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#523 ✓resolved
Michael Klishin (antares)

Make Request#remote_ip handle edge case with REMOTE_ADD being a comma-separated list

Reported by Michael Klishin (antares) | July 1st, 2008 @ 10:19 AM | in 2.x

I found out that Request#remote_ip fails with ArgumentError when REMOTE_ADDR is a comma-separated list.

In some particular cases with Nginx and some ISPs REMOTE_ADDR happens to be a comma-separated list of IP addresses so checking for local request passes a string with commas to and causes exceptions. Exception notifier plugin does such checks in production environment, for instance. Semantics of REMOTE_ADDR being a list is unclear and probably an edge case but it happens and is painful to track down.

This patch makes Request#remote_ip gracefully handle cases when REMOTE_ADDR is a comma-separated list of IPs.

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