Merge pull request #201 from Bytom/v0.1

[bytom/vapor.git] / vendor / github.com / btcsuite / btcd / addrmgr / knownaddress.go

diff --git a/vendor/github.com/btcsuite/btcd/addrmgr/knownaddress.go b/vendor/github.com/btcsuite/btcd/addrmgr/knownaddress.go
deleted file mode 100644 (file)
index 4a8da83..0000000
--- a/vendor/github.com/btcsuite/btcd/addrmgr/knownaddress.go
+++ /dev/null
@@ -1,97 +0,0 @@
-// Copyright (c) 2013-2014 The btcsuite developers
-// Use of this source code is governed by an ISC
-// license that can be found in the LICENSE file.
-
-package addrmgr
-
-import (
-       "time"
-
-       "github.com/btcsuite/btcd/wire"
-)
-
-// KnownAddress tracks information about a known network address that is used
-// to determine how viable an address is.
-type KnownAddress struct {
-       na          *wire.NetAddress
-       srcAddr     *wire.NetAddress
-       attempts    int
-       lastattempt time.Time
-       lastsuccess time.Time
-       tried       bool
-       refs        int // reference count of new buckets
-}
-
-// NetAddress returns the underlying wire.NetAddress associated with the
-// known address.
-func (ka *KnownAddress) NetAddress() *wire.NetAddress {
-       return ka.na
-}
-
-// LastAttempt returns the last time the known address was attempted.
-func (ka *KnownAddress) LastAttempt() time.Time {
-       return ka.lastattempt
-}
-
-// chance returns the selection probability for a known address.  The priority
-// depends upon how recently the address has been seen, how recently it was last
-// attempted and how often attempts to connect to it have failed.
-func (ka *KnownAddress) chance() float64 {
-       now := time.Now()
-       lastAttempt := now.Sub(ka.lastattempt)
-
-       if lastAttempt < 0 {
-               lastAttempt = 0
-       }
-
-       c := 1.0
-
-       // Very recent attempts are less likely to be retried.
-       if lastAttempt < 10*time.Minute {
-               c *= 0.01
-       }
-
-       // Failed attempts deprioritise.
-       for i := ka.attempts; i > 0; i-- {
-               c /= 1.5
-       }
-
-       return c
-}
-
-// isBad returns true if the address in question has not been tried in the last
-// minute and meets one of the following criteria:
-// 1) It claims to be from the future
-// 2) It hasn't been seen in over a month
-// 3) It has failed at least three times and never succeeded
-// 4) It has failed ten times in the last week
-// All addresses that meet these criteria are assumed to be worthless and not
-// worth keeping hold of.
-func (ka *KnownAddress) isBad() bool {
-       if ka.lastattempt.After(time.Now().Add(-1 * time.Minute)) {
-               return false
-       }
-
-       // From the future?
-       if ka.na.Timestamp.After(time.Now().Add(10 * time.Minute)) {
-               return true
-       }
-
-       // Over a month old?
-       if ka.na.Timestamp.Before(time.Now().Add(-1 * numMissingDays * time.Hour * 24)) {
-               return true
-       }
-
-       // Never succeeded?
-       if ka.lastsuccess.IsZero() && ka.attempts >= numRetries {
-               return true
-       }
-
-       // Hasn't succeeded in too long?
-       if !ka.lastsuccess.After(time.Now().Add(-1*minBadDays*time.Hour*24)) &&
-               ka.attempts >= maxFailures {
-               return true
-       }
-
-       return false
-}