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Merged
chemhack merged 1 commit into from
Feb 13, 2025
Merged

Restart mDNS every time the connection information changes #155

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21 changes: 18 additions & 3 deletions network.go
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Original file line number Diff line number Diff line change
Expand Up @@ -12,6 +12,8 @@ import (
"github.com/vishvananda/netlink/nl"
)

var mDNSConn *mdns.Conn

var networkState struct {
Up bool
IPv4 string
Expand Down Expand Up @@ -56,13 +58,26 @@ func checkNetworkState() {
}

if newState != networkState {
networkState = newState
fmt.Println("network state changed")
//restart MDNS
startMDNS()
networkState = newState
requestDisplayUpdate()
}
}

func startMDNS() error {
//If server was previously running, stop it
if mDNSConn != nil {
fmt.Printf("Stopping mDNS server\n")
err := mDNSConn.Close()
if err != nil {
fmt.Printf("failed to stop mDNS server: %v\n", err)
}
}

//Start a new server
fmt.Printf("Starting mDNS server on jetkvm.local\n")
addr4, err := net.ResolveUDPAddr("udp4", mdns.DefaultAddressIPv4)
if err != nil {
return err
Expand All @@ -83,10 +98,11 @@ func startMDNS() error {
return err
}

_, err = mdns.Server(ipv4.NewPacketConn(l4), ipv6.NewPacketConn(l6), &mdns.Config{
mDNSConn, err = mdns.Server(ipv4.NewPacketConn(l4), ipv6.NewPacketConn(l6), &mdns.Config{
LocalNames: []string{"jetkvm.local"}, //TODO: make it configurable
})
if err != nil {
mDNSConn = nil
return err
}
//defer server.Close()
Expand Down Expand Up @@ -122,7 +138,6 @@ func init() {
}
}
}()
fmt.Println("Starting mDNS server")
err := startMDNS()
if err != nil {
fmt.Println("failed to run mDNS: %v", err)
Expand Down