Example network protocol implementation

[perryh at pluto.rain.com]

"Vishal Patil" <gmail.com!bsd.devil at agora.rdrop.com> wrote:

> Could someone point me to an example that shows a SIMPLE network
> protocol implemented over TCP/IP inside the FreeBSD kernel.
> I think I could look at the NFS client driver but is there an
> example simpler than that.

NFS normally runs over UDP, not TCP.  Telnet is one of the simpler
TCP-based applications, but it is not done in the kernel (nor are
most network apps).  Is there some particular reason why you need
an example that is implemented inside the kernel, vs in userland?