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Closes #2652

Description

See #2652 for details; this makes two changes:

  • When using the set_remote_address header: "header_name" functionality, if the header is not passed, REMOTE_ADDR is now set to the physical peeraddr instead of always being set to 127.0.0.1
  • When an error occurs preventing the physical peeraddr from being fetched, REMOTE_ADDR is now set to the unspecified source address ('0.0.0.0') instead of to '127.0.0.1'

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  • I have reviewed the guidelines for contributing to this repository.
  • I have added (or updated) appropriate tests if this PR fixes a bug or adds a feature.
  • My pull request is 100 lines added/removed or less so that it can be easily reviewed.
  • If this PR doesn't need tests (docs change), I added [ci skip] to the title of the PR.
  • If this closes any issues, I have added "Closes #issue" to the PR description or my commit messages.
  • I have updated the documentation accordingly.
  • All new and existing tests passed, including Rubocop.

@nateberkopec nateberkopec added feature waiting-for-review Waiting on review from anyone labels Jul 5, 2021
@nateberkopec nateberkopec added this to the 6.0.0 milestone Jul 5, 2021
@nateberkopec nateberkopec removed the waiting-for-review Waiting on review from anyone label Jul 5, 2021
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Had a think about it and I think both of these changes are an improvement. However, they both have the potential to break people's setups, so I think we need to park these until 6.0.

Your other option is to put one or both changes behind a temporary config option that we will remove in 6.0.

I don't have a lot of insight right now on whether or not the next release will be a minor or major, so no promises on how long this could stay parked.

Had one small concern about ipv6, see comment.

@nateberkopec nateberkopec added waiting-for-review Waiting on review from anyone and removed waiting-for-review Waiting on review from anyone labels Aug 12, 2021
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Removed waiting for review. This is only blocked on next major release.

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I'm thinking next release might be a major.

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Merged!

@dentarg
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dentarg commented Mar 7, 2022

Why not squash merging @nateberkopec ?

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Did it on the CLI and forgot 😆

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When remote_addr_header is used, but not passed, remote_addr defaults to localhost

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