mqtt qos2

[zzzlll111]

Hello please can you write a more detailed mqtt public qos2 quality routine?

[scaprile]

I'm sorry, current docs is as far as we will go with this. Any proficient developer should be able to understand that and write application code
#2689
Please see our documentation, and follow the guidelines in our tutorials.
https://mongoose.ws/documentation/tutorials/mqtt/mqtt-client/#sending-qos-2-messages

mongoose/test/unit_test.c

Lines 606 to 635 in 22b52f8

	// Publish with QoS2 to subscribed topic and check (simultaneous) reception
	// keep former opts.topic
	opts.message = mg_str("hi2"), opts.qos = 2, opts.retain = false;
	if (mqtt_version == 5) {
	opts.props = properties;
	opts.num_props = 5;
	construct_props(properties);
	}
	retries = 0; // don't do retries for test speed
	do { // retry on failure after an expected timeout
	opts.retransmit_id = mg_mqtt_pub(c, &opts); // save id for possible resend
	for (i = 0; i < 500 && !(test_data.flags & flags_received); i++)
	mg_mgr_poll(&mgr, 10);
	} while (!(test_data.flags & flags_received) && retries--);
	ASSERT(test_data.flags & flags_received);
	test_data.flags &= ~flags_received;
	opts.retransmit_id = 0;
	// Mongoose sent PUBREL, wait for PUBCOMP
	for (i = 0; i < 500 && !(test_data.flags & flags_completed); i++)
	mg_mgr_poll(&mgr, 10);
	// TODO(): retry sending PUBREL on failure after an expected timeout
	// or broker sends PUBREC again
	ASSERT(test_data.flags & flags_completed);
	for (i = 0; i < 500 && mbuf[1] == 0; i++) mg_mgr_poll(&mgr, 10);
	check_mqtt_message(&opts, &test_data, true);
	for (i = 0; i < 500 && !(test_data.flags & flags_released); i++)
	mg_mgr_poll(&mgr, 10);
	ASSERT(test_data.flags & flags_released); // Mongoose sent PUBCOMP
	memset(mbuf + 1, 0, sizeof(mbuf) - 1);
	test_data.flags = 0;