基于python中的TCP及UDP(详解)

ss = socket() # 创建服务器套接字
ss.bind() # 套接字与地址绑定
ss.listen() # 监听连接
inf_loop: # 服务器无限循环
 cs = ss.accept() # 接受客户端连接
 comm_loop: # 通信循环
  cs.recv()/cs.send() # 对话（接收/发送）
 cs.close() # 关闭客户端套接字
ss.close() # 关闭服务器套接字#（可选）

import socket
from time import ctime

HOST = ''
PORT = 8099
BUFSIZE = 1024
ADDR = (HOST, PORT)
tcpSerSock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
tcpSerSock.bind(ADDR)
tcpSerSock.listen(5)
while True:
 print("等待连接......")
 tcpCliSock, addr = tcpSerSock.accept()
 print("...接收到连接：", addr)
 while True:
  data = tcpSerSock.recv(BUFSIZE)
  if not data:
   break
  tcpCliSock.send('[%s] %s' % (bytes(ctime(), 'utf-8'), data))
 tcpCliSock.close()
tcpSerSock.close()

cs = socket() # 创建客户端套接字
cs.connect() # 尝试连接服务器
comm_loop: # 通信循环
 cs.send() / cs.recv() # 对话（发送/接收）
cs.close() # 关闭客户端套接字 

import socket

HOST = 'localhost'
PORT = 8099
BUFSIZE = 1024
ADDR = (HOST, PORT)

tcpCliSock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
tcpCliSock.connect(ADDR)
while True:
 data = input("> ")
 if not data:
  break
 tcpCliSock.send(data)
 data = tcpCliSock.recv(BUFSIZE)
 if not data:
  break
 print(data)
tcpCliSock.close()

ss = socket() # 创建服务器套接字
ss.bind() # 绑定服务器套接字
inf_loop: # 服务器无限循环
 cs = ss.recvfrom()/ss.sendto() # 关闭（接收/发送）
ss.close() # 关闭服务器套接字

import socket
from time import ctime

HOST = ''
PORT = 8099
BUFSIZE = 1024
ADDR = (HOST, PORT)
udpSerSock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
udpSerSock.bind(ADDR)
while True:
 print("等待连接......")
 data, addr = udpSerSock.recvfrom(BUFSIZE)
 udpSerSock.sendto('[%s] %s' % (ctime(), data), addr)
 print("...接收到连接：", addr)
udpSerSock.close()

cs = socket() # 创建客户端套接字
comm_loop: # 通信循环
 cs.sendto() / cs.recvfrom() # 对话（发送/接收）
cs.close() # 关闭客户端套接字

import socket

HOST = 'localhost'
PORT = 8099
BUFSIZE = 1024
ADDR = (HOST, PORT)

udpCliSock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
udpCliSock.connect(ADDR)
while True:
 data = input("> ")
 if not data:
  break
 udpCliSock.sendto(data, ADDR)
 data, ADDR = udpCliSock.recvfrom(BUFSIZE)
 if not data:
  break
 print(data)
udpCliSock.close()