Motivation:
`JdkZlibDecoder` is available since Netty 4.0.8 and works with JDK7+.
However, `io.netty.noJdkZlibDecoder` System prop evaluation always defaults to
true, causing Netty to always use JZLib when decompressing on the
client side when the property insn't explictly set to `false`.
Modifications:
Default to `false` instead of `true` when JDK7+.
Result:
JZLib optional as expected on JDK7+.
Motivation:
In AbstractChannelTest we not correctly mocked some methods which could lead to test errors. That said it only showed up here when running from the IDE and not from the cmdLine.
Modifications:
Mock methods that are needed for the test
Result:
Test pass in the IDE as well.
Motivation:
As we can only handle handshake commands to parse SNI we should try to skip alert and change cipher spec commands a few times before we fallback to use a default SslContext.
Modifications:
- Use default SslContext if no application data command was received
- Use default SslContext if after 4 commands we not received a handshake command
- Simplify code
- Eliminate multiple volatile fields
- Rename SslConstants to SslUtils
- Share code between SslHandler and SniHandler by moving stuff to SslUtils
Result:
Correct handling of non handshake commands and cleaner code.
Motivation:
At the moment EmbeddedChannel always handle close() and disconnect() the same way which also means that ChannelOutboundHandler.disconnect(...) will never called. We should allow to specify if these are handle different or not to make the use of EmbeddedChannel more flexible.
Modifications:
Add 2 other constructors which allow to specify if disconnect / close are handled the same way or differently.
Result:
More flexible usage of EmbeddedChannel possible.
Motivation:
We missed reporting *LE operations when AdvancedLeakAwareByteBuf was used. This could lead to incomplete access reports.
Modifications:
Correctly record access for *LE operations.
Result:
Correct leak reports.
Motivation:
AdvancedLeakAwareByteBuf.forEachByteDesc(...) called recordLeakNonRefCountingOperation() two times which resulted in incorrect leak detection reports.
Modifications:
Remove duplicated call to recordLeakNonRefCountingOperation()
Result:
Correct leak detection results
Motivation:
Android 5.0 (API version 21) has a bug which not correctly set the bytesConsumed of SSLEngineResult when HandshakeStatus is FINISHED. Because of this we need to special handle the status and so workaround the Android bug.
Modifications:
- Break the unwrap for (;;) loop when HandshakeStatus is FINISHED and bytesConsumed == 0 && bytesProduced == 0.
Result:
SslHandler works with all known version of Android.
Motivation:
InternalAttribute doesn't extend Attribute, but its equals only returns true when it compares with an Attribute. So it will return false when comparing with itself.
Modifications:
Make sure InternalAttribute return false for non InternalAttribute objects.
Result:
InternalAttribute's equals works correctly.
Motivation:
Boxing/unboxing can be avoided.
Modifications:
Use parseInt/parseLong to avoid unnecessary boxing/unboxing.
Result:
Remove unnecessary boxing/unboxing.
Motivation:
Caching is currently nested in DnsResolver.
It should also be possible to extend DnsResolver to ba able to pass a different cache on each resolution attemp.
Modifications:
* Introduce DnsCache, NoopDnsCache and DefaultDnsCache. The latter contains all the current caching logic that was extracted.
* Introduce protected versions of doResolve and doResolveAll that can be used as extension points to build resolvers that bypass the main cache and use a different one on each resolution.
Result:
Isolated caching logic. Better extensibility.
Motivation:
Parent pom.xml uses deprecated maven expressions, such as `${groupId}`
which should be ${project.groupId}.
This causes tons of warnings on every module in the build.
Modifications:
Use up to date syntax.
Result:
No more maven warnings.
Motivation:
The prefix fix of #2363 did not correctly handle the case when selectAgain is true and so missed to null out entries.
Modifications:
Move the i++ from end of loop to beginning of loop
Result:
Entries in the array will be null out so allow to have these GC'ed once the Channel close
Motivation:
* newAtomicIntegerFieldUpdater and newAtomicLongFieldUpdater take a
class<?> so they're too lax
* newAtomicReferenceFieldUpdater takes a Class<U> so it's too strict
and can only be passe a rawtype parameter when dealing w/ generic
classes
Modifications:
Take a Class<? super T> parameter instead.
Result:
Better type safety and generics support.
Motivation:
There are a few buffer leaks related to how Unpooled.wrapped and Base64.encode is used.
Modifications:
- Fix usages of Bas64.encode to correct leaks
- Clarify interface of Unpooled.wrapped* to ensure reference count ownership is clearly defined.
Result:
Reference count code is more clearly defined and less leaks are possible.
Motivation:
transport-native-epoll has its pom.xml encoding attribute set to ISO-8859-15. Because
of this gradle, and other dependency management systems, can't correctly resolve this
library from wherever it happens to be published.
Modifications:
netty/transport-native-epoll/pom.xml had its xml encoding changed to UTF-9
Result:
Gradle, and other dependency management systems, will now be able to correctly resolve this module.
Motivation:
Linux uses different socket options to set the traffic class (DSCP) on IPv6
Modifications:
Also set IPV6_TCLASS for IPv6 sockets
Result:
TrafficClass will work on IPv4 and IPv6 correctly
Motivation:
Not all fields of SctpMessage which used to check message equality are used
to generate hashcode.
Modifications:
Use value of 'unordered' field in hashCode method.
Result:
Better hash function of SctpMessage.
Motivation:
We need to ensure we only add the OpenSslEngine to the OpenSslEngineMap when the handshake is started as otherwise we may produce a memory leak when the OpenSslEngine is created but not actually used. This can for example happen if we encounter a connection refused from the remote peer. In this case we will never remove the OpenSslEngine from the OpenSslEngineMap and so it will never be collected (as we hold a reference). This has as affect that the finalizer will never be run as well.
Modifications:
- Lazy add the OpenSslEngine to the OpenSslEngineMap to elimate possible leak.
- Call OpenSslEngine.shutdown() when SslHandler is removed from the ChannelPipeline to free memory asap in all cases.
Result:
No more memory leak with OpenSslEngine if connection is refused.
Motivation:
We need to check if this handler was removed before continuing with decoding.
If it was removed, it is not safe to continue to operate on the buffer.
Modifications:
Check if decoder was removed after fire messages through the pipeline.
Result:
No illegal buffer access when decoder was removed.
Motivation:
SctpMessage.duplicate() copied message content that leads to additional buffer
allocation and memory copying.
Modifications:
Duplicate message content instead of copying it.
Result:
Better performace and less memory consumption.
Motivation:
We often used synchronized(this) while the whole method was synchronized, which can be simplified by just mark the whole method as synchronized.
Modifications:
Replace synchronized(this) with synchronized on the method
Result:
Cleaner code
Motivation:
We had to add a new profile for each OpenJDK/OracleJDK release to make
Maven choose the correct alpn-boot.jar and npn-boot.jar. As a result,
our pom.xml has a large number of `<profile/>` sections.
Modifications:
- Use jetty-alpn-agent, which chooses the correct alpn-boot.jar and
npn-boot.jar automatically to remove all the nasty profile sections
from pom.xml
- Visit https://github.com/trustin/jetty-alpn-agent for more info
Result:
Cleaner pom.xml
Motivation:
Warnings in IDE, unclean code, negligible performance impact.
Modification:
Deletion of unused imports
Result:
No more warnings in IDE, cleaner code, negligible performance improvement.
Motivation:
I missed to reset the MessageDigest before reusing it. This bug was introduced by 79634e661b.
Modifications:
Call reset() on the MessageDigest.
Result:
Correctly reset MessageDigest before re-using
Motivation:
SpdySession.StreamComparator should not be Serializable since SpdySession is not Serializable
Modifications:
Remove Serializable fom SpdySession.StreamComparator
Result:
StreamComparator is not Serializable any more
Motivation:
Typos in javadoc, in "combine" and "recommendations", IllegalReferenceCountException
Modification:
Rename incorrect reference, typos are modified
Result:
Reference is correct, typos are fixed
Motivation:
Creating a new MessageDigest every time is wasteful, we should store them in FastThreadLocal.
Modifications:
Change WebSocketUtil to store MD5 and SHA1 MessageDigest in FastThreadLocal and use these.
Result:
Less overhead and less GC.
Motivation:
- AbstractHttp2ConnectionHandlerBuilder.encoderEnforceMaxConcurrentStreams can be the primitive boolean
- SpdySession.StreamComparator should not be Serializable since SpdySession is not Serializable
Modifications:
Use boolean instead and remove Serializable
Result:
- Minor improvement for AbstractHttp2ConnectionHandlerBuilder
- StreamComparator is not Serializable any more
Motivation:
Allow passing HttpHeaders instance to DefaultHttpMessage
in order to avoid eager creation of Headers to
allow users reuse their Headers instance.
Modifications:
Added a constructor with HttpHeaders to DefaultHttpMessage,
Modified DefaultHttpResponse and DefaultHttpRequest
to receive HttpHeaders instances.
Modified DefaultFullHttpReqest and DefaultFullHttpResponse
to receive HttpHeaders, and updated `duplicate` and
`copy` to use new constructors.
Result:
Users can now pass HttpHeaders instance when
constructing Http Requests and Responses.
Motivation:
- Javadoc is not correct (#4353)
- WriteTimeoutHandler does not always cancel the timeout task (#2973)
Modifications:
Fix the javadoc and cleanup timeout task in handlerRemoved
Result:
WriteTimeoutHandler's javadoc describes the correct behavior and it will cancel timeout tasks when it's removed.
Motivation:
As we not used Unpooled anymore for allocate buffers in Base64.* methods we need to ensure we realease all the buffers.
Modifications:
Correctly release buffers
Result:
No more buffer leaks
Motivation:
OpenSslEngine now tests ALPN behavior. However it is possible that OpenSSL is present, but the version does not support ALPN. This will result in test failures instead of just skipping the test.
Modifications:
- Skip ALPN tests in OpenSslEngineTest if the version of OpenSSL does not support ALPN
Result:
Tests don't fail due to unsupported feature in OpenSSL.
Motivation:
Currently there are no tests for OpenSSL Engine,
only for JdkSSL engine.
Modifications:
Common methods from `JdkSslEngine` test moved
to `SSLEngineTest`, JdkSslEngine now implements
NPN and ALPN tests.
Result:
OpenSSL Engine is now covered with unit tests.
Motivation:
Javadoc reports errors about invalid docs.
Modifications:
Fix some errors reported by javadoc.
Result:
A lot of javadoc errors are fixed by this patch.
Motivation:
There are some wrong links and tags in javadoc.
Modifications:
Fix the wrong links and tags in javadoc.
Result:
These links will work correctly in javadoc.
Motivation:
ChunkedInput.readChunk currently takes a ChannelHandlerContext object as a parameters. All current implementations of this interface only use this object to get the ByteBufAllocator object. Thus taking a ChannelHandlerContext as a parameter is more restrictive for users of this API than necessary.
Modifications:
- Add a new method readChunk(ByteBufAllocator)
- Deprecate readChunk(ChannelHandlerContext) and updates all implementations to call readChunk(ByteBufAllocator)
Result:
API that only requires ByteBufAllocator to use ChunkedInput.
Motivation:
As a user may call deregister() from within any method while doing processing in the ChannelPipeline, we need to ensure we do the actual deregister operation later. This is needed as for example, we may be in the ByteToMessageDecoder.callDecode(...) method and so still try to do processing in the old EventLoop while the user already registered the Channel to a new EventLoop. Without delay, the deregister operation this could lead to have a handler invoked by different EventLoop and so threads.
Modifications:
Ensure the actual deregister will be done later on and not directly when invoked.
Result:
Calling deregister() within ByteToMessageDecoder.decode(..) is safe.
Motivation:
FileInputStream opened by SelfSignedCertificate wasn't closed.
Modifications:
Use a try-finally to close the opened FileInputStream.
Result:
FileInputStream will be closed properly.
Motivation:
If an user will close a Socket / FileDescriptor multiple times we should handle the extra close operations as NOOP.
Modifications:
Only do the actual closing one time
Result:
No exception if close is called multiple times.
Motivation:
Estimation algorithm currently used for WriteTasks is complicated and
wrong. Additionally, some code relies on outbound buffer size
incremented only on actual writes to the outbound buffer.
Modifications:
- Throw away the old estimator and replace with a simple algorithm that
uses the client-provided estimator along with a statically configured
WriteTask overhead (io.netty.transport.writeTaskSizeOverhead system
property with the default value of 48 bytes)
- Add a io.netty.transport.estimateSizeOnSubmit boolean system property
allowing the clients to disable the message estimation outside the
event loop
Result:
Task estimation is user controllable and produces better results by
default
Motivation:
If the stream window is negative UniformStreamByteDistributor may write data. This is prohibited by the RFC https://tools.ietf.org/html/rfc7540#section-6.9.2.
Modifications:
- UniformStreamByteDistributor should use StreamState.isWriteAllowed()
Result:
UniformStreamByteDistributor is more complaint with HTTP/2 RFC.
Fixes https://github.com/netty/netty/issues/4545
Motivation:
We missed to define the actual c function for isKeepAlive(...) and so throw UnsatisfieldLinkError.
Modifications:
- Add function
- Add unit test for Socket class
Result:
Correctly work isKeepAlive(...) when using native transport
Motivation:
RemoteFlowController.streamWritten is not currently required. We should remove it to keep interfaces minimal.
Modifications:
- Remove RemoteFlowController.streamWritten
Result:
1 Less method in RemoteFlowController interface.
Fixes https://github.com/netty/netty/issues/4600
