19: Emscripten: add cors_serve.py

19/emscripten/Dockerfile

@@ -21,6 +21,7 @@ ENV PATH="/emsdk:/emsdk/upstream/emscripten:/emsdk/node/20.18.0_64bit/bin:$PATH"
 WORKDIR /ext/
 
 COPY build-depends.sh /ext/
+COPY cors_serve.py /usr/bin/
 
 # Build emscripten dependencies
 RUN bash build-depends.sh

19/emscripten/cors_serve.py

@@ -0,0 +1,12 @@
+#!/usr/bin/env python3
+from http.server import HTTPServer, SimpleHTTPRequestHandler, test
+import sys
+
+class CORSRequestHandler (SimpleHTTPRequestHandler):
+    def end_headers (self):
+        self.send_header('Cross-Origin-Embedder-Policy', 'require-corp')
+        self.send_header('Cross-Origin-Opener-Policy', 'same-origin')
+        SimpleHTTPRequestHandler.end_headers(self)
+
+def main():
+    test(CORSRequestHandler, HTTPServer, port=int(sys.argv[1]) if len(sys.argv) > 1 else 8000)