Allow sending correct public name in autodiscovery

bootserver/config/config.go

@@ -52,6 +52,7 @@ type jsonConf struct {
 		Port       int    `json:"port"`
 		Mode       string `json:"mode"`
 		SockPath   string `json:"sock"`
+		PublicHost string `json:"public_host"`
 	} `json:"server"`
 	BootProvider struct {
 		Iface      string `json:"interface"`
@@ -67,6 +68,7 @@ type AppConfig struct {
 	DataFilepath  string
 	StaticDir     string
 	Host          string
+	PublicHost    string
 	Port          int
 	SockPath      string
 	UPDMcastGroup string
@@ -98,6 +100,7 @@ func (ac *AppConfig) UnmarshalJSON(data []byte) error {
 	ac.ServerMode = lm
 	ac.SockPath = jsonConf.Server.SockPath
 	ac.Host = jsonConf.Server.Host
+	ac.PublicHost = jsonConf.Server.PublicHost
 	ac.Port = jsonConf.Server.Port
 	ac.UPDMcastGroup = jsonConf.BootProvider.McastGroup
 	ac.UDPIface = jsonConf.BootProvider.Iface
@@ -113,6 +116,7 @@ var defaultConfig AppConfig = AppConfig{
 	ServerMode:    ModeNet,
 	DataFilepath:  "boot_options.json",
 	Host:          "0.0.0.0",
+	PublicHost:    "http://127.0.0.1:5000",
 	Port:          5000,
 	UPDMcastGroup: "ff02::abcd:1234",
 	UDPPort:       42,

bootserver/udplistener/udplistener.go

@@ -28,7 +28,7 @@ type discoveryPayload struct {
 
 func payloadFromConfig(conf config.AppConfig) discoveryPayload {
 	return discoveryPayload{
-		ManagementAddress: conf.Host,
+		ManagementAddress: conf.PublicHost,
 		Version:           "1",
 	}
 }