+ }
+
+ private void clearWriteRequestQueue(APRSessionImpl session) {
+ Queue<WriteRequest> writeRequestQueue =
session.getWriteRequestQueue();
+ WriteRequest req;
+
+ while ((req = writeRequestQueue.poll()) != null) {
+ req.getFuture().setWritten(false);
+ }
+ }
+
+ private void notifyIdleness() {
+ // process idle sessions
+ long currentTime = System.currentTimeMillis();
+ if ((currentTime - lastIdleCheckTime) >= 1000) {
+ lastIdleCheckTime = currentTime;
+ for (APRSessionImpl session : managedSessions.values())
{
+ notifyIdleness(session, currentTime);
+ }
+ }
+ }
+
+ private void notifyIdleness(APRSessionImpl session, long currentTime) {
+ notifyIdleness0(session, currentTime, session
+ .getIdleTimeInMillis(IdleStatus.BOTH_IDLE),
+ IdleStatus.BOTH_IDLE,
Math.max(session.getLastIoTime(), session
+
.getLastIdleTime(IdleStatus.BOTH_IDLE)));
+ notifyIdleness0(session, currentTime, session
+ .getIdleTimeInMillis(IdleStatus.READER_IDLE),
+ IdleStatus.READER_IDLE,
Math.max(session.getLastReadTime(),
+
session.getLastIdleTime(IdleStatus.READER_IDLE)));
+ notifyIdleness0(session, currentTime, session
+ .getIdleTimeInMillis(IdleStatus.WRITER_IDLE),
+ IdleStatus.WRITER_IDLE,
Math.max(session.getLastWriteTime(),
+
session.getLastIdleTime(IdleStatus.WRITER_IDLE)));
+
+ notifyWriteTimeout(session, currentTime, session
+ .getWriteTimeoutInMillis(),
session.getLastWriteTime());
+ }
+
+ private void notifyIdleness0(APRSessionImpl session, long currentTime,
+ long idleTime, IdleStatus status, long lastIoTime) {
+ if (idleTime > 0 && lastIoTime != 0
+ && (currentTime - lastIoTime) >= idleTime) {
+ session.increaseIdleCount(status);
+ session.getFilterChain().fireSessionIdle(session,
status);
+ }
+ }
+
+ private void notifyWriteTimeout(APRSessionImpl session, long
currentTime,
+ long writeTimeout, long lastIoTime) {
+ // TODO : I understand nothing here :)
+ }
+
+ private IoServiceListenerSupport getServiceListeners(IoSession session)
{
+ IoService service = session.getService();
+ if (service instanceof APRConnector) {
+ return ((APRConnector) service).getListeners();
+ } else
+ return null;
+ }
+
+ private class Worker implements Runnable {
+ public void run() {
+
Thread.currentThread().setName(APRIoProcessor.this.threadName);
+
+ for (;;) {
+
+ try {
+
+ // pop new sessions
+ doAddNew();
+
+ if (socketCount < 1) {
+ return; // no need to poll an
empty pollset
+ }
+
+ // TODO : doUpdateTrafficMask();
+
+ /* is it OK ? : Two times size of the
created pollset */
+ long[] desc = new long[socketCount * 2];
+
+ /* use 100 milliseconds poll timeout,
TODO : parametrize for more latency/CPU usage control*/
+ int rv = Poll.poll(pollset, 100000,
desc, false);
+ if (rv > 0) {
+ for (int n = 0; n < rv; n++) {
+ long clientSock =
desc[n * 2 + 1];
+ logger.debug("Poll
flags " + desc[n * 2]);
+
+ APRSessionImpl session
= managedSessions
+
.get(clientSock);
+
+ if
(!session.isConnected()) {
+
clearWriteRequestQueue(session);
+ continue;
+ }
+
+ if (desc[n * 2] ==
Poll.APR_POLLIN)
+ read(session);
+ if (desc[n * 2] ==
Poll.APR_POLLOUT)
+ write(session);
+ }
+ }
+ notifyIdleness();
+ doRemove();
+ } catch (Throwable t) {
+
ExceptionMonitor.getInstance().exceptionCaught(t);
+
+ try {
+ Thread.sleep(1000);
+ } catch (InterruptedException e1) {
+
ExceptionMonitor.getInstance().exceptionCaught(e1);
+ }
+ }
+ }
+ }
+ }
+}
Added:
mina/sandbox/jvermillard/apr/src/main/java/org/apache/mina/transport/apr/APRSession.java
URL:
http://svn.apache.org/viewvc/mina/sandbox/jvermillard/apr/src/main/java/org/apache/mina/transport/apr/APRSession.java?view=auto&rev=551146
==============================================================================
---
mina/sandbox/jvermillard/apr/src/main/java/org/apache/mina/transport/apr/APRSession.java
(added)
+++
mina/sandbox/jvermillard/apr/src/main/java/org/apache/mina/transport/apr/APRSession.java
Wed Jun 27 05:42:39 2007
@@ -0,0 +1,22 @@
+package org.apache.mina.transport.apr;
+
+import java.net.InetSocketAddress;
+import java.util.Queue;
+
+import org.apache.mina.common.IoSession;
+import org.apache.mina.common.WriteRequest;
+
+public interface APRSession extends IoSession {
+
+
+ APRSessionConfig getConfig();
+ InetSocketAddress getRemoteAddress();
+ InetSocketAddress getLocalAddress();
+ InetSocketAddress getServiceAddress();
+
+ // TODO : move to package only visible implementation
+ long getAPRSocket();
+ byte[] getReadBuffer();
+ void increaseReadBytes( int increment );
+ Queue<WriteRequest> getWriteRequestQueue();
+}
Added:
mina/sandbox/jvermillard/apr/src/main/java/org/apache/mina/transport/apr/APRSessionConfig.java
URL:
http://svn.apache.org/viewvc/mina/sandbox/jvermillard/apr/src/main/java/org/apache/mina/transport/apr/APRSessionConfig.java?view=auto&rev=551146
==============================================================================
---
mina/sandbox/jvermillard/apr/src/main/java/org/apache/mina/transport/apr/APRSessionConfig.java
(added)
+++
mina/sandbox/jvermillard/apr/src/main/java/org/apache/mina/transport/apr/APRSessionConfig.java
Wed Jun 27 05:42:39 2007
@@ -0,0 +1,7 @@
+package org.apache.mina.transport.apr;
+
+import org.apache.mina.common.IoSessionConfig;
+
+public interface APRSessionConfig extends IoSessionConfig {
+
+}
Added:
mina/sandbox/jvermillard/apr/src/main/java/org/apache/mina/transport/apr/APRSessionImpl.java
URL:
http://svn.apache.org/viewvc/mina/sandbox/jvermillard/apr/src/main/java/org/apache/mina/transport/apr/APRSessionImpl.java?view=auto&rev=551146
==============================================================================
---
mina/sandbox/jvermillard/apr/src/main/java/org/apache/mina/transport/apr/APRSessionImpl.java
(added)
+++
mina/sandbox/jvermillard/apr/src/main/java/org/apache/mina/transport/apr/APRSessionImpl.java
Wed Jun 27 05:42:39 2007
@@ -0,0 +1,86 @@
+package org.apache.mina.transport.apr;
+
+import java.net.InetSocketAddress;
+import java.util.Queue;
+
+import org.apache.mina.common.IoFilterChain;
+import org.apache.mina.common.IoHandler;
+import org.apache.mina.common.IoService;
+import org.apache.mina.common.TransportType;
+import org.apache.mina.common.WriteRequest;
+import org.apache.mina.common.support.BaseIoSession;
+
+public class APRSessionImpl extends BaseIoSession implements APRSession {
+
+ @Override
+ protected void updateTrafficMask() {
+ // TODO Auto-generated method stub
+
+ }
+
+ public long getAPRSocket() {
+ // TODO Auto-generated method stub
+ return 0;
+ }
+
+ public APRSessionConfig getConfig() {
+ // TODO Auto-generated method stub
+ return null;
+ }
+
+ public InetSocketAddress getLocalAddress() {
+ // TODO Auto-generated method stub
+ return null;
+ }
+
+ public byte[] getReadBuffer() {
+ // TODO Auto-generated method stub
+ return null;
+ }
+
+ public InetSocketAddress getRemoteAddress() {
+ // TODO Auto-generated method stub
+ return null;
+ }
+
+ public Queue<WriteRequest> getWriteRequestQueue() {
+ // TODO Auto-generated method stub
+ return null;
+ }
+
+ public IoFilterChain getFilterChain() {
+ // TODO Auto-generated method stub
+ return null;
+ }
+
+ public IoHandler getHandler() {
+ // TODO Auto-generated method stub
+ return null;
+ }
+
+ public int getScheduledWriteBytes() {
+ // TODO Auto-generated method stub
+ return 0;
+ }
+
+ public int getScheduledWriteMessages() {
+ // TODO Auto-generated method stub
+ return 0;
+ }
+
+ public IoService getService() {
+ // TODO Auto-generated method stub
+ return null;
+ }
+
+ public TransportType getTransportType() {
+ // TODO Auto-generated method stub
+ return null;
+ }
+
+ @Override
+ public InetSocketAddress getServiceAddress() {
+ return (InetSocketAddress) super.getServiceAddress();
+ }
+
+}
