PubNub: Publish does not seem to be working for me on 3G network -

i'm using pubnub. there no problem doing publish , subscribe. however, publish not work on slow connection 3g network. wifi ok people 4g has have same problem. know how fix it?

what want below.

1. usera opens web page pc , subscribe channel. 2. usera publishes data channel mobile app. 

pubnub on 3g/4g/lte mobile networks

use backfill: true option when invoke pubnub.subscribe(...) method. allows device receive messages on mobile networks. backfill option prevents mobile network latency race conditions.

// setup  var channel = 'a'+math.random();  var pubnub  = pubnub({      ssl             : true  ,   "publish_key"   : "pub-c-aefb421c-b30a-4afc-bae4-b866c5ea3d69"  ,   "subscribe_key" : "sub-c-76f89e66-c3a9-11e5-b5a8-0693d8625082"  });    // receive message  pubnub.subscribe({      backfill : true  ,   channel  : channel  ,   error    : out  ,   connect  : publish  ,   message  : out  });    // send message  function publish() {       out("connected!");      pubnub.publish({          channel : channel      ,   error   : out      ,   message : "success works!"      });  }    // network check  pubnub.time(function(a){out(a ? "network check" : "network bad")});    function out(m) {      document.getelementbyid("result").innerhtml           += "<br>" + json.stringify(m);   }

<script src="https://cdn.pubnub.com/pubnub-dev.js"></script>  <h1>pubnub 3g/4g/lte network</h1>  <div id="result">processing_connectivity...</div>

pubnub mobile network - example output

you may decide want option. can issue pubnub.publish() method call inside connect callback.

pubnub.subscribe({     channel  : channel,     message  : out,     connect  : function() {         pubnub.publish({             channel : channel         ,   message : "success works!"         });     } });