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Do not issue a handshake when an SSLEngine is closing/closed

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Motivation:

We sometimes get the following exception:

javax.net.ssl.SSLException: SSLEngine is closing/closed
  at sun.security.ssl.SSLEngineImpl.kickstartHandshake(SSLEngineImpl.java:692)
  at sun.security.ssl.SSLEngineImpl.beginHandshake(SSLEngineImpl.java:734)
  at org.jboss.netty.handler.ssl.SslHandler.handshake(SslHandler.java:433)
  at org.jboss.netty.handler.ssl.SslHandler.unwrap(SslHandler.java:1233)
  at org.jboss.netty.handler.ssl.SslHandler.channelDisconnected(SslHandler.java:668)

.. which is triggered when we attempt to issue a handshake even if the
SSLEngine is closed (or being closed).

We don't really need to initiate handshake if:

- SSLEngine is closed already.
- Connection is closed already

Modifications:

Add a boolean parameter to unwrap() and unwrapNonApp() to suppress the
invocation of handshake() when SSLEngine or connection is closed
already.
This commit is contained in:
Trustin Lee 2014-08-05 11:44:15 -07:00
parent ba84e44660
commit 9efe48fc3a
1 changed files with 16 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
src/main/java/org/jboss/netty/handler/ssl/SslHandler.java
View File

@ -645,7 +645,7 @@ public class SslHandler extends FrameDecoder
try {
super.channelDisconnected(ctx, e);
} finally {
unwrapNonAppData(ctx, e.getChannel());
unwrapNonAppData(ctx, e.getChannel(), false);
closeEngine();
}
}
@ -914,7 +914,7 @@ public class SslHandler extends FrameDecoder
// See https://github.com/netty/netty/issues/1534
final ByteBuffer inNetBuf = in.toByteBuffer(in.readerIndex(), totalLength);
unwrapped = unwrap(ctx, channel, in, inNetBuf, totalLength);
unwrapped = unwrap(ctx, channel, in, inNetBuf, totalLength, true);
assert !inNetBuf.hasRemaining() || engine.isInboundDone();
}
@ -1101,7 +1101,7 @@ public class SslHandler extends FrameDecoder
}
if (needsUnwrap) {
unwrapNonAppData(ctx, channel);
unwrapNonAppData(ctx, channel, true);
}
}
@ -1191,7 +1191,7 @@ public class SslHandler extends FrameDecoder
// unwrap shouldn't be called when this method was
// called by unwrap - unwrap will keep running after
// this method returns.
unwrapNonAppData(ctx, channel);
unwrapNonAppData(ctx, channel, true);
}
break;
case NOT_HANDSHAKING:
@ -1227,8 +1227,9 @@ public class SslHandler extends FrameDecoder
/**
* Calls {@link SSLEngine#unwrap(ByteBuffer, ByteBuffer)} with an empty buffer to handle handshakes, etc.
*/
private void unwrapNonAppData(ChannelHandlerContext ctx, Channel channel) throws SSLException {
unwrap(ctx, channel, ChannelBuffers.EMPTY_BUFFER, EMPTY_BUFFER, -1);
private void unwrapNonAppData(
ChannelHandlerContext ctx, Channel channel, boolean mightNeedHandshake) throws SSLException {
unwrap(ctx, channel, ChannelBuffers.EMPTY_BUFFER, EMPTY_BUFFER, -1, mightNeedHandshake);
}
/**
@ -1237,7 +1238,7 @@ public class SslHandler extends FrameDecoder
private ChannelBuffer unwrap(
ChannelHandlerContext ctx, Channel channel,
ChannelBuffer nettyInNetBuf, ByteBuffer nioInNetBuf,
int initialNettyOutAppBufCapacity) throws SSLException {
int initialNettyOutAppBufCapacity, boolean mightNeedHandshake) throws SSLException {
final int nettyInNetBufStartOffset = nettyInNetBuf.readerIndex();
final int nioInNetBufStartOffset = nioInNetBuf.position();
@ -1250,6 +1251,7 @@ public class SslHandler extends FrameDecoder
for (;;) {
SSLEngineResult result;
boolean needsHandshake = false;
if (mightNeedHandshake) {
synchronized (handshakeLock) {
if (!handshaken && !handshaking &&
!engine.getUseClientMode() &&
@ -1257,6 +1259,7 @@ public class SslHandler extends FrameDecoder
needsHandshake = true;
}
}
}
if (needsHandshake) {
handshake();
@ -1592,7 +1595,7 @@ public class SslHandler extends FrameDecoder
boolean passthrough = true;
try {
try {
unwrapNonAppData(ctx, e.getChannel());
unwrapNonAppData(ctx, e.getChannel(), false);
} catch (SSLException ex) {
if (logger.isDebugEnabled()) {
logger.debug("Failed to unwrap before sending a close_notify message", ex);