Log URL with correct protocol in Net::HTTP requests

[amleaver]

Previously URLs were always logged with "http://" even if the connection was made over SSL. E.g.

Connecting: example.com:443
Sending: GET http://example.com:443/foo/bar/baz

use_ssl? is now checked when deciding what protocol to prefix the URL with.

Test are passing and tweak has been manually confirmed with an SSL connection:

bundle exec rspec spec --format=progress
2026-02-05 13:42:16 +0000 Thin web server (v2.0.1 codename Thinception)
2026-02-05 13:42:16 +0000 Maximum connections set to 1024
2026-02-05 13:42:16 +0000 Listening on 127.0.0.1:9292, CTRL+C to stop
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[Copilot]

Pull request overview

This PR fixes a bug where URLs were always logged with "http://" prefix even when connections were made over SSL. The fix checks the use_ssl? method to determine whether to use "https" or "http" as the protocol prefix.

Changes:

• Added a private protocol helper method that returns "https" or "http" based on the SSL connection state
• Updated URL construction to use the dynamic protocol instead of hardcoded "http://"

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[Copilot]

While the implementation is correct, there is currently no test coverage for HTTPS connections in the test suite. The shared examples in spec/support/shared_examples.rb:3 hardcode "http://" in the expected URL, and none of the test adapters create SSL connections. Consider adding test coverage for HTTPS scenarios to ensure this change works as expected and to prevent regressions.