support requesting rpc service using http protocol

app/index.html

@@ -185,6 +185,7 @@
 <script src="scripts/filters/volumn.js"></script>
 <script src="scripts/langs/en-US.js"></script>
 <script src="scripts/langs/zh-CN.js"></script>
+<script src="scripts/services/aria2HttpRpcService.js"></script>
 <script src="scripts/services/aria2RpcService.js"></script>
 <script src="scripts/services/aria2WebSocketRpcService.js"></script>
 <script src="scripts/services/ariaNgSettingService.js"></script>

app/scripts/core/constants.js

@@ -6,6 +6,7 @@
         appPrefix: 'AriaNg'
     }).constant('ariaNgDefaultOptions', {
         localeName: 'en-US',
+        protocol: 'http',
         globalStatRefreshInterval: 1000,
         downloadTaskRefreshInterval: 1000
     }).constant('aria2RpcConstants', {

app/scripts/services/aria2HttpRpcService.js

@@ -0,0 +1,33 @@
+(function () {
+    'use strict';
+
+    angular.module('ariaNg').factory('aria2HttpRpcService', ['$http', 'ariaNgSettingService', function ($http, ariaNgSettingService) {
+        var rpcUrl = ariaNgSettingService.getJsonRpcUrl('http');
+
+        return {
+            request: function (context) {
+                if (!context) {
+                    return;
+                }
+
+                var requestContext = {
+                    url: rpcUrl,
+                    method: 'POST',
+                    data: context.requestBody
+                };
+
+                return $http(requestContext).success(function (data, header, config, status) {
+                    if (!data || !data.result) {
+                        return;
+                    }
+
+                    if (context.callback) {
+                        context.callback(data.result);
+                    }
+                }).error(function (data, header, config, status) {
+                    //Do Nothing
+                });
+            }
+        };
+    }]);
+})();

app/scripts/services/aria2RpcService.js

@@ -1,7 +1,7 @@
 (function () {
     'use strict';
 
-    angular.module('ariaNg').factory('aria2RpcService', ['aria2RpcConstants', 'aria2WebSocketRpcService', 'utils', function (aria2RpcConstants, aria2WebSocketRpcService, utils) {
+    angular.module('ariaNg').factory('aria2RpcService', ['aria2RpcConstants', 'ariaNgSettingService', 'aria2HttpRpcService', 'aria2WebSocketRpcService', 'utils', function (aria2RpcConstants, ariaNgSettingService, aria2HttpRpcService, aria2WebSocketRpcService, utils) {
         var invoke = function (method, context) {
             context.uniqueId = utils.generateUniqueId();
             context.requestBody = {
@@ -11,7 +11,11 @@
                 params: context.params
             };
 
-            return aria2WebSocketRpcService.request(context);
+            if (ariaNgSettingService.getProtocol() == 'ws') {
+                return aria2WebSocketRpcService.request(context);
+            } else {
+                return aria2HttpRpcService.request(context);
+            }
         };
 
         return {

app/scripts/services/aria2WebSocketRpcService.js

@@ -2,7 +2,7 @@
     'use strict';
 
     angular.module('ariaNg').factory('aria2WebSocketRpcService', ['$websocket', 'ariaNgSettingService', function ($websocket, ariaNgSettingService) {
-        var rpcUrl = ariaNgSettingService.getJsonRpcUrl();
+        var rpcUrl = ariaNgSettingService.getJsonRpcUrl('ws');
         var socketClient = $websocket(rpcUrl);
         var sendIdMapping = {};
 

app/scripts/services/ariaNgSettingService.js

@@ -29,12 +29,6 @@
         };
 
         return {
-            get: function (key) {
-                return getOption(key);
-            },
-            set: function (key, value) {
-                return setOption(key, value);
-            },
             getLocaleName: function () {
                 return getOption('localeName');
             },
@@ -42,14 +36,20 @@
                 setOption('localeName', value);
                 $translate.use(value);
             },
-            getJsonRpcUrl: function () {
+            getJsonRpcUrl: function (protocol) {
                 var rpcHost = getOption('aria2RpcHost');
 
                 if (!rpcHost) {
                     rpcHost = $location.$$host + ':6800';
                 }
 
-                return 'ws://' + rpcHost + '/jsonrpc';
+                return protocol + '://' + rpcHost + '/jsonrpc';
+            },
+            getProtocol: function () {
+                return getOption('protocol');
+            },
+            setProtocol: function (value) {
+                setOption('protocol', value);
             },
             getGlobalStatRefreshInterval: function () {
                 return getOption('globalStatRefreshInterval');
@@ -59,11 +59,11 @@
             },
             getDisplayOrder: function () {
                 var value = getOption('displayOrder');
-                
+
                 if (!value) {
                     value = 'default';
                 }
-                
+
                 return value;
             },
             setDisplayOrder: function (value) {