Function mt_tcp_create_sock

adapter/micro_thread/mt_api.cpp:87–118

}

int mt_tcp_create_sock(void)
{
    int fd;
    int flag;

    fd = ::socket(AF_INET, SOCK_STREAM, 0);
    if (fd < 0)
    {
        MTLOG_ERROR("create tcp socket failed, error: %m");
        return -1;
    }

    flag = fcntl(fd, F_GETFL, 0);
    if (flag == -1)
    {
        ::close(fd);
        MTLOG_ERROR("get fd flags failed, error: %m");
        return -2;
    }

    if (flag & O_NONBLOCK)
        return fd;

    if (fcntl(fd, F_SETFL, flag | O_NONBLOCK | O_NDELAY) == -1)
    {
        ::close(fd);
        MTLOG_ERROR("set fd flags failed, error: %m");
        return -3;
    }

    return fd;
}

static TcpKeepConn* mt_tcp_get_keep_conn(struct sockaddr_in* dst, int& sock)
{