Fix #246

client_test.go

@@ -46,6 +46,12 @@ func TestClientDefault(t *testing.T) {
 	cl.Close()
 }
 
+func TestClientNilConfig(t *testing.T) {
+	cl, err := NewClient(nil)
+	require.NoError(t, err)
+	cl.Close()
+}
+
 func TestBoltPieceCompletionClosedWhenClientClosed(t *testing.T) {
 	cfg := TestingConfig()
 	pc, err := storage.NewBoltPieceCompletion(cfg.DataDir)

config.go

@@ -161,6 +161,9 @@ func (cfg *Config) setDefaults() {
 	if cfg.DhtStartingNodes == nil {
 		cfg.DhtStartingNodes = dht.GlobalBootstrapAddrs
 	}
+	if cfg.ListenHost == nil {
+		cfg.ListenHost = func(string) string { return "" }
+	}
 }
 
 type EncryptionPolicy struct {