CORS is a W3C working standard that currently has decent (but inconsistent) implementions in Firefox, Chrome and Safari. I use it primarily to test PhoneGap apps in regular browsers instead of testing the code in simulators. PhoneGap apps can skip the usual origin checks via configuration, but running a PhoneGap app takes more setup - which make it harder for designers to work with the app. Running apps in simulators or on actual devices also takes al lot more time that just reloading a browser and this annoys me.
Read up on CORS
- “W3C CORS working draft”:http://www.w3.org/TR/cors/
- “Wikipedia CORS article”:https://en.wikipedia.org/wiki/Cross-origin_resource_sharing
The nginx configuration
# # Wide-open CORS config for nginx # location / { if ($request_method = 'OPTIONS') { add_header 'Access-Control-Allow-Origin' '*'; # # Om nom nom cookies # add_header 'Access-Control-Allow-Credentials' 'true'; add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS'; # # Custom headers and headers various browsers *should* be OK with but aren't # add_header 'Access-Control-Allow-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type'; # # Tell client that this pre-flight info is valid for 20 days # add_header 'Access-Control-Max-Age' 1728000; add_header 'Content-Type' 'text/plain charset=UTF-8'; add_header 'Content-Length' 0; return 204; } if ($request_method = 'POST') { add_header 'Access-Control-Allow-Origin' '*'; add_header 'Access-Control-Allow-Credentials' 'true'; add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS'; add_header 'Access-Control-Allow-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type'; } if ($request_method = 'GET') { add_header 'Access-Control-Allow-Origin' '*'; add_header 'Access-Control-Allow-Credentials' 'true'; add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS'; add_header 'Access-Control-Allow-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type'; } }