google cloud pubsub - Pull extremely slow when no messages on queue -


i using pubsub gmail push notifications.

the pubsub subscription recieves messages expected.

when pull messages have noticed if there no messages pull delay in getting response slow.

if there @ least 1 message pull response timely

has else experienced this?

the fix can come leave message on queue.

if (credential.requestaccesstokenasync(cancellationtoken.none).result) {     var pubsubserivce = new google.apis.pubsub.v1beta2.pubsubservice(     new baseclientservice.initializer()     {         httpclientinitializer = credential,         applicationname = "ilink",     });      pullrequest pr = new pullrequest();     pr.maxmessages = 100;     pullresponse prs = pubsubserivce.projects.subscriptions.pull(pr, "projects/vivid-canyon-90023/subscriptions/ilink").execute();      acknowledgerequest ak = new acknowledgerequest();      if (prs != null && prs.receivedmessages != null)     {                             ak.ackids = new list<string>();         string messagetext = "";         foreach (receivedmessage rm in prs.receivedmessages)         {             ak.ackids.add(rm.ackid);             messagetext += " | " + rm.message.data;         }         pubsubserivce.projects.subscriptions.acknowledge(ak, "projects/vivid-canyon-90023/subscriptions/ilink").execute();         master.setsuccessprompt("pulled total meesage count of: " + prs.receivedmessages.count + " | data | " + messagetext);     }     else     {         master.setsuccessprompt("no messages pull");     } }

this not slow, hanging , waiting messages. try using returnimmediately=true.


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