Add HTTPS Proxy support

[richardmarbach]

net-http version 0.5.0 finally introduced TLS proxy support: ruby/net-http#55
https://github.com/ruby/net-http/releases/tag/v0.5.0

Since this change is breaking for older versions of net-http, I can also implement this in a backward compatible way.

[olleolleolle]

@richardmarbach Cool feature! To support this, perhaps we can make this gem depend on net-http version 0.5.0+?

[richardmarbach]

Hey @olleolleolle, thanks for checking so quickly! I've added the minimum runtime dependency for net-http

[olleolleolle]

Thanks, @richardmarbach!

[jonatasteixeira]

This version limitation creates an issue when gems are installed at runtime. The standard version is lower than the required one, leading to two different versions being loaded simultaneously. This causes the following error:

Unable to activate faraday-net_http-3.4.0, because net-http-0.4.1 conflicts with net-http (>= 0.5.0) (Gem::ConflictError)

The workaround was to keep using the previous version of faraday-net-http.

😄

[iMacTia]

@olleolleolle this is probably due to the add_runtime_dependency here.
I believe we have 2 options to address this:

1. Switch to add_dependency
2. Remove the version dependency and update the code to support both

The reason we didn't explicitly depend on net-http was that this would cause compatibility issues with the "stdlib" Net::HTTP bundled with Ruby. However, I believe this was removed in Ruby 3.0 and since we support only Ruby 3.0+ it should be safe to make this dependency more concrete now 👍

Would appreciate if you could double-check my claim here, I'm mostly going by memory and a quick Google Search 😄

[iMacTia]

This is also what we state in the gemspec, so I'd go with option 1 unless I'm missing something important?

[ekohl]

Switch to add_dependency

I don't think that makes a difference because https://guides.rubygems.org/specification-reference/#add_dependency states:

Also known as: add_runtime_dependency