http refactored to fix circular references

net/http_request.ios.ts

@@ -0,0 +1,70 @@
+/**
+  * iOS specific http client implementation.
+  */
+import image = require("Image/image");
+import promises = require("promises/promises");
+import http = require("net/http_request");
+
+export function request(options: http.HttpRequestOptions): promises.Promise<http.HttpResponse> {
+    var d = promises.defer<http.HttpResponse>();
+
+    try {
+        var sessionConfig = Foundation.NSURLSessionConfiguration.defaultSessionConfiguration();
+        var queue = Foundation.NSOperationQueue.mainQueue();
+        var session = Foundation.NSURLSession.sessionWithConfigurationDelegateDelegateQueue(
+            sessionConfig, null, queue);
+
+        var urlRequest = Foundation.NSMutableURLRequest.requestWithURL(
+            Foundation.NSURL.URLWithString(options.url));
+
+        urlRequest.setHTTPMethod(options.method);
+
+        if (options.headers && options.headers.length) {
+            for (var i = 0, l = options.headers.length; i < l; i++) {
+                var header = options.headers[i];
+
+                urlRequest.setValueForHTTPHeaderField(header.name, header.value);
+            }
+        }
+
+        var content = options.content ? options.content.toString() : "";
+        urlRequest.setHTTPBody(Foundation.NSString.initWithString(content).dataUsingEncoding(4));
+
+        var dataTask = session.dataTaskWithRequestCompletionHandler(urlRequest,
+            function (data, response, error) {
+                if (error) {
+                    d.reject(new Error(error.localizedDescription()));
+                } else {
+
+                    var headers = new Array<http.HttpHeader>();
+                    var headerFields = response.allHeaderFields();
+                    var keys = headerFields.allKeys();
+
+                    for (var i = 0, l = keys.count(); i < l; i++) {
+                        var key = keys.objectAtIndex(i);
+
+                        headers.push({ name: key, value: headerFields.valueForKey(key) });
+                    }
+
+                    d.resolve({
+                        content: {
+                            toString: () => { return NSDataToString(data); },
+                            toJSON: () => { return JSON.parse(NSDataToString(data)); },
+                            toImage: () => { return image.Image.imageFromData(data); }
+                        },
+                        statusCode: response.statusCode,
+                        headers: headers
+                    });
+                }
+            });
+
+        dataTask.resume();
+    } catch (ex) {
+        d.reject(ex);
+    }
+    return d.promise();
+}
+
+function NSDataToString(data: any): string {
+    return Foundation.NSString.initWithDataEncoding(data, 4).toString();
+}