今日内容:
1, tcp协议的聊天
服务器(server):
# 服务器:<br>import socket
sk = socket.socket() # 创建 套接字
sk.bind(('127.0.0.1', 9090)) # 绑定 端口
sk.listen()# 监听
flag = True
while flag:
con, addr = sk.accept()
while 1:
msg = con.recv(1024).decode('utf-8')
print(f'客户端:{addr}发送了:{msg}')
if msg == 'q': break
anime = input('>>>')
con.send(anime.encode('utf-8'))
if anime.lower() == 'q':
flag = False
break
con.close()
sk.close()
客户端(client):
# 客户端
import socket
sk = socket.socket()
sk.connect(('127.0.0.1', 9090))
while 1:
user = input('>>>')
if user.lower() == 'q': break
sk.send(user.encode('utf-8'))
msg = sk.recv(1024).decode('utf-8')
print(msg)
if msg == 'q': break
sk.close()
阻塞: 让程序停下 堵住.
accept() 等待连接
recv() 等待接收客户端打印的消息
input() 等待用户输入.
socket.socket(family = socket.AF_INET, type = SOCK_STREAM )
参数1: family: 套接字类型
family = socket.AF_INET 采用网络形式通信的套接字
family = socket.AF_UNIX 采用文件形式通信的套接字
参数2 type : 通信协议类型 tcp协议, udp 协议
tcp: SOCK_STREAM
udp: SOCK_DGRAM
2, udp协议的聊天
sk = socket.socket(type=socket.SOCK_DGRAM)
sk.recvfrom
服务器(server):
# 服务器
from socket import socket, SOCK_DGRAM
sk = socket(type=SOCK_DGRAM)
sk.bind(('127.0.0.1', 9090))
while 1:
msg_r, addr = sk.recvfrom(1024)
msg_r = msg_r.decode('utf-8')
print(f'客户端:{addr},发来消息:{msg_r}')
if msg_r.lower() == 'q': continue
msg_s = input('>>>')
sk.sendto(msg_s.encode('utf-8'), addr)
if msg_s.lower() == 'q': break
sk.close()
客户端(client):
# 客户端
from socket import socket, SOCK_DGRAM
sk = socket(type=SOCK_DGRAM)
while 1:
msg_s = input('>>>')
sk.sendto(msg_s.encode('utf-8'), ('127.0.0.1', 9090))
if msg_s.lower() == 'q': break
msg_r, addr = sk.recvfrom(1024)
msg_r = msg_r.decode('utf-8')
print(f'客户端:{addr},发来消息:{msg_r}')
if msg_r.lower() == 'q': break
sk.close()
3, 基于udp协议的时间同步机制.
服务器(server):
# 基于 udp协议 的服务器
import socket
import time
sk = socket.socket(type=socket.SOCK_DGRAM)
sk.bind(('127.0.0.1',9090))
while 1:
tm_format,addr = sk.recvfrom(1024)
tm_format = tm_format.decode('utf-8')# %Y-%m\%d %H:%M:%S
local_tm = time.strftime(tm_format)# 获取到了对应格式的当前时间
sk.sendto(local_tm.encode('utf-8'),addr)# 返回给客户端
sk.close()
客户端(client):
# 基于 udp 协议 的 客户端
import socket
import time
sk = socket.socket(type=socket.SOCK_DGRAM)
tm_format = input('>>>')
while 1:
sk.sendto(tm_format.encode('utf-8'),('127.0.0.1',9090))
local_tm,addr = sk.recvfrom(1024)
print(local_tm.decode('utf-8'))
time.sleep(2)
4, 在pycharm上实现着色
'\033[0;32;40m欢迎使用学生选课系统\033[0m' 这是一个字符串, 着色其实就是 用 \033[X1;X2;X3m 和 \033[0m 包围起来的字符串 会改变颜色. X2 是背景色, X3 是字体颜色.
详情内容请见:https://www.cnblogs.com/Eva-J/p/8330517.html
服务器代码:
import socket
sk = socket.socket(type=socket.SOCK_DGRAM)# udp协议
sk.bind(('127.0.0.1',9090))
dic = {'alex':'\033[0;33;42m','太白':'\033[0;35;40m'}
while 1:
msg_r,addr = sk.recvfrom(1024)# 接收来自哪里的消息
msg_r = msg_r.decode('utf-8')# alex : 我要退学
# 对于msg_r,通过':'分割,获取下标为0的,也就是name,再去掉name的左右两边的空格
name = msg_r.split(':')[0].strip()
color = dic.get(name,'')# 获取字典中 name所对应的 颜色值
print('%s%s \033[0m'%(color,msg_r))
if msg_r == 'q':# 如果当前客户端想要断开连接
continue # 服务器端不应该继续通话了,应该等待接收另一个客户端的连接,返回到recvfrom
msg_s = input('>>>')
sk.sendto(msg_s.encode('utf-8'), addr)
if msg_s == 'q':
break
sk.close()
客户端代码:
import socket
sk = socket.socket(type=socket.SOCK_DGRAM)
name = input('请输入您的名字:>>>')
while 1:
msg_s = input('>>>')
msg_s = name + " : "+msg_s
sk.sendto(msg_s.encode('utf-8'),('127.0.0.1',9090))# 发给谁一条消息
if msg_s is 'q':
break
msg_r,addr = sk.recvfrom(1024)
msg_r = msg_r.decode('utf-8')
print(msg_r)
if msg_r == 'q':
break
sk.close()