yanic/respond/daemon/main.go

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2019-01-24 01:54:21 +00:00
package respondd
import (
"net"
"time"
"github.com/bdlm/log"
"github.com/FreifunkBremen/yanic/data"
"github.com/FreifunkBremen/yanic/lib/duration"
)
type Daemon struct {
MultiInstance bool `toml:"multi_instance"`
DataInterval duration.Duration `toml:"data_interval"`
Listen []struct {
Address string `toml:"address"`
Interface string `toml:"interface"`
Port int `toml:"port"`
} `toml:"listen"`
Data *data.ResponseData `toml:"data"`
dataByInterface map[string]*data.ResponseData
}
func (d *Daemon) Start() {
if d.Data == nil {
d.Data = &data.ResponseData{}
}
d.updateData()
go d.updateWorker()
for _, listen := range d.Listen {
var socket *net.UDPConn
var err error
addr := net.ParseIP(listen.Address)
if addr.IsMulticast() {
var iface *net.Interface
if listen.Interface != "" {
iface, err = net.InterfaceByName(listen.Interface)
if err != nil {
log.Fatal(err)
}
}
if socket, err = net.ListenMulticastUDP("udp6", iface, &net.UDPAddr{
IP: addr,
Port: listen.Port,
}); err != nil {
log.Fatal(err)
}
} else {
if socket, err = net.ListenUDP("udp6", &net.UDPAddr{
IP: addr,
Port: listen.Port,
}); err != nil {
log.Fatal(err)
}
}
go d.handler(socket)
}
log.Debug("all listener started")
}
func (d *Daemon) updateWorker() {
c := time.Tick(d.DataInterval.Duration)
for range c {
d.updateData()
}
}