网络编程初识

网络七层模型

笔记1

笔记2

tcp聊天室

snd_tcp.py

# -*- coding: utf-8 -*-
# @Time    : 2019/11/28 11:03
# @Author  : Han lei
# @Email   : hanlei5012@163.com
# @File    : snd_tcp.py
# @Software: PyCharm
import socket
import threading


def snd_snd():
    while 1:
        snd_data = input()
        s.send(snd_data.encode())


def snd_rec():
    while 1:
        rec_data = s.recv(1024)
        print(f'服务器：{rec_data.decode()}')

if __name__ == "__main__":
    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    s.connect(('10.25.58.132',8000))
        # t1 = threading.Thread(target=snd_snd())

    t1 = threading.Thread(target=snd_snd)
    t2 = threading.Thread(target=snd_rec)

    t1.start()
    t2.start()
    t1.join()
    t2.join()

serv_tcp.py

# -*- coding: utf-8 -*-
# @Time    : 2019/11/28 11:02
# @Author  : Han lei
# @Email   : hanlei5012@163.com
# @File    : serv_tcp.py
# @Software: PyCharm
import socket
import threading



s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.bind(('127.0.0.1',8000))
s.listen(5)

sock,sock_addr = s.accept()

def serv_rec():
    while True:
        data = sock.recv(1024)
        print(f'客户端：{data.decode()}')
def serv_snd():
    while True:
        snd_data = input()
        sock.send(snd_data.encode())

t1 = threading.Thread(target=serv_rec)
t2 = threading.Thread(target=serv_snd)

t1.start()
t2.start()
t1.join()
t2.join()

udp聊天室

snd_udp.py

# -*- coding: utf-8 -*-
# @Time    : 2019/11/28 9:41
# @Author  : Han lei
# @Email   : hanlei5012@163.com
# @File    : serv_udp.py
# @Software: PyCharm
import socket
def main():
    s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
    s.bind(('127.0.0.1',1234))
    while True:
        snd_data = input()
        s.sendto(snd_data.encode(), ('127.0.0.1', 8000))
        rec_data = s.recv(1024)
        print(rec_data.decode())
if __name__ == '__main__':
    main()

serv_udp.py

# -*- coding: utf-8 -*-
# @Time    : 2019/11/28 9:41
# @Author  : Han lei
# @Email   : hanlei5012@163.com
# @File    : serv_udp.py
# @Software: PyCharm
import socket
# SOCK_DGRAM   udp模式
def main():
    s = socket.socket(socket.AF_INET,socket.SOCK_DGRAM)
    s.bind(('127.0.0.1', 8000))
    while True:
        rec_data = s.recv(1024)
        print(rec_data.decode())
        snd_data = input()
        s.sendto(snd_data.encode(),('127.0.0.1',1234))
if __name__ == '__main__':
    main()

另：

1. pyqt5 做界面的,可以用这个和网络知识自己做一个飞秋
2. TCP/IP详解卷一，可以学各种协议
3. 鸟哥的linux私房菜，可以学linux
4. Bind()作用：（接收方一定要有bind，要不发送端不知道往哪发）
5. 127.0.0.1 是本机的地址
6. 临界资源：多个线程或进程操作资源