reset method
void
reset()
Implementation
void reset() {
_downloadRate = 0;
_uploadRate = 0;
_downloadProgress = '0';
_uploadProgress = '0';
_unitText = 'Mb/s';
_downloadCompletionTime = 0;
_uploadCompletionTime = 0;
downloadRate = 0;
uploadRate = 0;
stepsDown = 0;
stepsUp = 0;
}