I have a winform app that will run either minimized or in the system tray. Part of its job is to display incoming caller info. I am using the C# SDK to successfully authenticate, create the subscription and then receive notification information. The problems start when I just leave the program running and no new events are coming in simulating the use case where someone leaves the program running overnight (or an extended lunch). We start to see first chance web socket exceptions, null exceptions and eventually a code break will happen and a final error will indicate that objects have been optimized away. These errors are coming from the SDK code and don't bubble up through any try/catch code so that I could handle the error. The application is dead simple at this point. It connects, authorizes, creates a subscription and listens via callbacks. Is there a method I need to call on a timer to keep the objects alive?
Testing with the simplified code shared above. Looks like the original issues are fixed. Ran for many hours and did not see a disconnect. A new issue seems to be we are not getting subscription messages when the presence is supposed to change to "Ringing". The softphone is still configured to connect to the sandbox account and is prompting correctly for inbound calls. When watching the code execution we are getting nothing on the notification side from the subscription. Tested this out on the original code, and the simplified example shared above. No dice.
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Got it. Just sent an email over with all of the details. I'll be happy to share the exact code that we are using to test the functionality if the instructions for recreating don't make sense in the support ticket.
Quick update. I downloaded the code from github and compiled locally. Used those in the project instead of getting the SDK from Nuget. Isolated the issue to the PubnubCore ClientNetworkStatus.cs file. Looks like the error is being thrown from the ParseCheckSocketConnectException<T> method. Looks like it believes that the Internet/socket connection was lost. Still looks like an object was caught up by garbage collection but I can't tell which one.