LBRYCommunity/lbcd
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Move initial DNS seeding to own func.

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This commit is contained in:
Dave Collins 2013-10-07 17:38:45 -05:00
parent 4b728df738
commit c03f2b757b
1 changed files with 43 additions and 35 deletions
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78
server.go
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@ -211,6 +211,47 @@ func (s *server) listenHandler(listener net.Listener) {
log.Tracef("[SRVR] Listener handler done for %s", listener.Addr())
}
// seedFromDNS uses DNS seeding to populate the address manager with peers.
func (s *server) seedFromDNS() {
// Nothing to do if DNS seeding is disabled.
if cfg.DisableDNSSeed {
return
}
proxy := ""
if cfg.Proxy != "" && cfg.UseTor {
proxy = cfg.Proxy
}
for _, seeder := range activeNetParams.dnsSeeds {
seedpeers := dnsDiscover(seeder, proxy)
if len(seedpeers) == 0 {
continue
}
addresses := make([]*btcwire.NetAddress, len(seedpeers))
// if this errors then we have *real* problems
intPort, _ := strconv.Atoi(activeNetParams.peerPort)
for i, peer := range seedpeers {
addresses[i] = new(btcwire.NetAddress)
addresses[i].SetAddress(peer, uint16(intPort))
// bitcoind seeds with addresses from
// a time randomly selected between 3
// and 7 days ago.
addresses[i].Timestamp = time.Now().Add(-1 *
time.Second * time.Duration(secondsIn3Days+
s.addrManager.rand.Int31n(secondsIn4Days)))
}
// Bitcoind uses a lookup of the dns seeder here. This
// is rather strange since the values looked up by the
// DNS seed lookups will vary quite a lot.
// to replicate this behaviour we put all addresses as
// having come from the first one.
s.addrManager.AddAddresses(addresses, addresses[0])
}
// XXX if this is empty do we want to use hardcoded
// XXX peers like bitcoind does?
}
// peerHandler is used to handle peer operations such as adding and removing
// peers to and from the server, banning peers, and broadcasting messages to
// peers. It must be run a a goroutine.
@ -232,41 +273,8 @@ func (s *server) peerHandler() {
maxOutbound = cfg.MaxPeers
}
// Do initial DNS seeding to populate address manager.
if !cfg.DisableDNSSeed {
proxy := ""
if cfg.Proxy != "" && cfg.UseTor {
proxy = cfg.Proxy
}
for _, seeder := range activeNetParams.dnsSeeds {
seedpeers := dnsDiscover(seeder, proxy)
if len(seedpeers) == 0 {
continue
}
addresses := make([]*btcwire.NetAddress, len(seedpeers))
// if this errors then we have *real* problems
intPort, _ := strconv.Atoi(activeNetParams.peerPort)
for i, peer := range seedpeers {
addresses[i] = new(btcwire.NetAddress)
addresses[i].SetAddress(peer, uint16(intPort))
// bitcoind seeds with addresses from
// a time randomly selected between 3
// and 7 days ago.
addresses[i].Timestamp = time.Now().Add(-1 *
time.Second * time.Duration(secondsIn3Days+
s.addrManager.rand.Int31n(secondsIn4Days)))
}
// Bitcoind uses a lookup of the dns seeder here. This
// is rather strange since the values looked up by the
// DNS seed lookups will vary quite a lot.
// to replicate this behaviour we put all addresses as
// having come from the first one.
s.addrManager.AddAddresses(addresses, addresses[0])
}
// XXX if this is empty do we want to use hardcoded
// XXX peers like bitcoind does?
}
// Add peers discovered through DNS to the address manager.
s.seedFromDNS()
// Start up persistent peers.
permanentPeers := cfg.ConnectPeers