DX - Load Balancing & Application Acceleration
DX - Load Balancing & Application Acceleration

Outlook 2007 problems?

‎02-05-2009 07:40 AM

Is anyone out there using the dx for outlook 2007 owa?

 

 

The OWA piece works fine as a cluster, but microsofts RPC over HTTPS(Outlook anywhere) fails.

 

It appears that the DX considers the RPC_IN_DATA and RPC_OUT_DATA methods to be illegal http methods. I have tried adding a request sentry app rule to forward any requests with these methods but it appears that the DX does some filtering before the RS app processing.

 

 

JTAC has recommended using a  SLB group instead, but I had hoped to take advantage of the ssl and http acceleration of the DX

 

 

 

Does anyone have a work-around or a solution to this problem?

 

 

Thanks.

3 REPLIES 3
DX - Load Balancing & Application Acceleration

Re: Outlook 2007 problems?

‎02-06-2009 03:07 AM

OWA will work through a cluster (enable OWA support in the Advanced options of the Cluster VIP) but you will need to use a Forwarder or SLB VIP for RPC over HTTP(S), as a cluster will not work.   This is becase a cluster inspects the Methods in the client request and RPC_IN_DATA and RPC_OUT_DATA are not valid so the request is blocked - they are not defined in any relevant RFCs. 

 

DX - Load Balancing & Application Acceleration

Re: Outlook 2007 problems?

‎02-06-2009 08:06 AM

Thats what I was afraid of.

 

 

I trying to avoid advertising a different url for rpc over http.

 

 

I was hoping that there would be a super secret undocumented command that lets the user define valid methods Smiley Happy

DX - Load Balancing & Application Acceleration

Re: Outlook 2007 problems?

‎02-09-2009 05:11 AM

 

Having the RPC methods is part of the problem but it seems RCP over HTTP also uses one connection to send the requests (RPC_IN_DATA) while the responses come back on the other (RPC_OUT_DATA).   The DX follows the HTTP RFC so we expect responses to come back on the same channel - for example,  we link the request and response so apprules can use request data to decide how to manipulate the response data.    

The Apache bug entry for this at https://issues.apache.org/bugzilla/show_bug.cgi?id=40029 has some details on the problem for the Apache mod_proxy.

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