use golang time datatype instead of time units in name

connection.go

@@ -21,14 +21,14 @@ const (
 	minReadBufferSize  = 1024
 	minWriteBufferSize = 65536
 	idleTimeoutMinutes = 5
-	updateStatsSeconds = 2
-	pingTimeoutSeconds = 40
-	flushThrottleMS    = 100
+	updateState        = 2 * time.Second
+	pingTimeout        = 40 * time.Second
+	flushThrottle      = 100 * time.Millisecond
 
 	defaultSendQueueCapacity   = 1
 	defaultRecvBufferCapacity  = 4096
 	defaultRecvMessageCapacity = 22020096 // 21MB
-	defaultSendTimeoutSeconds  = 10
+	defaultSendTimeout         = 10 * time.Second
 )
 
 type receiveCbFunc func(chID byte, msgBytes []byte)
@@ -131,9 +131,9 @@ func NewMConnection(config cfg.Config, conn net.Conn, chDescs []*ChannelDescript
 func (c *MConnection) OnStart() error {
 	c.BaseService.OnStart()
 	c.quit = make(chan struct{})
-	c.flushTimer = cmn.NewThrottleTimer("flush", flushThrottleMS*time.Millisecond)
-	c.pingTimer = cmn.NewRepeatTimer("ping", pingTimeoutSeconds*time.Second)
-	c.chStatsTimer = cmn.NewRepeatTimer("chStats", updateStatsSeconds*time.Second)
+	c.flushTimer = cmn.NewThrottleTimer("flush", flushThrottle)
+	c.pingTimer = cmn.NewRepeatTimer("ping", pingTimeout)
+	c.chStatsTimer = cmn.NewRepeatTimer("chStats", updateState)
 	go c.sendRoutine()
 	go c.recvRoutine()
 	return nil
@@ -538,9 +538,9 @@ func newChannel(conn *MConnection, desc *ChannelDescriptor) *Channel {
 
 // Queues message to send to this channel.
 // Goroutine-safe
-// Times out (and returns false) after defaultSendTimeoutSeconds
+// Times out (and returns false) after defaultSendTimeout
 func (ch *Channel) sendBytes(bytes []byte) bool {
-	timeout := time.NewTimer(defaultSendTimeoutSeconds * time.Second)
+	timeout := time.NewTimer(defaultSendTimeout)
 	select {
 	case <-timeout.C:
 		// timeout