def main(url):
parsed = urlparse(url)
# exit on unsupported application protocol
if parsed.scheme.lower() != 'http':
print '"' + parsed.scheme + '"' + ' scheme address is not supported'
sys.exit()
host = parsed.netloc
filename = getFilename(parsed.path)
request = getRequest(parsed.path, host)
print filename
print request
# Initiate the download
startTime = time.time()
sock = TCP()
sock.connect(host)
sock.sendGet(request)
# Start the retrieve
filedata = sock.transmission()
print filedata
# if found it is a non-200 packet, exit
if not filedata.startswith("HTTP/1.1 200"):
print ('Non-200 HTTP status code is not supported')
sys.exit(0)
# remove the HTTP header:
pos = filedata.find("\r\n\r\n")
if pos > -1:
pos += 4
filedata = filedata[pos:]
endTime = time.time()
# save file to disk
saveFile(filename, filedata)
print len(filedata),
print 'Bytes received'
#timecost = '%.2g' % (endTime - startTime)
#print timecost,
#print 'seconds passed. Average speed:',
#throughput = '%f' % (len(filedata) / float(timecost) / 1000)
#print throughput,
#print 'KBps'
sock.sock.close()
