#!/usr/bin/env python

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#       to you under the Apache License, Version 2.0 (the
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#
#         http://www.apache.org/licenses/LICENSE-2.0
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'''
sstress - an SMTP stress testing tool
'''

from __future__ import unicode_literals
from __future__ import print_function
from __future__ import absolute_import
import smtplib
import threading
import time
from six.moves import range

C = 5
N = 1000
TOADDR = 'nobody@localhost'
SERVER = 'localhost'
PORT = 8825
SIZE = 10 * (2 ** 10)
EMAIL_TEXT = 'X' * SIZE


def main():
    threads = [threading.Thread(target=stress) for x in range(C)]
    begin = time.time()
    for t in threads:
        t.start()
    for t in threads:
        t.join()
    end = time.time()
    elapsed = end - begin
    print('%d requests completed in %f seconds' % (N, elapsed))
    print('%f requests/second' % (N / elapsed))


def stress():
    server = smtplib.SMTP(SERVER, PORT)
    for x in range(N / C):
        server.sendmail('sstress@localhost', TOADDR, EMAIL_TEXT)

if __name__ == '__main__':
    main()