Will Netty solve the problems i had with a similar nio implementation

["Trustin Lee (이희승)"]

Hello,

As far as I know, the existance of NAT routers don't make any problem
unless they alter the content of the packet.  The problem you are
experiencing is perhaps related with this:

    http://is.gd/aVwk4

Broadcasting a message to multiple channels is simply same with writing
the same message as many times as the number of recipients.  Since the
connection is encrypted, you will have to encrypt the same message as
many times as the number of recipients because each connection uses a
different key from each other.

Anyway, you can encrypt a connection and handle fragmented data in a
stream efficiently with Netty.  Therefore, you should be able to solve
the problem you are having.

HTH,
Trustin

lastaid wrote:
> Hey, 
> 
> at first, thank you guys for providing this framework. I've been working on
> a quite similar project for 6 month now, but hace recently discovered new
> bugs that are more and more beyond my ability to comprehend/fix.
> 
> I started writing a Server - Multi Client application in Java using NIO
> because i want keepalive connections and i dont want to either poll [
> performance ] or timeout [ latency and its just a workaround ].
> Java.NIO provided this for me but now i have mayor 2 problems:
> 
> First of all, NAT Routers dont seem to work with my protocol, furthermore,
> it doesn't even seem to be TCP/IP anymore. had to do all the packet
> stichting myself [ because of MTU fragmentation ]. Apparently the problem
> doesn't let the server resolve the individual clients if they connect from a
> network that is behind a nat router. It handles the 2 clients behind the nat
> router as one. mostly crashes because both are trying to DiffiHellman and
> are reporting broken keys.
> 
> Will the [ right ] usage of Netty work with NAT routers in the way described
> above?
> 
> The way i build the protocol makes things like announcing something via a
> broadcast to all clients very painful. Had a lot of bugs b/c of my
> implementation and thing it would be nicer/cleaner to have a tidy solution
> for this.
> 
> Will Netty allow sending broadcasts to multiple clients ? [ Especially with
> encryption enabled ]
> 
> 
> The most importent feature for me is the ability to manage mediocre numbers
> of _encryted_ connections individually and globally [ eg. broadcast ].
> Protocoll is byte based and the parsed into objects. 
> 
> I want Netty to replace my low level transmission layer. the one that
> handles encryption, crc checking, stichting and the stuff you usually expect
> from tcp/ip.
> 
> please answer, the netty project seems quite promising, but i'm confronted
> with a deadline and its probably gonna take some time to rewrite the
> transmission layer

-- 
what we call human nature in actuality is human habit
http://gleamynode.net/


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