Hi Maik, On Tue, May 12, 2009 at 01:57:47AM +0200, Maik Broemme wrote: > Hi, > > I have a small question. Did someone know if it is possible to do simple > traffic multiplexing with HAProxy? Maybe I am missing it somehow, but > want to ask on the list before creating a patch for it.
what do you call "traffic multiplexing" ? From your description below, I failed to understand what it consists in. > Just to answer the real-world scenario question. TCP multiplexing can be > very useful for debugging backend servers or doing a simple logging and > passive traffic dumping. > > There are two major ideas of implementing it: > > - 1:N (Active / Passive) > - 1:N (Active / Active) > > Well active means that request is going to destination and response back > to client and passive means that only request is going to the destination. > In configuration it could look like: > > listen smtp-filter 127.0.0.1:25 > mode tcp > balance multiplex > server smtp1 10.0.0.5:25 > server smtp2 10.0.0.6:25 > > The active / active would be very hard to implement, tcp stream > synchronisation would be a pain and I think no one will really need > this, but active / passive is a very useful feature. > > In my environment it is often so, that developers need access to real > traffic data to debug (in the example above) their developed smtp > software. Is anyone else missing such functionality? :) Access to real data is solved with tcpdump or logs, I don't see what your load-balancing method will bring here. > --Maik Regards, Willy
