Issue #20686 has been updated by jhawthorn (John Hawthorn). Interestingly RFC2396_PARSER seems to allow nil for a host but not empty string, so the newer behaviour is at least more consistent. It does seem like we are missing some expected validation here though. ```
URI::HTTPS.new(nil, nil, "", nil, nil, nil, nil, nil, nil, URI::RFC2396_Parser.new, true) /Users/jhawthorn/.rubies/ruby-3.3.2/lib/ruby/3.3.0/uri/generic.rb:601:in `check_host': bad component(expected host component): (URI::InvalidComponentError) from /Users/jhawthorn/.rubies/ruby-3.3.2/lib/ruby/3.3.0/uri/generic.rb:640:in `host=' ...
URI::HTTPS.new(nil, nil, nil, nil, nil, nil, nil, nil, nil, URI::RFC2396_Parser.new, true) => #<URI::HTTPS >
----------------------------------------
Bug #20686: URI::HTTPS can build URI with blank, invalid host
https://bugs.ruby-lang.org/issues/20686#change-109469
* Author: ronricardo (Roniece Ricardo)
* Status: Open
* ruby -v: 3.4.0+
* Backport: 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN
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In Ruby 3.4.0+, calling `URI::HTTPS.build(host: "")` does not raise `URI::InvalidComponentError` as expected. Instead, it returns `#<URI::HTTPS https://>`
I think this was introduced in [this PR](https://github.com/ruby/uri/pull/90).
## Steps to Reproduce
### 1. Environment:
- **Ruby Version:** 3.4.0+
### 2. Steps:
- Open an IRB session.
- Run:
```ruby
URI::HTTPS.build(host: "")
### 3. Expected Behavior: - `URI::InvalidComponentError` should be raised due to the invalid empty `host` component. ### 4. Actual Behavior: - Returns `#<URI::HTTPS https://>` without raising an error. ### Ruby 3.1.4: ```ruby irb(main):008:0> RUBY_VERSION => "3.1.4" irb(main):009:0> URI::HTTPS.build(host:"") /home/vscode/.rbenv/versions/3.1.4/lib/ruby/3.1.0/uri/generic.rb:601:in `check_host': bad component(expected host component): (URI::InvalidComponentError) ``` ### Ruby 3.4.0: ```ruby irb(…):015> RUBY_VERSION => "3.4.0" irb(...):016> URI::HTTPS.build(host:"") => #<URI::HTTPS https://> ``` -- https://bugs.ruby-lang.org/