Set Origin HTTP header during CORS (#10700)

* Set Origin HTTP header during CORS * Change files
microsoft · Dec 7, 2022 · 4d279cd · 4d279cd
1 parent d248920
commit 4d279cd
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diff --git a/change/react-native-windows-8769dfac-39b4-4cfc-88ae-91a5456390a2.json b/change/react-native-windows-8769dfac-39b4-4cfc-88ae-91a5456390a2.json
@@ -0,0 +1,7 @@
+{
+  "type": "prerelease",
+  "comment": "Set Origin HTTP header during CORS",
+  "packageName": "react-native-windows",
+  "email": "julio.rocha@microsoft.com",
+  "dependentChangeType": "patch"
+}
diff --git a/vnext/Shared/Networking/OriginPolicyHttpFilter.cpp b/vnext/Shared/Networking/OriginPolicyHttpFilter.cpp
@@ -754,6 +754,11 @@ ResponseOperation OriginPolicyHttpFilter::SendRequestAsync(HttpRequestMessage co
       ValidatePreflightResponse(coRequest, preflightResponse);
     }
 
+    if (originPolicy == OriginPolicy::SimpleCrossOriginResourceSharing ||
+        originPolicy == OriginPolicy::CrossOriginResourceSharing) {
+      coRequest.Headers().Insert(L"Origin", s_origin.AbsoluteCanonicalUri());
+    }
+
     auto response = co_await m_innerFilter.SendRequestAsync(coRequest);
 
     ValidateResponse(response, originPolicy);