Recognize "localhost" as special and resolve to the loopback address. #4830
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Note: Only the last single commit "Recognize localhost before handing off to system" is new for this PR, the others are from #4827 that this PR depends on. |
This adds more combinations of parameters for LocalHost and SunnyDay PosixSocketResolveTest tests, including insuring that lookups work as expected with address family, socket type, and protocol hints. This will ensure that PosixSocketResolveTest will also detect systems where IPv6 localhost lookups don't work. b/369361511
Make SunnyDayFlags more forgiving, as well as the error return value for Starboard < 16 and be a little more forgiving for hint flags returned with the results.
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Removed on-device label. The only remaining failures were issues not related to this PR. |
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zhongqiliang
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johnxwork
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| struct sockaddr_in6* address = | ||
| reinterpret_cast<struct sockaddr_in6*>(musl_ai->ai_addr); | ||
| address->sin6_addr = IN6ADDR_LOOPBACK_INIT; | ||
| // address->sin6_addr.__in6_u.__u6_addr8[0] = 5; |
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Avoid using the system resolver to lookup localhost. This ensures that the application is free to use the localhost hostname and assume that both IPv4 and IPv6 adddress queries for localhost names will always resolve to the respective IP loopback address (https://datatracker.ietf.org/doc/html/rfc6761#section-6.3).
This fixes IPv6 localhost not resolving for devices where /etc/hosts is misconfigured.
b/369361511
b/377982714