rsync proxy

[Nathan Ward]

Hi all,

I'm trying to write an rsync 'proxy' of sorts. The plan is that my  
code runs on two machines (one 'client' and one 'server') and each  
piece of code executes a copy of rsync, and copies move in one  
direction (server -> client).

I have been able to run rsync on the 'server' end by calling it with -- 
server --sender and so on. On the client end I have rsync call my code  
with -e "my_code", however I am trying to make it so that on the  
'client' end, I can have my code call rsync, instead of the other way  
around.

When I call --server on the 'client' end, rsync seems to handshake OK,  
but I get buffer overflow errors:
<snip>
ERROR: buffer overflow in recv_rules [sender]
rsync error: error allocating core memory buffers (code 22) at / 
SourceCache/rsync/rsync-35.2/rsync/util.c(121) [sender=2.6.9]
</snip>

The above is sent from the 'server' to the 'client'.

Before I go delving in to the code, is --server supposed to be used in  
this way? I am basically attempting to join two rsync processes both  
running --server, but only one running --sender. There is little to no  
documentation that I could find on this!



The background here is I'm writing a backup tool and need to do a few  
more things than rsync can do alone, but there's no point replicating  
the stuff that rsync *can* do. I also don't want to use the rsync  
daemon, nor do I want to have a user account that is remotely  
accessible in order to get rsync over ssh going. Yes I know there are  
solutions for parts of this, but I want to write this tool all the same.

--
Nathan Ward