From 602ca479b8372e7672b4fd2afefccd62488ef6a3 Mon Sep 17 00:00:00 2001
From: Pawel Kadluczka <pawelka@microsoft.com>
Date: Thu, 28 Sep 2017 14:28:57 -0700
Subject: [PATCH] Checking if window.document defined before trying to resolve
 url

---
 .vscode/launch.json                           | 22 +++++++++++++++++++
 .../Connection.spec.ts                        |  7 ++++++
 .../HttpConnection.ts                         |  2 +-
 3 files changed, 30 insertions(+), 1 deletion(-)
 create mode 100644 .vscode/launch.json

diff --git a/.vscode/launch.json b/.vscode/launch.json
new file mode 100644
index 0000000000..313c0a9d9e
--- /dev/null
+++ b/.vscode/launch.json
@@ -0,0 +1,22 @@
+{
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "type": "node",
+            "request": "launch",
+            "name": "Launch Program",
+            "program": "${workspaceRoot}/client-ts/node_modules/jasmine/bin/jasmine.js",
+            "args": ["JASMINE_CONFIG_PATH=${workspaceRoot}/client-ts/Microsoft.AspNetCore.SignalR.Client.TS.Tests/jasmine.json"],
+            "cwd": "${workspaceRoot}/client-ts",
+            "outFiles": []
+        },
+        {
+            "type": "node",
+            "request": "attach",
+            "name": "Attach to Port",
+            "address": "localhost",
+            "port": 5858,
+            "outFiles": []
+        }
+    ]
+}
\ No newline at end of file
diff --git a/client-ts/Microsoft.AspNetCore.SignalR.Client.TS.Tests/Connection.spec.ts b/client-ts/Microsoft.AspNetCore.SignalR.Client.TS.Tests/Connection.spec.ts
index bfa3c9f9f4..335dc9ffc1 100644
--- a/client-ts/Microsoft.AspNetCore.SignalR.Client.TS.Tests/Connection.spec.ts
+++ b/client-ts/Microsoft.AspNetCore.SignalR.Client.TS.Tests/Connection.spec.ts
@@ -14,6 +14,13 @@ describe("Connection", () => {
             .toThrow(new Error("Cannot resolve '/test'."));
     });
 
+    it("cannot be created with relative url if window object is not present", () => {
+        (<any>global).window = {};
+        expect(() => new HttpConnection("/test"))
+            .toThrow(new Error("Cannot resolve '/test'."));
+        delete (<any>global).window;
+    });
+
     it("starting connection fails if getting id fails", async (done) => {
         let options: IHttpConnectionOptions = {
             httpClient: <IHttpClient>{
diff --git a/client-ts/Microsoft.AspNetCore.SignalR.Client.TS/HttpConnection.ts b/client-ts/Microsoft.AspNetCore.SignalR.Client.TS/HttpConnection.ts
index 733454c6e8..585815aba3 100644
--- a/client-ts/Microsoft.AspNetCore.SignalR.Client.TS/HttpConnection.ts
+++ b/client-ts/Microsoft.AspNetCore.SignalR.Client.TS/HttpConnection.ts
@@ -162,7 +162,7 @@ export class HttpConnection implements IConnection {
             return url;
         }
 
-        if (typeof window === 'undefined') {
+        if (typeof window === 'undefined' || !window || !window.document) {
             throw new Error(`Cannot resolve '${url}'.`);
         }