dnsResolver

Resolves a hostname to a list of IP address strings used to establish connections. When null, the platform's default name service is used.

Bypassed for proxied requests and Unix domain sockets. TLS SNI keeps using the original hostname, so resolving to an IP does not break certificate validation.

An empty result fails the connection with FailToConnectException. Currently only the first address is used; multi-address fallback is left to a follow-up.

HttpClient(CIO) {
    engine {
        dnsResolver = { hostname -> listOf("127.0.0.1") }
    }
}

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