trivial file download

download.py

#!/usr/bin/python

import socket, os, hashlib, time

md5 = hashlib.md5()
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.connect(('server_address', 2021))
start = time.time()
length = 0
out = open('/tmp/download', 'wb')
while True:
    message = sock.recv(65536)
    if message:
        length += len(message)
        md5.update(message)
        out.write(message)
    else:
        print "done"
        sock.close()
        out.close()
        break

seconds = time.time() - start
print md5.hexdigest()
print length, " bytes"
print "%.3f seconds" % (seconds)
print "%.3f MiB/s" % (length/seconds/1024/1024)

result.txt

$ time ./download.py
done
7c148e0a1b330186adef66ee3e2d433d
4238800896  bytes
36.339 seconds
111.243 MiB/s

real    0m36.357s
user    0m13.490s
sys     0m14.390s