func (p *Pinger) run(once bool) {
p.debugln("Run(): Start")
var conn, conn6 *icmp.PacketConn
if p.hasIPv4 {
if conn = p.listen(ipv4Proto[p.network], p.source); conn == nil {
return
}
defer conn.Close()
}
if p.hasIPv6 {
if conn6 = p.listen(ipv6Proto[p.network], p.source6); conn6 == nil {
return
}
defer conn6.Close()
}
recv := make(chan *packet, 1)
recvCtx := newContext()
wg := new(sync.WaitGroup)
p.debugln("Run(): call recvICMP()")
if conn != nil {
wg.Add(1)
go p.recvICMP(conn, recv, recvCtx, wg)
}
if conn6 != nil {
wg.Add(1)
go p.recvICMP(conn6, recv, recvCtx, wg)
}
p.debugln("Run(): call sendICMP()")
queue, err := p.sendICMP(conn, conn6)
ticker := time.NewTicker(p.MaxRTT)
mainloop:
for {
select {
case <-p.ctx.stop:
p.debugln("Run(): <-p.ctx.stop")
break mainloop
case <-recvCtx.done:
p.debugln("Run(): <-recvCtx.done")
p.mu.Lock()
err = recvCtx.err
p.mu.Unlock()
break mainloop
case <-ticker.C:
p.mu.Lock()
handler := p.OnIdle
p.mu.Unlock()
if handler != nil {
handler()
}
if once || err != nil {
break mainloop
}
p.debugln("Run(): call sendICMP()")
queue, err = p.sendICMP(conn, conn6)
case r := <-recv:
p.debugln("Run(): <-recv")
p.procRecv(r, queue)
}
}
ticker.Stop()
p.debugln("Run(): close(recvCtx.stop)")
close(recvCtx.stop)
p.debugln("Run(): wait recvICMP()")
wg.Wait()
p.mu.Lock()
p.ctx.err = err
p.mu.Unlock()
p.debugln("Run(): close(p.ctx.done)")
close(p.ctx.done)
p.debugln("Run(): End")
}
