[Android][Websockets] - Origin header check shouldn't be case sensitive #27827
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Summary: Based on [this](https://stackoverflow.com/a/5259004), header names are not case sensitive. That means that it's valid to pass a header `Origin` or `origin`. With the current implementation. on Android only, if you pass `Origin`, it will get overwritten by the default origin. This made me waste a lot of time debugging a problem while trying to connect to a websockets server that required an `origin` header and my implementation was working fine in iOS but not on Android, so I'm suggest changing the logic a little bit to take that into account. ## Changelog [Android] [Fixed] - Support for case insensitive "Origin" headers for Websockets Pull Request resolved: facebook#27827 Test Plan: Here's a screenshot of that shows the issue before the fix (`Origin` header set, but getting overridden)  The fix is not that easy to test since it requires a public websocket server that checks for a custom Origin header, but I think the code changes are very small and clear. Differential Revision: D19578860 Pulled By: cpojer fbshipit-source-id: d854e887d1b9e8e54da662b2da2ebe08ce65fdbc
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Summary
Based on this, header names are not case sensitive.
That means that it's valid to pass a header
Originororigin.With the current implementation. on Android only, if you pass
Origin, it will get overwritten by the default origin.This made me waste a lot of time debugging a problem while trying to connect to a websockets server that required an
originheader and my implementation was working fine in iOS but not on Android, so I'm suggest changing the logic a little bit to take that into account.Changelog
[Android] [Fixed] - Support for case insensitive "Origin" headers for Websockets
Test Plan
Here's a screenshot of that shows the issue before the fix (
Originheader set, but getting overridden)The fix is not that easy to test since it requires a public websocket server that checks for a custom Origin header, but I think the code changes are very small and clear.