tcp

tcp客户端

import socket


def main():
    # 创建套接字
    tcp_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    # 连接服务器
    # tcp_socket.connect("192.168.33.11",7809)
    server_ip = input("请输入要连接的服务器")
    server_port = int(input("请输入要链接的服务器的端口"))
    server_addr = (server_ip, server_port)
    tcp_socket.connect(server_addr)
    # 发送数据/接收数据
    send_data = input("请输入要发送的数据")
    tcp_socket.send(send_data.encode("utf-8"))
    # 关闭套接字
    tcp_socket.close()


if __name__ == "__main__":
    main()

E:\python_project\NetWork\venv\Scripts\python.exe E:/python_project/NetWork/TcpClient.py
请输入要连接的服务器192.168.29.2
请输入要链接的服务器的端口8080
请输入要发送的数据ewrefeqw

Process finished with exit code 0

tcp客户端.png

TCP服务端

import socket


def main():
    # 创建套接字
    tcp_server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    # 绑定本地信息
    tcp_server_socket.bind(("", 8080))
    # 让套接字由主动变为被动
    tcp_server_socket.listen(128)
    # 等待客户端的连接
    new_client_socket, client_addres = tcp_server_socket.accept()
    print(new_client_socket, client_addres)
    # 接收客户端发送过来的请求
    recv_data = new_client_socket.recv(1024)
    print(recv_data.decode("gbk"))
    # 回送数据给客户端
    new_client_socket.send("我接收到了".encode("utf-8"))
    # 关闭套接字
    new_client_socket.close()
    tcp_server_socket.close()


if __name__ == "__main__":
    main()

E:\python_project\NetWork\venv\Scripts\python.exe E:/python_project/NetWork/TcpServer.py
<socket.socket fd=496, family=AddressFamily.AF_INET, type=SocketKind.SOCK_STREAM, proto=0, laddr=('192.168.29.2', 8080), raddr=('192.168.29.2', 56825)> ('192.168.29.2', 56825)
你好

Process finished with exit code 0

tcp服务端.png

循环为多个客户端服务

import socket


def main():
    # 创建套接字
    tcp_server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    # 绑定本地信息
    tcp_server_socket.bind(("", 8080))
    # 让套接字由主动变为被动
    tcp_server_socket.listen(128)
    # 这个while循环为多个客户端服务
    while True:
        # 等待客户端的连接
        new_client_socket, client_addres = tcp_server_socket.accept()
        print(new_client_socket, client_addres)
        # 这个while为一个客户端多次使用服务
        while True:
            # 接收客户端发送过来的请求
            recv_data = new_client_socket.recv(1024)

            # 客户端发送关闭，我们要解阻塞，断开当前客户端的连接，给其他客户端建立连接的机会
            if recv_data:
                print(recv_data.decode("gbk"))
                # 回送数据给客户端
                new_client_socket.send("我接收到了".encode("utf-8"))
            else:
                print("客户端断开了连接")
                break

        # 关闭套接字
        new_client_socket.close()
    tcp_server_socket.close()


if __name__ == "__main__":
    main()

E:\python_project\NetWork\venv\Scripts\python.exe E:/python_project/NetWork/TcpServer.py
<socket.socket fd=424, family=AddressFamily.AF_INET, type=SocketKind.SOCK_STREAM, proto=0, laddr=('192.168.29.2', 8080), raddr=('192.168.29.2', 61175)> ('192.168.29.2', 61175)
dada
dada
dada
客户端断开了连接
<socket.socket fd=472, family=AddressFamily.AF_INET, type=SocketKind.SOCK_STREAM, proto=0, laddr=('192.168.29.2', 8080), raddr=('192.168.29.2', 61178)> ('192.168.29.2', 61178)
关闭
关闭
关闭
客户端断开了连接
<socket.socket fd=472, family=AddressFamily.AF_INET, type=SocketKind.SOCK_STREAM, proto=0, laddr=('192.168.29.2', 8080), raddr=('192.168.29.2', 61179)> ('192.168.29.2', 61179)
dada
dada
dada
客户端断开了连接

多个客户端服务.png