aiohttp_cors_basic_server_with_specific_origin_config.py

1import aiohttp.web
2import aiohttp_cors
3
4async def handler(request):
5    return aiohttp.web.Response(text="Hello, world")
6
7app = aiohttp.web.Application()
8
9# Create a CORS instance.
10cors = aiohttp_cors.setup(app)
11
12# Create a resource and a route.
13resource = app.router.add_resource("/hello")
14route = resource.add_route("GET", handler)
15
16# Configure CORS on that route.
17cors.add(route, {
18    "http://client.example.org": aiohttp_cors.ResourceOptions(
19        allow_credentials=True,
20        expose_headers="*",
21        allow_headers="*",
22    )
23})
24
25if __name__ == "__main__":
26    aiohttp.web.run_app(app)