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Add explicit support for localhost DNS lookup #22641

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@sbc100 sbc100 commented Sep 26, 2024

This change also includes a few micro-optimizations for the DNS helpers.

Fixes: #22633

This change also includes a few micro-optimizations for the DNS helpers.

Fixes: emscripten-core#22633
res = inetPton6(name);
if (res !== null) {
// Unlike the inetPton4 above we don't need and explict null comparison
// here since there are no valie v6 addresses that are falsey.
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Suggested change
// here since there are no valie v6 addresses that are falsey.
// here since there are no valid v6 addresses that are falsey.

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getaddrinfo behaves differently with loopback address
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