Send heartbeats from the provider. This keeps unauthorized and offline devices present as well, which is what we want. This also greatly reduces the number of queries to rethinkdb.

lib/cli.js

@@ -46,6 +46,10 @@ program
   .option('-r, --storage-url <url>'
     , 'URL to storage client'
     , String)
+  .option('--heartbeat-interval <ms>'
+    , 'heartbeat interval'
+    , Number
+    , 10000)
   .action(function() {
     var serials = cliutil.allUnknownArgs(arguments)
       , options = cliutil.lastArg(arguments)
@@ -63,6 +67,7 @@ program
     require('./roles/provider')({
       name: options.name
     , killTimeout: 10000
+    , heartbeatInterval: options.heartbeatInterval
     , ports: cliutil.range(options.minPort, options.maxPort)
     , filter: function(device) {
         return serials.length === 0 || serials.indexOf(device.id) !== -1
@@ -106,10 +111,6 @@ program
     , 'public ip for global access'
     , String
     , ip())
-  .option('--heartbeat-interval <ms>'
-    , 'heartbeat interval'
-    , Number
-    , 10000)
   .option('-t, --group-timeout <seconds>'
     , 'group timeout'
     , Number
@@ -143,7 +144,6 @@ program
         sub: options.connectSub
       , push: options.connectPush
       }
-    , heartbeatInterval: options.heartbeatInterval
     , groupTimeout: options.groupTimeout * 1000 // change to ms
     , storageUrl: options.storageUrl
     })