_ChannelInboundHandler

public protocol _ChannelInboundHandler : ChannelHandler

Untyped ChannelHandler which handles inbound I/O events.

Despite the fact that channelRead is one of the methods on this protocol, you should avoid assuming that inbound events are to do with reading from channel sources. Instead, inbound events are events that originate from the channel source (e.g. the socket): that is, events that the channel source tells you about. This includes things like channelRead (there is some data to read), but it also includes things like channelWritabilityChanged (this source is no longer marked writable).

We strongly advise against implementing this protocol directly. Please implement ChannelInboundHandler.