theater/tendrils
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remove mdns dante node discovery

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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
This commit is contained in:
Ian Gulliver
2026-01-23 23:05:04 -08:00
parent 92040c832b
commit 604123559b
2 changed files with 2 additions and 77 deletions
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68
mdns.go
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@@ -14,30 +14,6 @@ const (
mdnsAddr = "224.0.0.251:5353"
)
func extractDanteName(s string) string {
var name string
for _, prefix := range []string{"._netaudio-", "._dante"} {
if idx := strings.Index(s, prefix); idx > 0 {
name = s[:idx]
break
}
}
if name == "" {
return ""
}
if at := strings.LastIndex(name, "@"); at >= 0 {
name = name[at+1:]
}
if strings.Contains(name, ".in-addr") {
return ""
}
return name
}
func isDanteService(s string) bool {
return strings.Contains(s, "_netaudio-") || strings.Contains(s, "._dante")
}
func isSkaarhojService(s string) bool {
return strings.Contains(s, "_skaarhoj._tcp")
}
@@ -109,8 +85,6 @@ func (t *Tendrils) processMDNSResponse(ifaceName string, srcIP net.IP, msg *dns.
aRecords := map[string]net.IP{}
srvTargets := map[string]string{}
danteNames := map[string]bool{}
danteARCPorts := map[string]uint16{}
skaarhojNames := map[string]bool{}
for _, rr := range allRecords {
@@ -121,12 +95,6 @@ func (t *Tendrils) processMDNSResponse(ifaceName string, srcIP net.IP, msg *dns.
case *dns.AAAA:
continue
case *dns.PTR:
if isDanteService(r.Hdr.Name) {
name := extractDanteName(r.Ptr)
if name != "" {
danteNames[name] = true
}
}
if isSkaarhojService(r.Ptr) {
name := extractSkaarhojName(r.Ptr)
if name != "" {
@@ -135,18 +103,6 @@ func (t *Tendrils) processMDNSResponse(ifaceName string, srcIP net.IP, msg *dns.
}
case *dns.SRV:
target := strings.TrimSuffix(r.Target, ".")
if isDanteService(r.Hdr.Name) {
name := extractDanteName(r.Hdr.Name)
if name != "" {
danteNames[name] = true
if target != "" {
srvTargets[name] = target
}
if strings.Contains(r.Hdr.Name, "_netaudio-arc.") && r.Port > 0 {
danteARCPorts[name] = r.Port
}
}
}
if isSkaarhojService(r.Hdr.Name) {
name := extractSkaarhojName(r.Hdr.Name)
if name != "" {
@@ -159,21 +115,6 @@ func (t *Tendrils) processMDNSResponse(ifaceName string, srcIP net.IP, msg *dns.
}
}
for name := range danteNames {
var ip net.IP
if target, ok := srvTargets[name]; ok {
ip = aRecords[target]
}
if ip == nil {
ip = aRecords[name+".local"]
}
if ip == nil {
ip = srcIP
}
arcPort := int(danteARCPorts[name])
t.nodes.UpdateDante(name, ip, arcPort)
}
for name := range skaarhojNames {
var ip net.IP
if target, ok := srvTargets[name]; ok {
@@ -188,7 +129,7 @@ func (t *Tendrils) processMDNSResponse(ifaceName string, srcIP net.IP, msg *dns.
t.nodes.Update(nil, nil, []net.IP{ip}, "", name, "skaarhoj")
}
if len(danteNames) == 0 && len(skaarhojNames) == 0 {
if len(skaarhojNames) == 0 {
for aName, ip := range aRecords {
hostname := strings.TrimSuffix(aName, ".local")
if hostname != "" && hostname != aName {
@@ -203,12 +144,7 @@ func (t *Tendrils) processMDNSResponse(ifaceName string, srcIP net.IP, msg *dns.
var mdnsServices = []string{
"_services._dns-sd._udp.local.",
"_netaudio-arc._udp.local.",
"_netaudio-cmc._udp.local.",
"_netaudio-dbc._udp.local.",
"_netaudio-chan._udp.local.",
"_dantevideo._udp.local.",
"_danteancil._udp.local.",
"_skaarhoj._tcp.local.",
}
func (t *Tendrils) runMDNSQuerier(ctx context.Context, iface net.Interface, conn *net.UDPConn) {