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Merge pull request #228 from Loyalsoldier/refine-dns-local-tlds

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DNS: refine local TLDs for localhost DNS
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Kslr 2020-09-26 23:22:18 +08:00 committed by GitHub
commit dea8b1e0c4
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1 changed files with 15 additions and 6 deletions
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21
app/dns/server.go
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@ -99,13 +99,22 @@ func New(ctx context.Context, config *Config) (*Server, error) {
address := endpoint.Address.AsAddress()
if address.Family().IsDomain() && address.Domain() == "localhost" {
server.clients = append(server.clients, NewLocalNameServer())
if len(ns.PrioritizedDomain) == 0 { // Priotize local domain with .local domain or without any dot to local DNS
ns.PrioritizedDomain = []*NameServer_PriorityDomain{
{Type: DomainMatchingType_Regex, Domain: "^[^.]*$"}, // This will only match domain without any dot
{Type: DomainMatchingType_Subdomain, Domain: "local"},
{Type: DomainMatchingType_Subdomain, Domain: "localdomain"},
}
// Priotize local domains with specific TLDs or without any dot to local DNS
// References:
// https://www.iana.org/assignments/special-use-domain-names/special-use-domain-names.xhtml
// https://unix.stackexchange.com/questions/92441/whats-the-difference-between-local-home-and-lan
localTLDsAndDotlessDomains := []*NameServer_PriorityDomain{
{Type: DomainMatchingType_Regex, Domain: "^[^.]+$"}, // This will only match domains without any dot
{Type: DomainMatchingType_Subdomain, Domain: "local"},
{Type: DomainMatchingType_Subdomain, Domain: "localdomain"},
{Type: DomainMatchingType_Subdomain, Domain: "localhost"},
{Type: DomainMatchingType_Subdomain, Domain: "lan"},
{Type: DomainMatchingType_Subdomain, Domain: "home.arpa"},
{Type: DomainMatchingType_Subdomain, Domain: "example"},
{Type: DomainMatchingType_Subdomain, Domain: "invalid"},
{Type: DomainMatchingType_Subdomain, Domain: "test"},
}
ns.PrioritizedDomain = append(ns.PrioritizedDomain, localTLDsAndDotlessDomains...)
} else if address.Family().IsDomain() && strings.HasPrefix(address.Domain(), "https+local://") {
// URI schemed string treated as domain
// DOH Local mode