Reconnect provisioning socket

If the provisioning socket closes, reconnect and generate a new qr code.
Fixes #371

// FREEBIE

js/libtextsecure.js

@@ -39073,10 +39073,11 @@ var TextSecureServer = (function() {
             var registerKeys = this.server.registerKeys.bind(this.server);
             var getSocket = this.server.getProvisioningSocket.bind(this.server);
             return textsecure.protocol_wrapper.createIdentityKeyRecvSocket().then(function(cryptoInfo) {
-                return new Promise(function(resolve) {
+                return new Promise(function(resolve, reject) {
                     var socket = getSocket();
                     socket.onclose = function(e) {
                         console.log('websocket closed', e.code);
+                        reject(new Error('websocket closed'));
                     };
                     var wsr = new WebSocketResource(socket, {
                         keepalive: { path: '/v1/keepalive/provisioning' },

js/options.js

@@ -61,10 +61,13 @@
         });
 
         $(function() {
+            var accountManager = new bg.getAccountManager();
+
+            var init = function() {
                 $('#init-setup').show().addClass('in');
+                $('#qr').html('');
                 $('#status').text("Connecting...");
 
-            var accountManager = new bg.getAccountManager();
                 accountManager.registerSecondDevice(setProvisioningUrl, confirmNumber, incrementCounter).then(function() {
                     var launch = function() {
                         bg.openInbox();
@@ -76,9 +79,10 @@
                     bg.addEventListener('textsecure:contactsync', launch);
                     $('.progress-dialog .status').text('Syncing groups and contacts');
                     $('.progress-dialog .bar').addClass('progress-bar-striped active');
-
                 }).catch(function(e) {
-                if (e.name === 'HTTPError' && e.code == 411) {
+                    if (e.message === 'websocket closed') {
+                        init();
+                    } else if (e.name === 'HTTPError' && e.code == 411) {
                         $('.progress-dialog').hide();
                         $('.error-dialog').show();
                         $('.error-dialog .ok').click(function(e) {
@@ -89,6 +93,8 @@
                         throw e;
                     }
                 });
+            };
+            init();
         });
     });
 })();

libtextsecure/account_manager.js

@@ -36,10 +36,11 @@
             var registerKeys = this.server.registerKeys.bind(this.server);
             var getSocket = this.server.getProvisioningSocket.bind(this.server);
             return textsecure.protocol_wrapper.createIdentityKeyRecvSocket().then(function(cryptoInfo) {
-                return new Promise(function(resolve) {
+                return new Promise(function(resolve, reject) {
                     var socket = getSocket();
                     socket.onclose = function(e) {
                         console.log('websocket closed', e.code);
+                        reject(new Error('websocket closed'));
                     };
                     var wsr = new WebSocketResource(socket, {
                         keepalive: { path: '/v1/keepalive/provisioning' },