On Mon, Aug 13, 2012 at 12:51 PM, Modeel, Subin <[email protected]> wrote:
>
> Hi.
>
> I am working on a device simulator which needs a SSH support. I am attempting
> at using SSHD which I found to be a very good implementation of sshd in JAVA.
> But my adoption of SSHD needs to satisfy a scalability requirement.
>
> In my simulator each of my simulated device which is a java object has a
> channel which will register itself to the singleton selector .As such I can
> have many simulated devices each having a channel
> And all of them associated with the single selector.
> I wish to have the same architecture in SSHD.
> Selector.open();
>
> .......//multiple channels
> Channel.socket().bind(new InetSocketAddress( virtual ip, 161))
> channel.register(selector, ops, callback);
>
>
> I wish to achieve the same in SSHD+MINA. I was looking at the code and I
> found that NioSocketAcceptor.java will create a single channel as part of its
> open() method. I find the by default you cannot bind to many IPs in the
> SshServer.java
> I wish to modify SSHD and maybe even MINA for my project so that I can use
> the single instance of SSHDserver and which can service multiple channels
> associated with different IPs .
> Please let me know your inputs or if you have any other way to use existing
> code to achieve my scalability.
I think there are different notions of "channel" here.
SSH establishes a Socket connection ("channel") between two endpoints.
Within this one connection, SSH provides "logical" connections
("channels") to do different things like Secure Shell, Secure Copy
etc. (a quick google brought up
http://javaconfessions.com/2008/09/part-three-ssh-channels.html).
These SSH channels are already supported by SSHD (since they are
mandatory) and you don't need to create new sockets to use it.
HTH, I'm not a SSH expert,
Bernd
