From f4f060a45b233e6cd17e3ef2b6bf72e29d58518c Mon Sep 17 00:00:00 2001
From: Yemel Jardi <angel.jardi@gmail.com>
Date: Thu, 15 May 2014 13:04:26 -0700
Subject: [PATCH 1/2] add logout callback on beforeunload

---
 js/controllers/header.js | 21 ++++++++++++++++-----
 1 file changed, 16 insertions(+), 5 deletions(-)

diff --git a/js/controllers/header.js b/js/controllers/header.js
index 331fa668d..8dd2a0555 100644
--- a/js/controllers/header.js
+++ b/js/controllers/header.js
@@ -44,11 +44,7 @@ angular.module('copay.header').controller('HeaderController',
     };
     
     $scope.signout = function() {
-      var w = $rootScope.wallet;
-      if (w) {
-        w.disconnect();
-        controllerUtils.logout();
-      }
+      logout();
       $scope.clearFlashMessage();
     };
 
@@ -64,4 +60,19 @@ angular.module('copay.header').controller('HeaderController',
     };
 
     $rootScope.isCollapsed = true;
+
+    function logout() {
+      var w = $rootScope.wallet;
+      if (w) {
+        w.disconnect();
+        controllerUtils.logout();
+      }
+    }
+
+    // Ensures a graceful disconnect
+    window.onbeforeunload = logout;
+
+    $scope.$on('$destroy', function() {
+      window.onbeforeunload = undefined;
+    });
   });

From 190185ac9c5069d0654f23c50c02f964bbcc6b46 Mon Sep 17 00:00:00 2001
From: Yemel Jardi <angel.jardi@gmail.com>
Date: Thu, 15 May 2014 17:16:26 -0700
Subject: [PATCH 2/2] handle the PeerID-already-in-use error and display a
 friendly message

---
 index.html                  |  6 +++++-
 js/controllers/signin.js    | 13 +++++++++++--
 js/models/network/WebRTC.js |  1 +
 3 files changed, 17 insertions(+), 3 deletions(-)

diff --git a/index.html b/index.html
index f893e1f9f..dbd6c5ac9 100644
--- a/index.html
+++ b/index.html
@@ -162,10 +162,14 @@
     <!-- Templates -->
     <script type="text/ng-template" id="signin.html">
       <div class="signin" ng-controller="SigninController">
-        <div data-alert class="alert-box info radius" ng-show="loading">
+        <div data-alert class="alert-box info radius" ng-show="loading && !failure">
           <i class="size-21 fi-bitcoin-circle icon-rotate spinner"></i>
           Authenticating and Looking for peers...
         </div>
+        <div class="alert-box error radius" ng-show="failure">
+          Oops, we had an error! Looks like you are already connected to this wallet,
+          please close all other Copay Wallets and <a ng-click='failure = false; loading = false'>Try again</a>.
+        </div>
         <div ng-show="!loading">
           <div class="row">
             <div class="large-6 medium-6 columns">
diff --git a/js/controllers/signin.js b/js/controllers/signin.js
index 685e176d5..d13c8b471 100644
--- a/js/controllers/signin.js
+++ b/js/controllers/signin.js
@@ -7,7 +7,7 @@ angular.module('copay.signin').controller('SigninController',
       return v1 > v2 ? 1 : ( v1 < v2 ) ? -1 : 0;
     };
 
-    $scope.loading = false;
+    $scope.loading = $scope.failure = false;
     $scope.wallets = walletFactory.getWallets().sort(cmp);
     $scope.selectedWalletId = $scope.wallets.length ? $scope.wallets[0].id : null;
     $scope.openPassword = '';
@@ -34,12 +34,13 @@ angular.module('copay.signin').controller('SigninController',
       Passphrase.getBase64Async(password, function(passphrase){
         var w = walletFactory.open($scope.selectedWalletId, { passphrase: passphrase});
         if (!w) {
-          $scope.loading = false;
+          $scope.loading = $scope.failure = false;
           $rootScope.flashMessage = { message: 'Bad password or connection error', type: 'error'};
           $rootScope.$digest();
           return;
         }
         controllerUtils.startNetwork(w);
+        listenErrors(w);
       });
     };
 
@@ -66,8 +67,16 @@ angular.module('copay.signin').controller('SigninController',
               controllerUtils.onErrorDigest();
           } else {
               controllerUtils.startNetwork(w);
+              listenErrors(w);
           }
         });
       });
     };
+
+    function listenErrors(wallet) {
+      wallet.network.on('error', function(err) {
+        $scope.failure = true;
+      });
+    }
+
   });
diff --git a/js/models/network/WebRTC.js b/js/models/network/WebRTC.js
index 675893af7..06e230537 100644
--- a/js/models/network/WebRTC.js
+++ b/js/models/network/WebRTC.js
@@ -262,6 +262,7 @@ Network.prototype._setupPeerHandlers = function(openCallback) {
   p.on('error', function(err) {
     if (!err.message.match(/Could\snot\sconnect\sto peer/)) {
       console.log('### PEER ERROR:', err);
+      self.emit('error', err);
     }
     self._checkAnyPeer();
   });