* We should be able to use the ByteBuffer cleaner on java8 (and earlier versions) even if sun.misc.Unsafe is not present.
Motivation:
At the moment we have a hard dependency on sun.misc.Unsafe to use the Cleaner on Java8 and earlier. This is not really needed as we can still use pure reflection if sun.misc.Unsafe is not present.
Modifications:
Refactor Cleaner6 to fallback to pure reflection if sun.misc.Unsafe is not present on system.
Result:
More timely releasing of direct memory on Java8 and earlier when sun.misc.Unsafe is not present.
Motivation:
f77891cc17 changed slightly how we detect if we should prefer direct buffers or not but did miss to also take this into account when logging.
Modifications:
Fix branch for log message to reflect changes in f77891cc17.
Result:
Correct logging.
Motivation:
We should ensure we call *UnLoad when we detect an error during calling *OnLoad and previous *OnLoad calls were succesfull.
Modifications:
Correctly call *UnLoad when needed.
Result:
More correct code and no leaks when an error happens during loading the native lib.
Motivation:
We should log a bit more details about why we shutdown the SSL.
Modifications:
Add the return value of SSL_get_error(...) as well in debug mode.
Result:
More logging to make it easier to understand why an SSL error happened.
Motivation:
There was a race condition between the task submitter and task executor threads such that the last Runnable submitted may not get executed.
Modifications:
The bug was fixed by checking the task queue and state in the task executor thread after it saw the task queue was empty.
Result:
Fixes#8230
* Allow to use native transports when sun.misc.Unsafe is not present on the system
Motivation:
We should be able to use the native transports (epoll / kqueue) even when sun.misc.Unsafe is not present on the system. This is especially important as Java11 will be released soon and does not allow access to it by default.
Modifications:
- Correctly disable usage of sun.misc.Unsafe when -PnoUnsafe is used while running the build
- Correctly increment metric when UnpooledDirectByteBuf is allocated. This was uncovered once -PnoUnsafe usage was fixed.
- Implement fallbacks in all our native transport code for when sun.misc.Unsafe is not present.
Result:
Fixes https://github.com/netty/netty/issues/8229.
Motivation
Ensure classes of cipher suites continue working between releases. Adding just a DHE check for now as it caused #8165 but this test can be expaned to other suites.
Modifications
Adding an unit test that checks for the presence of a cipher suite.
Result
Prevent #8165 from happening in the future.
Motivation:
We should prefer direct buffers whenever we can use the cleaner even if sun.misc.Unsafe is not present.
Modifications:
Correctly prefer direct buffers in all cases.
Result:
More correct code.
Motivation:
CleanerJava9 currently fails whever a SecurityManager is installed. We should make use of AccessController.doPrivileged(...) so the user can give it the correct rights.
Modifications:
Use doPrivileged(...) when needed.
Result:
Fixes https://github.com/netty/netty/issues/8201.
Motivation:
Recycler may produce a NPE when the same object is recycled multiple times from different threads.
Modifications:
- Check if the id has changed or if the Stack became null and if so throw an IllegalStateException
- Add unit test
Result:
Fixes https://github.com/netty/netty/issues/8220.
Motivation:
It seems to sometimes confuse people what to do to replace setMaxMessagePerRead(...).
Modifications:
Add some more details to the javadocs about the correct replacement.
Result:
Related to https://github.com/netty/netty/issues/8214.
Motivation:
We should ensure we use the latest Java11 EA during build to catch any regressions etc.
Modifications:
Update from ea19 to ea28.
Result:
Use latest Java11 release.
Motivation:
We should support to parse and read a hosts file which is stored in a different encoding then the system default. Beside this when we are on windows we should just try to parse it with multiple different charset before giving up as there is no real standard what charset to use.
Modifications:
- Add more method overloads to HostsFileParser that take a Charset.
- Try to parse with multiple Charsets in DefaultHostsFileEntriesResolver when windows is used.
- Add unit test
Result:
Fixes https://github.com/netty/netty/issues/8208.
* Try to monkey-patch library id when shading is used and we are on MacOS / OSX.
Motivation:
ea4c315b45 did ensure we support using multiple versions of the same shaded native library but the user still needed to run install_name_tool -id on MacOS to ensure the ID is unique.
This is kind of error prone and also means that the shading itself would need to be done on MacOS / OSX.
This is related to https://github.com/netty/netty/issues/7272.
Modifications:
- Monkey patch the shaded native lib on MacOS to ensure the id is unique while unpacking it to the tempory location.
Result:
Easier way of using shaded native libs in netty.
Motiviation:
We incorrectly did ignore NS servers during redirect which had no ADDITIONAL record. This could at worse have the affect that we failed the query completely as none of the NS servers had a ADDITIONAL record. Beside this using a DnsCache to cache authoritative nameservers does not work in practise as we we need different features and semantics when cache these servers (for example we also want to cache unresolved nameservers and resolve these on the fly when needed).
Modifications:
- Correctly take NS records into account that have no matching ADDITIONAL record
- Correctly handle multiple ADDITIONAL records for the same NS record
- Introduce AuthoritativeDnsServerCache as a replacement of the DnsCache when caching authoritative nameservers + adding default implementation
- Add an adapter layer to reduce API breakage as much as possible
- Replace DnsNameResolver.uncachedRedirectDnsServerStream(...) with newRedirectDnsServerStream(...)
- Add unit tests
Result:
Our DnsResolver now correctly handle redirects in all cases.
Motivation:
We should support to load multiple shaded versions of the same netty artifact as netty is often used in multiple dependencies.
This is related to https://github.com/netty/netty/issues/7272.
Modifications:
- Use -fvisibility=hidden when compiling and use JNIEXPORT for things we really want to have exported
- Ensure fields are declared as static so these are not exported
- Adjust testsuite-shading to use install_name_tool on MacOS to change the id of the lib. Otherwise the wrong may be used.
Result:
Be able to use multiple shaded versions of the same netty artifact.
Motivation:
Java9 and later does the safepoint polling by itself so there is not need for us to do it.
Modifications:
Check for java version before doing manual safepoint polling.
Result:
Less custom code and less overhead when using java9 and later. Fixes https://github.com/netty/netty/issues/8122.
Motivation:
OpenSSL itself has an abstraction which allows you to customize some things. For example it is possible to load the PrivateKey from the engine. We should support this.
Modifications:
Add two new static methods to OpenSslX509KeyManagerFactory which allow to create an OpenSslX509KeyManagerFactory that loads its PrivateKey via the OpenSSL Engine directly.
Result:
More flexible usage of OpenSSL possible
Motivation:
In OpenSslCertificateException we should ensure we try to load netty-tcnative before trying to use any class from it as otherwise it may throw an error due missing linking of the native libs.
Modifications:
- Ensure we call OpenSsl.isAvailable() before we try to use netty-tcnative for validation
- Add testcase.
Result:
No more errors causing by not loading native libs before trying to use these.
* Rename SslHandler.close(...) to closeOutbound(...) as it is still useful and delegate to the methods.
Motivation:
Sometimes the user may want to send a close_notify without closing the underlying Channel. For this we offered the SslHandler.close(...) methods which were marked as deeprecated. We should offer an way to still do this without the user calling deprecated methods.
See https://stackoverflow.com/questions/51710231/using-nettys-sslhandlerclosechannelhandlercontext-channelpromise/51753742#comment90555949_51753742 .
Modifications:
- Remove deprecation of the SslHandler.close(...) method that exactly allows this and rename these to closeOutbound(...) as this is more clear.
- Add close(...) methods that delegate to these and mark these as deprecated.
Result:
Be able to send close_notify without closing the Channel.
Motivation:
We are currently always remove all entries from the cache for a hostname if the lowest TTL was reached but schedule one for each of the cached entries. This is wasteful.
Modifications:
- Reimplement logic to schedule TTL to only schedule a new removal task if the requested TTL was actual lower then the one for the already scheduled task.
- Ensure we only remove from the internal map if we did not replace the Entries in the meantime.
Result:
Less overhead in terms of scheduled tasks for the DefaultDnsCache
Motivation:
We had a report that the exception may not be correctly propagated. This test shows it is.
Modifications:
Add testcase.
Result:
Test for https://github.com/netty/netty/issues/8158
Motivation:
We should ensure we return the same cached entries for the hostname and hostname ending with dot. Beside this we also should use it for the searchdomains as well.
Modifications:
- Internally always use hostname with a dot as a key and so ensure we correctly handle it in the cache.
- Also query the cache for each searchdomain
- Add unit tests
Result:
Use the same cached entries for hostname with and without trailing dot. Query the cache for each searchdomain query as well
Motivation:
55fec94592 fixed a bug where we did not correctly clear all caches when the resolver was closed but did not add a testcase.
Modifications:
Add testcase.
Result:
More tests.
Motivation:
When using the JDK SSL provider in client mode, the SNI host names (called serverNames in SslEngineImpl) is set to the peerHost (if available) that is used to initialize the SSL Engine:
http://hg.openjdk.java.net/jdk8/jdk8/jdk/file/687fd7c7986d/src/share/classes/sun/security/ssl/SSLEngineImpl.java#l377
This allows one to call SslEngine.getSSLParameters() and inspect what is the SNI name to be sent. The same should be done in the OpenSSL provider as well. Currently even though the the SNI name is sent by the OpenSSL provider during handshake when the peerHost is specified, it is missing from the parameters.
Modification:
Set the sniHostNames field when SNI is to be used. Also verifies the peer is actually a hostname before setting it as the SNI name, which is consistent with JDK SSL provider's behavior.
Result:
SslEngine using the OpenSSL provider created in client mode with peerHost will initialize sniHostNames with the peerHost.
Calling SslEngine.getSSLParameters().getServerNames() will return a list that contains that name.
Motivation:
There is a JDK bug which will return IP_TOS as supported option for ServerSocketChannel even if its not supported afterwards and cause an AssertionError.
See http://mail.openjdk.java.net/pipermail/nio-dev/2018-August/005365.html.
Modifications:
Add a workaround for the JDK bug.
Result:
ServerSocketChannel.config().getOptions() will not throw anymore and work as expected.
Motivation:
DnsNameResolver manages search domains and will retry the request with the different search domains provided to it. However if the query results in an invalid hostname, the Future corresponding to the resolve request will never be completed.
Modifications:
- If a resolve attempt results in an invalid hostname and the query isn't issued we should fail the associated promise
Result:
No more hang from DnsNameResolver if search domain results in invalid hostname.
In nioBuffer(int,int) in CompositeByteBuf , we create a sub-array of nioBuffers for the components that are in range, then concatenate all the components in range into a single bigger buffer.
However, if the call to nioBuffers() returned only one sub-buffer, then we are copying it to a newly-allocated buffer "merged" for no reason.
Motivation:
Profiler for Spark shows a lot of time spent in put() method inside nioBuffer(), while usually no copy of data is required.
Modification:
This change skips this last step and just returns a duplicate of the single buffer returned by the call to nioBuffers(), which will in most implementation not copy the data
Result:
No copy when the source is only 1 buffer
Motivation:
At the moment we only clear the resolveCache when the Channel is closed. We should also do the same for the authoritativeDnsServerCache.
Modifications:
Add authoritativeDnsServerCache.clear() to the Channel closeFuture.
Result:
Correctly clear all caches.
Motivation:
952eeb8e1e introduced the possibility to use any JDK SocketOption when using the NIO transport but broke the possibility to use netty with java6.
Modifications:
Do not use java7 types in method signatures of the static methods in NioChannelOption to prevent class-loader issues on java6.
Result:
Fixes https://github.com/netty/netty/issues/8166.
Motivation:
We missed to do a null check before trying to destroy the OpenSslSessionContext, which could lead to a NPE.
Modifications:
Add null check and tests.
Result:
Fix https://github.com/netty/netty/issues/8170.
Motivation:
Temporary disable test that wwas introduced as part of f60d08fd32 as it sometimes fail on the CI. We need to figure out why it fails there (can not reproduce so far even on the CI after ssh into it).
Modifications:
Ignore test.
Result:
More stable builds until we figure out the flackyness.
Motivation:
In some of our tests we not correctly init the SSLEngine before trying to perform a handshake which can cause an IllegalStateException. While this not happened in previous java releases it does now on Java11 (which is "ok" as its even mentioned in the api docs). Beside this how we selected the ciphersuite to test renegotation was not 100 % safe.
Modifications:
- Correctly init SSLEngine before using it
- Correctly select ciphersuite before testing for renegotation.
Result:
More correct tests and also pass on next java11 EA release.
Motivation:
Avoid unnecessary native memory allocation if UDP / TCP isn't being
used.
Modifications:
Create the reused NativeDatagramPacketArray and IovArray upon first use
instead of EpollEventLoop construction.
Also correct related comment in NativeDatagramPacketArray.
Result:
Reduced native memory use when using epoll in many cases
Motivation:
d67d639f5f added a test for shading the native transport of netty. We should also test that shading netty-tcnative is possible.
Modifications:
Add test for shading netty-tcnative
Result:
More testing.
Motivation:
Http2MultiplexCodec queues data internally if data is delivered from the
parent channel but the child channel did not request data. If the parent
channel notifies of a stream closure it is possible data in the queue
will be discarded before closing the channel.
Http2MultiplexCodec interacts with RecvByteBufAllocator to control the
child channel's demand for read. However it currently only ever reads a
maximum of one time per loop. This can thrash the read loop and bloat
the call stack if auto read is on, because channelReadComplete will
re-enter the read loop synchronously, and also neglect to deliver data
during the parent's read loop (if it is active). This also meant the
readPendingQueue was not utilized as originally intended (to extend the
child channel's read loop during the parent channel's read loop if
demand for data still existed).
Modifications:
- Modify the child channel's read loop to respect the
RecvByteBufAllocator, and append to the parents readPendingQueue if
appropriate.
- Stream closure notification behaves like EPOLL and KQUEUE transports
and reads all queued data, because the data is already queued in memory
and it is known there will be no more data. This will also replenish the
connection flow control window which may otherwise be constrained by a
closed stream.
Result:
More correct read loop and less risk of dropping data.
Motivation:
We should allow to also validate sni hostname which contains for example underscore when using our native SSL impl. The JDK implementation does this as well.
Modifications:
- Construct the SNIHostName via byte[] and not String.
- Add unit test
Result:
Fixes https://github.com/netty/netty/issues/8144.
Motivation:
We need to add special handling for WrappedCompositeByteBuf as these also extend AbstractByteBuf, otherwise we will not correctly adjust / read the writerIndex during processing.
Modifications:
- Add instanceof checks for WrappedCompositeByteBuf as well.
- Add testcases
Result:
Fixes https://github.com/netty/netty/issues/8152.
Motivation:
We do not correctly check for previous calles of setUncancellable() in getNow() which may result in ClassCastException as we incorrectly return the internally UNCANCELLABLE object and not null if setUncancellable() we as called before.
Modifications:
Correctly check for UNCANCELLABLE and add unit test.
Result:
Fixes https://github.com/netty/netty/issues/8135.
* Support the usage of SocketOption when nio is used and the java version >= 7.
Motivation:
The JDK uses SocketOption since java7 to support configuration options on the underyling Channel. We should allow to create a ChannelOption from a given SocketOption if nio is used. This also allows us to expose the same featureset in terms of configuration as the java nio implementation does without any extra effort.
Modifications:
- Add NioChannelOption which allows to wrap an existing SocketOption which then can be applied to the nio transport.
- Add test-cases
Result:
Support the same configuration options as the JDK. Also fixes https://github.com/netty/netty/issues/8072.
Motivation:
It's easy to break the support for shading native libs as shown in https://github.com/netty/netty/issues/8090. We should have some testing to ensure all works as expected.
Modification:
Add new testsuite which verifies that shading our native transports work as expected.
Result:
Include test to verify shading of native code.
