I want to write my own messenger client. Where to start ?

Hi,

I think this migth be off-topic but I know that many WLM coders here in this
newsgroup.

If I want to write my own simple messenger client (not a plug-in and
ofcourse not a full function one like WLM) using my own WPF/C# skill.

Where can I got development documentation?
Is there a messenger protocol SDK ?
Is it free if I want to write a non-comercial one ?

There is nothing wrong with WLM. I just want to get more programming skill.

Please show me the way.
Wisut

Greetings,

I think we've all done the client project, for fun or to learn.

There is no [recent] documentation. The closest you're going to get is the old documentation
for the Windows [not live] Messenger API.

However, there is some third party protocol documentation:
http://msnpiki.msnfanatic.com/index.php/Main_Page
http://www.hypothetic.org/docs/msn/

And since you're using .NET, you can use the dotMSN library (although I realize this isn't
what you want, you might find it useful to look at):
http://www.xihsolutions.net/dotmsn

--
Jonathan Kay
Microsoft MVP - Windows Live Messenger/MSN Messenger/Windows Messenger
Associate Expert
http://www.microsoft.com/windowsxp/expertzone/
Messenger Resources - http://messenger.jonathankay.com
All posts unless otherwise specified are (c) 2007 Jonathan Kay.
You *must* contact me for redistribution rights.
--



"Wisut Hantanong" <> wrote in message
news:F4889C8E-F4EA-4558-9FB4-...
> Hi,
>
> I think this migth be off-topic but I know that many WLM coders here in this newsgroup.
>
> If I want to write my own simple messenger client (not a plug-in and ofcourse not a full
> function one like WLM) using my own WPF/C# skill.
>
> Where can I got development documentation?
> Is there a messenger protocol SDK ?
> Is it free if I want to write a non-comercial one ?
>
> There is nothing wrong with WLM. I just want to get more programming skill.
>
> Please show me the way.
> Wisut