Ruby 3.4 URI module compatibility

Author: michaelklishin

lib/amq/uri.rb

@@ -34,7 +34,7 @@ def self.parse(connection_string)
       opts[:scheme] = uri.scheme
       opts[:user]   = ::CGI::unescape(uri.user) if uri.user
       opts[:pass]   = ::CGI::unescape(uri.password) if uri.password
-      opts[:host]   = uri.host if uri.host
+      opts[:host]   = uri.host if uri.host and uri.host != ""
       opts[:port]   = uri.port || AMQP_DEFAULT_PORTS[uri.scheme]
       opts[:ssl]    = uri.scheme.to_s.downcase =~ /amqps/i # TODO: rename to tls
       if uri.path =~ %r{^/(.*)}

spec/amq/uri_parsing_spec.rb

@@ -30,7 +30,7 @@
           let(:uri) { "amqp://" }
 
           # Note that according to the ABNF, the host component may not be absent, but it may be zero-length.
-          it "falls back to default nil host" do
+          it "falls back to a blank value" do
             expect(subject[:host]).to be_nil
           end
         end