control channel protocol?

[Klaus Malorny]

Hi,

for one project we are using the "traditional" file based approach, where we 
update the zone files and call rndc to notify Bind about the changes. At some 
point I asked myself whether we could avoid calling rndc over and over and 
instead directly communicating with Bind, even if the protocol is subject to 
change due to further development. I tried to find some information about the 
used protocol but couldn't find much (except in the source code, of course). Is 
there any (un-) official documentation?

Thanks,
Klaus