December 2017
Intermediate to advanced
316 pages
6h 58m
English
Content preview from Building RESTful Web services with Go
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Cross-Origin Resource Sharing (CORS)
The most important application of this OPTIONS method is Cross-Origin Resource Sharing (CORS). Initially, browser security prevented the client from making cross-origin requests. It means a site loaded with the URL www.foo.com can only make API calls to that host. If the client code needs to request files or data from www.bar.com, then the second server, bar.com, should have a mechanism to recognize foo.com to get its resources.
This process explains the CORS:
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.