I have a server application with a listening socket opened on a specific IP port. How can I allow the socket to enable incoming connections from just one specified IP address?
您必须使用一些防火墙软件来限制对该端口的传入请求，或者关闭您不想服务的已接受连接（基于accept返回的套接字地址）。
可能有一些库可以为您做到这一点，但socket API没有任何自动实现的功能。
当您接受连接时，您可以在接受后检查sockaddr，看看它是否来自正确的地址。如果没有，则立即关闭accept返回的连接套接字。
您必须使用accept（）接受连接，如果不需要，则关闭连接（如果您的协议支持，则可能会发送错误响应）。这对于大多数应用程序来说已经足够好了。
试试：libauth，这是一种强大的访问控制方式http://linux.die.net/man/3/libauth
I m getting this linker error. I know a way around it, but it s bugging me because another part of the project s linking fine and it s designed almost identically. First, I have namespace LCD. Then I ...
I have been searching for sample code creating iterator for my own container, but I haven t really found a good example. I know this been asked before (Creating my own Iterators) but didn t see any ...
Is there an equivalent to tidy for HTML code for C++? I have searched on the internet, but I find nothing but C++ wrappers for tidy, etc... I think the keyword tidy is what has me hung up. I am ...
I m new to C++ and am wondering how much time I should invest in learning how to implement template classes. Are they widely used in industry, or is this something I should move through quickly?
Given a 10 digit Telephone Number, we have to print all possible strings created from that. The mapping of the numbers is the one as exactly on a phone s keypad. i.e. for 1,0-> No Letter for 2->...
Why is it when i do the following i get errors when relating to with wchar_t? namespace Foo { typedef std::wstring String; } Now i declare all my strings as Foo::String through out the program, ...
I cannot figure out how to marshal a C++ CBitmap to a C# Bitmap or Image class. My import looks like this: [DllImport(@"test.dll", CharSet = CharSet.Unicode)] public static extern IntPtr ...
Is it possible to check with the means of pure X11/Xlib only whether the given window is iconified/minimized, and, if it is, how?
