From ed6badbabeb876592f2fbe3919b5831292c7da05 Mon Sep 17 00:00:00 2001
From: Mikael Mengistu <mikaelm12@users.noreply.github.com>
Date: Wed, 5 Jul 2017 16:02:04 -0700
Subject: [PATCH] Set X-Requested-With header and add HttpError (#623)

---
 .../HttpClient.ts                                 | 15 ++++++---------
 .../HttpError.ts                                  |  7 +++++++
 2 files changed, 13 insertions(+), 9 deletions(-)
 create mode 100644 client-ts/Microsoft.AspNetCore.SignalR.Client.TS/HttpError.ts

diff --git a/client-ts/Microsoft.AspNetCore.SignalR.Client.TS/HttpClient.ts b/client-ts/Microsoft.AspNetCore.SignalR.Client.TS/HttpClient.ts
index 34621586ed..9650fe7d28 100644
--- a/client-ts/Microsoft.AspNetCore.SignalR.Client.TS/HttpClient.ts
+++ b/client-ts/Microsoft.AspNetCore.SignalR.Client.TS/HttpClient.ts
@@ -1,3 +1,5 @@
+import { HttpError } from "./HttpError"
+
 export interface IHttpClient {
     get(url: string, headers?: Map<string, string>): Promise<string>;
     options(url: string, headers?: Map<string, string>): Promise<string>;
@@ -22,6 +24,7 @@ export class HttpClient implements IHttpClient {
             let xhr = new XMLHttpRequest();
 
             xhr.open(method, url, true);
+            xhr.setRequestHeader("X-Requested-With", "XMLHttpRequest");
 
             if (headers) {
                 headers.forEach((value, header) => xhr.setRequestHeader(header, value));
@@ -33,19 +36,13 @@ export class HttpClient implements IHttpClient {
                     resolve(xhr.response);
                 }
                 else {
-                    reject({
-                        status: xhr.status,
-                        statusText: xhr.statusText
-                    });
+                    reject(new HttpError(xhr.statusText, xhr.status));
                 }
             };
 
             xhr.onerror = () => {
-                reject({
-                    status: xhr.status,
-                    statusText: xhr.statusText
-                });
-            };
+                reject(new HttpError(xhr.statusText, xhr.status));
+            }
         });
     }
 }
\ No newline at end of file
diff --git a/client-ts/Microsoft.AspNetCore.SignalR.Client.TS/HttpError.ts b/client-ts/Microsoft.AspNetCore.SignalR.Client.TS/HttpError.ts
new file mode 100644
index 0000000000..e8c04c3e79
--- /dev/null
+++ b/client-ts/Microsoft.AspNetCore.SignalR.Client.TS/HttpError.ts
@@ -0,0 +1,7 @@
+export class HttpError extends Error {
+    statusCode: number;
+    constructor(errorMessage: string, statusCode: number) {
+        super(errorMessage);
+        this.statusCode = statusCode;
+    }
+}
\ No newline at end of file