27 网络通信协议 tcp udp subprocess
1.模块subprocess
import subprocess cmd_str = input('请输入指令>>>') sub_obj = subprocess.Popen( cmd_str, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE ) print(sub_obj.stdout.read().decode('gbk')) print('错误信息>>>>',sub_obj.stderr.read().decode('gbk'))
2.时间服务器
#服务端
from socket import * from time import strftime ip_port = ('127.0.0.1', 9000) bufsize = 1024 tcp_server = socket(AF_INET, SOCK_DGRAM) tcp_server.setsockopt(SOL_SOCKET,SO_REUSEADDR,1) tcp_server.bind(ip_port) while True: msg, addr = tcp_server.recvfrom(bufsize) print('===>', msg) if not msg: time_fmt = '%Y-%m-%d %X' else: time_fmt = msg.decode('utf-8') back_msg = strftime(time_fmt) tcp_server.sendto(back_msg.encode('utf-8'), addr) tcp_server.close()
#客户端
from socket import * ip_port=('127.0.0.1',9000) bufsize=1024 tcp_client=socket(AF_INET,SOCK_DGRAM) while True: msg=input('请输入时间格式(例%Y %m %d)>>: ').strip() tcp_client.sendto(msg.encode('utf-8'),ip_port) data=tcp_client.recv(bufsize)
3.qq聊天
#服务端
#_*_coding:utf-8_*_ import socket ip_port=('127.0.0.1',8081) udp_server_sock=socket.socket(socket.AF_INET,socket.SOCK_DGRAM) udp_server_sock.bind(ip_port) while True: qq_msg,addr=udp_server_sock.recvfrom(1024) print('来自[%s:%s]的一条消息:\033[1;44m%s\033[0m' %(addr[0],addr[1],qq_msg.decode('utf-8'))) back_msg=input('回复消息: ').strip() udp_server_sock.sendto(back_msg.encode('utf-8'),addr)
#客户端
#_*_coding:utf-8_*_ import socket BUFSIZE=1024 udp_client_socket=socket.socket(socket.AF_INET,socket.SOCK_DGRAM) qq_name_dic={ '金老板':('127.0.0.1',8081), '哪吒':('127.0.0.1',8081), 'egg':('127.0.0.1',8081), 'yuan':('127.0.0.1',8081), } while True: qq_name=input('请选择聊天对象: ').strip() while True: msg=input('请输入消息,回车发送,输入q结束和他的聊天: ').strip() if msg == 'q':break if not msg or not qq_name or qq_name not in qq_name_dic:continue udp_client_socket.sendto(msg.encode('utf-8'),qq_name_dic[qq_name]) back_msg,addr=udp_client_socket.recvfrom(BUFSIZE) print('来自[%s:%s]的一条消息:\033[1;44m%s\033[0m' %(addr[0],addr[1],back_msg.decode('utf-8'))) udp_client_socket.close()
socket参数的详解
socket.socket(family=AF_INET,type=SOCK_STREAM,proto=0,fileno=None)
创建socket对象的参数说明:
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