python2.5_1.5_通过指定的端口和协议找到服务名

代码如下：

# -*- coding: utf-8 -*-
import socket


def find_service_name():
    protocolname = 'tcp'
    for port in [80, 25]:
        print 'Port:%s =>service name:%s' % (port, socket.getservbyport(port, protocolname))
        print 'Port:%s =>service name:%s' % (53, socket.getservbyport(53, 'udp'))

if __name__ == '__main__':
    find_service_name()

运行结果如下：

Port:80 =>service name:http
Port:53 =>service name:domain
Port:25 =>service name:smtp
Port:53 =>service name:domain