Merge pull request #201 from Bytom/v0.1

[bytom/vapor.git] / vendor / github.com / btcsuite / btcd / connmgr / seed.go

diff --git a/vendor/github.com/btcsuite/btcd/connmgr/seed.go b/vendor/github.com/btcsuite/btcd/connmgr/seed.go
deleted file mode 100644 (file)
index 063b546..0000000
--- a/vendor/github.com/btcsuite/btcd/connmgr/seed.go
+++ /dev/null
@@ -1,75 +0,0 @@
-// Copyright (c) 2016 The btcsuite developers
-// Use of this source code is governed by an ISC
-// license that can be found in the LICENSE file.
-
-package connmgr
-
-import (
-       "fmt"
-       mrand "math/rand"
-       "net"
-       "strconv"
-       "time"
-
-       "github.com/btcsuite/btcd/chaincfg"
-       "github.com/btcsuite/btcd/wire"
-)
-
-const (
-       // These constants are used by the DNS seed code to pick a random last
-       // seen time.
-       secondsIn3Days int32 = 24 * 60 * 60 * 3
-       secondsIn4Days int32 = 24 * 60 * 60 * 4
-)
-
-// OnSeed is the signature of the callback function which is invoked when DNS
-// seeding is succesfull.
-type OnSeed func(addrs []*wire.NetAddress)
-
-// LookupFunc is the signature of the DNS lookup function.
-type LookupFunc func(string) ([]net.IP, error)
-
-// SeedFromDNS uses DNS seeding to populate the address manager with peers.
-func SeedFromDNS(chainParams *chaincfg.Params, reqServices wire.ServiceFlag,
-       lookupFn LookupFunc, seedFn OnSeed) {
-
-       for _, dnsseed := range chainParams.DNSSeeds {
-               var host string
-               if !dnsseed.HasFiltering || reqServices == wire.SFNodeNetwork {
-                       host = dnsseed.Host
-               } else {
-                       host = fmt.Sprintf("x%x.%s", uint64(reqServices), dnsseed.Host)
-               }
-
-               go func(host string) {
-                       randSource := mrand.New(mrand.NewSource(time.Now().UnixNano()))
-
-                       seedpeers, err := lookupFn(host)
-                       if err != nil {
-                               log.Infof("DNS discovery failed on seed %s: %v", host, err)
-                               return
-                       }
-                       numPeers := len(seedpeers)
-
-                       log.Infof("%d addresses found from DNS seed %s", numPeers, host)
-
-                       if numPeers == 0 {
-                               return
-                       }
-                       addresses := make([]*wire.NetAddress, len(seedpeers))
-                       // if this errors then we have *real* problems
-                       intPort, _ := strconv.Atoi(chainParams.DefaultPort)
-                       for i, peer := range seedpeers {
-                               addresses[i] = wire.NewNetAddressTimestamp(
-                                       // bitcoind seeds with addresses from
-                                       // a time randomly selected between 3
-                                       // and 7 days ago.
-                                       time.Now().Add(-1*time.Second*time.Duration(secondsIn3Days+
-                                               randSource.Int31n(secondsIn4Days))),
-                                       0, peer, uint16(intPort))
-                       }
-
-                       seedFn(addresses)
-               }(host)
-       }
-}