http client reworked (temporary getString, getJSON and getImage in separate file)

net/http_common.ts

@@ -0,0 +1,42 @@
+import image_module = require("Image/image");
+import promises = require("promises/promises");
+import http = require("net/http_client");
+
+/**
+  * Gets string from url.
+  */
+export function getString(url: string): promises.Promise<string> {
+    var d = promises.defer<string>();
+
+    http.request({ url: url, method: "GET" })
+        .then(r => d.resolve(r.body.toString()))
+        .fail(e => d.reject(e));
+
+    return d.promise();
+}
+
+/**
+  * Gets JSON from url.
+  */
+export function getJSON<T>(url: string): promises.Promise<T> {
+    var d = promises.defer<T>();
+
+    http.request({ url: url, method: "GET" })
+        .then(r => d.resolve(r.body.toJSON()))
+        .fail(e => d.reject(e));
+
+    return d.promise();
+}
+
+/**
+  * Gets image from url.
+  */
+export function getImage(url: string): promises.Promise<image_module.Image> {
+    var d = promises.defer<image_module.Image>();
+
+    http.request({ url: url, method: "GET" })
+        .then(r => d.resolve(r.body.toImage()))
+        .fail(e => d.reject(e));
+
+    return d.promise();
+}