title: rabbitmq : message is not consumed by consumer , but publisher is able to publish message
body: <p>I am using rabbitmq to for messaging in my service. Lets suppose there are 2 micro service A and B. </p>
  
  <p>there are more 3 exchange and respective queue is there in between. </p>
  
  <p>A is publisher and B is consumer here. while sending message from A it is successfully updating in queue( able to see in console queue is increases). But here consumer is not able to receive messages. previously it was working. </p>
  
  <p>but for other exchange and queue , consumer is working fine. </p>
  
  <p>I tried purze the queue and restarted application , didnt helped me. there is always 4 unached message in queue and rest is ready to Go. finally I deleted queue and exchange and respective routing key and recreated the same. then all working fine.. </p>
  
  <p>Can any one help me here what happened to this. Why it didnt worked?</p>