在Ubuntu套接字（操作不允许） [英] Sockets on Ubuntu (operation not permitted)

问题描述

我newbee和只是让linux下C ++中我的第一个步骤。
所以我对一些插座任务。我以下指南，尤其是此内容之一。和code例子不工作。我开始用这样的：

I'm newbee and just making my first steps in c++ under linux. So I have some task about sockets. I'm following guides, especially this one. And code examples are not working. I started with this:

#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>

#define SOCK_PATH "echo_socket"

int main(void)
{
    int s, s2, t, len;
    struct sockaddr_un local, remote;
    char str[100];

    if ((s = socket(AF_UNIX, SOCK_STREAM, 0)) == -1) {
        perror("socket");
        exit(1);
    }

    local.sun_family = AF_UNIX;
    strcpy(local.sun_path, SOCK_PATH);
    unlink(local.sun_path);
    len = strlen(local.sun_path) + sizeof(local.sun_family);
    if (bind(s, (struct sockaddr *)&local, len) == -1) {
        perror("bind");
        exit(1);
    }
return 0;
}

我已经想通了，编译它（code :: Blocks的）必须有一个更多包括：

I've figured out that to compile it (Code::Blocks) there must be one more include:

#include <unistd.h>

但是，成功运行后我得到的消息绑定：不允许操作。哪里不对？我试图在根下运行它，它仍然是行不通的。

But after successful run I'm getting message "Bind: Operation not permitted". What is wrong? I've tried to run it under root and still it is not working.

推荐答案

。
您可以
 的#define SOCK_PATH的/ home /用户名/ echo_socket
它会正常运行。

Because of no permission. You can #define SOCK_PATH "/home/username/echo_socket" and it will run normally.

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