// destroy GRE tunnel
func destroy(tun *gretun.Tunnel) {
if tun.Destroy() {
log.Println("GRE Tunnel destroyed.")
} else {
log.Println("Failed destroying GRE Tunnel.")
}
}
// register at server and create GRE tunnel
func register(tun *gretun.Tunnel) {
log.Println("Requesting GRE IP from server ..")
var greIp net.IP = nil
statusCode, body := httpReq("http://" + serverIp + ":8080/reg")
if statusCode != 0 {
log.Printf("Response: %d (%s): %s\n", statusCode, http.StatusText(statusCode), body)
greIp = net.ParseIP(string(body))
}
if greIp != nil {
tun.CGreIp = greIp
if tun.Create() {
log.Println("GRE Tunnel created.")
} else {
log.Println("Failed creating GRE Tunnel.")
}
} else {
log.Fatalln("Did not get a GRE IP address from server.")
}
}
// unsets remote IP to free GRE IP
func (tunList *TunList) free(tun *gretun.Tunnel) {
tun.RemoteIp = nil
}