如何以编程方式断开TCP/IP套接字连接？

import socket

# 创建套接字对象
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

# 连接到远程主机
sock.connect(("远程主机IP", 端口号))

# 关闭套接字连接
sock.close()

import java.net.Socket;

public class SocketExample {
    public static void main(String[] args) throws Exception {
        // 创建套接字对象
        Socket socket = new Socket("远程主机IP", 端口号);

        // 关闭套接字连接
        socket.close();
    }
}

#include <sys/socket.h>

int main() {
    // 创建套接字对象
    int sockfd = socket(AF_INET, SOCK_STREAM, 0);

    // 关闭套接字连接
    close(sockfd);

    return 0;
}