Hello List, I placed haproxy in front of our exchange cluster for OutlookAnywhere Clients (that's just RPCoverHTTP, port 443). SSL is terminated by pound and forwards traffic on loopback to haproxy.
Everything works but it's awfully slow when i use "mode http"; requests look like this: RPC_IN_DATA /rpc/rpcproxy.dll?[...] HTTP/1.1 HTTP/1.1 200 Success..Content-Type:application/rpc..Content-Length:1073741824 RPC_OUT_DATA /rpc/rpcproxy.dll?[..] HTTP/1.1 HTTP/1.1 200 Success..Content-Type:application/rpc..Content-Length:1073741824 (this is the nature of microsoft rpc I've been told, it's using two channels to make it "duplex") and are held open in both cases (mode tcp and mode http) due to long configured timeouts (and "no option httpclose" for the http-mode) I can't see a big difference in how packets look, there's an awful lot of nearly empty packets with Syn and Push set, but that's in both cases. Packets reach 16k (that's the mtu of the loopback device) The only difference you can see in the Outlook Connection Info Window is the response-time: with mode tcp it's around 16-200ms while in http-mode it's above 800ms. Any hint? Or is mode-http of no use because I'll be unable to inject stuff into the session-cookie at all? Thx in advance Beni.
