Python3 TCP和UDP小例子

TCP:
客户端:

import socket

HOST = '127.0.0.1'
PORT = 3333

s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

s.connect((HOST, PORT))
print("Connecte %s : %d OK" %(HOST, PORT))
data = s.recv(1024)
print("Receive: {}".format(data.decode()))
s.close()

服务器端:

import socket
import datetime

HOST = '0.0.0.0'
PORT = 3333

s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.bind((HOST, PORT))
s.listen(4)

while True:
    conn, addr = s.accept()
    print("Client %s connected!" %str(addr))
    dt = datetime.datetime.now()
    message = "Current time is " + str(dt)
    conn.send(message.encode())
    print("Send: {}".format(message))
    conn.close()

UDP:
客户端:

import socket

PORT = 3333
HOST = '127.0.0.1'

s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)

data = "Hello UDP!".encode()
s.sendto(data, (HOST, PORT))
print("Send: %s to %s : %s " %(data, HOST, PORT))

s.close()

服务器端:

import socket

HOST = '0.0.0.0'
PORT = 3333

s= socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
s.bind((HOST, PORT))

while True:
    data, addr = s.recvfrom(1024)
    print("Receive %s from %s" %(data.decode(), addr))

s.close()

以上均是windows 10下使用visual studio code + python3写的小例子，希望可以对读者有一定的的启发作用！