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6dfcbb6282Ruby 3.4 shipped support for happy eyeballs in `Socket.tcp` and `TCPSocket`. However, our `FinalDestination::HTTP` wrapper was performing a DNS lookup and passing IP addresses one at a time when opening the socket. That meant that we didn't benefit from the new Ruby feature in most Discourse features. This commit factors the strategy. Now, `FinalDestination::HTTP` encodes the DNS result and passes it to the underlying implementation as a fake hostname string. A patch to `Addrinfo` detects this fake hostname and returns the given IPs instead of performing its own lookup. For this Addrinfo patch to work, we also had to patch `TCPSocket` so that it uses the ruby-based `Socket.tcp` rather than its native C socket-opening code. The result is that we now get the benefit of the native Ruby 'Happy Eyeballs' support for concurrent ipv4 and ipv6 connections. All this patching of low-level ruby classes is not ideal, but there is no native way to control name resolution in `Net::HTTP` or its dependencies. |
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| connector.rb | ||
| faraday_adapter.rb | ||
| http.rb | ||
| resolver.rb | ||
| ssrf_detector.rb | ||
