Change #264314

Comments

hostip: resolve user supplied ip addresses
When a user supplied an ip address in a URL as hostname, use that even
when address family restrictions like -4 or -6 are set.

Add test_10_15/16 to verify with a local proxy server.

Fixes #21146
Reported-by: Terrance Wong

How:
- cf-dns: on see the hostname is an ip(v6) address, add the respective
  A/AAAA to the dns query bits
- cf-dns/hostip: only hand out addrinfos for a family if that family
  is part of the DNS queries. That prevents for example ipv6 addresses
  to show up from dns cache entries
- change cf-ip-happy to no longer check for "ip_version" and instead
  use all addresses that cf-dns hands out

Closes #21295

Changed files

• lib/cf-dns.c
• lib/cf-ip-happy.c
• lib/hostip.c
• tests/http/test_10_proxy.py
• tests/http/testenv/curl.py
• tests/http/testenv/httpd.py