Commit Graph

352 Commits

Author SHA1 Message Date
Norman Maurer
3f0085c267 Do proper bounds-checking in HpackHuffmanDecoder to reduce overhead of IndexOutOfBoundsException creation
Motivation:

HpackHuffmanDecoder.Decoder did not do any bound-checking but just catched IndexOutOfBoundsException to detect if the array needs to grow. This can be very expensive because of fillInStackTrace()

Modifications:

Add proper bounds checking and grow the array if needed without catching IndexOutOfBoundsException.

Result:

Less overhead if the array needs to grow.
2017-06-13 07:43:29 +02:00
Scott Mitchell
f00638af52 AbstractHttp2ConnectionHandlerBuilder support for HPACK huffman decoder initial size
Motivation:
Depending on the use case it may make sense to increase or decrease the initial size of the buffer used during the HPACK huffman decode process. This is currently not exposed through the AbstractHttp2ConnectionHandlerBuilder.

Modifications:
- Add a method to AbstractHttp2ConnectionHandlerBuilder which allows the initial size of the buffer used during the HPACK huffman decode prcoess to be configured.

Result:
AbstractHttp2ConnectionHandlerBuilder provides more control of codec-http2 knobs.
2017-06-12 16:36:43 -07:00
Norman Maurer
fd67a2354d [maven-release-plugin] prepare for next development iteration 2017-06-08 21:06:24 +02:00
Norman Maurer
3acd5c68ea [maven-release-plugin] prepare release netty-4.1.12.Final 2017-06-08 21:06:01 +02:00
Norman Maurer
0db2901f4d [maven-release-plugin] prepare for next development iteration 2017-05-11 16:00:55 +02:00
Norman Maurer
f7a19d330c [maven-release-plugin] prepare release netty-4.1.11.Final 2017-05-11 16:00:16 +02:00
Nikolay Fedorovskikh
94e9448ae3 Simplify JUnit assertions
Motivation:

Some JUnit assert calls can be replaced by simpler.

Modifications:

Replacement with a more suitable methods.

Result:

More informative JUnit reports.
2017-05-09 20:19:10 +02:00
Moses Nakamura
cf26227c6c Supply a builder for Http2Codec
Motivation:

DefaultHttp2FrameWriter has constructors that it would be a hassle to
expose as configuration parameters on Http2Codec. We should instead
make a builder for Http2Codec.

Modifications:

Get rid of the public constructors on Http2Codec and instead make sure
you can always use the builder where you would have used the constructor
before.

Result:

Http2Codec can be configured more flexibly, and the SensitivityDetector
can be configured.
2017-05-05 09:32:46 -07:00
Norman Maurer
6915ec3bb9 [maven-release-plugin] prepare for next development iteration 2017-04-29 14:10:00 +02:00
Norman Maurer
f30f242fee [maven-release-plugin] prepare release netty-4.1.10.Final 2017-04-29 14:09:32 +02:00
Scott Mitchell
d21f2adb98 HTTP/2 StreamByteDistributor improve parameter validation
Motivation:
Each StreamByteDistributor may allow for priority in different ways, but there are certain characteristics which are invalid regardless of the distribution algorithm. We should validate these invalid characteristics at the flow controller level.

Modifications:
- Disallow negative stream IDs from being used. These streams may be accepted by the WeightedFairQueueByteDistributor and cause state for other valid streams to be evicted.
- Improve unit tests to verify limits are enforced.

Result:
Boundary conditions related to the priority parameters are validated more strictly.
2017-04-24 17:17:18 -07:00
Eric Anderson
799350c369 Fix HTTP/2 dependency tree corruption
Motivation:

Chrome was randomly getting stuck loading the tiles examples.
Investigation showed that the Netty flow controller thought it had
nothing to send for the connection even though some streams has queued
data and window available.

Modifications:

Fixed an accounting error where an implicitly created parent was not
being added to the dependency tree, thus it and all of its children were
orphaned from the connection's tree and would never have data written.

Result:

Fixes #6621
2017-04-22 08:26:47 -07:00
Eric Anderson
c6ad9338b3 Avoid infinite loop in HTTP/2 distributor toString()
Motivation:

Although effectively unused, the toString() of
WeightedFairQueueByteDistributor.State is useful for debugging. It
accidentally had an infinite loop, as it would recurse infinitely
between a parent and its child, which makes it less useful for
debugging.

Modifications:

Prune the infinite loop by using the parent's streamId instead of the
parent's toString().

Result:

Faster, less stack-overflowing toString()
2017-04-22 08:16:41 -07:00
Nikolay Fedorovskikh
0692bf1b6a fix the typos 2017-04-20 04:56:09 +02:00
Scott Mitchell
1bc5bc69e3 HTTP/2 Allow more time for EventLoopGroup to shutdown in test that use LocalChannel
Motivation:
The CI servers have reported leaks while building the HTTP/2 unit tests. The unit tests attempt to wait for the channels to be closed before exiting the test, but we should wait in case there are any tasks pending on the EventLoopGroup's task queues.

Modifications:
- Change the Future.sync() operations to Future.syncUninterruptibly()
- HTTP/2 unit tests which use local channel should wait for 5 seconds before shutting down the EventLoopGroups

Result:
More likely that any cleanup related tasks will execute before the unit tests are shutdown.
2017-04-06 17:56:21 -07:00
Scott Mitchell
225d10e1ad HTTP/2 Make DefaultHttp2HeadersDecoder's Http2Headers object creation extensible
Motivation:
It is generally useful to override DefaultHttp2HeadersDecoder's creation of a new Http2Headers object so more optimized versions can be substituted if the use case allows for it.

Modifications:
- DefaultHttp2HeadersDecoder should support an overridable method to generate the new Http2Headers object for each decode operation

Result:
DefaultHttp2HeadersDecoder is more extensible.
Fixes https://github.com/netty/netty/issues/6591.
2017-04-03 11:19:14 -07:00
Scott Mitchell
e8da5e5162 Revert "Expose HTTP/2 HpackDecoder (#6589)"
This reverts commit f4c635d30b.
2017-04-03 11:19:09 -07:00
Scott Mitchell
36c6a61d33 HTTP/2 remove unnecessary buffer operations
Motivation:
codec-http2 has some helper methods to write to ByteBuf in a big endian fashion. This is the default memory structure for ByteBuf so these helper methods are not necessary.

Modifications:
- remove writeUnsignedInt and writeUnsignedShort

Result:
codec-http2 has less ByteBuf helper methods which are not necessary.
2017-03-31 15:23:39 -07:00
chhsiao90
0ee36fef00 Accept two ways to start HTTP/2 over clear text
Motivation:

HTTP/2 support two ways to start on a no-tls tcp connection,
http/1.1 upgrade and prior knowlege methodology to start HTTP/2.
Currently, the http2-server from example only support
starting by upgrade. I think we can do a simple dispatch by peek first
bytes from inbound that match to prior knowledge preface or not and
determine which handlers to set into pipeline.

Modifications:

Add ClearTextHttp2ServerUpgradeHandler to support start HTTP/2 via clear
text with two approach. And update example/http2-server to support
this functionality.

Result:

netty HTTP/2 and the example http2-server accept for two ways to start
HTTP/2 over clear text.

Fixed memory leak problem

Update fields to final

Rename ClearText to cleartext

Addressed comments for code improvement

- Always prefer static, final, and private if possible
- Add UnstableApi annotation
- Used EmbeddedChannel.readInbound instead of unhandled inbound handler
- More assertion

Update javadoc for CleartextHttp2ServerUpgradeHandler

Rename ClearTextHttp2ServerUpgradeHandler to CleartextHttp2ServerUpgradeHandler

Removed redundant code about configure pipeline

nit: PriorKnowledgeHandler

Removed Mockito.spy, investigate conn state instead

Add Http2UpgradeEvent

Check null of the constructor arguments

Rename Http2UpgradeEvent to PriorKnowledgeUpgradeEvent

Update unit test
2017-03-31 15:21:48 -07:00
Nathan Mittler
f4c635d30b Expose HTTP/2 HpackDecoder (#6589)
Motivation:

gRPC (and potentially other libraries) has an optimized header processor that requires direct access to the HpackDecoder.

Modifications:

Make the HpackDecoder and its constructors public.

Result:

Fixes #6579
2017-03-31 10:51:01 -07:00
Norman Maurer
40bead56c4 Revert "http2: Http2StreamChannel now shares options of its parent channel"
This reverts commit 7467106630.
2017-03-31 07:45:56 +02:00
Vladimir Kostyukov
7467106630 http2: Http2StreamChannel now shares options of its parent channel
Motivation

Http2StreamChannel ignores options of its parent channel when being created. That leads to surprising results when, for example, unpooled allocator could be silently replaced with pooled allocator (default setting).

Modification

Copy parent channel's options over to the Http2StreamChannel.

Result

Channel options are now consistent between Http2StreamChannel and its parent channel. Newly added test passes on this branch and fails on master. Fixes #6551.
2017-03-23 21:25:54 -07:00
Norman Maurer
2b8c8e0805 [maven-release-plugin] prepare for next development iteration 2017-03-10 07:46:17 +01:00
Norman Maurer
1db58ea980 [maven-release-plugin] prepare release netty-4.1.9.Final 2017-03-10 07:45:28 +01:00
Norman Maurer
e12f504ac1 Remove deprecated usage of Mockito methods
Motivation:

We used some deprecated Mockito methods.

Modifications:

- Replace deprecated method usage
- Some cleanup

Result:

No more usage of deprecated Mockito methods. Fixes [#6482].
2017-03-09 20:59:54 +01:00
Scott Mitchell
01012fc5b7 HTTP/2 SETTINGS ACK sequencing issue
Motivation:
DefaultHttp2ConnectionDecoder#onSettingsRead processes the settings, and then sends a SETTINGS ACK to the remote peer. Processing the settings may result in frames which violate the previous settings being send to the remote peer. The remote peer will not apply the new settings until it has received the SETTINGS ACK, and therefore we may violate the settings from the remote peer's perspective and the connection will be shutdown.

Modifications:
- We should send the SETTINGS ACK before we process the settings to ensure the peer receives the SETTINGS ACK before other frames which assume the settings have already been applied

Result:
Fixes https://github.com/netty/netty/issues/6520.
2017-03-09 10:21:55 -08:00
Fabian Lange
a94b23df7d Support SSL_ prefixed cipher suites in addition to TLS_ prefixed ones.
Motivation:
Http2SecurityUtil currently lists HTTP/2 ciphers as documented by
JSSE docs [1] and the IANA [2] using the TLS_ prefix.
In some IBM J9 implementations the SSL_ prefix is used, which is also
covered by the JSSE.

[1] http://docs.oracle.com/javase/8/docs/technotes/guides/security/StandardNames.html
[2] http://www.iana.org/assignments/tls-parameters/tls-parameters.xhtml

Modifications:
Add both variants of the cipher names (prefixed with SSL_ in additon to TLS_)

Result:
HTTP/2 connections can now be created using the SslProvider.JDK on IBM J9
and potentially other JVMs which use the SSL_ prefix.
2017-03-09 09:26:33 +01:00
Nikolay Fedorovskikh
2993760e92 Fix misordered 'assertEquals' arguments in tests
Motivation:

Wrong argument order in some 'assertEquals' applying.

Modifications:

Flip compared arguments.

Result:

Correct `assertEquals` usage.
2017-03-08 22:48:37 -08:00
Scott Mitchell
e18c85b768 Add missing methods to Http2ConnectionHandlerBuilder
Motivation:
A previous commit added methods to AbstractHttp2ConnectionHandlerBuilder but forgot to expose them in Http2ConnectionHandlerBuilder.

Modifications:
- expose the new methods in Http2ConnectionHandlerBuilder

Result:
Http2ConnectionHandlerBuilder supports the new configuration options.
2017-03-07 20:34:16 -08:00
Scott Mitchell
f9001b9fc0 HTTP/2 move internal HPACK classes to the http2 package
Motivation:
The internal.hpack classes are no longer exposed in our public APIs and can be made package private in the http2 package.

Modifications:
- Make the hpack classes package private in the http2 package

Result:
Less APIs exposed as public.
2017-03-02 07:42:41 -08:00
Christopher Exell
52aecabe43 Allow GOAWAY to be sent from handlers after the Http2MultiplexCodec so that app developers can shed load by issuing GOAWAY 2017-03-01 19:22:35 -08:00
Norman Maurer
7aff6b0330 Increase timeouts in Http2ConnectionRoundtripTest
Motivation:

The timeouts used in the Http2ConnectionRoundtripTest seems to be too low when leak-detection is enabled so we sometimes get failed tests due timeout.

Modifications:

Increase timeouts.

Result:

Fixes [#6442].
2017-02-24 07:58:59 +01:00
Nikolay Fedorovskikh
0623c6c533 Fix javadoc issues
Motivation:

Invalid javadoc in project

Modifications:

Fix it

Result:

More correct javadoc
2017-02-22 07:31:07 +01:00
chhsiao90
e148b53c67 Add unit test for DefaultHttp2FrameWriter
Motivation:

DefaultHttp2FrameWriter contains important logic for how http2
frame encode into binary, currently, netty had no unit test
just for DefaultHttp2FrameWriter.

Modifications:

Write DefaultHttp2FrameWriterTest to test DefaultHttp2FrameWriter

Result:

The coverage of DefaultHttp2FrameWriter is increased, and the
class was more reliable
2017-02-21 09:57:16 +01:00
chhsiao90
b1436e80ef Cleanup DefaultHttp2FrameReader about verifyUnknownFrame
Motivation:

In previous PR about handling unknwon frame in the middle of header
block, I didn't notice and re-use about checking is processing header
. And I added a redundant method for same functionality.
I think that the redundant method would lead to some misleading
situation.

Modifications:

Removed redundant code on DefaultHttp2FrameReader

Result:

The code is more readable
2017-02-20 22:12:20 -08:00
Scott Mitchell
08e0c612cf HTTP/2 Unit Test LocalChannel Leaks
Motivation:
Some unit HTTP/2 unit tests use LocalChannel. LocalChannel's doClose method will ensure any pending items in the queue will be released, but it may execute a Runnable on the peer's EventLoop to ensure the peer's queue is also cleaned up. The HTTP/2 unit tests close the event loop groups with no wait time so that unit tests will execute quickly, but if the doClose Runnable is in the EventLoop's queue it will not run and thus the items in the queue will not be released.

Modifications:
- Ensure all HTTP/2 unit tests which use LocalChannel wait for both client and server channels to be closed before closing the EventLoop.

Result:
Related to https://github.com/netty/netty/issues/5850.
2017-02-20 13:54:30 -08:00
fenik17
0cf3f54a8d Adding 'final' keyword for private fields where possible
Motivation

Missing 'final' keyword for fields

Modifications

Add 'final' for fields where possible

Result

More safe and consistent code
2017-02-14 08:29:15 +01:00
chhsiao90
72916b9960 Add unit test on DefaultHttp2FrameReader
Motivation:

DefaultHttp2FrameReader contains the logic for how it parsed the network
traffic from http2 client,
it also validate the content is legal or not.
So keep high coverage rate on it will increase the stability of api.

Modifications:

Add unit test on DefaultHttp2FrameReader

Result:

Coverage rate increased
2017-02-06 23:57:03 -08:00
Norman Maurer
a7c0ff665c Only use Mockito for mocking.
Motivation:

We used various mocking frameworks. We should only use one...

Modifications:

Make usage of mocking framework consistent by only using Mockito.

Result:

Less dependencies and more consistent mocking usage.
2017-02-07 08:47:22 +01:00
Dmitriy Dumanskiy
b9abd3c9fc Cleanup : for loops for arrays to make code easier to read and removed unnecessary toLowerCase() 2017-02-06 07:47:59 +01:00
Scott Mitchell
3482651e0c HTTP/2 Non Active Stream RFC Corrections
Motivation:
codec-http2 couples the dependency tree state with the remainder of the stream state (Http2Stream). This makes implementing constraints where stream state and dependency tree state diverge in the RFC challenging. For example the RFC recommends retaining dependency tree state after a stream transitions to closed [1]. Dependency tree state can be exchanged on streams in IDLE. In practice clients may use stream IDs for the purpose of establishing QoS classes and therefore retaining this dependency tree state can be important to client perceived performance. It is difficult to limit the total amount of state we retain when stream state and dependency tree state is combined.

Modifications:
- Remove dependency tree, priority, and weight related items from public facing Http2Connection and Http2Stream APIs. This information is optional to track and depends on the flow controller implementation.
- Move all dependency tree, priority, and weight related code from DefaultHttp2Connection to WeightedFairQueueByteDistributor. This is currently the only place which cares about priority. We can pull out the dependency tree related code in the future if it is generally useful to expose for other implementations.
- DefaultHttp2Connection should explicitly limit the number of reserved streams now that IDLE streams are no longer created.

Result:
More compliant with the HTTP/2 RFC.
Fixes https://github.com/netty/netty/issues/6206.

[1] https://tools.ietf.org/html/rfc7540#section-5.3.4
2017-02-01 10:34:27 -08:00
Scott Mitchell
6e5b25733f HTTP/2 Connection Preface User Event
Motivation:
If an HTTP/2 client writes data before the connection preface the peer will shutdown the socket. Depending on what is in the pipeline (SslHandler) may require different evaluation criteria to infer when the codec-http2 has written the connection preface on behalf of the client. This can lead to unnecessarily complexity and error prone/racy application code.

Modifications:
- Introduce a user event that is fired up the pipeline when codec-http2 writes the connection preface

Result:
Reliable mechanism for applications to use to know when connection preface has been written (related to https://github.com/netty/netty/issues/6272).
2017-02-01 10:10:42 -08:00
Carl Mastrangelo
ead9938980 Include Http 1 request in error message
Motivation:

When An HTTP server is listening in plaintext mode, it doesn't have
a chance to negotiate "h2" in the tls handshake.  HTTP 1 clients
that are not expecting an HTTP2 server will accidentally a request
that isn't an upgrade, which the HTTP/2 decoder will not
understand.  The decoder treats the bytes as hex and adds them to
the error message.

These error messages are hard to understand by humans, and result
in extra, manual work to decode.

Modification:

If the first bytes of the request are not the preface, the decoder
will now see if they are an HTTP/1 request first.  If so, the error
message will include the method and path of the original request in
the error message.

In case the path is long, the decoder will check up to the first
1024 bytes to see if it matches.  This could be a DoS vector if
tons of bad requests or other garbage come in.  A future optimization
would be to treat the first few bytes as an AsciiString and not do
any Charset decoding.  ByteBuf.toCharSequence alludes to such an
optimization.

The code has been left simple for the time being.

Result:

Faster identification of errant HTTP requests.
2017-01-30 09:46:38 -08:00
Norman Maurer
735d6dd636 [maven-release-plugin] prepare for next development iteration 2017-01-30 15:14:02 +01:00
Norman Maurer
76e22e63f3 [maven-release-plugin] prepare release netty-4.1.8.Final 2017-01-30 15:12:36 +01:00
Scott Mitchell
e13da218e9 HTTP/2 revert Http2FrameWriter throws API change
Motivation:
2fd42cfc6b fixed a bug related to encoding headers but it also introduced a throws statement onto the Http2FrameWriter methods which write headers. This throws statement makes the API more verbose and is not necessary because we can communicate the failure in the ChannelFuture that is returned by these methods.

Modifications:
- Remove throws from all Http2FrameWriter methods.

Result:
Http2FrameWriter APIs do not propagate checked exceptions.
2017-01-26 23:26:17 -08:00
chhsiao90
f4c2c1926f Fixed rfc violation about sending extension frame in the middle of headers
Motivation:

At rfc7540 5.5, it said that it's not permitted to send extension
frame in the middle of header block and need be treated as
protocol error

Modifications:

When received a extension frame, in netty it's called unknown frame,
will verify that is there an headersContinuation exists

Result:

When received a extension frame in the middle of header block,
will throw connection error and closed the connection
2017-01-26 11:25:15 -08:00
Christopher Exell
d509365974 Move location of where oversized headers that don't exceed the go away limit is done
so that the check occurs after all headers have been read
2017-01-24 15:19:46 -08:00
Christopher Exell
907726988d Update hpack Decoder CTOR to allow for overflow in maxHeaderList size, as we do when we apply our ack'ed settings
This prevents us from having the first request, that hasn't ack'ed the setting causing a GOAWAY when we'd would
be under the maxHeaderListSizeGoAway that would have been set after the settings ack.
2017-01-21 10:20:49 -08:00
Scott Mitchell
2fd42cfc6b HTTP/2 Max Header List Size Bug
Motivation:
If the HPACK Decoder detects that SETTINGS_MAX_HEADER_LIST_SIZE has been violated it aborts immediately and sends a RST_STREAM frame for what ever stream caused the issue. Because HPACK is stateful this means that the HPACK state may become out of sync between peers, and the issue won't be detected until the next headers frame. We should make a best effort to keep processing to keep the HPACK state in sync with our peer, or completely close the connection.
If the HPACK Encoder is configured to verify SETTINGS_MAX_HEADER_LIST_SIZE it checks the limit and encodes at the same time. This may result in modifying the HPACK local state but not sending the headers to the peer if SETTINGS_MAX_HEADER_LIST_SIZE is violated. This will also lead to an inconsistency in HPACK state that will be flagged at some later time.

Modifications:
- HPACK Decoder now has 2 levels of limits related to SETTINGS_MAX_HEADER_LIST_SIZE. The first will attempt to keep processing data and send a RST_STREAM after all data is processed. The second will send a GO_AWAY and close the entire connection.
- When the HPACK Encoder enforces SETTINGS_MAX_HEADER_LIST_SIZE it should not modify the HPACK state until the size has been checked.
- https://tools.ietf.org/html/rfc7540#section-6.5.2 states that the initial value of SETTINGS_MAX_HEADER_LIST_SIZE is "unlimited". We currently use 8k as a limit. We should honor the specifications default value so we don't unintentionally close a connection before the remote peer is aware of the local settings.
- Remove unnecessary object allocation in DefaultHttp2HeadersDecoder and DefaultHttp2HeadersEncoder.

Result:
Fixes https://github.com/netty/netty/issues/6209.
2017-01-19 10:42:43 -08:00