Wait until beforeSend header is returned before sending xhr request #467
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with the code of your PR commit, the beforeSend is still sync |
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@wayfarer3130 Can you please look at this? |
wayfarer3130
reviewed
Dec 1, 2022
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| let beforeSendHeaders = {}; | ||
| try{ | ||
| beforeSendHeaders = options.beforeSend( |
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This is still a synchronous call. This is also not the current version - there is an options.open method that runs before on line 23. Since this is already a promise, it should be easy to change this into an async function on line 4, then return the result directly down below.
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Yes it seems to be outdated base, @erasromani can you please rebase?
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In some cases, beforeSend method passes is asynchronous or returns a promise. For example, when the xhr request requires addition of an access token in the header and the retreival of the access token is done asynchronously, the beforeSend methos is therefore asynchronous. In this case, the current implementation does not wait for the header to be returned before sending the xhr request.