Adapt to latest Asio APIs (Asio 1.32 or Boost.Asio 1.87) #477
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Apr 9, 2025
This was introduced in v3.7.0 via apache#477. which contained a change that attempted to fix an issue where a pre-mature ack of a message before a multi-topic subscriber was ready could have caused a crash. To fix the original bug, all multi-topic subscriptions are started with their message listener paused. They later get un-paused once all topics are successfully subscribed and connected. However, on a regex subscription when new topics are discovered, they also start in a paused state, and there's no mechanism to resume them. Hence, they get stuck, and no messages for new topics will be processed. This change adds a call to resume any new listeners after new topics are added. The fix has been deployed to production in my company's infrastructure and has been confirmed working for a few weeks.
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Fixes #475
Motivation
There were some breaking changes with Boost.Asio APIs so that the code base is incompatible with the latest Boost.Asio.
Modifications
Adapt to latest Asio APIs and improve workflow test both Asio and Boost.Asio.