Merge pull request #730 from MetaMask/i695-dapp-reload

dapp reload - fixed disconnect detection via polling

1 files changed, 16 insertions, 5 deletions

diff --git a/app/scripts/inpage.js b/app/scripts/inpage.js
index 28a1223ac..ef199946c 100644
--- a/app/scripts/inpage.js
+++ b/app/scripts/inpage.js
@@ -2,6 +2,8 @@
 cleanContextForImports()
 require('web3/dist/web3.min.js')
 const LocalMessageDuplexStream = require('post-message-stream')
+const PingStream = require('ping-pong-stream/ping')
+const endOfStream = require('end-of-stream')
 const setupDappAutoReload = require('./lib/auto-reload.js')
 const MetamaskInpageProvider = require('./lib/inpage-provider.js')
 restoreContextAfterImports()
@@ -29,13 +31,22 @@ web3.setProvider = function () {
   console.log('MetaMask - overrode web3.setProvider')
 }
 console.log('MetaMask - injected web3')
+// export global web3, with usage-detection reload fn
+var triggerReload = setupDappAutoReload(web3)
 
-//
-// export global web3 with auto dapp reload
-//
-
+// listen for reset requests from metamask
 var reloadStream = inpageProvider.multiStream.createStream('reload')
-setupDappAutoReload(web3, reloadStream)
+reloadStream.once('data', triggerReload)
+
+// setup ping timeout autoreload
+// LocalMessageDuplexStream does not self-close, so reload if pingStream fails
+var pingChannel = inpageProvider.multiStream.createStream('pingpong')
+var pingStream = new PingStream({ objectMode: true })
+// wait for first successful reponse
+metamaskStream.once('data', function(){
+  pingStream.pipe(pingChannel).pipe(pingStream)
+})
+endOfStream(pingStream, triggerReload)
 
 // set web3 defaultAcount
 inpageProvider.publicConfigStore.subscribe(function (state) {