My situation is a bit similar to this question but it differs a bit nor there is an answer. My backend is python and front-end is Angular. Live sever is Ngnix/Unix while dev is Windows. Every request just sends OPTIONS request, with successful response of 200 but then GET/POST are not followed. It was working perfectly fine and only on production sever is it not working. There are no CORS errors in the console and backend is debug= True for checking purposes but not problems so far cos obviously no get/post is being made. On development machine, all is working. Previous team had added a custom header 'language': const clonedRequest = req.clone({ headers: req.headers.set('Language', lang) }); which I noticed is never sent when connected to the live one. In the development setup, I see the following headers: Accept application/json Accept-Encoding gzip, deflate Accept-Language en-US,en;q=0.5 Connection keep-alive Content-Length 21 Content-Type application/json Host 127.0.0.1:9000 Language en Origin http://localhost:4800 Referer http://localhost:4800/start/forgot-pwd When connecting to the production from front end (Development or in production), the Language header is not being sent but I doubt it has issues. Regardless, my CORS on the backend looks like this: CORS_ALLOW_HEADERS = ( 'accept', 'accept-encoding', 'authorization', 'content-type', 'dnt', 'origin', 'user-agent', 'language', 'x-requested-with', ) Continue reading...
