Timeout problem #18

sglee-huconn · 2020-09-02T10:37:11Z

In the example, a publish is executed up to 10 times. but for testing, I modified the loop to be infinite and not to go out of the loop as in the following code.

    for (uint32_t i = 0; ;i++) {
        // - for i in 0..9
        //  - wait up to 1 sec
        //  - if no message received Publish: "You have %d sec remaining to say hello...", 10-i
        //  - other wise, exit
        // if (wait_sem.try_acquire_for(1000)) {
        //     break;
        // }

        time(&ts);

        static char message[2048];
        snprintf(message, 2048, \
        "{\"timestamp\":\"%"PRIu64"\",\"int\":\"%"PRIi32"\",\"unsigned\":\"%"PRIu32"\"}" \
        , ts, -1, i \
        );
    ....
        auto pub_status = IotMqtt_PublishSync(connection, &publish,
                                              /* flags */ 0, /* timeout ms */ MQTT_TIMEOUT_MS);
        if (pub_status != IOT_MQTT_SUCCESS) {
            tr_warning("AWS Sdk: failed to publish message with %u.", pub_status);
        }

        ThisThread::sleep_for(500);
   }

at first, it runs well. but after some time, it emits a timeout error or a socket error.

when QoS1 is set, I found the following truth.
in a normal state, the socket reads 33, 95 bytes in turn while in the timeout situation it reads 128 bytes at once

when I set QoS to 0, It isn't timed out but after a while, it eventually shows socket error and isn't recovered.

i am testing with STM DISCO IOT01A board though Wifi.

The text was updated successfully, but these errors were encountered:

ciarmcom · 2020-10-13T14:03:49Z

@sglee-huconn thank you for raising this issue.Please take a look at the following comments:

Could you add some more detail to the description? A good description should be at least 25 words.
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ciarmcom · 2020-10-18T13:45:04Z