Unsubscribing an SSE stream does not close the underlying connection

[g9yuayon]

When an observable of an ServerSentEvent from a request is subscribed, the underly connection is not closed. As a result, the server that serves the SSE streams will continue sending events. The server will also throw an exception if it finishes sending all the events:

Unexpected error in RxNetty. Error: Connection reset by peer
java.io.IOException: Connection reset by peer
    at sun.nio.ch.FileDispatcherImpl.read0(Native Method)
    at sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:39)
    at sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:223)
    at sun.nio.ch.IOUtil.read(IOUtil.java:192)
    at sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:379)
    at io.netty.buffer.PooledUnsafeDirectByteBuf.setBytes(PooledUnsafeDirectByteBuf.java:311)
    at io.netty.buffer.AbstractByteBuf.writeBytes(AbstractByteBuf.java:871)
    at io.netty.channel.socket.nio.NioSocketChannel.doReadBytes(NioSocketChannel.java:208)
    at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:118)
    at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:485)
    at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:452)
    at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:346)
    at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:101)
    at java.lang.Thread.run(Thread.java:744)

[NiteshKant]

I chatted with @g9yuayon offline and this seems to be only happening if the content subscription and HttpClientResponse subscriptions are not connected, eg: via response.flatmap()

This as expected, we manage the "liveness" of a response & the underlying connection via the response observable.

Closing the issue now.