Created
April 28, 2017 18:45
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cors middleware for asyncio
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| from aiohttp import web | |
| web.Application(middlewares=[cors_factory]) | |
| ALLOWED_HEADERS = ','.join(( | |
| 'content-type', | |
| 'accept', | |
| 'origin', | |
| 'authorization', | |
| 'x-requested-with', | |
| 'x-csrftoken', | |
| )) | |
| def set_cors_headers (request, response): | |
| response.headers['Access-Control-Allow-Origin'] = request.headers.get('Origin', '*') | |
| response.headers['Access-Control-Allow-Methods'] = request.method | |
| response.headers['Access-Control-Allow-Headers'] = ALLOWED_HEADERS | |
| response.headers['Access-Control-Allow-Credentials'] = 'true' | |
| return response | |
| @asyncio.coroutine | |
| def cors_factory (app, handler): | |
| @asyncio.coroutine | |
| def cors_handler (request): | |
| # preflight requests | |
| if request.method == 'OPTIONS': | |
| return set_cors_headers(request, web.Response()) | |
| else: | |
| response = yield from handler(request) | |
| return set_cors_headers(request, response) | |
| return cors_handler |
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