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Re: [xmlblaster] persistent connection behavior

Hi John,
persistent connections and sessions only ensure that these are available again after a server crash recovery. The behavior you are expecting is the failsafe behavior described in the requirement:


(of course together with the persistent sessions you already have).

Follow the instructions described at the end of the requirement. Basically retries=-1 (both for connections and callbacks), set a ping interval and a delay, choose positive sessionIds (always for the persistent sessions and subscriptions), configure the maxEntries for the callback and the connection queue and that should make it!


Horner, John wrote:
I had always believed that if I had a persistent connection and subscription that the server would remember me and what I had had delivered if I lost my connection.

We tried an experiment where we connected with a persistent connection, made a persistent subscription, and then after a while unplugged the ethernet cable to the client. We expected that when we plugged back in the cable that everyone would connect and pick right back up where we left off.

Perhaps I was naive. Upon closer reading of the reference doc it only claims that persistent connections survive server crashes, not general loss of connection. So, what exactly are the conditions across which a persistent connection survives?

Is there a good way to accomplish what we want (recommence delivery automatically following any connection failure)?

John Horner

Open Roads Consulting Inc.
(757) 546-3401