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ddascales..

Method to retrieve the request headers about to be sent

in Using jQuery • 6 years ago

The native XMLHttpRequest API doesn't have methods to get request headers. It would be useful to add one to the jqXHR object, to facilitate debugging and test automation.

User requests dating back from 2011:

http://stackoverflow.com/questions/7564007/get-sent-headers-in-an-xmlhttprequest

http://stackoverflow.com/questions/9102279/is-there-a-way-to-get-all-the-request-headers-in-a-jquery-ajax-call

... and "request headers" showing up in Google's autocomplete when searching for "jqXHR get".

Replies(3)

jakecigar

Re: Method to retrieve the request headers about to be sent

6 years ago

You could collect the headers in an array, and add them at the last second before you send the request.

JΛ̊KE

Re: Method to retrieve the request headers about to be sent

6 years ago

The place to request new features is not StackOverflow or this forum.

It's here:

https://github.com/jquery/jquery/issues

You could collect the headers in an array, and add them at the last second before you send the request.

While they are not in the jqXhr object, they are in the the settings passed to $.ajax(). That object is merged with the global settings from $.ajaxSetup() and so (probably) has the full list of headers that will be sent. Can that settings object be accessed?

Re: Method to retrieve the request headers about to be sent

6 years ago

@watusiware: Fine, filed at https://github.com/jquery/jquery/issues/1700 .

While $.ajaxSetup() or direct$.ajax() calls pass headers directly, a full-proof way to get request headers just before they're sent would need to take into consideration that headers can be added via beforeSend:

jqXHR.setRequestHeader('headerKey', headerValue);

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