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网络编程(套接字)之UDP协议通信以及基于socketserver模块实现并发效果等相关内容-33

作者:互联网

1.基于udp协议的套接字通信

# server.py

# TCP VS UDP协议
# 1、可靠性
# tcp协议是可靠协议:
#   对方必须回复一个ack确认信息,才会将自己这端的数据从内存中删除

# udp协议不可靠:
#   发送一条消息就会立即删除,不管对方是否接收到

# 2、有无链接
# tcp有链接,udp无链接

# 3、传输数据的效率
# udp更高

# 4、粘包问题
# udp协议称之为数据报协议,每次发送都是一个完整的数据报,一个发送唯一对应一个接收
# 所以udp协议没有粘包问题
from socket import *
import time

server = socket(AF_INET, SOCK_DGRAM)
server.bind(('127.0.0.1', 8080))

while True:
   data, client_addr = server.recvfrom(1024)
   time.sleep(10)
   server.sendto(data.upper(), client_addr)
   
   
# client.py

from socket import *

client = socket(AF_INET, SOCK_DGRAM)

while True:
   msg = input('>>: ').strip()
   client.sendto(msg.encode("utf-8"), ('127.0.0.1', 8080))

   data, server_addr = client.recvfrom(1024)
   print(data.decode('utf-8'))

2.基于socketserver模块实现并发tcp

# server.py

# from socket import *
#
#
# server=socket(AF_INET,SOCK_STREAM)
# server.bind(('127.0.0.1',8080))
# server.listen(5)
#
# while True:
#     conn,addr=server.accept()
#     print(addr)
#
#     while True:
#         try:
#             data=conn.recv(1024)
#             if len(data) == 0:break
#             conn.send(data.upper())
#         except Exception:
#             break
#
#     conn.close()

# 支持并发版本
import socketserver


class MyRequestHandler(socketserver.BaseRequestHandler):
   def handle(self):  # 处理通信
       print(self.client_address)
       while True:
           try:
               data = self.request.recv(1024)  # self.request=>conn
               if len(data) == 0: break
               self.request.send(data.upper())
           except Exception:
               break
       self.request.close()


if __name__ == '__main__':
   s = socketserver.ThreadingTCPServer(('127.0.0.1', 8080), MyRequestHandler, bind_and_activate=True)
   s.serve_forever()

   
# client.py

from socket import *

client=socket(AF_INET,SOCK_STREAM)
client.connect(('127.0.0.1',8080))

while True:
   msg=input(">>: ").strip()
   if len(msg) == 0:
       continue

   client.send(msg.encode('utf-8'))
   data=client.recv(1024)
   print(data.decode('utf-8'))

3.基于socketserver模块实现并发udp

# server.py

import socketserver


class MyRequestHandler(socketserver.BaseRequestHandler):
   def handle(self):  # 处理通信
       data,server=self.request
       server.sendto(data.upper(),self.client_address)

if __name__ == '__main__':
   s = socketserver.ThreadingUDPServer(('127.0.0.1', 8080), MyRequestHandler, bind_and_activate=True)
   s.serve_forever()

   
# client.py

from socket import *

client = socket(AF_INET, SOCK_DGRAM)

while True:
   msg = input('>>: ').strip()
   client.sendto(msg.encode("utf-8"), ('127.0.0.1', 8080))

   data, server_addr = client.recvfrom(1024)
   print(data.decode('utf-8'))

 

标签:UDP,socket,socketserver,True,server,client,接字,data
来源: https://www.cnblogs.com/usherwang/p/13525237.html