udprelay in netty

["Trustin Lee (이희승)"]

Hi Roland,

montanero wrote:
> I'm a netty beginner and trying to implement an application similar to
> udprelay. I am currently stuck in a very early stage of this project and
> hope one of you could hint me in the right direction. 

I hope you enjoy Netty :)

> I need to implement an udp server accepting on a single socket datagrams
> from multiple clients. Each client is identified by its remote IP address.
> For each client I need to keep some state, so I think I need to have a
> pipeline for every client, somehow related to a single NioDatagramChannel.
> For each message arriving at the channel I have to find the correct pipeline
> and forward this message to the correct pipeline, for each downstream
> message I have to send this message through the same channel.
> 
> How should I start? Should I implement a custom channel class doing the
> demultiplexing? Or is there some other way?

I am somewhat confused.  Are you going to write a server, a client, or
both?  Also, could you let me know what exactly udprelay does?  It it
something like port unification?

Thanks,
Trustin

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