Do not close the channel directly but mark it for closing

[violetagg]

The channel will be closed while releasing it.
The original exception that is received is Connection reset by peer,
but as a result of a direct close invocation, SSLEngine closed already
is forwarded to the user:

    at reactor.ipc.netty.http.client.HttpClientOperations.onOutboundError(HttpClientOperations.java:530)
    at reactor.ipc.netty.channel.ChannelOperations.onError(ChannelOperations.java:234)
    at reactor.core.publisher.Operators$MonoSubscriber.onError(Operators.java:1126)
    at reactor.core.publisher.MonoIgnoreThen$ThenIgnoreInner.onError(MonoIgnoreThen.java:234)
    at reactor.ipc.netty.FutureMono$FutureSubscription.operationComplete(FutureMono.java:298)
    ...
    at io.netty.handler.ssl.SslHandler.wrap(SslHandler.java:830)
    at io.netty.handler.ssl.SslHandler.wrapAndFlush(SslHandler.java:793)
    at io.netty.handler.ssl.SslHandler.flush(SslHandler.java:774)
    at io.netty.handler.ssl.SslHandler.flush(SslHandler.java:1647)
    at io.netty.handler.ssl.SslHandler.closeOutboundAndChannel(SslHandler.java:1615)
    at io.netty.handler.ssl.SslHandler.close(SslHandler.java:732)
    ...
    at io.netty.channel.AbstractChannel.close(AbstractChannel.java:238)
    at reactor.ipc.netty.channel.FluxReceive.onInboundError(FluxReceive.java:359)
    at reactor.ipc.netty.channel.ChannelOperations.onInboundError(ChannelOperations.java:429)
    at reactor.ipc.netty.channel.ChannelOperationsHandler.exceptionCaught(ChannelOperationsHandler.java:182)
    at io.netty.channel.AbstractChannelHandlerContext.invokeExceptionCaught(AbstractChannelHandlerContext.java:285)
    ...

[codecov-io]

Codecov Report

Merging #446 into 0.7.x will increase coverage by 0.39%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##             0.7.x    #446      +/-   ##
==========================================
+ Coverage     68.1%   68.5%   +0.39%     
- Complexity    1054    1060       +6     
==========================================
  Files           73      73              
  Lines         4512    4512              
  Branches       653     653              
==========================================
+ Hits          3073    3091      +18     
+ Misses        1048    1032      -16     
+ Partials       391     389       -2

Impacted Files	Coverage Δ	Complexity Δ
...in/java/reactor/ipc/netty/channel/FluxReceive.java	83.16% <100%> (ø)	66 <0> (ø)	⬇️
...or/ipc/netty/channel/ChannelOperationsHandler.java	65.93% <0%> (+1.09%)	61% <0%> (+1%)	⬆️
...java/reactor/ipc/netty/channel/ContextHandler.java	76.69% <0%> (+1.94%)	28% <0%> (+1%)	⬆️
...ctor/ipc/netty/resources/DefaultPoolResources.java	79.38% <0%> (+3.09%)	9% <0%> (+1%)	⬆️
.../ipc/netty/channel/PooledClientContextHandler.java	71.42% <0%> (+4.2%)	28% <0%> (+1%)	⬆️
...va/reactor/ipc/netty/channel/AbortedException.java	63.63% <0%> (+27.27%)	6% <0%> (+2%)	⬆️

---

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[violetagg]

Fixed with 3941fcd