We give the URI.parse result as Net::HTTP.get argument.
If we provide IPv6 address into URI.parse,
Net::HTTP.get causes URI::InvalidComponentError since uri v1.1.0.
Reroduce code
require 'bundler/inline'
gemfile do
source 'https://rubygems.org'
gem 'uri', '= 1.1.0'
# gem 'uri', '= 1.0.4'
gem 'webrick'
end
require 'net/http'
PORT = 24447
Thread.new do
server = WEBrick::HTTPServer.new(Port: PORT)
trap 'INT' do
server.shutdown
end
puts "WEBrick server running on http://localhost:#{PORT}"
server.start
end
sleep 0.2
puts "=== uri gem version ==="
puts URI::VERSION
puts "=== Use IPv4 localhost ==="
localhost = "localhost"
p URI.parse("http://#{localhost}:#{PORT}/api/plugins.flushBuffers")
p Net::HTTP.get(URI.parse("http://#{localhost}:#{PORT}/api/plugins.flushBuffers"))
puts "=== Use IPv6 localhost ==="
localhost = "[::1]"
p URI.parse("http://#{localhost}:#{PORT}/api/plugins.flushBuffers")
p Net::HTTP.get(URI.parse("http://#{localhost}:#{PORT}/api/plugins.flushBuffers"))Result with uri 1.1.0
It causes URI::InvalidComponentError with uri 1.1.0.
$ ruby -v uri.rb
ruby 3.4.7 (2025-10-08 revision 7a5688e2a2) +PRISM [x86_64-linux]
[2025-11-04 20:21:57] INFO WEBrick 1.9.1
[2025-11-04 20:21:57] INFO ruby 3.4.7 (2025-10-08) [x86_64-linux]
WEBrick server running on http://localhost:24447
[2025-11-04 20:21:57] INFO WEBrick::HTTPServer#start: pid=660980 port=24447
=== uri gem version ===
1.1.0
=== Use IPv4 localhost ===
#<URI::HTTP http://localhost:24447/api/plugins.flushBuffers>
[2025-11-04 20:21:57] ERROR '/api/plugins.flushBuffers' not found.
::1 - - [04/Nov/2025:20:21:57 JST] "GET /api/plugins.flushBuffers HTTP/1.1" 404 295
- -> /api/plugins.flushBuffers
"<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.0//EN\">\n<HTML>\n <HEAD><TITLE>Not Found</TITLE></HEAD>\n <BODY>\n <H1>Not Found</H1>\n '/api/plugins.flushBuffers' not found.\n <HR>\n <ADDRESS>\n WEBrick/1.9.1 (Ruby/3.4.7/2025-10-08) at\n localhost:24447\n </ADDRESS>\n </BODY>\n</HTML>\n"
=== Use IPv6 localhost ===
#<URI::HTTP http://[::1]:24447/api/plugins.flushBuffers>
[2025-11-04 20:21:57] INFO going to shutdown ...
[2025-11-04 20:21:57] INFO WEBrick::HTTPServer#start done.
/home/watson/.rbenv/versions/3.4.7/lib/ruby/gems/3.4.0/gems/uri-1.1.0/lib/uri/http.rb:69:in 'URI::HTTP#check_host': bad component(expected host component): (URI::InvalidComponentError)
from /home/watson/.rbenv/versions/3.4.7/lib/ruby/gems/3.4.0/gems/uri-1.1.0/lib/uri/generic.rb:653:in 'URI::Generic#host='
from /home/watson/.rbenv/versions/3.4.7/lib/ruby/3.4.0/net/http/generic_request.rb:230:in 'Net::HTTPGenericRequest#update_uri'
from /home/watson/.rbenv/versions/3.4.7/lib/ruby/3.4.0/net/http.rb:2475:in 'Net::HTTP#begin_transport'
from /home/watson/.rbenv/versions/3.4.7/lib/ruby/3.4.0/net/http.rb:2404:in 'Net::HTTP#transport_request'
from /home/watson/.rbenv/versions/3.4.7/lib/ruby/3.4.0/net/http.rb:2378:in 'Net::HTTP#request'
from /home/watson/.rbenv/versions/3.4.7/lib/ruby/3.4.0/net/http.rb:2249:in 'Net::HTTP#request_get'
from /home/watson/.rbenv/versions/3.4.7/lib/ruby/3.4.0/net/http.rb:826:in 'block in Net::HTTP.get_response'
from /home/watson/.rbenv/versions/3.4.7/lib/ruby/3.4.0/net/http.rb:1626:in 'Net::HTTP#start'
from /home/watson/.rbenv/versions/3.4.7/lib/ruby/3.4.0/net/http.rb:1064:in 'Net::HTTP.start'
from /home/watson/.rbenv/versions/3.4.7/lib/ruby/3.4.0/net/http.rb:824:in 'Net::HTTP.get_response'
from /home/watson/.rbenv/versions/3.4.7/lib/ruby/3.4.0/net/http.rb:805:in 'Net::HTTP.get'
from uri.rb:38:in '<main>'
Expected (with uri 1.0.4)
No exception with uri 1.0.4
$ ruby -v uri.rb
ruby 3.4.7 (2025-10-08 revision 7a5688e2a2) +PRISM [x86_64-linux]
[2025-11-04 20:22:48] INFO WEBrick 1.9.1
[2025-11-04 20:22:48] INFO ruby 3.4.7 (2025-10-08) [x86_64-linux]
WEBrick server running on http://localhost:24447
[2025-11-04 20:22:48] INFO WEBrick::HTTPServer#start: pid=661911 port=24447
=== uri gem version ===
1.0.4
=== Use IPv4 localhost ===
#<URI::HTTP http://localhost:24447/api/plugins.flushBuffers>
[2025-11-04 20:22:48] ERROR '/api/plugins.flushBuffers' not found.
::1 - - [04/Nov/2025:20:22:48 JST] "GET /api/plugins.flushBuffers HTTP/1.1" 404 295
- -> /api/plugins.flushBuffers
"<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.0//EN\">\n<HTML>\n <HEAD><TITLE>Not Found</TITLE></HEAD>\n <BODY>\n <H1>Not Found</H1>\n '/api/plugins.flushBuffers' not found.\n <HR>\n <ADDRESS>\n WEBrick/1.9.1 (Ruby/3.4.7/2025-10-08) at\n localhost:24447\n </ADDRESS>\n </BODY>\n</HTML>\n"
=== Use IPv6 localhost ===
#<URI::HTTP http://[::1]:24447/api/plugins.flushBuffers>
[2025-11-04 20:22:48] ERROR '/api/plugins.flushBuffers' not found.
::1 - - [04/Nov/2025:20:22:48 JST] "GET /api/plugins.flushBuffers HTTP/1.1" 404 283
"<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.0//EN\">\n<HTML>\n <HEAD><TITLE>Not Found</TITLE></HEAD>\n <BODY>\n <H1>Not Found</H1>\n '/api/plugins.flushBuffers' not found.\n <HR>\n <ADDRESS>\n WEBrick/1.9.1 (Ruby/3.4.7/2025-10-08) at\n :80\n </ADDRESS>\n </BODY>\n</HTML>\n"
- -> /api/plugins.flushBuffers
[2025-11-04 20:22:48] INFO going to shutdown ...
[2025-11-04 20:22:48] INFO WEBrick::HTTPServer#start done.
We give the
URI.parseresult asNet::HTTP.getargument.If we provide IPv6 address into
URI.parse,Net::HTTP.getcausesURI::InvalidComponentErrorsince uri v1.1.0.Reroduce code
Result with uri 1.1.0
It causes URI::InvalidComponentError with uri 1.1.0.
Expected (with uri 1.0.4)
No exception with uri 1.0.4