Add secure false, to allow HTTPS + proxy

[dwjohnston]

Please ensure that your pull request fulfills these requirements:

• The pull request is being made against the master branch
• Tests for the changes have been added (for bug fixes / features)

What is the purpose of this pull request? (bug fix, enhancement, new feature,...)

Allow using the proxy feature with HTTPS

#719

What changes did you make?

Set secure flag to false for http-proxy (so it won't try verify self signed certs).

• Question: Is the purpose of this library for development only? If not, this probably isn't a good solution.
• Possibly want a 'verifySslCerts' option, that you can set to false, for this use case.

Provide some example code that this change will affect, if applicable:

Starting a server with:

http-server --proxy https://localhost:8080? ./lib -S -C localhost.crt -K localhost.key -p 8080

Where we are using a selfsigned certificate.

Is there anything you'd like reviewers to focus on?

Please provide testing instructions, if applicable:

Run the above command, check that you can access the main page at https://localhost:8080/foobar

I haven't written any tests yet! Working that out now.

[dwjohnston]

I've tried adding tests here, but running into all sorts of issues: https://github.com/dwjohnston/http-server/tree/try-tests

[thornjad]

Thank you for your PR!

Question: Is the purpose of this library for development only? If so, this probably isn't a good solution.

While http-server has development usage as its primary goal, we do want to be strong enough for production applications as well. So I agree, just setting it to false might be a bit heavy-handed.

It's also possible this will be covered by #688?

[dwjohnston]

It's also possible this will be covered by #688?

Definitely looks like it is covered there.

[thornjad]

👍 Then I'm going to close this in favor of the more general #688