Requests to an IPv6 address result in: HTTP::ConnectionError (failed to connect: getaddrinfo: Name or service not known) #730
Description
I'm trying to use http.rb to make GET requests to IPv6 addresses and always get the following error:
HTTP::ConnectionError (failed to connect: getaddrinfo: Name or service not known)
I've tried with and without brackets around the IP address and the results are the same. (I'd expect the version without brackets to fail, so that by itself isn't a problem. More detail on why I'm even trying a bracket-less version below.)
Interestingly, making a request to the exact same URL with httparty succeeds when using the bracketed form.
Here is a demonstration of what I see using the IPv6 address for example.com (2606:2800:220:1:248:1893:25c8:1946):
http.rb without brackets:
irb(main):177:0> HTTP.get("http://2606:2800:220:1:248:1893:25c8:1946/foo?bar=baz")
Traceback (most recent call last):
15: from script/rails:6:in `<main>'
14: from script/rails:6:in `require'
13: from /redacted/vendor/bundle/ruby/2.6.0/gems/railties-3.2.22.30/lib/rails/commands.rb:41:in `<top (required)>'
12: from /redacted/vendor/bundle/ruby/2.6.0/gems/railties-3.2.22.30/lib/rails/commands/console.rb:8:in `start'
11: from /redacted/vendor/bundle/ruby/2.6.0/gems/railties-3.2.22.30/lib/rails/commands/console.rb:47:in `start'
10: from (irb):177
9: from /redacted/vendor/bundle/ruby/2.6.0/gems/http-3.3.0/lib/http/chainable.rb:20:in `get'
8: from /redacted/vendor/bundle/ruby/2.6.0/gems/http-3.3.0/lib/http/chainable.rb:77:in `request'
7: from /redacted/vendor/bundle/ruby/2.6.0/gems/http-3.3.0/lib/http/client.rb:30:in `request'
6: from /redacted/vendor/bundle/ruby/2.6.0/gems/http-3.3.0/lib/http/client.rb:67:in `perform'
5: from /redacted/vendor/bundle/ruby/2.6.0/gems/http-3.3.0/lib/http/client.rb:67:in `new'
4: from /redacted/vendor/bundle/ruby/2.6.0/gems/http-3.3.0/lib/http/connection.rb:43:in `initialize'
3: from /redacted/vendor/bundle/ruby/2.6.0/gems/http-3.3.0/lib/http/timeout/null.rb:21:in `connect'
2: from /redacted/vendor/bundle/ruby/2.6.0/gems/http-3.3.0/lib/http/timeout/null.rb:21:in `open'
1: from /redacted/vendor/bundle/ruby/2.6.0/gems/http-3.3.0/lib/http/timeout/null.rb:21:in `initialize'
HTTP::ConnectionError (failed to connect: getaddrinfo: Name or service not known)
http.rb with brackets:
irb(main):178:0> HTTP.get("http://[2606:2800:220:1:248:1893:25c8:1946]/foo?bar=baz")
Traceback (most recent call last):
16: from script/rails:6:in `<main>'
15: from script/rails:6:in `require'
14: from /redacted/vendor/bundle/ruby/2.6.0/gems/railties-3.2.22.30/lib/rails/commands.rb:41:in `<top (required)>'
13: from /redacted/vendor/bundle/ruby/2.6.0/gems/railties-3.2.22.30/lib/rails/commands/console.rb:8:in `start'
12: from /redacted/vendor/bundle/ruby/2.6.0/gems/railties-3.2.22.30/lib/rails/commands/console.rb:47:in `start'
11: from (irb):178
10: from (irb):178:in `rescue in irb_binding'
9: from /redacted/vendor/bundle/ruby/2.6.0/gems/http-3.3.0/lib/http/chainable.rb:20:in `get'
8: from /redacted/vendor/bundle/ruby/2.6.0/gems/http-3.3.0/lib/http/chainable.rb:77:in `request'
7: from /redacted/vendor/bundle/ruby/2.6.0/gems/http-3.3.0/lib/http/client.rb:30:in `request'
6: from /redacted/vendor/bundle/ruby/2.6.0/gems/http-3.3.0/lib/http/client.rb:67:in `perform'
5: from /redacted/vendor/bundle/ruby/2.6.0/gems/http-3.3.0/lib/http/client.rb:67:in `new'
4: from /redacted/vendor/bundle/ruby/2.6.0/gems/http-3.3.0/lib/http/connection.rb:43:in `initialize'
3: from /redacted/vendor/bundle/ruby/2.6.0/gems/http-3.3.0/lib/http/timeout/null.rb:21:in `connect'
2: from /redacted/vendor/bundle/ruby/2.6.0/gems/http-3.3.0/lib/http/timeout/null.rb:21:in `open'
1: from /redacted/vendor/bundle/ruby/2.6.0/gems/http-3.3.0/lib/http/timeout/null.rb:21:in `initialize'
HTTP::ConnectionError (failed to connect: getaddrinfo: Name or service not known)
httparty without brackets:
irb(main):179:0> HTTParty.get("http://2606:2800:220:1:248:1893:25c8:1946/foo?bar=baz")
Traceback (most recent call last):
16: from script/rails:6:in `<main>'
15: from script/rails:6:in `require'
14: from /redacted/vendor/bundle/ruby/2.6.0/gems/railties-3.2.22.30/lib/rails/commands.rb:41:in `<top (required)>'
13: from /redacted/vendor/bundle/ruby/2.6.0/gems/railties-3.2.22.30/lib/rails/commands/console.rb:8:in `start'
12: from /redacted/vendor/bundle/ruby/2.6.0/gems/railties-3.2.22.30/lib/rails/commands/console.rb:47:in `start'
11: from (irb):179
10: from (irb):179:in `rescue in irb_binding'
9: from /redacted/vendor/bundle/ruby/2.6.0/gems/httparty-0.16.2/lib/httparty.rb:601:in `get'
8: from /redacted/vendor/bundle/ruby/2.6.0/gems/httparty-0.16.2/lib/httparty.rb:489:in `get'
7: from /redacted/vendor/bundle/ruby/2.6.0/gems/httparty-0.16.2/lib/httparty.rb:563:in `perform_request'
6: from /redacted/vendor/bundle/ruby/2.6.0/gems/httparty-0.16.2/lib/httparty.rb:563:in `new'
5: from /redacted/vendor/bundle/ruby/2.6.0/gems/httparty-0.16.2/lib/httparty/request.rb:63:in `initialize'
4: from /redacted/vendor/bundle/ruby/2.6.0/gems/httparty-0.16.2/lib/httparty/request.rb:73:in `path='
3: from /opt/rubies/ruby-2.6/lib/ruby/2.6.0/uri/common.rb:234:in `parse'
2: from /opt/rubies/ruby-2.6/lib/ruby/2.6.0/uri/rfc3986_parser.rb:73:in `parse'
1: from /opt/rubies/ruby-2.6/lib/ruby/2.6.0/uri/rfc3986_parser.rb:67:in `split'
URI::InvalidURIError (bad URI(is not URI?): "http://2606:2800:220:1:248:1893:25c8:1946/foo?bar=baz")
httparty with brackets:
irb(main):180:0> HTTParty.get("http://[2606:2800:220:1:248:1893:25c8:1946]/foo?bar=baz")
=> #<HTTParty::Response:0x7f257239b888 parsed_response="<?xml version=\"1.0\" encoding=\"iso-8859-1\"?>\n<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\"\n \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">\n<html xmlns=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\" lang=\"en\">\n\t<head>\n\t\t<title>404 - Not Found</title>\n\t</head>\n\t<body>\n\t\t<h1>404 - Not Found</h1>\n\t</body>\n</html>\n", @response=#<Net::HTTPNotFound 404 Not Found readbody=true>, @headers={"content-type"=>["text/html"], "date"=>["Sat, 19 Nov 2022 01:56:17 GMT"], "server"=>["ECS (dab/DC47)"], "content-length"=>["345"], "connection"=>["close"]}>
I realize I'm using old versions of both HTTP libraries as well as Rails (working with a large corporate codebase that's very outdated), but I've also tried this with http.rb v5 in a Pry session outside of the context of this project, and the same error occurs.
Normally I would just use httparty, because it works, but unfortunately I can't because of a bad interaction between httparty and the newrelic_rpm gem. Apparently Net::HTTP needs brackets removed from IPv6 addresses, so httparty has some code that intentionally removes the brackets before handing off the request to Net::HTTP. At this point, New Relic instrumentation hooks into the request, attempts to re-parse the URL using the addressable gem, and raises an exception because it requires brackets around IPv6 addresses. None of this is http.rb's fault, I'm just mentioning it for the context as to why I'm trying use http.rb in the first place. I wanted to try something that doesn't use Net::HTTP under the hood so that there's no conflict in support for brackets around IPv6 addresses. I see that both http.rb and newrelic_rpm use the addressable gem for URLs, so they should be compatible.
Any idea why I'm getting this error from http.rb? I wasn't able to find documentation or issues that specifically mention IPv6 to see examples of how it's supposed to work or how to troubleshoot.
Thank you for your time.