97 lines
2.1 KiB
Go
97 lines
2.1 KiB
Go
/*
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* Copyright (C) 2026 Fluxer Contributors
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*
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* This file is part of Fluxer.
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*
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* Fluxer is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Fluxer is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with Fluxer. If not, see <https://www.gnu.org/licenses/>.
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*/
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package dnswait
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import (
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"net"
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"time"
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)
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func ResolveA(host string) []string {
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var out []string
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addrs, err := net.LookupIP(host)
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if err != nil {
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return out
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}
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for _, addr := range addrs {
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if ip4 := addr.To4(); ip4 != nil {
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out = append(out, ip4.String())
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}
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}
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return out
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}
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func ResolveAAAA(host string) []string {
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var out []string
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addrs, err := net.LookupIP(host)
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if err != nil {
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return out
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}
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for _, addr := range addrs {
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if addr.To4() == nil {
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out = append(out, addr.String())
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}
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}
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return out
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}
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func contains(slice []string, item string) bool {
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for _, s := range slice {
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if s == item {
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return true
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}
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}
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return false
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}
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func WaitForDNS(livekitDomain, turnDomain, publicIPv4, publicIPv6 string, timeoutS, intervalS int) bool {
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if timeoutS < 1 {
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timeoutS = 1
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}
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if intervalS < 1 {
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intervalS = 1
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}
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deadline := time.Now().Add(time.Duration(timeoutS) * time.Second)
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for {
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a1 := ResolveA(livekitDomain)
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a2 := ResolveA(turnDomain)
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ok4 := contains(a1, publicIPv4) && contains(a2, publicIPv4)
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ok6 := true
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if publicIPv6 != "" {
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aaaa1 := ResolveAAAA(livekitDomain)
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aaaa2 := ResolveAAAA(turnDomain)
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ok6 = contains(aaaa1, publicIPv6) && contains(aaaa2, publicIPv6)
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}
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if ok4 && ok6 {
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return true
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}
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if time.Now().After(deadline) {
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return false
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}
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time.Sleep(time.Duration(intervalS) * time.Second)
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}
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}
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