CODEWITHSUNDEEP
netty
yang yang
yang yang

Reputation: 169

the difference between channelInactive and close and disconnect in channelhandler?

what is the difference between channelInactive and close and disconnect event in channelhandler?

If I close the channel mannually, all three methods in channelhandler will be called?

If the channel closed by network errors, all three methods in channelhandler will be called?

I wonder if I just implment the channelInactive method, does all the close and disconnect event be covered too? I means is the channelInactive method superior than others?

Upvotes: 4

Views: 2568

Answers (1)

Norman Maurer
Norman Maurer

Reputation: 23557

The difference is that disconnect and close are outbound which is also why these are defined in ChannelOutboundHandler while channelInactive is inbound and thus is defined in ChannelInboundHandler.

Outbound events are events that are explicit triggered via Channel.*, ChannelHandlerContext.* methods, like for example: "I want to close the Channel". The user can then intercept these and do something, like delay closing etc.

Inbound events are triggered by the transport itself (and so the EventLoop) and usually tell you that something has happened (which may be because you requested it or the remote peer did so).

The difference between disconnect and close depend on the transport itself, for example when using TCP there is no difference while when using UDP there is one.

Upvotes: 6

Related Questions