CODEWITHSUNDEEP
netty
Matt Friedman
Matt Friedman

Reputation: 1563

Netty Framework: When is channelOpen called?

According to the Netty guide: http://static.netty.io/3.5/guide/#start.12

To keep track of open sockets, you need to modify the TimeServerHandler to add a new open Channel to the global ChannelGroup, TimeServer.allChannels:

  @Override
  public void channelOpen(ChannelHandlerContext ctx, ChannelStateEvent e) {
        TimeServer.allChannels.add(e.getChannel());
  }

I implemented channelOpen on my business logic handler. I don't see it called when a new client makes a connection. Can anyone say in detail when channelOpen is called?

Also, can I write an upstream handler to be inserted before the ExecutionHandler and expect channelOpen to be called at the appropriate time, or does one have to implement channelOpen on the business logic handler?

I'd like to be able to implement channelOpen separately from the business logic handler if possible.

Upvotes: 1

Views: 645

Answers (1)

Norman Maurer
Norman Maurer

Reputation: 23567

The events comes in, in this order:

channelOpen(..), channelBound(..), channelConnected(..)

...

cannelDisconnected(..), channelUnbound(..), channelClosed(..)

So channelOpen(..) should be called as first thing when a client connects..

Upvotes: 3

Related Questions