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python实现的udp协议Server和Client代码实例

直接上代码:
Server端:

复制代码 代码如下:

#!/usr/bin/env python
# UDP Echo Server – udpserver.py
import socket, traceback

host = ”
port = 54321

s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
s.bind((host, port))

while 1:
try:
message, address = s.recvfrom(8192)
print “Got data from”, address, “: “, message
s.sendto(message, address)
except (KeyboardInterrupt, SystemExit):
raise
except:
traceback.print_exc()

Client端:

复制代码 代码如下:

1 #!/usr/bin/env python
# UDP Client – udpclient.py
import socket, sys

host = sys.argv[1]
textport = sys.argv[2]

s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
try:
port = int(textport)
except ValueError:
port = socket.getservbyname(textport, ‘udp’)
s.connect((host, port))
while 1:
print “Enter data to transmit:”
data = sys.stdin.readline().strip()
s.sendall(data)
print “Looking for replies; press Ctrl-C or Ctrl-Break to stop.”
buf = s.recv(2048)
if not len(buf):
break
print “Server replies: “,
sys.stdout.write(buf)
print “n”

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