How to do P2P

[Donald Adams]

I need to create an application that can connect from our customer (who uses
a proxy server and only allows connections out via http) to our server and
if our server has a change of information can send events back to the client
app.
Both Messenger and Skype work well in this environment.

How should I go about writing this application?
I would like to use .Net 2.0(maybe 3.0), so which objects should I use for
client and server?
What newsgroup would be best to communicate with to find answers to these
problem?

Thanks in Advance,
Donald Adams

 

[Jurjen de Groot]

Donald,

I'm not quite sure exactly what it is that you want, but maybe you could
look into the BTsharp project at http://btsharp.com/.

BTSharp is the easiest way to integrate highly scalable
peer-to-peer content distribution into your .NET application.

There's also a videocast about BTsharp on dnrTv
(http://www.dnrtv.com/default.aspx?showID=61)

Hope this helps.
Jurjen.

 

[Donald Adams]

Thanks for the info, but what I'm after is a way to send messages and I can
not go through a third party.
My basic flow might be:
1. Client app. connects to server from somewhere out there (and stays
connected)
2. Server receives a message and sends it to me.

And it will get to me regardless of whether on not I behind some proxy
server, just like Messenger and Skype.

,,,Donald

 

[Peter Duniho]

Thanks for the info, but what I'm after is a way to send messages and I
can not go through a third party.
My basic flow might be:
1. Client app. connects to server from somewhere out there (and stays
connected)
2. Server receives a message and sends it to me.

And it will get to me regardless of whether on not I behind some proxy
server, just like Messenger and Skype.

For basic needs, look at the .NET Socket or TcpClient classes. .NET 3.0
also offers the Windows Communications Framework, which I haven't used but
apparently includes additional functionality to help you.

As far as your requirement that it work whether or not you're behind a
proxy server, that will depend on the proxy server. However, these days
most proxy servers correctly deal with communications that are initiated
by a client behind that proxy server.

Pete