org.eclipse.jetty.io.ssl.SslConnection Maven / Gradle / Ivy
//
// ========================================================================
// Copyright (c) 1995-2018 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.net.InetSocketAddress;
import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.Executor;
import java.util.concurrent.atomic.AtomicReference;
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 javax.net.ssl.SSLHandshakeException;
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.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;
import org.eclipse.jetty.util.thread.Invocable;
/**
* 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.
*
* The connector uses an {@link EndPoint} (typically SocketChannelEndPoint) 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).
*
* 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.
*
* 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)}.
*
* 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.
*
* 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 String TLS_1_3 = "TLSv1.3";
private enum Handshake
{
INITIAL,
SUCCEEDED,
FAILED
}
private enum FillState
{
IDLE, // Not Filling any data
INTERESTED, // We have a pending read interest
WAIT_FOR_FLUSH // Waiting for a flush to happen
}
private enum FlushState
{
IDLE, // Not flushing any data
WRITING, // We have a pending write of encrypted data
WAIT_FOR_FILL // Waiting for a fill to happen
}
private final List handshakeListeners = new ArrayList<>();
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;
private final boolean _decryptedDirectBuffers;
private boolean _renegotiationAllowed;
private int _renegotiationLimit = -1;
private boolean _closedOutbound;
private boolean _allowMissingCloseMessage = true;
private FlushState _flushState = FlushState.IDLE;
private FillState _fillState = FillState.IDLE;
private AtomicReference _handshake = new AtomicReference<>(Handshake.INITIAL);
private boolean _underflown;
private abstract class RunnableTask implements Runnable, Invocable
{
private final String _operation;
protected RunnableTask(String op)
{
_operation=op;
}
@Override
public String toString()
{
return String.format("SSL:%s:%s:%s",SslConnection.this,_operation,getInvocationType());
}
}
private final Runnable _runFillable = new RunnableTask("runFillable")
{
@Override
public void run()
{
_decryptedEndPoint.getFillInterest().fillable();
}
@Override
public InvocationType getInvocationType()
{
return getDecryptedEndPoint().getFillInterest().getCallbackInvocationType();
}
};
private final Callback _sslReadCallback = new Callback()
{
@Override
public void succeeded()
{
onFillable();
}
@Override
public void failed(final Throwable x)
{
onFillInterestedFailed(x);
}
@Override
public InvocationType getInvocationType()
{
return getDecryptedEndPoint().getFillInterest().getCallbackInvocationType();
}
@Override
public String toString()
{
return String.format("SSLC.NBReadCB@%x{%s}", SslConnection.this.hashCode(),SslConnection.this);
}
};
public SslConnection(ByteBufferPool byteBufferPool, Executor executor, EndPoint endPoint, SSLEngine sslEngine)
{
this(byteBufferPool, executor, endPoint, sslEngine, false, false);
}
public SslConnection(ByteBufferPool byteBufferPool, Executor executor, EndPoint endPoint, SSLEngine sslEngine,
boolean useDirectBuffersForEncryption, boolean useDirectBuffersForDecryption)
{
// 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);
this._bufferPool = byteBufferPool;
this._sslEngine = sslEngine;
this._decryptedEndPoint = newDecryptedEndPoint();
this._encryptedDirectBuffers = useDirectBuffersForEncryption;
this._decryptedDirectBuffers = useDirectBuffersForDecryption;
}
public void addHandshakeListener(SslHandshakeListener listener)
{
handshakeListeners.add(listener);
}
public boolean removeHandshakeListener(SslHandshakeListener listener)
{
return handshakeListeners.remove(listener);
}
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)
{
_renegotiationAllowed = renegotiationAllowed;
}
/**
* @return The number of renegotions allowed for this connection. When the limit
* is 0 renegotiation will be denied. If the limit is less than 0 then no limit is applied.
*/
public int getRenegotiationLimit()
{
return _renegotiationLimit;
}
/**
* @param renegotiationLimit The number of renegotions allowed for this connection.
* When the limit is 0 renegotiation will be denied. If the limit is less than 0 then no limit is applied.
* Default -1.
*/
public void setRenegotiationLimit(int renegotiationLimit)
{
_renegotiationLimit = renegotiationLimit;
}
public boolean isAllowMissingCloseMessage()
{
return _allowMissingCloseMessage;
}
public void setAllowMissingCloseMessage(boolean allowMissingCloseMessage)
{
this._allowMissingCloseMessage = allowMissingCloseMessage;
}
@Override
public void onOpen()
{
super.onOpen();
getDecryptedEndPoint().getConnection().onOpen();
}
@Override
public void onClose()
{
_decryptedEndPoint.getConnection().onClose();
super.onClose();
}
@Override
public void close()
{
getDecryptedEndPoint().getConnection().close();
}
@Override
public boolean onIdleExpired()
{
return getDecryptedEndPoint().getConnection().onIdleExpired();
}
@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 (LOG.isDebugEnabled())
LOG.debug(">c.onFillable {}", SslConnection.this);
// We have received a close handshake, close the end point to send FIN.
if (_decryptedEndPoint.isInputShutdown())
_decryptedEndPoint.close();
_decryptedEndPoint.onFillable();
if (LOG.isDebugEnabled())
LOG.debug("%s=>%s",
getClass().getSimpleName(),
hashCode(),
_sslEngine.getHandshakeStatus(),
ei,eo,di,
_fillState,_flushState,
_decryptedEndPoint.toEndPointString(),
connection instanceof AbstractConnection ? ((AbstractConnection)connection).toConnectionString() : connection);
}
private void releaseEncryptedOutputBuffer()
{
if (!Thread.holdsLock(_decryptedEndPoint))
throw new IllegalStateException();
if (_encryptedOutput != null && !_encryptedOutput.hasRemaining())
{
_bufferPool.release(_encryptedOutput);
_encryptedOutput = null;
}
}
public class DecryptedEndPoint extends AbstractEndPoint
{
private final Callback _incompleteWriteCallback = new IncompleteWriteCallback();
public DecryptedEndPoint()
{
// Disable idle timeout checking: no scheduler and -1 timeout for this instance.
super(null);
super.setIdleTimeout(-1);
}
@Override
public long getIdleTimeout()
{
return getEndPoint().getIdleTimeout();
}
@Override
public void setIdleTimeout(long idleTimeout)
{
getEndPoint().setIdleTimeout(idleTimeout);
}
@Override
public boolean isOpen()
{
return getEndPoint().isOpen();
}
@Override
public InetSocketAddress getLocalAddress()
{
return getEndPoint().getLocalAddress();
}
@Override
public InetSocketAddress getRemoteAddress()
{
return getEndPoint().getRemoteAddress();
}
@Override
protected WriteFlusher getWriteFlusher()
{
return super.getWriteFlusher();
}
protected void onFillable()
{
try
{
// If we are handshaking, then wake up any waiting write as well as it may have been blocked on the read
boolean waiting_for_fill;
synchronized(_decryptedEndPoint)
{
if (LOG.isDebugEnabled())
LOG.debug("onFillable {}", SslConnection.this);
_fillState = FillState.IDLE;
waiting_for_fill = _flushState==FlushState.WAIT_FOR_FILL;
}
getFillInterest().fillable();
if (waiting_for_fill)
{
synchronized(_decryptedEndPoint)
{
waiting_for_fill = _flushState==FlushState.WAIT_FOR_FILL;
}
if (waiting_for_fill)
fill(BufferUtil.EMPTY_BUFFER);
}
}
catch (Throwable e)
{
close(e);
}
}
protected void onFillableFail(Throwable failure)
{
// If we are handshaking, then wake up any waiting write as well as it may have been blocked on the read
boolean fail = false;
synchronized(_decryptedEndPoint)
{
if (LOG.isDebugEnabled())
LOG.debug("onFillableFail {}", SslConnection.this, failure);
_fillState = FillState.IDLE;
switch(_flushState)
{
case WAIT_FOR_FILL:
_flushState = FlushState.IDLE;
fail = true;
break;
default:
break;
}
}
// wake up whoever is doing the fill
getFillInterest().onFail(failure);
// Try to complete the write
if (fail)
{
if (!getWriteFlusher().onFail(failure))
close(failure);
}
}
@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 int fill(ByteBuffer buffer) throws IOException
{
try
{
synchronized(_decryptedEndPoint)
{
if (LOG.isDebugEnabled())
LOG.debug(">fill {}", SslConnection.this);
int filled = -2;
try
{
if (_fillState!=FillState.IDLE)
return filled = 0;
// Do we already have some decrypted data?
if (BufferUtil.hasContent(_decryptedInput))
return filled = BufferUtil.append(buffer,_decryptedInput);
// loop filling and unwrapping until we have something
while (true)
{
HandshakeStatus status = _sslEngine.getHandshakeStatus();
if (LOG.isDebugEnabled())
LOG.debug("fill {}", status);
switch(status)
{
case NEED_UNWRAP:
case NOT_HANDSHAKING:
break;
case NEED_TASK:
_sslEngine.getDelegatedTask().run();
continue;
case NEED_WRAP:
if (_flushState==FlushState.IDLE && flush(BufferUtil.EMPTY_BUFFER))
continue;
// handle in needsFillInterest
return filled = 0;
default:
throw new IllegalStateException("Unexpected HandshakeStatus " + status);
}
if (_encryptedInput==null)
_encryptedInput = _bufferPool.acquire(_sslEngine.getSession().getPacketBufferSize(), _encryptedDirectBuffers);
// can we use the passed buffer if it is big enough
ByteBuffer app_in;
if (_decryptedInput == null)
{
if (BufferUtil.space(buffer) > _sslEngine.getSession().getApplicationBufferSize())
app_in = buffer;
else
app_in = _decryptedInput = _bufferPool.acquire(_sslEngine.getSession().getApplicationBufferSize(), _decryptedDirectBuffers);
}
else
{
app_in = _decryptedInput;
BufferUtil.compact(_encryptedInput);
}
// Let's try reading some encrypted data... even if we have some already.
int net_filled = getEndPoint().fill(_encryptedInput);
if (LOG.isDebugEnabled())
LOG.debug("net filled={}", net_filled);
if (net_filled > 0 && _handshake.get() == Handshake.INITIAL && isOutboundDone())
throw new SSLHandshakeException("Closed during handshake");
// 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;
try
{
_underflown = false;
unwrapResult = _sslEngine.unwrap(_encryptedInput, app_in);
}
finally
{
BufferUtil.flipToFlush(app_in, pos);
}
if (LOG.isDebugEnabled())
LOG.debug("unwrap {} {} unwrapBuffer={} appBuffer={}",
net_filled,
unwrapResult.toString().replace('\n',' '),
BufferUtil.toDetailString(app_in),
BufferUtil.toDetailString(buffer));
SSLEngineResult.Status unwrap = unwrapResult.getStatus();
// Extra check on unwrapResultStatus == OK with zero bytes consumed
// or produced is due to an SSL client on Android (see bug #454773).
if (unwrap==Status.OK && unwrapResult.bytesConsumed() == 0 && unwrapResult.bytesProduced() == 0)
unwrap = Status.BUFFER_UNDERFLOW;
switch (unwrap)
{
case CLOSED:
return filled = -1;
case BUFFER_UNDERFLOW:
if (net_filled > 0)
continue; // try filling some more
_underflown = true;
if (net_filled < 0 && _sslEngine.getUseClientMode())
{
closeInbound();
return filled = -1;
}
return filled = net_filled;
case OK:
{
if (unwrapResult.getHandshakeStatus() == HandshakeStatus.FINISHED)
handshakeSucceeded();
if (isRenegotiating() && !allowRenegotiate())
return filled = -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 filled = unwrapResult.bytesProduced();
return filled = BufferUtil.append(buffer,_decryptedInput);
}
break;
}
default:
throw new IllegalStateException("Unexpected unwrap result " + unwrap);
}
}
}
catch (Throwable x)
{
handshakeFailed(x);
if (_flushState==FlushState.WAIT_FOR_FILL)
{
_flushState=FlushState.IDLE;
getExecutor().execute(()->_decryptedEndPoint.getWriteFlusher().onFail(x));
}
throw x;
}
finally
{
if (_encryptedInput != null && !_encryptedInput.hasRemaining())
{
_bufferPool.release(_encryptedInput);
_encryptedInput = null;
}
if (_decryptedInput != null && !_decryptedInput.hasRemaining())
{
_bufferPool.release(_decryptedInput);
_decryptedInput = null;
}
if (_flushState==FlushState.WAIT_FOR_FILL)
{
_flushState=FlushState.IDLE;
getExecutor().execute(()->_decryptedEndPoint.getWriteFlusher().completeWrite());
}
if (LOG.isDebugEnabled())
LOG.debug("needFillInterest uf={} {}", _underflown, SslConnection.this);
LOG.debug("ei={} di={}",BufferUtil.toDetailString(_encryptedInput),BufferUtil.toDetailString(_decryptedInput));
}
if (_fillState!=FillState.IDLE)
return;
// Fillable if we have decrypted Input OR encrypted input that has not yet been underflown.
fillable = BufferUtil.hasContent(_decryptedInput) || (BufferUtil.hasContent(_encryptedInput) && !_underflown);
HandshakeStatus status = _sslEngine.getHandshakeStatus();
switch (status)
{
case NEED_TASK:
// Pretend we are fillable
fillable = true;
break;
case NEED_UNWRAP:
case NOT_HANDSHAKING:
if (!fillable)
{
interest = true;
_fillState = FillState.INTERESTED;
}
break;
case NEED_WRAP:
if (!fillable)
{
_fillState = FillState.WAIT_FOR_FLUSH;
if (_flushState == FlushState.IDLE)
{
_flushState = FlushState.WRITING;
write = BufferUtil.hasContent(_encryptedOutput) ? _encryptedOutput : BufferUtil.EMPTY_BUFFER;
}
}
break;
default:
throw new IllegalStateException("Unexpected HandshakeStatus " + status);
}
if (LOG.isDebugEnabled())
LOG.debug("0)
_renegotiationLimit--;
}
}
private void handshakeFailed(Throwable failure)
{
if (_handshake.compareAndSet(Handshake.INITIAL, Handshake.FAILED))
{
if (LOG.isDebugEnabled())
LOG.debug("handshake failed {} {}", SslConnection.this, failure);
if (!(failure instanceof SSLHandshakeException))
failure = new SSLHandshakeException(failure.getMessage()).initCause(failure);
notifyHandshakeFailed(_sslEngine, failure);
}
}
private void terminateInput()
{
try
{
_sslEngine.closeInbound();
}
catch (Throwable x)
{
LOG.ignore(x);
}
}
private void closeInbound() throws SSLException
{
HandshakeStatus handshakeStatus = _sslEngine.getHandshakeStatus();
try
{
_sslEngine.closeInbound();
}
catch (SSLException x)
{
if (handshakeStatus == HandshakeStatus.NOT_HANDSHAKING && !isAllowMissingCloseMessage())
throw x;
else
LOG.ignore(x);
}
catch (Throwable x)
{
LOG.ignore(x);
}
}
@Override
public boolean flush(ByteBuffer... appOuts) throws IOException
{
try
{
synchronized(_decryptedEndPoint)
{
if (LOG.isDebugEnabled())
{
LOG.debug(">flush {}", SslConnection.this);
int i=0;
for (ByteBuffer b : appOuts)
LOG.debug("flush b[{}]={}", i++, BufferUtil.toDetailString(b));
}
Boolean result = null;
try
{
if (_flushState!=FlushState.IDLE)
return result = false;
// Keep going while we can make progress or until we are done
while (true)
{
HandshakeStatus status = _sslEngine.getHandshakeStatus();
if (LOG.isDebugEnabled())
LOG.debug("flush {}",status);
switch(status)
{
case NEED_WRAP:
case NOT_HANDSHAKING:
break;
case NEED_TASK:
_sslEngine.getDelegatedTask().run();
continue;
case NEED_UNWRAP:
if (_fillState==FillState.IDLE)
{
int filled = fill(BufferUtil.EMPTY_BUFFER);
if (_sslEngine.getHandshakeStatus()!=status)
continue;
if (filled < 0)
throw new IOException("Broken pipe");
}
return result = false;
default:
throw new IllegalStateException("Unexpected HandshakeStatus " + status);
}
if (_encryptedOutput == null)
_encryptedOutput = _bufferPool.acquire(_sslEngine.getSession().getPacketBufferSize(), _encryptedDirectBuffers);
// 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;
try
{
wrapResult = _sslEngine.wrap(appOuts, _encryptedOutput);
if (LOG.isDebugEnabled())
LOG.debug("wrap {} {}", wrapResult.toString().replace('\n',' '), BufferUtil.toHexSummary(_encryptedOutput));
}
finally
{
BufferUtil.flipToFlush(_encryptedOutput, pos);
}
// Was all the data consumed?
boolean allConsumed=true;
for (ByteBuffer b : appOuts)
if (BufferUtil.hasContent(b))
allConsumed=false;
// if we have net bytes, let's try to flush them
boolean flushed = true;
if (BufferUtil.hasContent(_encryptedOutput))
flushed = getEndPoint().flush(_encryptedOutput);
if (LOG.isDebugEnabled())
LOG.debug("net flushed={}, ac={}", flushed, allConsumed);
// Now deal with the results returned from the wrap
Status wrap = wrapResult.getStatus();
switch (wrap)
{
case CLOSED:
{
// TODO: do we need to remember the CLOSED state or SSLEngine
// TODO: will produce CLOSED again if wrap() is called again?
if (!flushed)
return result = false;
getEndPoint().shutdownOutput();
if (allConsumed)
return result = true;
throw new IOException("Broken pipe");
}
case BUFFER_OVERFLOW:
if (!flushed)
return result = false;
continue;
case OK:
if (wrapResult.getHandshakeStatus() == HandshakeStatus.FINISHED)
handshakeSucceeded();
if (isRenegotiating() && !allowRenegotiate())
{
getEndPoint().shutdownOutput();
if (allConsumed && BufferUtil.isEmpty(_encryptedOutput))
return result = true;
throw new IOException("Broken pipe");
}
if (!flushed)
return result = false;
if (allConsumed)
return result = true;
break;
default:
throw new IllegalStateException("Unexpected wrap result " + wrap);
}
if (getEndPoint().isOutputShutdown())
return false;
}
}
catch (Throwable x)
{
handshakeFailed(x);
throw x;
}
finally
{
releaseEncryptedOutputBuffer();
if (LOG.isDebugEnabled())
LOG.debug("onIncompleteFlush {} {}", SslConnection.this, BufferUtil.toDetailString(_encryptedOutput));
if (_flushState!=FlushState.IDLE)
return;
while(true)
{
HandshakeStatus status = _sslEngine.getHandshakeStatus();
switch(status)
{
case NEED_TASK:
case NEED_WRAP:
case NOT_HANDSHAKING:
// write what we have or an empty buffer to reschedule a call to flush
write = BufferUtil.hasContent(_encryptedOutput)?_encryptedOutput:BufferUtil.EMPTY_BUFFER;
_flushState = FlushState.WRITING;
break;
case NEED_UNWRAP:
// If we have something to write, then write it and ignore the needed unwrap for now.
if (BufferUtil.hasContent(_encryptedOutput))
{
write = _encryptedOutput;
_flushState = FlushState.WRITING;
break;
}
if (_fillState!=FillState.IDLE)
{
// Wait for a fill that is happening anyway
_flushState = FlushState.WAIT_FOR_FILL;
break;
}
// Try filling ourselves
try
{
int filled = fill(BufferUtil.EMPTY_BUFFER);
// If this changed the status, let's try again
if (_sslEngine.getHandshakeStatus()!=status)
continue;
if (filled < 0)
throw new IOException("Broken pipe");
}
catch(IOException e)
{
LOG.debug(e);
close(e);
write = BufferUtil.EMPTY_BUFFER;
_flushState = FlushState.WRITING;
break;
}
// Make sure we are fill interested.
fillInterest = true;
_fillState = FillState.INTERESTED;
_flushState = FlushState.WAIT_FOR_FILL;
break;
default:
throw new IllegalStateException("Unexpected HandshakeStatus " + status);
}
break;
}
if (LOG.isDebugEnabled())
LOG.debug("
{
if (fail_fill_interest)
_decryptedEndPoint.getFillInterest().onFail(x);
_decryptedEndPoint.getWriteFlusher().onFail(x);
});
}
@Override
public InvocationType getInvocationType()
{
return _decryptedEndPoint.getWriteFlusher().getCallbackInvocationType();
}
@Override
public String toString()
{
return String.format("SSL@%h.DEP.writeCallback",SslConnection.this);
}
}
}
}