基于UDP协议的socket
PS：udp是无连接的，先启动那一端都不会报错
server端
import socket # 导入socket模块udp_sk = socket.socket(type=socket.SOCK_DGRAM) # 创建一个服务器套接字udp_sk.bind(('127.0.0.1', 8080)) # 绑定服务器套接字msg, addr = udp_sk.recvfrom(1024) # 接收客户端信息print(msg) # 输出客户端的信息udp_sk.sendto(b'hi', addr) # 向客户端发送信息udp_sk.close() # 关闭服务器套接字
client端
import socketsk = socket.socket(type=socket.SOCK_DGRAM)ip_port = ('127.0.0.1', 8080)udp_sk = sk.sendto(b'hello', ip_port)msg, addr = udp_sk.recvfrom(1024)print(msg.decode('utf-8'))
QQ聊天
server端
import socketip_port = ('127.0.0.1', 8080)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' % (str(addr), qq_msg.decode('utf-8'))) back_msg = input('回复消息:').strip() udp_server_sock.sendto(back_msg.encode('utf-8'), addr)
client端
import socketBUFSIZE = 1024udp_client_socket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)qq_name_dic = {'路人甲': ('127.0.0.1', 8080),'路人乙': ('127.0.0.1', 8080),'路人丙': ('127.0.0.1', 8080)}while True: qq_name = input('请选择聊天对象,输入q结束程序：').strip() if qq_name == 'q': break 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]) msg, addr = udp_client_socket.recvfrom(BUFSIZE) print('来自 %s 的一条消息:%s'%(str(addr), msg.decode('utf-8')))udp_client_socket.close()
时间服务器
server端
import socketimport timesk = socket.socket()sk.bind(('127.0.0.1', 8090))sk.listen()while True: conn, addr = sk.accept() while True: ret = conn.recv(1024).decode('utf-8') time.sleep(1) new_time = time.strftime(ret, time.localtime(time.time())) conn.send(new_time.encode('utf-8'))
client端
import socketsk = socket.socket()sk.connect(('127.0.0.1', 8090))while True: sk.send('%Y-%m-%d %X'.encode('utf-8')) msg = sk.recv(1024) print('' + str(msg.decode('utf-8')), end='', flush=True)
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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