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73 lines
1.4 KiB
73 lines
1.4 KiB
package config
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import (
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"fmt"
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"net"
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"os"
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)
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type Config struct {
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DeviceName string
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Port string
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LocalIP string
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MulticastAddress string
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WildcardAddress string
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FilePath string
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Version string
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}
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var G Config
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func (c *Config) SetConf(port string) error {
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Hostname, err := os.Hostname()
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if err != nil {
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Hostname = "unknow device"
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}
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// 设备名称
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c.DeviceName = Hostname
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c.Port = port
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c.LocalIP, err = getLocalIP()
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if err != nil {
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return err
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}
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// 多播地址
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c.MulticastAddress = fmt.Sprintf("224.0.0.169:%s", port)
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// 广播地址
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c.WildcardAddress = fmt.Sprintf("0.0.0.0:%s", port)
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c.FilePath = "./"
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c.Version = "0.3.0"
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return nil
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}
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// 本地ip
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func getLocalIP() (string, error) {
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addrs, err := net.InterfaceAddrs()
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if err != nil {
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return "", err
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}
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var ips []string
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for _, address := range addrs {
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if ipnet, ok := address.(*net.IPNet); ok && !ipnet.IP.IsLoopback() {
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if ipnet.IP.To4() != nil {
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ips = append(ips, ipnet.IP.String())
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}
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}
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}
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if len(ips) == 0 {
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return "", fmt.Errorf("get local ip failed")
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} else if len(ips) == 1 {
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return ips[0], nil
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} else {
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// Select the one connected to the network
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// when there are multiple network interfaces
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// Is there a better way？
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c, err := net.Dial("udp", "8.8.8.8:80")
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if err != nil {
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return ips[0], nil
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}
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defer c.Close()
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return c.LocalAddr().(*net.UDPAddr).IP.String(), nil
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}
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}
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