When connecting with a ReconnectStrategy we can only report the outcome
of the first connect to the ListenableFuture<Void> return value.
Failures for all subsequent attempts to reconnect however must be
channeled to TcpConnectHandler#afterConnectFailure which is used in
the STOMP broker relay for example to publish
BroadcastAvailability(true/false) events.
When decoding STOMP messages unread portions of a given input ByteBuf
must be kept until more input is received and the next complete STOMP
frame can be parsed.
In Reactor Net 2.x this was handled for us through the "remainder"
field in NettyChannelHandlerBridge. The Reactor Netty 0.6 upgrade
however applied only a simple map operator on the input ByteBuf
after which the buffer is relased.
This commit replaces the use of a simple map operator for decoding
and installs a ByteToMessageDecoder in the Netty channel pipeline
which has a built-in ability to preserve and merge unread input into
subsequent input buffers.
Create a ReactorNettyCodec to hold the decoding and encoding function
and consumer along with a package-private sub-class that delegates to
StompDecoder and StompEncoder.
Issue: SPR-14531
This commit polishes Kotlin nullable support by reusing
MethodParameter#isOptional() instead of adding a new
MethodParameter#isNullable() method, adds
Kotlin tests and introduces Spring Web Reactive
support.
Issue: SPR-14165
Where `isOptional` is used, also check for `isNullable` i.e.
values are not considered required if they are Kotlin nullables:
- spring-messaging: named value method arguments
- spring-web: named value method arguments
- spring-webmvc: request parts
This means that Kotlin client code no longer has to explicity specify
"required=false" for Kotlin nullables -- this information is inferred
automatically by the framework.
Issue: SPR-14165
Resetting the connection first before invoking a failure callback on
the application handler ensures that any checks to isConnected will
return false.
Issue: SPR-14721
