//
// ========================================================================
// Copyright (c) 1995-2014 Mort Bay Consulting Pty. Ltd.
// ------------------------------------------------------------------------
// All rights reserved. This program and the accompanying materials
// are made available under the terms of the Eclipse Public License v1.0
// and Apache License v2.0 which accompanies this distribution.
//
// The Eclipse Public License is available at
// http://www.eclipse.org/legal/epl-v10.html
//
// The Apache License v2.0 is available at
// http://www.opensource.org/licenses/apache2.0.php
//
// You may elect to redistribute this code under either of these licenses.
// ========================================================================
//
package org.eclipse.jetty.io.ssl;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.channels.ClosedChannelException;
import java.util.Arrays;
import java.util.concurrent.Executor;
import javax.net.ssl.SSLEngine;
import javax.net.ssl.SSLEngineResult;
import javax.net.ssl.SSLEngineResult.HandshakeStatus;
import javax.net.ssl.SSLEngineResult.Status;
import javax.net.ssl.SSLException;
import org.eclipse.jetty.io.AbstractConnection;
import org.eclipse.jetty.io.AbstractEndPoint;
import org.eclipse.jetty.io.ByteBufferPool;
import org.eclipse.jetty.io.Connection;
import org.eclipse.jetty.io.EndPoint;
import org.eclipse.jetty.io.EofException;
import org.eclipse.jetty.io.FillInterest;
import org.eclipse.jetty.io.RuntimeIOException;
import org.eclipse.jetty.io.SelectChannelEndPoint;
import org.eclipse.jetty.io.WriteFlusher;
import org.eclipse.jetty.util.BufferUtil;
import org.eclipse.jetty.util.Callback;
import org.eclipse.jetty.util.log.Log;
import org.eclipse.jetty.util.log.Logger;
/**
* A Connection that acts as an interceptor between an EndPoint providing SSL encrypted data
* and another consumer of an EndPoint (typically an {@link Connection} like HttpConnection) that
* wants unencrypted data.
* <p>
* The connector uses an {@link EndPoint} (typically {@link SelectChannelEndPoint}) as
* it's source/sink of encrypted data. It then provides an endpoint via {@link #getDecryptedEndPoint()} to
* expose a source/sink of unencrypted data to another connection (eg HttpConnection).
* <p>
* The design of this class is based on a clear separation between the passive methods, which do not block nor schedule any
* asynchronous callbacks, and active methods that do schedule asynchronous callbacks.
* <p>
* The passive methods are {@link DecryptedEndPoint#fill(ByteBuffer)} and {@link DecryptedEndPoint#flush(ByteBuffer...)}. They make best
* effort attempts to progress the connection using only calls to the encrypted {@link EndPoint#fill(ByteBuffer)} and {@link EndPoint#flush(ByteBuffer...)}
* methods. They will never block nor schedule any readInterest or write callbacks. If a fill/flush cannot progress either because
* of network congestion or waiting for an SSL handshake message, then the fill/flush will simply return with zero bytes filled/flushed.
* Specifically, if a flush cannot proceed because it needs to receive a handshake message, then the flush will attempt to fill bytes from the
* encrypted endpoint, but if insufficient bytes are read it will NOT call {@link EndPoint#fillInterested(Callback)}.
* <p>
* It is only the active methods : {@link DecryptedEndPoint#fillInterested(Callback)} and
* {@link DecryptedEndPoint#write(Callback, ByteBuffer...)} that may schedule callbacks by calling the encrypted
* {@link EndPoint#fillInterested(Callback)} and {@link EndPoint#write(Callback, ByteBuffer...)}
* methods. For normal data handling, the decrypted fillInterest method will result in an encrypted fillInterest and a decrypted
* write will result in an encrypted write. However, due to SSL handshaking requirements, it is also possible for a decrypted fill
* to call the encrypted write and for the decrypted flush to call the encrypted fillInterested methods.
* <p>
* MOST IMPORTANTLY, the encrypted callbacks from the active methods (#onFillable() and WriteFlusher#completeWrite()) do no filling or flushing
* themselves. Instead they simple make the callbacks to the decrypted callbacks, so that the passive encrypted fill/flush will
* be called again and make another best effort attempt to progress the connection.
*
*/
public class SslConnection extends AbstractConnection
{
private static final Logger LOG = Log.getLogger(SslConnection.class);
private static final boolean DEBUG = LOG.isDebugEnabled(); // Easy for the compiler to remove the code if DEBUG==false
private static final ByteBuffer __FILL_CALLED_FLUSH= BufferUtil.allocate(0);
private static final ByteBuffer __FLUSH_CALLED_FILL= BufferUtil.allocate(0);
private final ByteBufferPool _bufferPool;
private final SSLEngine _sslEngine;
private final DecryptedEndPoint _decryptedEndPoint;
private ByteBuffer _decryptedInput;
private ByteBuffer _encryptedInput;
private ByteBuffer _encryptedOutput;
private final boolean _encryptedDirectBuffers = false;
private final boolean _decryptedDirectBuffers = false;
private final Runnable _runCompletWrite = new Runnable()
{
@Override
public void run()
{
_decryptedEndPoint.getWriteFlusher().completeWrite();
}
};
private boolean _renegotiationAllowed;
public SslConnection(ByteBufferPool byteBufferPool, Executor executor, EndPoint endPoint, SSLEngine sslEngine)
{
// This connection does not execute calls to onfillable, so they will be called by the selector thread.
// onfillable does not block and will only wakeup another thread to do the actual reading and handling.
super(endPoint, executor, !EXECUTE_ONFILLABLE);
this._bufferPool = byteBufferPool;
this._sslEngine = sslEngine;
this._decryptedEndPoint = newDecryptedEndPoint();
}
protected DecryptedEndPoint newDecryptedEndPoint()
{
return new DecryptedEndPoint();
}
public SSLEngine getSSLEngine()
{
return _sslEngine;
}
public DecryptedEndPoint getDecryptedEndPoint()
{
return _decryptedEndPoint;
}
public boolean isRenegotiationAllowed()
{
return _renegotiationAllowed;
}
public void setRenegotiationAllowed(boolean renegotiationAllowed)
{
this._renegotiationAllowed = renegotiationAllowed;
}
@Override
public void onOpen()
{
try
{
// Begin the handshake
_sslEngine.beginHandshake();
super.onOpen();
getDecryptedEndPoint().getConnection().onOpen();
}
catch (SSLException x)
{
getEndPoint().close();
throw new RuntimeIOException(x);
}
}
@Override
public void onClose()
{
_decryptedEndPoint.getConnection().onClose();
super.onClose();
}
@Override
public void close()
{
getDecryptedEndPoint().getConnection().close();
}
@Override
public void onFillable()
{
// onFillable means that there are encrypted bytes ready to be filled.
// however we do not fill them here on this callback, but instead wakeup
// the decrypted readInterest and/or writeFlusher so that they will attempt
// to do the fill and/or flush again and these calls will do the actually
// filling.
if (DEBUG)
LOG.debug("onFillable enter {}", _decryptedEndPoint);
// We have received a close handshake, close the end point to send FIN.
if (_decryptedEndPoint.isInputShutdown())
_decryptedEndPoint.close();
// wake up whoever is doing the fill or the flush so they can
// do all the filling, unwrapping, wrapping and flushing
_decryptedEndPoint.getFillInterest().fillable();
// If we are handshaking, then wake up any waiting write as well as it may have been blocked on the read
synchronized(_decryptedEndPoint)
{
if (_decryptedEndPoint._flushRequiresFillToProgress)
{
_decryptedEndPoint._flushRequiresFillToProgress = false;
getExecutor().execute(_runCompletWrite);
}
}
if (DEBUG)
LOG.debug("onFillable exit {}", _decryptedEndPoint);
}
@Override
public void onFillInterestedFailed(Throwable cause)
{
// this means that the fill interest in encrypted bytes has failed.
// However we do not handle that here on this callback, but instead wakeup
// the decrypted readInterest and/or writeFlusher so that they will attempt
// to do the fill and/or flush again and these calls will do the actually
// handle the cause.
_decryptedEndPoint.getFillInterest().onFail(cause);
boolean failFlusher = false;
synchronized(_decryptedEndPoint)
{
if (_decryptedEndPoint._flushRequiresFillToProgress)
{
_decryptedEndPoint._flushRequiresFillToProgress = false;
failFlusher = true;
}
}
if (failFlusher)
_decryptedEndPoint.getWriteFlusher().onFail(cause);
}
@Override
public String toString()
{
ByteBuffer b = _encryptedInput;
int ei=b==null?-1:b.remaining();
b = _encryptedOutput;
int eo=b==null?-1:b.remaining();
b = _decryptedInput;
int di=b==null?-1:b.remaining();
return String.format("SslConnection@%x{%s,eio=%d/%d,di=%d} -> %s",
hashCode(),
_sslEngine.getHandshakeStatus(),
ei,eo,di,
_decryptedEndPoint.getConnection());
}
public class DecryptedEndPoint extends AbstractEndPoint
{
private boolean _fillRequiresFlushToProgress;
private boolean _flushRequiresFillToProgress;
private boolean _cannotAcceptMoreAppDataToFlush;
private boolean _handshaken;
private boolean _underFlown;
private final Callback _writeCallback = new Callback()
{
@Override
public void succeeded()
{
// This means that a write of encrypted data has completed. Writes are done
// only if there is a pending writeflusher or a read needed to write
// data. In either case the appropriate callback is passed on.
boolean fillable = false;
synchronized (DecryptedEndPoint.this)
{
if (DEBUG)
LOG.debug("write.complete {}", SslConnection.this.getEndPoint());
releaseEncryptedOutputBuffer();
_cannotAcceptMoreAppDataToFlush = false;
if (_fillRequiresFlushToProgress)
{
_fillRequiresFlushToProgress = false;
fillable = true;
}
}
if (fillable)
getFillInterest().fillable();
getExecutor().execute(_runCompletWrite);
}
@Override
public void failed(final Throwable x)
{
// This means that a write of data has failed. Writes are done
// only if there is an active writeflusher or a read needed to write
// data. In either case the appropriate callback is passed on.
boolean fail_filler = false;
synchronized (DecryptedEndPoint.this)
{
if (DEBUG)
LOG.debug("{} write.failed", SslConnection.this, x);
BufferUtil.clear(_encryptedOutput);
releaseEncryptedOutputBuffer();
_cannotAcceptMoreAppDataToFlush = false;
if (_fillRequiresFlushToProgress)
{
_fillRequiresFlushToProgress = false;
fail_filler = true;
}
}
final boolean filler_failed=fail_filler;
getExecutor().execute(new Runnable()
{
@Override
public void run()
{
if (filler_failed)
getFillInterest().onFail(x);
getWriteFlusher().onFail(x);
}
});
}
};
public DecryptedEndPoint()
{
super(null,getEndPoint().getLocalAddress(), getEndPoint().getRemoteAddress());
setIdleTimeout(getEndPoint().getIdleTimeout());
}
@Override
protected FillInterest getFillInterest()
{
return super.getFillInterest();
}
@Override
public void setIdleTimeout(long idleTimeout)
{
super.setIdleTimeout(idleTimeout);
getEndPoint().setIdleTimeout(idleTimeout);
}
@Override
protected WriteFlusher getWriteFlusher()
{
return super.getWriteFlusher();
}
@Override
protected void onIncompleteFlush()
{
// This means that the decrypted endpoint write method was called and not
// all data could be wrapped. So either we need to write some encrypted data,
// OR if we are handshaking we need to read some encrypted data OR
// if neither then we should just try the flush again.
boolean flush = false;
synchronized (DecryptedEndPoint.this)
{
if (DEBUG)
LOG.debug("onIncompleteFlush {}", getEndPoint());
// If we have pending output data,
if (BufferUtil.hasContent(_encryptedOutput))
{
// write it
_cannotAcceptMoreAppDataToFlush = true;
getEndPoint().write(_writeCallback, _encryptedOutput);
}
// If we are handshaking and need to read,
else if (_sslEngine.getHandshakeStatus() == HandshakeStatus.NEED_UNWRAP)
{
// check if we are actually read blocked in order to write
_flushRequiresFillToProgress = true;
SslConnection.this.fillInterested();
}
else
{
flush = true;
}
}
if (flush)
{
// If the output is closed,
if (isOutputShutdown())
{
// don't bother writing, just notify of close
getWriteFlusher().onClose();
}
// Else,
else
{
// try to flush what is pending
getWriteFlusher().completeWrite();
}
}
}
@Override
protected boolean needsFill() throws IOException
{
// This means that the decrypted data consumer has called the fillInterested
// method on the DecryptedEndPoint, so we have to work out if there is
// decrypted data to be filled or what callbacks to setup to be told when there
// might be more encrypted data available to attempt another call to fill
synchronized (DecryptedEndPoint.this)
{
// Do we already have some app data, then app can fill now so return true
if (BufferUtil.hasContent(_decryptedInput))
return true;
// If we have no encrypted data to decrypt OR we have some, but it is not enough
if (BufferUtil.isEmpty(_encryptedInput) || _underFlown)
{
// We are not ready to read data
// Are we actually write blocked?
if (_fillRequiresFlushToProgress)
{
// we must be blocked trying to write before we can read
// Do we have data to write
if (BufferUtil.hasContent(_encryptedOutput))
{
// write it
_cannotAcceptMoreAppDataToFlush = true;
getEndPoint().write(_writeCallback, _encryptedOutput);
}
else
{
// we have already written the net data
// pretend we are readable so the wrap is done by next readable callback
_fillRequiresFlushToProgress = false;
return true;
}
}
else
{
// Normal readable callback
// Get called back on onfillable when then is more data to fill
SslConnection.this.fillInterested();
}
return false;
}
else
{
// We are ready to read data
return true;
}
}
}
@Override
public void setConnection(Connection connection)
{
if (connection instanceof AbstractConnection)
{
AbstractConnection a = (AbstractConnection)connection;
if (a.getInputBufferSize()<_sslEngine.getSession().getApplicationBufferSize())
a.setInputBufferSize(_sslEngine.getSession().getApplicationBufferSize());
}
super.setConnection(connection);
}
public SslConnection getSslConnection()
{
return SslConnection.this;
}
@Override
public synchronized int fill(ByteBuffer buffer) throws IOException
{
if (DEBUG)
LOG.debug("{} fill enter", SslConnection.this);
try
{
// Do we already have some decrypted data?
if (BufferUtil.hasContent(_decryptedInput))
return BufferUtil.flipPutFlip(_decryptedInput, buffer);
// We will need a network buffer
if (_encryptedInput == null)
_encryptedInput = _bufferPool.acquire(_sslEngine.getSession().getPacketBufferSize(), _encryptedDirectBuffers);
else
BufferUtil.compact(_encryptedInput);
// We also need an app buffer, but can use the passed buffer if it is big enough
ByteBuffer app_in;
if (BufferUtil.space(buffer) > _sslEngine.getSession().getApplicationBufferSize())
app_in = buffer;
else if (_decryptedInput == null)
app_in = _decryptedInput = _bufferPool.acquire(_sslEngine.getSession().getApplicationBufferSize(), _decryptedDirectBuffers);
else
app_in = _decryptedInput;
// loop filling and unwrapping until we have something
while (true)
{
// Let's try reading some encrypted data... even if we have some already.
int net_filled = getEndPoint().fill(_encryptedInput);
if (DEBUG)
LOG.debug("{} filled {} encrypted bytes", SslConnection.this, net_filled);
decryption: while (true)
{
// Let's unwrap even if we have no net data because in that
// case we want to fall through to the handshake handling
int pos = BufferUtil.flipToFill(app_in);
SSLEngineResult unwrapResult = _sslEngine.unwrap(_encryptedInput, app_in);
BufferUtil.flipToFlush(app_in, pos);
if (DEBUG)
LOG.debug("{} unwrap {}", SslConnection.this, unwrapResult);
HandshakeStatus handshakeStatus = _sslEngine.getHandshakeStatus();
HandshakeStatus unwrapHandshakeStatus = unwrapResult.getHandshakeStatus();
Status unwrapResultStatus = unwrapResult.getStatus();
_underFlown = unwrapResultStatus == Status.BUFFER_UNDERFLOW;
if (_underFlown)
{
if (net_filled < 0)
closeInbound();
if (net_filled <= 0)
return net_filled;
}
switch (unwrapResultStatus)
{
case CLOSED:
{
switch (handshakeStatus)
{
case NOT_HANDSHAKING:
{
// We were not handshaking, so just tell the app we are closed
return -1;
}
case NEED_TASK:
{
_sslEngine.getDelegatedTask().run();
continue;
}
case NEED_WRAP:
{
// We need to send some handshake data (probably the close handshake).
// We return -1 so that the application can drive the close by flushing
// or shutting down the output.
return -1;
}
default:
{
throw new IllegalStateException();
}
}
}
case BUFFER_UNDERFLOW:
case OK:
{
if (unwrapHandshakeStatus == HandshakeStatus.FINISHED && !_handshaken)
{
_handshaken = true;
if (DEBUG)
LOG.debug("{} {} handshake completed", SslConnection.this,
_sslEngine.getUseClientMode() ? "client-side" : "resumed session server-side");
}
// Check whether renegotiation is allowed
if (_handshaken && handshakeStatus != HandshakeStatus.NOT_HANDSHAKING && !isRenegotiationAllowed())
{
if (DEBUG)
LOG.debug("{} renegotiation denied", SslConnection.this);
closeInbound();
return -1;
}
// If bytes were produced, don't bother with the handshake status;
// pass the decrypted data to the application, which will perform
// another call to fill() or flush().
if (unwrapResult.bytesProduced() > 0)
{
if (app_in == buffer)
return unwrapResult.bytesProduced();
return BufferUtil.flipPutFlip(_decryptedInput, buffer);
}
switch (handshakeStatus)
{
case NOT_HANDSHAKING:
{
if (_underFlown)
break decryption;
continue;
}
case NEED_TASK:
{
_sslEngine.getDelegatedTask().run();
continue;
}
case NEED_WRAP:
{
// If we are called from flush()
// return to let it do the wrapping.
if (buffer == __FLUSH_CALLED_FILL)
return 0;
_fillRequiresFlushToProgress = true;
flush(__FILL_CALLED_FLUSH);
if (BufferUtil.isEmpty(_encryptedOutput))
{
// The flush wrote all the encrypted bytes so continue to fill
_fillRequiresFlushToProgress = false;
continue;
}
else
{
// The flush did not complete, return from fill()
// and let the write completion mechanism to kick in.
return 0;
}
}
case NEED_UNWRAP:
{
if (_underFlown)
break decryption;
continue;
}
default:
{
throw new IllegalStateException();
}
}
}
default:
{
throw new IllegalStateException();
}
}
}
}
}
catch (Exception e)
{
getEndPoint().close();
throw e;
}
finally
{
// If we are handshaking, then wake up any waiting write as well as it may have been blocked on the read
if (_flushRequiresFillToProgress)
{
_flushRequiresFillToProgress = false;
getExecutor().execute(_runCompletWrite);
}
if (_encryptedInput != null && !_encryptedInput.hasRemaining())
{
_bufferPool.release(_encryptedInput);
_encryptedInput = null;
}
if (_decryptedInput != null && !_decryptedInput.hasRemaining())
{
_bufferPool.release(_decryptedInput);
_decryptedInput = null;
}
if (DEBUG)
LOG.debug("{} fill exit", SslConnection.this);
}
}
private void closeInbound()
{
try
{
_sslEngine.closeInbound();
}
catch (SSLException x)
{
LOG.ignore(x);
}
}
@Override
public synchronized boolean flush(ByteBuffer... appOuts) throws IOException
{
// The contract for flush does not require that all appOuts bytes are written
// or even that any appOut bytes are written! If the connection is write block
// or busy handshaking, then zero bytes may be taken from appOuts and this method
// will return 0 (even if some handshake bytes were flushed and filled).
// it is the applications responsibility to call flush again - either in a busy loop
// or better yet by using EndPoint#write to do the flushing.
if (DEBUG)
LOG.debug("{} flush enter {}", SslConnection.this, Arrays.toString(appOuts));
int consumed=0;
try
{
if (_cannotAcceptMoreAppDataToFlush)
{
if (_sslEngine.isOutboundDone())
throw new EofException(new ClosedChannelException());
return false;
}
// We will need a network buffer
if (_encryptedOutput == null)
_encryptedOutput = _bufferPool.acquire(_sslEngine.getSession().getPacketBufferSize(), _encryptedDirectBuffers);
while (true)
{
// We call sslEngine.wrap to try to take bytes from appOut buffers and encrypt them into the _netOut buffer
BufferUtil.compact(_encryptedOutput);
int pos = BufferUtil.flipToFill(_encryptedOutput);
SSLEngineResult wrapResult = _sslEngine.wrap(appOuts, _encryptedOutput);
if (DEBUG)
LOG.debug("{} wrap {}", SslConnection.this, wrapResult);
BufferUtil.flipToFlush(_encryptedOutput, pos);
if (wrapResult.bytesConsumed()>0)
consumed+=wrapResult.bytesConsumed();
boolean allConsumed=true;
// clear empty buffers to prevent position creeping up the buffer
for (ByteBuffer b : appOuts)
{
if (BufferUtil.isEmpty(b))
BufferUtil.clear(b);
else
allConsumed=false;
}
Status wrapResultStatus = wrapResult.getStatus();
// and deal with the results returned from the sslEngineWrap
switch (wrapResultStatus)
{
case CLOSED:
// The SSL engine has close, but there may be close handshake that needs to be written
if (BufferUtil.hasContent(_encryptedOutput))
{
_cannotAcceptMoreAppDataToFlush = true;
getEndPoint().flush(_encryptedOutput);
getEndPoint().shutdownOutput();
// If we failed to flush the close handshake then we will just pretend that
// the write has progressed normally and let a subsequent call to flush
// (or WriteFlusher#onIncompleteFlushed) to finish writing the close handshake.
// The caller will find out about the close on a subsequent flush or fill.
if (BufferUtil.hasContent(_encryptedOutput))
return false;
}
// otherwise we have written, and the caller will close the underlying connection
else
{
getEndPoint().shutdownOutput();
}
return allConsumed;
case BUFFER_UNDERFLOW:
throw new IllegalStateException();
default:
if (DEBUG)
LOG.debug("{} {} {}", this, wrapResultStatus, BufferUtil.toDetailString(_encryptedOutput));
if (wrapResult.getHandshakeStatus() == HandshakeStatus.FINISHED && !_handshaken)
{
_handshaken = true;
if (DEBUG)
LOG.debug("{} {} handshake completed", SslConnection.this, "server-side");
}
HandshakeStatus handshakeStatus = _sslEngine.getHandshakeStatus();
// Check whether renegotiation is allowed
if (_handshaken && handshakeStatus != HandshakeStatus.NOT_HANDSHAKING && !isRenegotiationAllowed())
{
if (DEBUG)
LOG.debug("{} renegotiation denied", SslConnection.this);
shutdownOutput();
return allConsumed;
}
// if we have net bytes, let's try to flush them
if (BufferUtil.hasContent(_encryptedOutput))
getEndPoint().flush(_encryptedOutput);
// But we also might have more to do for the handshaking state.
switch (handshakeStatus)
{
case NOT_HANDSHAKING:
// Return with the number of bytes consumed (which may be 0)
return allConsumed && BufferUtil.isEmpty(_encryptedOutput);
case NEED_TASK:
// run the task and continue
_sslEngine.getDelegatedTask().run();
continue;
case NEED_WRAP:
// Hey we just wrapped! Oh well who knows what the sslEngine is thinking, so continue and we will wrap again
continue;
case NEED_UNWRAP:
// Ah we need to fill some data so we can write.
// So if we were not called from fill and the app is not reading anyway
if (appOuts[0]!=__FILL_CALLED_FLUSH && !getFillInterest().isInterested())
{
// Tell the onFillable method that there might be a write to complete
_flushRequiresFillToProgress = true;
fill(__FLUSH_CALLED_FILL);
// Check if after the fill() we need to wrap again
if (handshakeStatus == HandshakeStatus.NEED_WRAP)
continue;
}
return allConsumed && BufferUtil.isEmpty(_encryptedOutput);
case FINISHED:
throw new IllegalStateException();
}
}
}
}
catch (Exception e)
{
getEndPoint().close();
throw e;
}
finally
{
if (DEBUG)
LOG.debug("{} flush exit, consumed {}", SslConnection.this, consumed);
releaseEncryptedOutputBuffer();
}
}
private void releaseEncryptedOutputBuffer()
{
if (!Thread.holdsLock(DecryptedEndPoint.this))
throw new IllegalStateException();
if (_encryptedOutput != null && !_encryptedOutput.hasRemaining())
{
_bufferPool.release(_encryptedOutput);
_encryptedOutput = null;
}
}
@Override
public void shutdownOutput()
{
boolean ishut = isInputShutdown();
boolean oshut = isOutputShutdown();
if (DEBUG)
LOG.debug("{} shutdownOutput: oshut={}, ishut={}", SslConnection.this, oshut, ishut);
if (ishut)
{
// Aggressively close, since inbound close alert has already been processed
// and the TLS specification allows to close the connection directly, which
// is what most other implementations expect: a FIN rather than a TLS close
// reply. If a TLS close reply is sent, most implementations send a RST.
getEndPoint().close();
}
else if (!oshut)
{
try
{
_sslEngine.closeOutbound();
flush(BufferUtil.EMPTY_BUFFER); // Send close handshake
SslConnection.this.fillInterested(); // seek reply FIN or RST or close handshake
}
catch (Exception e)
{
LOG.ignore(e);
getEndPoint().close();
}
}
}
@Override
public boolean isOutputShutdown()
{
return _sslEngine.isOutboundDone() || getEndPoint().isOutputShutdown();
}
@Override
public void close()
{
super.close();
// First send the TLS Close Alert, then the FIN
shutdownOutput();
getEndPoint().close();
}
@Override
public boolean isOpen()
{
return getEndPoint().isOpen();
}
@Override
public Object getTransport()
{
return getEndPoint();
}
@Override
public boolean isInputShutdown()
{
return _sslEngine.isInboundDone();
}
@Override
public String toString()
{
return super.toString()+"->"+getEndPoint().toString();
}
}
}