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#! /usr/bin/python2.7 # 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