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Vincent Cheung
1df8bd4932
Summary: Multiple `set-cookie` headers should be aggregated as one `set-cookie` with values in a comma separated list. It is working as expected on iOS but not on Android. On Android, only the last one is preserved The problem arises because `NetworkingModule.translateHeaders()` uses `WritableNativeMap` as the translated headers but uses both native and non-native methods. The mixup causes out of sync data that both sets of methods do no agree. A simple fix is to use `Bundle` as the storage and only convert it to `WritableMap` at the end in one go Related issues: https://github.com/facebook/react-native/issues/26280, https://github.com/facebook/react-native/issues/21795, https://github.com/facebook/react-native/issues/23185 ## Changelog [Android] [Fixed] - Fix multiple headers of the same name (e.g. `set-cookie`) not aggregated correctly Pull Request resolved: https://github.com/facebook/react-native/pull/27066 Test Plan: A mock api, https://demo6524373.mockable.io/, will return 2 `set-cookie` as follows: ``` set-cookie: cookie1=value1 set-cookie: cookie2=value2 ``` Verify the following will print the `set-cookie` with a value `cookie1=value1, cookie2=value2` ```javascript fetch('https://demo6524373.mockable.io/') .then(response => { console.log(response.headers); }); ``` On iOS, `set-cookie` will have `cookie1=value1, cookie2=value2` while on Android it will have `cookie2=value2` (preserving only the last one) Differential Revision: D18298933 Pulled By: cpojer fbshipit-source-id: ce53cd41d7c6de0469700617900f30a7d0914c26