func internalSend(client *nsqd.ClientV2, frameType int32, data []byte, needFlush bool) error {
client.LockWrite()
defer client.UnlockWrite()
if client.Writer == nil {
return errors.New("client closed")
}
var zeroTime time.Time
if client.HeartbeatInterval > 0 {
client.SetWriteDeadline(time.Now().Add(client.HeartbeatInterval))
} else {
client.SetWriteDeadline(zeroTime)
}
_, err := protocol.SendFramedResponse(client.Writer, frameType, data)
if err != nil {
return err
}
if needFlush || frameType != frameTypeMessage {
err = client.Flush()
}
return err
}