Duplicated content-type on vanilla gateway about mappersmith HOT 3 CLOSED

Hi @ericholiveira, thanks for the report. Can you try to set your header to content-type, all in lowercase?

Maybe this (https://github.com/tulios/mappersmith/blob/master/src/gateway/vanilla-gateway.js#L124) is failing, this is definitely a bug, I'll take a look.

Thanks again.

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Ive tried with 'content-type' but still doenst work... actually i think the line of code you highlighted works... the problem is in _setContentTypeHeader you call request.setRequestHeader('Content-Type', contentType); which sets the correct content type... but on the next function call _setUserDefinedHeaders you are just setting all headers again (including content-type) and for this reason it duplicate this header. A simple filter on _setUserDefinedHeaders to avoid setting content-type again should do the trick.

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@ericholiveira This is a quick fix but it should work well. I'm planning a major refactor on mappersmith internals. Thanks again!

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