Motivation:
It will be easier to support websockets in server application by using WebSocketServerProtocolHandshakeHandler class and not reinvent its functionality. But currently it handles all http requests as if they were websocket handshake requests.
Modifications:
Check if http request path is equals to adjusted websocket path.
Fixed example of websocket server implementation.
Result:
WebSocketServerProtocolHandshakeHandler handles only websocket handshake requests.
Motivation:
If the input buffer is empty we should not have decodeLast(...) call decode(...) as the user may not expect this.
Modifications:
- Not call decode(...) in decodeLast(...) if the input buffer is empty.
- Add testcases.
Result:
decodeLast(...) will not call decode(...) if input buffer is empty.
Modifications:
When constructing the FullHttpMessage pass in the ByteBuf to use via the ByteBufAllocator assigned via the context.
Result:
The ByteBuf assigned to the FullHttpMessage can now be configured as a pooled/unpooled, direct/heap based ByteBuf via the ByteBufAllocator used.
Motivation:
See #4855
Modifications:
Unfortunately, unescapeCsv cannot be used here because the input could be a CSV line like `"a,b",c`. Hence this patch adds unescapeCsvFields to parse a CSV line and split it into multiple fields and unescaped them. The unit tests should define the behavior of unescapeCsvFields.
Then this patch just uses unescapeCsvFields to implement `CombinedHttpHeaders.getAll`.
Result:
`CombinedHttpHeaders.getAll` will return the unescaped values of a header.
Motivation:
b714297a44 introduced ChannelInputShutdownEvent support for HttpObjectDecoder. However this should have been added to the super class ByteToMessageDecoder, and ByteToMessageDecoder should not propegate a channelInactive event through the pipeline in this case.
Modifications:
- Move the ChannelInputShutdownEvent handling from HttpObjectDecoder to ByteToMessageDecoder
- ByteToMessageDecoder doesn't call ctx.fireChannelInactive() on ChannelInputShutdownEvent
Result:
Half closed events are treated more generically, and don't get translated into a channelInactive pipeline event.
Motivation:
The initial buffer size used to decode HTTP objects is currently fixed at 128. This may be too small for some use cases and create a high amount of overhead associated with resizing/copying. The user should be able to configure the initial size as they please.
Modifications:
- Make HttpObjectDecoder's AppendableCharSequence initial size configurable
Result:
Users can more finely tune initial buffer size for increased performance or to save memory.
Fixes https://github.com/netty/netty/issues/4807
Motivation:
"CorsConfigBuilder.allowNullOrigin()" should be public otherwise people can not set it. See #4835
Modifications:
Make "CorsConfigBuilder.allowNullOrigin()" public.
Result:
The user can call "CorsConfigBuilder.allowNullOrigin()" now.
Motivation:
If the Connection header contains multiple values (which is valid) we fail to detect a websocket upgrade
Modification:
- Add new method which allows to check if a header field contains a specific value (and also respect multiple header values)
- Use this method to detect handshake
Result:
Correct detect handshake if Connection header contains multiple values (seperated by ',').
Motivation:
If the ZlibCodecFactory can support using a custom window size we should support it by default in the websocket extensions as well.
Modifications:
Detect if a custom window size can be handled by the ZlibCodecFactory and if so enable it by default for PerMessageDeflate*ExtensionHandshaker.
Result:
Support window size flag by default in most installations.
Motivation:
If the user calls handshake.finishHandshake() we need to ensure that the user has the chance to setup the pipeline before any WebSocketFrames are read. Because of this we need
to delay the removal of the HttpRequestDecoder.
Modifications:
- Remove the HttpRequestDecoder via the EventLoop and so delay it which gives the user a chance to setup the pipeline after finishHandshake() completes
- Add unit test for this.
Result:
Less surpising and correct behaviour even if the http response and websocket frame are received in one read operation.
Motivation:
Request bodies can easily be larger than Integer.MAX_VALUE in practice.
There's no reason, or intention, for Netty to impose this artificial constraint.
Worse, it currently does not fail if the body is larger than this value;
it just silently only reads the first Integer.MAX_VALUE bytes and discards the rest.
This restriction doesn't effect chunked transfers, with no Content-Length header.
Modifications:
Force the use of `long HttpUtil.getContentLength(HttpMessage, long)` instead of
`long HttpUtil.getContentLength(HttpMessage, long)`.
Result:
Netty will support HTTP request bodies of up to Long.MAX_VALUE length.
Motivation:
When HttpClientUpgradeHandler upgrades from HTTP/1 to another protocol,
it performs a two-step opertion:
1. Remove the SourceCodec (HttpClientCodec)
2. Add the UpgradeCodec
When HttpClientCodec is removed from the pipeline, the decoder being
removed triggers channelRead() event with the data left in its
cumulation buffer. However, this is not received by the UpgradeCodec
becuase it's not added yet. e.g. HTTP/2 SETTINGS frame sent by the
server can be missed out.
To fix the problem, we need to reverse the steps:
1. Add the UpgradeCodec
2. Remove the SourceCodec
However, this does not work as expected either, because UpgradeCodec can
send a greeting message such as HTTP/2 Preface. Such a greeting message
will be handled by the SourceCodec and will trigger an 'unsupported
message type' exception.
To fix the problem really, we need to make the upgrade process 3-step:
1. Remove/disable the encoder of SourceCodec
2. Add the UpgradeCodec
3. Remove the SourceCodec
Modifications:
- Add SourceCodec.prepareUpgradeFrom() so that SourceCodec can remove or
disable its encoder
- Implement HttpClientCodec.prepareUpgradeFrom() properly
- Miscellaneous:
- Log the related channel as well When logging the failure to send a
GOAWAY
Result:
Cleartext HTTP/1-to-HTTP/2 upgrade works again.
Motivation:
See #3411. A reusable ArrayList in InternalThreadLocalMap can avoid allocations in the following pattern:
```
List<...> list = new ArrayList<...>();
add something to list but never use InternalThreadLocalMap
return list.toArray(new ...[list.size()]);
```
Modifications:
Add a reusable ArrayList to InternalThreadLocalMap and update codes to use it.
Result:
Reuse a thread local ArrayList to avoid allocations.
Motivation:
WebSocketClientCompressionHandler is stateless so it should be @Sharable.
Modifications:
Add @Sharable annotation to WebSocketClientCompressionHandler, make constructor private and add static field to get the instance.
Result:
Less object creation.
Motivation:
I am use netty as a http server, it fail to decode some POST request when the request absent Content-Type in the multipart/form-data body.
Modifications:
Set content_type with default application/octet-stream to parse the uploaded file data when the Content-Type is absent in multipart request body
Result:
Can decode the http request as normal.
Motivation:
ChannelInboundHandler and ChannelOutboundHandler both can implement exceptionCaught(...) method and so we need to dispatch to both of them.
Modifications:
- Correctly first dispatch exceptionCaught to the ChannelInboundHandler but also make sure the next handler it will be dispatched to will be the ChannelOutboundHandler
- Add removeInboundHandler() and removeOutboundHandler() which allows to remove one of the combined handlers
- Let *Codec extends it and not ChannelHandlerAppender
- Remove ChannelHandlerAppender
Result:
Correctly handle events and also have same behavior as in 4.0
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:
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:
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:
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:
HttpHeaderValues.IDENTITY is an AsciiString, but was compared using equals to a String.
Modifications:
Use contentEquals instead.
Result:
Correct comparison.
Motivation:
We have websocket extension support (with compression) in old master. We should port this to 4.1
Modifications:
Backport relevant code.
Result:
websocket extension support (with compression) is now in 4.1.
Motivation:
Consistency in API design
Modifications:
- Deprecate CorsConfig.Builder and its factory methods
- Deprecate CorsConfig.DateValueGenerator
- Add CorsConfigBuilder and its factory methods
- Fix typo (curcuit -> circuit)
Result:
Consistency with other builder APIs such as SslContextBuilder and
Http2ConnectionHandlerBuilder
Motivation:
If a uri contains whitespaces we need to ensure we correctly escape these when creating the request for the handshake.
Modifications:
- Correctly encode path for uri
- Add tests
Result:
Correctly handle whitespaces when doing websocket upgrade requests.
Motivation:
HttpClientUpgradeHandler uses HttpHeaderNames.UPGRADE as the value of
the 'Connection' header, which is incorrect. It should use
HttpHeaderValues.UPGRADE instead (note Names vs Values.)
Also, HttpHeaderValues.UPGRADE should be 'upgrade' rather than
'Upgrade', as defined in:
- https://tools.ietf.org/html/rfc7230#section-6.7
Modifications:
- Use HttpHeaderValues.UPGRADE for a 'Connection' header
- Lowercase the value of HttpHeaderValues.UPGRADE
Result:
- Fixes#4508
- Correct behavior
Motivation:
On a successful protocol upgrade in HTTP, HttpClientUpgradeHandler calls
HttpClientCodec.upgradeFrom(), which removed both the HTTP encoder and
decoder from the pipeline immediately.
However, because the decoder is in the middle of the decode loop,
removing it from the pipeline immediately will cause the cumulation
buffer to be released prematurely.
This often leads to an IllegalReferenceCountException or missing first
response after the upgrade response.
Modifications:
- Remove the decoder *after* the decode loop is done
Result:
Fixes#4504
Motivation:
HttpClientUpgradeHandler currently throws an IllegalStateException when
the server sends a '101 Switching Protocols' response that has no
'Upgrade' header.
Some servers do not send the 'Upgrade' header on a successful protocol
upgrade and we could safely assume that the server accepted the
requested protocol upgrade in such a case, looking from the response
status code (101)
Modifications:
- Do not throw an IllegalStateException when the server responded 101
without a 'Upgrade' header
- Note that we still check the equality of the 'Upgrade' header when it
is present.
Result:
- Fixes#4523
- Better interoperability
Motivation:
- On the client, cookies should be sorted in decreasing order of path
length. From RFC 6265:
5.4.2. The user agent SHOULD sort the cookie-list in the following
order:
* Cookies with longer paths are listed before cookies with
shorter paths.
* Among cookies that have equal-length path fields, cookies with
earlier creation-times are listed before cookies with later
creation-times.
NOTE: Not all user agents sort the cookie-list in this order, but
this order reflects common practice when this document was
written, and, historically, there have been servers that
(erroneously) depended on this order.
Note that the RFC does not define the path length of cookies without a
path. We sort pathless cookies before cookies with the longest path,
since pathless cookies inherit the request path (and setting a path
that is longer than the request path is of limited use, since it cannot
be read from the context in which it is written).
- On the server, if there are multiple cookies of the same name, only one
of them should be encoded. RFC 6265 says:
Servers SHOULD NOT include more than one Set-Cookie header field in
the same response with the same cookie-name.
Note that the RFC does not define which cookie should be set in the case
of multiple cookies with the same name; we arbitrarily pick the last one.
Modifications:
- Changed the visibility of the 'strict' field to 'protected' in
CookieEncoder.
- Modified ClientCookieEncoder to sort cookies in decreasing order of path
length when in strict mode.
- Modified ServerCookieEncoder to return only the last cookie of a given
name when in strict mode.
- Added a fast path for both strict mode in both client and server code
for cases with only one cookie, in order avoid the overhead of sorting
and memory allocation.
- Added unit tests for the new cases.
Result:
- Cookie generation on client and server is now more conformant to RFC 6265.
Motivation:
HttpHeaders already has specific methods for such popular and simple headers like "Host", but if I need to convert POST raw body to string I need to parse complex ContentType header in my code.
Modifications:
Add getCharset and getCharsetAsString methods to parse charset from Content-Length header.
Result:
Easy to use utility method.
