python tcp 发送和接收

import socket


def main():
    # 1. 创建tcp的套接字
    tcp_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

    # 2. 链接服务器
    # tcp_socket.connect(("192.168.33.11", 7890))
    server_ip = input("请输入要链接的服务器的ip:")
    server_port = int(input("请输入要链接的服务器的port:"))
    server_addr = (server_ip, server_port)
    tcp_socket.connect(server_addr)

    # 3. 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"))

    # 4. 关闭套接字
    tcp_socket.close()


if __name__ == "__main__":
    main()

import socket


def main():
    # 1. 买个手机(创建套接字 socket)
    tcp_server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

    # 2. 插入手机卡(绑定本地信息 bind)
    tcp_server_socket.bind(("", 7890))

    # 3. 将手机设置为正常的 响铃模式(让默认的套接字由主动变为被动 listen)
    tcp_server_socket.listen(128)

    print("-----1----")
    # 4. 等待别人的电话到来(等待客户端的链接 accept)
    new_client_socket, client_addr = tcp_server_socket.accept()
    print("-----2----")

    print(client_addr)

    # 接收客户端发送过来的请求
    recv_data = new_client_socket.recv(1024)
    print(recv_data)

    # 回送一部分数据给客户端
    new_client_socket.send("hahahghai-----ok-----".encode("utf-8"))

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


if __name__ == "__main__":
    main()