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#! /usr/bin/env python3
# Test network throughput.
#
# Usage:
# 1) on host_A: throughput -s [port] # start a server
# 2) on host_B: throughput -c count host_A [port] # start a client
#
# The server will service multiple clients until it is killed.
#
# The client performs one transfer of count*BUFSIZE bytes and
# measures the time it takes (roundtrip!).
import sys, time
from socket import *
MY_PORT = 50000 + 42
BUFSIZE = 1024
def main():
if len(sys.argv) < 2:
usage()
if sys.argv[1] == '-s':
server()
elif sys.argv[1] == '-c':
client()
else:
usage()
def usage():
sys.stdout = sys.stderr
print('Usage: (on host_A) throughput -s [port]')
print('and then: (on host_B) throughput -c count host_A [port]')
sys.exit(2)
def server():
if len(sys.argv) > 2:
port = eval(sys.argv[2])
else:
port = MY_PORT
s = socket(AF_INET, SOCK_STREAM)
s.bind(('', port))
s.listen(1)
print('Server ready...')
while 1:
conn, (host, remoteport) = s.accept()
while 1:
data = conn.recv(BUFSIZE)
if not data:
break
del data
conn.send('OK\n')
conn.close()
print('Done with', host, 'port', remoteport)
def client():
if len(sys.argv) < 4:
usage()
count = int(eval(sys.argv[2]))
host = sys.argv[3]
if len(sys.argv) > 4:
port = eval(sys.argv[4])
else:
port = MY_PORT
testdata = 'x' * (BUFSIZE-1) + '\n'
t1 = time.time()
s = socket(AF_INET, SOCK_STREAM)
t2 = time.time()
s.connect((host, port))
t3 = time.time()
i = 0
while i < count:
i = i+1
s.send(testdata)
s.shutdown(1) # Send EOF
t4 = time.time()
data = s.recv(BUFSIZE)
t5 = time.time()
print(data)
print('Raw timers:', t1, t2, t3, t4, t5)
print('Intervals:', t2-t1, t3-t2, t4-t3, t5-t4)
print('Total:', t5-t1)
print('Throughput:', round((BUFSIZE*count*0.001) / (t5-t1), 3), end=' ')
print('K/sec.')
main()
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