linux 本地 socket

#include <sys/socket.h>
#include <sys/un.h>
#include <unistd.h>
#include <stdio.h>

int main() {
    int server_fd, client_fd;
    struct sockaddr_un addr;
    socklen_t len;

    // 创建Socket
    server_fd = socket(AF_UNIX, SOCK_STREAM, 0);
    if (server_fd == -1) {
        perror("socket");
        return 1;
    }

    // 绑定Socket到文件
    addr.sun_family = AF_UNIX;
    strncpy(addr.sun_path, "/tmp/mysocket", sizeof(addr.sun_path) - 1);
    unlink("/tmp/mysocket");
    if (bind(server_fd, (struct sockaddr *)&addr, sizeof(addr)) == -1) {
        perror("bind");
        close(server_fd);
        return 1;
    }

    // 监听连接
    if (listen(server_fd, 5) == -1) {
        perror("listen");
        close(server_fd);
        return 1;
    }

    // 接受连接
    client_fd = accept(server_fd, NULL, &len);
    if (client_fd == -1) {
        perror("accept");
        close(server_fd);
        return 1;
    }

    // 读取数据并打印
    char buf[1024];
    ssize_t n = read(client_fd, buf, sizeof(buf));
    if (n > 0) {
        printf("Received: %s
", buf);
    }

    // 关闭连接
    close(client_fd);
    close(server_fd);
    unlink("/tmp/mysocket");
    return 0;
}

#include <sys/socket.h>
#include <sys/un.h>
#include <unistd.h>
#include <stdio.h>

int main() {
    int client_fd;
    struct sockaddr_un addr;

    // 创建Socket
    client_fd = socket(AF_UNIX, SOCK_STREAM, 0);
    if (client_fd == -1) {
        perror("socket");
        return 1;
    }

    // 连接到服务器
    addr.sun_family = AF_UNIX;
    strncpy(addr.sun_path, "/tmp/mysocket", sizeof(addr.sun_path) - 1);
    if (connect(client_fd, (struct sockaddr *)&addr, sizeof(addr)) == -1) {
        perror("connect");
        close(client_fd);
        return 1;
    }

    // 发送数据
    const char *msg = "Hello, Server!";
    write(client_fd, msg, strlen(msg));

    // 关闭连接
    close(client_fd);
    return 0;
}