Refactor Connection Management and Update Unit Tests for Improved Robustness #78
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This PR includes several key changes to the management of connections and the associated unit tests:
Refactored Connection class into an abstract class with two concrete implementations - PlainConnection and SecureConnection. This allows better handling of different connection types and improves code readability and maintainability.
Updated the Manager class to handle connection errors, retries, and logging better. This includes adding event listeners for various connection events and implementing a retry mechanism for retriable errors.
Updated unit tests to reflect these changes and to better test the new logic. Tests now cover plain and secure connections and check the correct handling of log entries and queue flushing.
These changes are intended to improve the robustness of the connection management and to ensure that the system handles errors and retries appropriately.