Log In
04/07/2014
Offline
The UA Spec indicates that the TimeoutHint from the UA Client is a suggestion to the UA Server. The UA Server should use the timeouthint provided by the client as the minimum timeout.
Given that PublishRequests are using for multiple subscriptions, say you have the following 3 subscriptions:
10,000 ms Publishing Interval
15,000 ms Publishing Interval
86, 400, 000 ms (24 Hour) Publishing Interval
What would be the recommended Timeout Hint to use for Publishing Intervals given that if I use something greater than 24 Hours it will take 24+ hours for the requests to timeout for the faster publishing intervals?
This would cause excessive delays to users in knowing that the requests for faster publishing intervals have timed out.
05/30/2017
Offline
First PublishingInterval should not be that long.
If you don't need frequent samples then set the SamplingInterval on MonitoredItems.
Second, use the KeepAliveInterval to keep your Publish requests fresh.
i.e. use 10 mins TimeoutHint but a 5 min PublishingInterval and KeepAliveCount = 1.
This ensures a PublishRequest is consumed long before it times out.
You would only get actually data in a response when the SamplingInterval expires (10,000 ms, 15,000 ms or 86, 400, 000 ms)
1 Guest(s)
Usage Policy