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\”