Issue #20018 has been updated by mame (Yusuke Endoh). Status changed from Open to Closed https://github.com/ruby/ruby/pull/9018 was merged. Closing. ---------------------------------------- Feature #20018: Get the error codes as Socket::EAI_XXX when getaddrinfo and getnameinfo fail https://bugs.ruby-lang.org/issues/20018#change-105571 * Author: shioimm (Misaki Shioi) * Status: Closed * Priority: Normal ---------------------------------------- Feature for implementing Happy Eyeballs version 2 (RFC 8305) in `Socket.tcp`. ### Probrem I would like to implement Happy Eyeballs version 2 (RFC 8305) in `Socket.tcp`. In HEv2, `EAI_ADDRFAMILY` and `EAI_AGAIN` should be ignored when `getaddrinfoo` returns them in hostname resolution. However, there is currently no way to ask `SocketError` for errors returned by `getaddrinfo` ### Proposal I opened a PR to get errors when `getaddrinfo` and `getnameinfo` returns them. https://github.com/ruby/ruby/pull/9018 Todo this, - I added `Socket::ResolutionError` as a subclass of `SocketError` - I added an attribute of `Socket::ResolutionError` to get error code via `#error_code - I replaced `SocketError` (`rb_eSocket`) with `Socket::ResolutionError (`rb_eResolutionError`) in `rsock_raise_socket_error` because this function is only called when `getaddrinfo` and `getnameinfo` fail - I renamed `rsock_raise_socket_error` to `rock_raise_resolution_error` for the same reason In addition, `Socket::ResolutionError` is a subclass of `SocketError`, so it does not affect `rescue SocketError` in source codes. -- https://bugs.ruby-lang.org/