Commit Graph

1189 Commits

Author SHA1 Message Date
Norman Maurer
91ca3d332f
Allow to have the session tickets automatically managed by the native… (#10280)
Motivation:

BoringSSL supports to automatically manage the session tickets to be used and so also rotate them etc. This is often prefered by users as it removed some complexity. We should support to make use of this.

Modifications:

- Allow to have setSessionTickets() called without an argument or an empty array
- Add tests

Result:

Easier usage of session tickets
2020-05-14 12:09:26 +02:00
root
caf51b7284 [maven-release-plugin] prepare for next development iteration 2020-05-13 06:00:23 +00:00
root
8c5b72aaf0 [maven-release-plugin] prepare release netty-4.1.50.Final 2020-05-13 05:59:55 +00:00
Norman Maurer
71467892bf
OpenSslSession.getLocalCertificates() and getLocalPrincipal() must r… (#10275)
Motivation:

OpenSslSession.getLocalCertificates() and  getLocalPrincipal() must return null on client side if mTLS is not used as stated in the API documentation. At the moment this is not always the case

Modifications:

- Ensure we only return non-null if mTLS is used
- Add unit tests

Result:

Follow SSLSession API contract
2020-05-13 07:16:27 +02:00
Norman Maurer
cfcd7a4fde
Rename testmethods to make these more clear (#10231)
Motivation:

The currently used method names don't make a lot of sense.

Modifications:

Rename to cleanup

Result:

Cleanup
2020-04-29 17:52:43 +02:00
Aayush Atharva
9427255ffb
Specify algorithm for key pair in self signed certificate to generate EC or RSA based certificate. (#10223)
Motivation:

EC is better than RSA because of the small key size, efficient and secure which makes it perfect for testing purposes.

Modification:

Added support to specify an algorithm (EC or RSA) in constructors for key pair generation. The default key size is 256-bits as promulgated by NSA Suite B.

Result:
Able to generate a self-signed certificate of EC or RSA.
2020-04-29 16:52:07 +02:00
Norman Maurer
83012a038b
Update to latest Conscrypt release and add workarounds for bugs (#10211)
Motivation:

We are far behind with the version of Conscrypt we are using during testing. We should ensure we use the latest.

Modifications:

- Update conscrypt dependency
- Ensure we use conscrypt provider in tests
- Add workarounds for conscrypt bugs in testsuite

Result:

Use latest Conscrypt release
2020-04-28 09:50:05 +02:00
Saranya Krishnakumar
5fa5ce34e1
Add check for DefaultFileRegion to calculate size of msg in AbstractTrafficShapingHandler (#10215)
Motivation:

Currently calculateSize method in AbstractTrafficShapingHandler calculates size for object of type ByteBuf or ByteBufHolder. Adding a check for FileRegion, makes it possible to do traffic shaping for FileRegion objects as well

Modification:

Check if object to be sent is of type FileRegion, if yes calculate the size using its count() method.


Co-authored-by: Dinesh Joshi <dinesh.joshi@apple.com>
2020-04-27 13:59:01 +02:00
Norman Maurer
9778f05e14
Update testsuite / pom.xml to be able to build with Java15 (#10210)
Motivation:

We need to make some slightly changes to be able to build on Java15 as some previous deprecated methods now throw UnsupportedOperationException

Modifications:

- Add code to handle UnsupportedOperationException
- Revert previous applied workaround for bug that was fixed in Java15
- Add maven profile

Result:

Be able to build with latest Java15 EA release
2020-04-27 06:27:54 +02:00
root
9c5008b109 [maven-release-plugin] prepare for next development iteration 2020-04-22 09:57:54 +00:00
root
d0ec961cce [maven-release-plugin] prepare release netty-4.1.49.Final 2020-04-22 09:57:26 +00:00
Norman Maurer
d0c2f6e8b3
Clarify exception message when ALPN is not supported (#10155)
Motivation:

We should provide more informations when ALPN is not supported and a user tries to use it.

Modifications:

- Use UnsupportedOperationException

Result:

Easier to debug ALPN problems
2020-04-22 08:07:27 +02:00
Norman Maurer
5cd00d22d9
Ensure we support ALPN when using java 8u251 (#10196)
Motivation:

ALPN support was backported to java 8 lately. Ensure we support it if the user uses the latest java 8 release

Modifications:

- Update logic to be able to detect if ALPN is supported out of the box when using Java8
- Update jetty alpn version

Result:

Be able to use ALPN out of the box when using java 8u251
2020-04-21 15:01:59 +02:00
feijermu
1b3e1985b4
Release the channel attribute--REOPEN_TASK after removing the TrafficShapingHandler from channel pipeline. (#10177)
Motivation:

The `AbstractTrafficShapingHandler` caches the `ReopenReadTimerTask` instance in the channel attribute. However, if this handler is removed from the channel pipeline, this `ReopenReadTimerTask` instance may not be released.

Modification:

Release the channel attribute `REOPEN_TASK` in `handlerRemoved` method.

Result:

Avoid a channel attribute leak.
2020-04-15 08:52:08 +02:00
Stephane Landelle
d5e42f8553
Log protocol version during handshake (#10178)
Motivation:

Only cipher suite is logged during handshake. Picked protocol is interesting too.

Modification:

Log protocol as well.

Result:

More interesting information when debugging TLS handshakes.
2020-04-14 10:48:43 +02:00
Sérgio Santos
79ef0c4706
Allow Conscrypt to be used on Android (#10182)
**Motivation:**

Following up on https://github.com/netty/netty/issues/10181

I was able to successfully setup a Netty server with TLS on Android, using Conscrypt, with the change proposed here. Conscrypt publishes an [Android specific version](https://github.com/google/conscrypt#android). But the current availability check prevents Netty from using it (the call `PlatformDependent.javaVersion()` returns `6` on Android).

**Modification:**

Check whether the java version is above 8, or if it's running on an Android device, to flag Conscrypt as available (besides the remaining checks).

**Result:**

Netty with TLS runs fine on Android 👍
2020-04-14 10:42:51 +02:00
Norman Maurer
21f375fa90
SslHandler should fail handshake / close promise and notify pipeline on removal (#10161)
Motivation:

If the SslHandler is removed from the pipeline we also need to ensure we fail the handshake / close promise if it was not notified before as otherwise we may never do so.

Modifications:

- Correctly fail promise and notify pipeline if handshake was not done yet when the SslHandler is removed
- Add unit test

Result:

Fix https://github.com/netty/netty/issues/10158
2020-04-03 08:45:48 +02:00
Norman Maurer
db39b10249 Update link for JDK14 regression to point to the actual bugreport 2020-04-02 16:00:06 +02:00
Norman Maurer
fbc6709686
Add profile to build on JDK 14 (#10148)
Motivation:

JDK 14 was released and need some special settings to be able to build with. Also there seems to be one regression that we need to workaround for now.

Modifications:

- Add maven profile for JDK 14
- Update blockhound version to be able to work on JDK 14
- Add workaround for possible JDK 14 regression

Result:

Be able to build on JDK 14
2020-03-30 21:25:08 +02:00
Norman Maurer
62e3c463c4
Don't produce multiple calls to exceptionCaught(...) on SSL handshake failure (#10134)
Motivation:

Before release 4.1.23, there was only ONE call to exceptionCaught method when an ssl handshake failure occurs, now we have two when using the JDK provider.

Modifications:

- Ensure we only propagate one exception fi we already failed the handshake and channelInactive(...) produce an exception again
- Add unit test

Result:

Fixes https://github.com/netty/netty/issues/10119
2020-03-26 09:12:39 +01:00
root
14e4afeba2 [maven-release-plugin] prepare for next development iteration 2020-03-17 09:20:54 +00:00
root
c10c697e5b [maven-release-plugin] prepare release netty-4.1.48.Final 2020-03-17 09:18:28 +00:00
root
c623a50d19 [maven-release-plugin] prepare for next development iteration 2020-03-09 12:13:56 +00:00
root
a401b2ac92 [maven-release-plugin] prepare release netty-4.1.47.Final 2020-03-09 12:13:26 +00:00
Norman Maurer
15fa45a84b
Add log level check simply before logging. (#10080)
Motivation:

In general, we will close the debug log in a product environment. However, logging without external level check may still affect performance as varargs will need to allocate an array.

Modification:

Add log level check simply before logging.

Result:

Improve performance slightly in a product environment.
2020-03-05 14:38:57 +01:00
root
e0d73bca4d [maven-release-plugin] prepare for next development iteration 2020-02-28 06:37:33 +00:00
root
ebe7af5102 [maven-release-plugin] prepare release netty-4.1.46.Final 2020-02-28 06:36:45 +00:00
Norman Maurer
9b7e091b8d
Add SslHandshakeTimeoutException and use it for handshake timeouts (#10062)
Motivation:

Often it is useful to be able to detect different sorts of SSL errors that cause the handshake to fail. To make this easier we should throw and explicit exception type for handshake timeouts.

Modifications:

- Add SslHandshakeTimeoutException (which extends SSLHandshakeException) and use it for handshake timeouts
- Adjust testcases

Result:

Easier to detect that handshake failed because of a timeout
2020-02-27 08:57:01 +01:00
Norman Maurer
b64abd0e52
Correctly calculate the produced bytes in all cases when calling Refe… (#10063)
Motivation:

We did not correctly account for produced bytes when SSL_write(...) returns -1 in all cases. This could lead to lost data and so a corrupt SSL connection.

Modifications:

- Always ensure we calculate the produced bytes correctly
- Add unit tests

Result:

Fixes https://github.com/netty/netty/issues/10041
2020-02-27 08:49:53 +01:00
Norman Maurer
f8d5871567
Don't depend on implementation details of SSLEngine in SniHandlerTest (#10037)
Motivation:

In SniHandlerTest we depended on implementation details of the SSLEngine. We should better not doing this

Modifications:

Just release all outbound data

Result:

Dont depend on implementation details
2020-02-18 15:05:15 +01:00
Norman Maurer
d348ae9e7a
Correctly handle lifecycle of clientHello ByteBuf in SslClientHelloHandler (#10030)
Motivation:

Due incorrectly handling of reference count of the clientHello ByteBuf we may overrelease the buffer. This did show up in the log of a test:

11:55:16.595 [main] DEBUG i.n.h.ssl.SslClientHelloHandler - Unexpected client hello packet: 16030100bd010000b90303a74225676d1814ba57faff3b3663656ed05ee9dbb2a4dbb1bb1c32d2ea5fc39e0000000100008c0000001700150000164348415434e380824c45414e434c4f5544e38082434e000b000403000102000a00340032000e000d0019000b000c00180009000a00160017000800060007001400150004000500120013000100020003000f0010001100230000000d0020001e060106020603050105020503040104020403030103020303020102020203000f00010133740000
io.netty.util.IllegalReferenceCountException: refCnt: 0, decrement: 1
	at io.netty.util.internal.ReferenceCountUpdater.toLiveRealRefCnt(ReferenceCountUpdater.java:74)
	at io.netty.util.internal.ReferenceCountUpdater.release(ReferenceCountUpdater.java:138)
	at io.netty.buffer.AbstractReferenceCountedByteBuf.release(AbstractReferenceCountedByteBuf.java:100)
	at io.netty.handler.ssl.SslClientHelloHandler.releaseIfNotNull(SslClientHelloHandler.java:181)
	at io.netty.handler.ssl.SslClientHelloHandler.select(SslClientHelloHandler.java:225)
	at io.netty.handler.ssl.SslClientHelloHandler.decode(SslClientHelloHandler.java:149)
	at io.netty.handler.codec.ByteToMessageDecoder.decodeRemovalReentryProtection(ByteToMessageDecoder.java:498)
	at io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:437)
	at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:276)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:377)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:363)
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:355)
	at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:377)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:363)
	at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919)
	at io.netty.channel.embedded.EmbeddedChannel.writeInbound(EmbeddedChannel.java:343)
	at io.netty.handler.ssl.SniHandlerTest.testNonAsciiServerNameParsing(SniHandlerTest.java:297)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
	at org.junit.internal.runners.statements.ExpectException.evaluate(ExpectException.java:19)
	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
	at org.junit.runners.Suite.runChild(Suite.java:128)
	at org.junit.runners.Suite.runChild(Suite.java:27)
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
	at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
	at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
	at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
	at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
	at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)

Modifications:

Correctly transfer lifetime of buffer and so not over-release it.

Result:

Correctly handle buffer lifecycle and so not swallow the original exception
2020-02-15 17:36:40 +01:00
Norman Maurer
77effdc4da
Add SslClientHelloHandler which allows to do something based on the S… (#9827)
Motivation:

Sometimes it is useful to do something depending on the Ssl ClientHello (like for example select a SslContext to use). At the moment we only allow to hook into the SNI extension but this is not enough.

Modifications:

Add SslClientHelloHandler which allows to hook into ClientHello messages. This class is now also the super class of AbstractSniHandler

Result:

More flexible processing of SSL handshakes
2020-02-05 14:41:51 +01:00
Johno Crawford
0671b18e24
SSL / BlockHound works out of the box with the default SSL provider (#9969)
Motivation:

JDK is the default SSL provider and internally uses blocking IO operations.

Modifications:

Add allowBlockingCallsInside configuration for SslHandler runAllDelegate function.

Result:

When BlockHound is installed, SSL works out of the box with the default SSL provider.


Co-authored-by: violetagg <milesg78@gmail.com>
2020-01-30 11:35:16 +01:00
Norman Maurer
663fbaa506
SslHandler.wrap(...) must ensure it not loose the original exception when finishWrap(...) fails (#9974)
Motivation:

When SslHandler.finishWrap throws an exception, ensure that the promise and buf is not reused to avoid throwing IllegalArgumentException or IllegalReferenceCountException which causes the original exception to be lost.

Modification:

The change ensures that the values for the promise and bytebuf are nulled before calling finishWrap so that it will not be called again with the same arguments.

Result:

Fixes #9971 .

Co-authored-by: Norman Maurer <norman_maurer@apple.com>

Co-authored-by: Antony T Curtis <atcurtis@gmail.com>
2020-01-29 08:46:38 +01:00
bergerst
384eaf773c Set keystoreType for JdkSslClientContext Keystores (#9965)
Motivation:

In the PR #9003, the issue #8998 was supposedly solved. But actually the fix only made it so the TrustManager can use the specified keystore type instead of also supporting it in the KeyManagerFactory.

In my environment, we are using PKCS#11 Keys which are then rejected by the PKCS#12 keystore. A PKCS#12 keystore is created since the keystoreType was set to null by the code from the mentioned PR.

Modification:

Do not ignore the keystoreType parameter during the creation of the JdkSslClientContext KeyManagerFactory.

Result:

Fixes #8998.
2020-01-28 14:44:13 +01:00
Bennett Lynch
a7de4747d0 Add ByteBufFormat option to LoggingHandler (#9915)
Motivation

LoggingHandler is a very useful tool for debugging and for tracking the
sequence of events in a pipeline. LoggingHandler also includes the
functionality to log a hex dump of all written and received ByteBufs.
This can be useful for small messages, but for large messages, this can
potentially result in extremely large logs. E.g., a 1 MB payload will
result in over a 1 MB log message being recorded. While LoggingHandler
may only be intended for debugging, this can still be too excessive in
some debugging scenarios.

Modifications

* Create a new ByteBufFormat enum that allows users to specify "SIMPLE"
or "HEX_DUMP" logging for ByteBufs.
* For all constructors that currently accept a LogLevel parameter,
create new overloaded constructors that also accept this enum as a
parameter.
* Continue to record hex dumps by default.

Result

Users will be able to opt out of full hex dump recording, if they wish
to.
2020-01-23 16:50:28 -08:00
Norman Maurer
de3b3678d7
Reduce allocations in ChunkedWriteHandler when processing the queued … (#9960)
Motivation:

At the moment we create a new ChannelFutureListener per chunk when trying to write these to the underlying transport. This can be optimized by replacing the seperate write and flush call with writeAndFlush and only allocate the listener if the future is not complete yet.

Modifications:

- Replace seperate write and flush calls with writeAndFlush
- Only create listener if needed, otherwise execute directly

Result:

Less allocations
2020-01-21 15:34:29 -08:00
Norman Maurer
69cd042401
Remove extra field from ChunkedWriteHandler to make it less error-prone (#9958)
Motivation:

At the moment we use an extra field in ChunedWriteHandler to hold the current write. This is not needed and makes sense even more error-prone. We can just peek in the queue.

Modifications:

Use Queue.peek() to keep track of current write

Result:

Less error-prone code
2020-01-21 07:44:04 -08:00
Norman Maurer
34e3ea9ee8
Add ResolveAddressHandler which can be used to resolve addresses on the fly (#9947)
Motivation:

At the moment resolving addresses during connect is done via setting an AddressResolverGroup on the Bootstrap. While this works most of the times as expected sometimes the user want to trigger the connect() from the Channel itself and not via the Bootstrap. For this cases we should provide a ChannelHandler that the user can use that will do the resolution.

Modifications:

Add ResolveAddressHandler and tests

Result:

Be able to resolve addresses without Bootstrap
2020-01-20 19:26:13 +01:00
root
9b1ea10a12 [maven-release-plugin] prepare for next development iteration 2020-01-13 09:13:53 +00:00
root
136db8680a [maven-release-plugin] prepare release netty-4.1.45.Final 2020-01-13 09:13:30 +00:00
Norman Maurer
ac69c877f1
Fix SniHandlerTest when jdkCompatibilityMode is false (#9934)
Motivation:

41c47b4 introduced a change in an existing testcase which let the build fail when jdkCompatibilityMode is false.

Modifications:

Fix unit tests

Result:

Build passes when jdkCompatibilityMode is false as well
2020-01-10 10:14:12 +01:00
Nick Hill
41c47b41bf Fix event loop hang in SniHandler (#9933)
Motivation

A bug was introduced in #9806 which looks likely to be the cause of
#9919. SniHandler will enter an infinite loop if an SSL record is
received with SSL major version byte != 3 (i.e. something other than TLS
or SSL3.0)

Modifications

- Follow default path as intended  for majorVersion != 3 in
AbstractSniHandler#decode(...)
- Add unit test to reproduce the hang

Result

Fixes #9919
2020-01-10 08:49:09 +01:00
时无两丶
2be3d888e7 FlushConsolidationHandler may suppress flushes by mistake (#9931)
Motivation:

When `consolidatedWhenNoReadInProgress` is true, `channel.writeAndFlush (data) .addListener (f-> channel.writeAndFlush (data2))` Will cause data2 to never be flushed. 

Because the flush operation will synchronously execute the `channel.writeAndFlush (data2))` in the `listener`, and at this time, since the current execution thread is still an `eventloop`(`executor.inEventLoop()` was true), all handlers will be executed synchronously. At this time, since `nextScheduledFlush` is still not null, the `flush` operation of `data2` will be ignored in `FlushConsolidationHandler#scheduleFlush`.

Modification:

 - reset `nextScheduledFlush` before `ctx.flush`
 - use `ObjectUtil` to polish code

Result:

Fixes https://github.com/netty/netty/issues/9923
2020-01-09 14:51:12 +01:00
root
79d4e74019 [maven-release-plugin] prepare for next development iteration 2019-12-18 08:32:54 +00:00
root
5ddf45a2d5 [maven-release-plugin] prepare release netty-4.1.44.Final 2019-12-18 08:31:43 +00:00
时无两丶
0cde4d9cb4 Uniform null pointer check. (#9840)
Motivation:
Uniform null pointer check.

Modifications:

Use ObjectUtil.checkNonNull(...)

Result:
Less code, same result.
2019-12-09 09:47:35 +01:00
Norman Maurer
9ba13f0afc
Correctly handle fragmented Handshake message when trying to detect SNI (#9806)
Motivation:

At the moment our AbstractSniHandler makes the assemption that Handshake messages are not fragmented. This is incorrect as it is completely valid to split these across multiple TLSPlaintext records.

Thanks to @sskrobotov for bringing this to my attentation and to @Lukasa for the help.

Modifications:

- Adjust logic in AbstractSniHandler to handle fragmentation
- Add unit tests

Result:

Correctly handle fragmented Handshake message in AbstractSniHandler (and so SniHandler).
2019-11-29 09:17:43 +01:00
ZhenLian
6e3d784a2c Support Passing KeyManager and TrustManager into SslContextBuilder (#9805) (#9786)
Motivation:

This is a PR to solve the problem described here: https://github.com/netty/netty/issues/9767
Basically this PR is to add two more APIs in SslContextBuilder, for users to directly specify
the KeyManager or TrustManager they want to use when building SslContext. This is very helpful
when users want to pass in some customized implementation of KeyManager or TrustManager.

Modification:

This PR takes the first approach in here:
https://github.com/netty/netty/issues/9767#issuecomment-551927994 (comment)
which is to immediately convert the managers into factories and let factories continue to pass
through Netty.

1. Add in SslContextBuilder the two APIs mentioned above
2. Create a KeyManagerFactoryWrapper and a TrustManagerFactoryWrapper, which take a KeyManager
and a TrustManager respectively. These are two simple wrappers that do the conversion from
XXXManager class to XXXManagerFactory class
3.Create a SimpleKeyManagerFactory class(and internally X509KeyManagerWrapper for compatibility),
which hides the unnecessary details such as KeyManagerFactorySpi. This serves the similar
functionalities with SimpleTrustManagerFactory, which was already inside Netty.

Result:

Easier usage.
2019-11-26 14:25:13 +01:00
stroller
920fab6e33 Improve java doc for MINIMAL_WAIT (#9779)
Motivation:

MINIMAL_WAIT is the key constant. Thus, When we see the constant, we must read more code logic to see if it is ms or ns. So improving java doc will be better.

Modifications:
Improve java doc by add "10ms" such as DEFAULT_CHECK_INTERVAL with "1s".

Result:

Easy to know it is ms and keep same java doc style with other constants such as DEFAULT_CHECK_INTERVAL.
2019-11-17 08:35:24 -08:00