python 基于UDP协议套接字通信的实现

'''
from socket import *

server=socket(AF_INET,SOCK_DGRAM)
	- 这里代指的是一种数据报协议，数据报协议指的就是udp协议(补充: 数据报就是自己utp协议中有自己的头，有自己的数据部分)

server.bind('IP', PORT)

bytes类型的数据, client_addr = server.recvfrom(1024)
  - client_addr是一个2元组的形式: 第一个参数是客户端的IP地址, 第二个参数是客户端发送数据进程软件的端口号.

server.sendto(bytes类型处理过后的数据, client_addr)

server.close()
'''
from socket import *
server=socket(AF_INET,SOCK_DGRAM)
IP_PORT=('127.0.0.1',8123)
server.bind(IP_PORT)
while True:
  print("server wait...")
  data_bytes,client_addr=server.recvfrom(1024)
  server.sendto(data_bytes.upper(),client_addr)
  print('data_bytes:', data_bytes)
  print('client_addr:', client_addr)
server.close()

'''
from socket import *

client=socket(AF_INET,SOCK_DGRAM)

client.sendto(bytes类型的数据, ('服务端IP', 服务端端口))

data_bytes, client_addr = client.recvfrom(1024)

client.close()
'''
import socket

client = socket.socket(family=socket.AF_INET, type=socket.SOCK_DGRAM)
IP_PORT=('127.0.0.1',8123)
while True:
  msg=input("请输入要发送的消息》》》").strip()
  client.sendto(msg.encode("utf-8"),IP_PORT)
  data_bytes,server_addr=client.recvfrom(1024)
  print("data_bytes:",data_bytes)
  print("server_addr:",server_addr)
client.close()

import socket

server = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) # 数据报协议-》udp
server.bind(('127.0.0.1', 8084))

data, client_addr = server.recvfrom(1024) # b'hello'==>b'h'
print('第一次：', client_addr, data)

data, client_addr = server.recvfrom(1024) # b'world' =>b'world'
print('第二次：', client_addr, data)
#
data,client_addr=server.recvfrom(1024)
print('第三次：',client_addr,data)

server.close()

import socket

client = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) # 数据报协议-》udp

client.sendto('hello'.encode('utf-8'), ('127.0.0.1', 8084))
client.sendto('world'.encode('utf-8'), ('127.0.0.1', 8084))
client.sendto(''.encode('utf-8'),('127.0.0.1',8084))

client.close()

from socket import *
from time import strftime

server=socket(AF_INET,SOCK_DGRAM)
server.bind(("127.0.0.1",8908))
print("server run...")
while True:
  msg,addr=server.recvfrom(1024)
  print(f"[{addr[0]}]链接成功")
  if not msg:
    fmt = "%Y-%m-%d %X"
  else:
    fmt=msg.decode("utf-8")
  time_fmt=strftime(fmt)
  server.sendto(time_fmt.encode("utf-8"),addr)

from socket import *
client=socket(AF_INET,SOCK_DGRAM)
print("输入时间格式，返回格式化后的时间")
ip_port=("127.0.0.1",8908)
while True:
  inp=input("请输入时间格式（例：%Y-%m-%d）>:").strip()
  client.sendto(inp.encode("utf-8"),ip_port)
  date=client.recv(1024)
  print(date.decode("utf-8"))

#_*_coding:utf-8_*_
__author__="淘小欣"
import socket
ip_port = ('127.0.0.1', 8081)
UDP_server_sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) #买手机
UDP_server_sock.bind(ip_port)
print("Server...")
while True:
  ml_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], ml_msg.decode('utf-8')))
  back_msg = input('回复消息: ').strip()

  UDP_server_sock.sendto(back_msg.encode('utf-8'), addr)

#_*_coding:utf-8_*_
__author__="淘小欣"
import socket
BUFSIZE=1024
UDP_client_socket=socket.socket(socket.AF_INET,socket.SOCK_DGRAM)
MiLiao_name_dic={
  "淘小欣":("127.0.0.1",8881),
  "shawn":("127.0.0.1",8881),
  "派大星":("127.0.0.1",8881),
  "派大星的真心话":("127.0.0.1",8881)
}
while True:

  ml_name = input('请选择聊天对象: ').strip()
  while True:
    msg = input('请输入消息,回车发送: ').strip()
    if msg == 'quit': break
    if not msg or not ml_name or ml_name not in MiLiao_name_dic: continue
    UDP_client_socket.sendto(msg.encode('utf-8'), MiLiao_name_dic[ml_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()

#_*_coding:utf-8_*_
__author__="淘小欣"
import socket
BUFSIZE=1024
UDP_client_socket=socket.socket(socket.AF_INET,socket.SOCK_DGRAM)
MiLiao_name_dic={
  "淘小欣":("127.0.0.1",8881),
  "shawn":("127.0.0.1",8881),
  "派大星":("127.0.0.1",8881),
  "派大星的真心话":("127.0.0.1",8881)
}
while True:

  ml_name = input('请选择聊天对象: ').strip()
  while True:
    msg = input('请输入消息,回车发送: ').strip()
    if msg == 'quit': break
    if not msg or not ml_name or ml_name not in MiLiao_name_dic: continue
    UDP_client_socket.sendto(msg.encode('utf-8'), MiLiao_name_dic[ml_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()