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Motivation: The ability to pause reading from the socket to avoid being overwhelmed by QoS 0 messages during traffic spikes. When reading is paused, incoming data accumulates in the TCP receive buffer. As the buffer fills up, the TCP stack advertises a reduced window size (eventually a zero window) to the broker, applying backpressure at the TCP level. At that point, outgoing data may accumulate in the broker’s socket send buffer until its limits are reached. Depending on the broker’s implementation and configuration, QoS 0 messages that cannot be written may be buffered or dropped. Changes: Implement new pause/resume methods that delegate to the corresponding NetSocketInternal methods.
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PR #262 into master branch