xinted（eXtended InterNET daemon)即网络守护进程。xinetd能够同时监听多个指定的端口，在接受用户请求时，它能够根据用户请求的端口的不同，启动不同的网络服务进程来处理这些用户请求。
详细了解xinted，可以参考http://www.cnblogs.com/itech/archive/2010/12/27/1914846.html
例子1，使用xinetd调用httpserver.py：
httpserver.py
#!/usr/bin/python import sys request = ‘‘ while True: data= sys.stdin.readline().strip() request = request + data + ‘<br>‘ if data == ‘‘: print ‘HTTP/1.0 200 OK‘ print ‘‘ print ‘<html><body><p>‘ + request + ‘</p></body></html>‘ sys.stdout.flush() break
1.chmod u+x httpserver.py
2.在/etc/xinetd.d下创建httpserver(任意名字),进行设置：
vim /etc/xinetd.d/httpserver
service pythontestserver
{
disable = no
flags = REUSE
type = UNLISTED
port = 9991
protocol = tcp
socket_type = stream
wait = no
user = root
server = /soft/11.27/httpserver.py
server_args = /soft/11.27/httpserver.py
log_on_failure += USERID
3.重启xinet.d是配置生效
/etc/init.d/xinetd restart
4.这时查看9991端口（即上面设置的port = 9991）是否打开
[[email protected] 11.27]# netstat -atnl|grep 9991 tcp 0 0 0.0.0.0:9991 0.0.0.0:*
5.打开http://192.168.220.2:9991/，能看到数据
例子2，使用xinetd调用errorserver.py：
errorserver.py(注意：由于xinet.d设置了侦听51423端口，因此errorserver.py的s.bind((host,port))要注释掉，否则会报"address already in use"的错误)
#!/usr/bin/python import socket,traceback,time,struct,sys host = ‘192.168.220.2‘ port = 51423 s=socket.socket(socket.AF_INET,socket.SOCK_STREAM) s.setsockopt(socket.SOL_SOCKET,socket.SO_REUSEADDR,1) #s.bind((host,port)) s.listen(1) while True: try: message,address = s.accept() except (KeyboardInterrupt, SystemExit): raise except: traceback.print_exc() continue try: #host = socket.gethostbyaddr(message) print ‘Got name %s from %s‘ % (host,message.getpeername()) #raise KeyboardInterrupt #print ‘Got connection from‘, message.getpeername() except: print ‘cannot get name!‘ try: message.close() except KeyboardInterrupt: print ‘Ctrl + C,exit!‘ sys.exit(1) except: traceback.print_exc()
- chmod u+x errorserver.py
2.在/etc/xinetd.d下创建pythontestserver(任意名字),进行设置：
vim /etc/xinetd.d/pythontestserver
service pythontestserver
{
disable = no
flags = REUSE
type = UNLISTED
port = 51423
protocol = tcp
socket_type = stream
wait = no
user = root
server = /soft/11.25/errorserver.py
server_args = /soft/11.25/errorserver.py
log_on_failure += USERID
3.重启xinet.d是配置生效
/etc/init.d/xinetd restart
4.这时查看51423端口（即上面设置的port = 51423）是否打开
[[email protected] 11.25]# netstat -atnl|grep 51423 tcp 0 0 0.0.0.0:51423 0.0.0.0:* LISTEN tcp 9 0 127.0.0.1:51423 127.0.0.1:53440 CLOSE_WAIT tcp 0 0 127.0.0.1:51423 127.0.0.1:53442 ESTABLISHED
5.xinet.d配置好了，使用telnet连接51423端口。下面是运行结果
[[email protected] ~]# telnet localhost 51423 Trying 127.0.0.1... Connected to localhost.localdomain (127.0.0.1). Escape character is ‘^]‘.
时间： 2024-10-12 22:37:06