Automatic lower-case for request headers breaks default .NET applications

[slaneyrw]

Microsoft's MVC framework uses a request header of "X-Requested-With" = "XMLHttpRequest" to determine whether a request is an "AJAX" request. jQuery also follow this paradigm.

The text plugin converts all headers to lower case, breaking the default detection mechanism.

Is there any reason why all headers are converted to lower case ?

[jrburke]

HTTP headers are supposed to be case-insensitive according to the RFCs for that part of the protocol, so it should not matter what the case is. If the casing is important for a particular server, you could use the onXhr hook to set the header manually:

https://github.com/requirejs/text#custom-xhr-hooks

[slaneyrw]

Then why be opinionated about casing. If people want lower case headers then supply a javascript object with lower case fields.