#------------------------------------------------------------------------------
# save binary data into file
def saveBinDataToFile(binaryData, fileToSave):
    saveOK = False;
    try:
        savedBinFile = open(fileToSave, "wb"); # open a file, if not exist, create it
        #print "savedBinFile=",savedBinFile;
        savedBinFile.write(binaryData);
        savedBinFile.close();
        saveOK = True;
    except :
        saveOK = False;
    return saveOK;
        

# if url is invalid, then add timeout can avoid dead
respHtml = getUrlRespHtml(realUrl, useGzip=False, timeout=gConst['defaultTimeout']);
isDownOK = saveBinDataToFile(respHtml, fileToSave);