linux 关闭套接字

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/socket.h>
#include <netinet/in.h>

int main() {
    int sockfd;
    struct sockaddr_in serv_addr;

    // 创建套接字
    sockfd = socket(AF_INET, SOCK_STREAM, 0);
    if (sockfd < 0) {
        perror("socket");
        exit(EXIT_FAILURE);
    }

    // 绑定地址
    memset(&serv_addr, 0, sizeof(serv_addr));
    serv_addr.sin_family = AF_INET;
    serv_addr.sin_addr.s_addr = INADDR_ANY;
    serv_addr.sin_port = htons(8080);

    if (bind(sockfd, (struct sockaddr *)&serv_addr, sizeof(serv_addr)) < 0) {
        perror("bind");
        close(sockfd);
        exit(EXIT_FAILURE);
    }

    // 监听连接
    if (listen(sockfd, 5) < 0) {
        perror("listen");
        close(sockfd);
        exit(EXIT_FAILURE);
    }

    // 接受连接
    int newsockfd = accept(sockfd, NULL, NULL);
    if (newsockfd < 0) {
        perror("accept");
        close(sockfd);
        exit(EXIT_FAILURE);
    }

    // 处理连接...

    // 关闭套接字
    close(newsockfd);
    close(sockfd);

    return 0;
}