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The ping/pong is actually untested at this point, because Paho (my test client for now) doesn't do those. I wonder if any do, because MQTT already has ping/pong.
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Also changed the disconnect reason a little: it now shows them all, so I don't have to worry about which one is more important.
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And include some extra error conditions.
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It also contains some related improvements that I needed: * Show disconnect reason * Fix the while condition for doing write() to avoid an unnecessary call * Config reloading logic
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Also includes fixes to packet parsing that I couldn't make a separate commit for. When it comes to QoS 1, these things are still left, off the top of my head: - vector for qos queue? It helps with ordering and is CPU cache friendly. - Store subscription QoS. - Do retained messages have QoS? - Give session client's name, to access it later.
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The test cases give a bunch of warnings, but that's the COMPARE macro's fault. Let's see what to do...
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The MQTT docs showed a wrong condition for checking malformed packets. And, we have to grow buffers to MAX_PACKET_SIZE, otherwise we can't process. I still have some inteligent buffer shrink logic in mind.
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Because the connectionClose would set fd=-1, clients were never properly removed from the map, because the fd is the key. Also fixed a locking issue when an exception happened.
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Roughly...
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And I had to fix a threading bug.