refac(bitswap) privatize strategies

temporarily. until bitswap is refactored

bitswap/bitswap.go

@@ -56,7 +56,7 @@ type bitswap struct {
 	// wantList is the set of keys we want values for. a map for fast lookups.
 	wantList KeySet
 
-	strategy StrategyFunc
+	strategy strategyFunc
 
 	haltChan chan struct{}
 }
@@ -74,7 +74,7 @@ func NewSession(parent context.Context, s bsnet.NetworkService, p *peer.Peer, d
 		sender:        bsnet.NewNetworkAdapter(s, &receiver),
 		haltChan:      make(chan struct{}),
 		notifications: notifications.New(),
-		strategy:      YesManStrategy,
+		strategy:      yesManStrategy,
 	}
 	receiver.Delegate(bs)
 

bitswap/ledger.go

@@ -30,7 +30,7 @@ type Ledger struct {
 	// wantList is a (bounded, small) set of keys that Partner desires.
 	wantList KeySet
 
-	Strategy StrategyFunc
+	Strategy strategyFunc
 }
 
 // LedgerMap lists Ledgers by their Partner key.

bitswap/strategy.go

@@ -5,13 +5,13 @@ import (
 	"math/rand"
 )
 
-type StrategyFunc func(*Ledger) bool
+type strategyFunc func(*Ledger) bool
 
-func StandardStrategy(l *Ledger) bool {
+func standardStrategy(l *Ledger) bool {
 	return rand.Float64() <= probabilitySend(l.Accounting.Value())
 }
 
-func YesManStrategy(l *Ledger) bool {
+func yesManStrategy(l *Ledger) bool {
 	return true
 }