Underscore in header key

[crazyoptimist]

What's the purpose of replacing underscores with dashes? (a noob question)

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How can I preserve underscore in header key? I see it's happening here
I'm struggling to solve this issue because one of our 3rd party service endpoint needs injecting some headers and one of the header key has underscore!

[crazyoptimist]

In the nginx doc, they have on-off option for this, you can check it here
Similarly, can we make that configurable in this gem?
I can create a PR but this gem doesn't seem to be actively maintained...

[aaronmallen]

bump