Method
channelWritabilityChanged(context:)
The writability state of the Channel has changed, either because it has buffered more data than the writability high water mark, or because the amount of buffered data has dropped below the writability low water mark. You can check the state with Channel.isWritable.
func channelWritabilityChanged(context: ChannelHandlerContext)Parameters
context-
The
ChannelHandlerContextwhich thisChannelHandlerbelongs to.
Discussion
This should call context.fireChannelWritabilityChanged to forward the operation to the next _ChannelInboundHandler in the ChannelPipeline if you want to allow the next handler to also handle the event.