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infrequently ping bootnode (#3540)

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Preston Van Loon 2019-09-21 09:21:44 -07:00 committed by terence tsao
parent 37596ac188
commit fb8d6a4046
1 changed files with 24 additions and 0 deletions
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24
beacon-chain/p2p/service.go
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@ -21,7 +21,9 @@ import (
) )
var _ = shared.Service(&Service{}) var _ = shared.Service(&Service{})
var pollingPeriod = 1 * time.Second var pollingPeriod = 1 * time.Second
var bootnodePingPeriod = 5 * time.Minute
var ttl = 1 * time.Hour var ttl = 1 * time.Hour
// Service for managing peer to peer (p2p) networking. // Service for managing peer to peer (p2p) networking.
@ -110,6 +112,7 @@ func (s *Service) Start() {
s.dv5Listener = listener s.dv5Listener = listener
go s.listenForNewNodes() go s.listenForNewNodes()
go s.maintainBootnode()
} }
s.started = true s.started = true
@ -196,7 +199,28 @@ func (s *Service) listenForNewNodes() {
case <-s.ctx.Done(): case <-s.ctx.Done():
log.Debug("p2p context is closed, exiting routine") log.Debug("p2p context is closed, exiting routine")
break break
}
}
}
// maintainBootnode connection by infrequently pinging the bootnode ENR. If the bootnode server has
// restarted and this client pruned them from the local table, then a ping will reinsert this
// clients' ENR into the table of the bootnode again.
func (s *Service) maintainBootnode() {
if s.cfg.BootstrapNodeAddr == "" {
return
}
ticker := time.NewTicker(bootnodePingPeriod)
bootNode := enode.MustParse(s.cfg.BootstrapNodeAddr)
for {
select {
case <-ticker.C:
log.Debug("Pinging bootnode")
if err := s.dv5Listener.Ping(bootNode); err != nil {
log.WithError(err).Error("Failed to ping bootnode")
}
case <-s.ctx.Done():
return
} }
} }
} }