[rabbitmq-discuss] Rabbitmq-C amqp_basic_publish crash on connection loss

[Lothe Shashank]

Hi Alan,

Thanks for your earlier prompt replies. I am simulating a situation to test amqp_basic_publish. I modified the amqp_sendstring example to publish a message to the broker every 3 seconds. While the messages are getting published, I stop the broker using "rabbitmqctl stop_app". As the broker is stopped, amqp_basic_publish is crashed.

Code snippet as follows.

while(1)
{
    amqp_basic_properties_t props;
    struct timeval t;
    int ret;

    t.tv_sec = 3;
    t.tv_usec = 0;
    select(0, NULL, NULL, NULL, &t);

    props._flags = AMQP_BASIC_CONTENT_TYPE_FLAG | AMQP_BASIC_DELIVERY_MODE_FLAG;
    props.content_type = amqp_cstring_bytes("text/plain");
    props.delivery_mode = 2; /* persistent delivery mode */
    printf("conn %u\n",conn);
    ret=amqp_basic_publish(conn,
                            1,
                            amqp_cstring_bytes(exchange),
                            amqp_cstring_bytes(routingkey),
                            1,
                            0,
                            &props,
                            amqp_cstring_bytes(messagebody));
    printf("ret=%d\n",ret);
}

Program output:
conn 143663112
ret=0
conn 143663112
ret=0
conn 143663112

First 2 published happened properly. After that I stopped broker. The program terminated. Considering this scenario, I would like to understand
1. if there is a way to check the connection before I publish
2. if the connection value becomes NULL, as we stop the broker.

Thanks and regards,
Shashank

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