How does publisher get confirmation of message delivery to consumer

[pooja khambhayata]

Hello ,

I am new to rabbit mq.. and I have two different apps connected with rabbit mq. One with java and other with node js. Node js app is a publisher and java app is a consumer. 8 would like to know if a publisher can get acknowledged if the consumer received message successfully .

Currently if my receiver app is down then publisher app keeps on waiting for ever for message to be received

[Michael Klishin]

See tutorial 6 on http://www.rabbitmq.com/getstarted.html and  http://www.rabbitmq.com/confirms.html.
Publishers are unaware of consumers unless consumers notify them.

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MK

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[Michael Klishin]

+rabbitmq-users. I do not offer 1-on-1 support of any kind.

Publishers are unaware of deliveries to consumers. See http://rabbitmq.com/confirms.html.

On Fri, Dec 23, 2016 at 7:36 PM, pooja khambhayata <pooja.kh...@gmail.com> wrote:

thank you for the response. that helped and I went through the links to implement below:

I created a channel using, 

amqpConn.createConfirmChannel(function(err, ch) {

and for publishing I am doing as below. when rabbitMQ server is up and consumer app is up, i see both the prints highlighted in bold. "Message confirmed" and "Message delivered to Receiver App". But when I shutdown the Receiver App, I still get both the prints. 

I was expecting one of the prints to miss since my Receiver App did not acknowledge and it was down. I also see the queue on rabbitMQ server has messages sitting there yet to be consumed.  Please help on this? Thanks in advance. 

pubChannel.publish(exchange, msgType, content, reqq, function(err, ok) {

if (err !=null) {

console.log(cName," Error while publish", err);

}

else{

console.log("Message confirmed");

}

});

pubChannel.waitForConfirms(function(err){

       if(err !=null){

         console.error('ERR',err);

       }

       else{

         console.log('Message delivered to Receiver App');

       }

     });

Best,
Pooja

On Sun, Dec 18, 2016 at 5:25 PM, Michael Klishin <mkli...@pivotal.io> wrote:

See tutorial 6 on http://www.rabbitmq.com/getstarted.html and  http://www.rabbitmq.com/confirms.html.
Publishers are unaware of consumers unless consumers notify them.

On 19 December 2016 at 00:47:35, pooja khambhayata (pooja.kh...@gmail.com) wrote:
> Hello ,
>
> I am new to rabbit mq.. and I have two different apps connected with rabbit mq. One with
> java and other with node js. Node js app is a publisher and java app is a consumer. 8 would
> like to know if a publisher can get acknowledged if the consumer received message successfully
> .
>
> Currently if my receiver app is down then publisher app keeps on waiting for ever for message
> to be received
>
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> You received this message because you are subscribed to the Google Groups "rabbitmq-users"
> group.

> To unsubscribe from this group and stop receiving emails from it, send an email to rabbitmq-users+unsubscribe@googlegroups.com.

> To post to this group, send an email to rabbitm...@googlegroups.com.
> For more options, visit https://groups.google.com/d/optout.
>

--
MK

Staff Software Engineer, Pivotal/RabbitMQ

[pooja khambhayata]

thank you for the response. that helped and I went through the links to implement below:

I created a channel using, 

amqpConn.createConfirmChannel(function(err, ch) {

and for publishing I am doing as below. when rabbitMQ server is up and consumer app is up, i see both the prints highlighted in bold. "Message confirmed" and "Message delivered to Receiver App". But when I shutdown the Receiver App, I still get both the prints. 

I was expecting one of the prints to miss since my Receiver App did not acknowledge and it was down. I also see the queue on rabbitMQ server has messages sitting there yet to be consumed.  Please help on this? Thanks in advance. 

pubChannel.publish(exchange, msgType, content, reqq, function(err, ok) {

if (err !=null) {

console.log(cName," Error while publish", err);

}

else{

console.log("Message confirmed");

}

});

pubChannel.waitForConfirms(function(err){

        if(err !=null){

          console.error('ERR',err);

        }

        else{

          console.log('Message delivered to Receiver App');

        }

      });

Best,
Pooja

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