关于套接字socket的网络通信。&聊天系统 聊天软件

1.UDP，我这里暂时没写代码，懒得写了，

2.TCP：

2.1TCP服务端

import socket
from multiprocessing import Process

# 开两个进程，然后一个接收，一个发送
def receive(con):
    while True:
        recv_cmd = con.recv(1024)
        print(recv_cmd.decode("utf-8"))


def send(con):
    while True:
        msg = input("")
        con.send(f"{' '*20}friend:{msg}\n".encode("utf-8"))

if __name__ == "__main__":
    phone = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    phone.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
    phone.bind(("127.0.0.1", 8080))  # 0-1024给操作系统用    --65535
    phone.listen(5)
    # 等待链接
    con, b = phone.accept()
    print("The connection is complete. You can chat")
    p_receive = Process(target=receive, args=(con,))
    p_receive.start()
    send(con)

View Code

2.2TCP客户端

import socket
from multiprocessing import Process
# 开两个进程，然后一个接收，一个发送
def receive(phone):
    while True:
        recv_cmd = phone.recv(1024)
        print(recv_cmd.decode("utf-8"))

def send(phone):
    while True:
        msg = input("")
        phone.send(f"{' '*30}friend:{msg}\n".encode("utf-8"))

if __name__ == "__main__":
    phone = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    phone.connect(("127.0.0.1", 8080))
    print("The connection is complete. You can chat")
    p_receive = Process(target=receive, args=(phone,))
    p_receive.start()
    send(phone)

View Code

3两者区别：

　　TCP：实时连接，安全性高

　　UDP：不连接直接发送，管你能不能收到呢

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