Mansi Agarwal / NSAPITests_mansi

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Fork of NSAPITests by NetworkSocketAPI

EchoServer.py@4:b52f17273177, 2016-03-02 (annotated)

Committer:
Christopher Haster
Date:
Wed Mar 02 18:02:47 2016 -0600
Revision:
4:b52f17273177
Child:
11:fbfe3498404a
Changed to just an echo server

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Christopher Haster 4:b52f17273177 1 #!/usr/bin/env python
Christopher Haster 4:b52f17273177 2 import socket
Christopher Haster 4:b52f17273177 3 import signal
Christopher Haster 4:b52f17273177 4 import select
Christopher Haster 4:b52f17273177 5
Christopher Haster 4:b52f17273177 6
Christopher Haster 4:b52f17273177 7 def main(port):
Christopher Haster 4:b52f17273177 8 port = int(port)
Christopher Haster 4:b52f17273177 9
Christopher Haster 4:b52f17273177 10 udp = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
Christopher Haster 4:b52f17273177 11 udp.bind(('', port))
Christopher Haster 4:b52f17273177 12 udp.setblocking(0)
Christopher Haster 4:b52f17273177 13 udp.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
Christopher Haster 4:b52f17273177 14
Christopher Haster 4:b52f17273177 15 tcp = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
Christopher Haster 4:b52f17273177 16 tcp.bind(('', port))
Christopher Haster 4:b52f17273177 17 tcp.setblocking(0)
Christopher Haster 4:b52f17273177 18 tcp.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
Christopher Haster 4:b52f17273177 19 tcp.listen(5)
Christopher Haster 4:b52f17273177 20
Christopher Haster 4:b52f17273177 21 print "running on port %d" % port
Christopher Haster 4:b52f17273177 22 sockets = [tcp, udp]
Christopher Haster 4:b52f17273177 23 clients = []
Christopher Haster 4:b52f17273177 24
Christopher Haster 4:b52f17273177 25 while True:
Christopher Haster 4:b52f17273177 26 select.select(sockets, [], [])
Christopher Haster 4:b52f17273177 27
Christopher Haster 4:b52f17273177 28 try:
Christopher Haster 4:b52f17273177 29 data, addr = udp.recvfrom(1 << 12)
Christopher Haster 4:b52f17273177 30 print 'udp %s:%d %d' % (addr[0], addr[1], len(data))
Christopher Haster 4:b52f17273177 31 udp.sendto(data, addr)
Christopher Haster 4:b52f17273177 32 except socket.error:
Christopher Haster 4:b52f17273177 33 pass
Christopher Haster 4:b52f17273177 34
Christopher Haster 4:b52f17273177 35 try:
Christopher Haster 4:b52f17273177 36 client, addr = tcp.accept()
Christopher Haster 4:b52f17273177 37 print 'tcp %s:%d connect' % (addr[0], addr[1])
Christopher Haster 4:b52f17273177 38 client.setblocking(0)
Christopher Haster 4:b52f17273177 39 client.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
Christopher Haster 4:b52f17273177 40 sockets.append(client)
Christopher Haster 4:b52f17273177 41 clients.append((client, addr))
Christopher Haster 4:b52f17273177 42 except socket.error:
Christopher Haster 4:b52f17273177 43 pass
Christopher Haster 4:b52f17273177 44
Christopher Haster 4:b52f17273177 45 for client, addr in clients:
Christopher Haster 4:b52f17273177 46 try:
Christopher Haster 4:b52f17273177 47 data = client.recv(1 << 12)
Christopher Haster 4:b52f17273177 48 if data:
Christopher Haster 4:b52f17273177 49 print 'tcp %s:%d %d' % (addr[0], addr[1], len(data))
Christopher Haster 4:b52f17273177 50 client.send(data)
Christopher Haster 4:b52f17273177 51 else:
Christopher Haster 4:b52f17273177 52 print 'tcp %s:%d disconnect' % (addr[0], addr[1])
Christopher Haster 4:b52f17273177 53 sockets.remove(client)
Christopher Haster 4:b52f17273177 54 clients.remove((client, addr))
Christopher Haster 4:b52f17273177 55 client.close()
Christopher Haster 4:b52f17273177 56 except socket.error:
Christopher Haster 4:b52f17273177 57 pass
Christopher Haster 4:b52f17273177 58
Christopher Haster 4:b52f17273177 59
Christopher Haster 4:b52f17273177 60 if __name__ == "__main__":
Christopher Haster 4:b52f17273177 61 import sys
Christopher Haster 4:b52f17273177 62 main(*sys.argv[1:])