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通过套接字描述符了解家族

[英]Knowing the family with Socket Descriptor

I have the socket descriptor which is the return value of socket API. 我有套接字描述符,它是套接字API的返回值。 How can I use only this to know the family? 我如何仅以此来认识家人?

您可以调用getsockname ,但只能在套接字绑定之后。

(Windows-specific): you can get SO_PROTOCOL_INFO socket option. (特定于Windows):您可以获取SO_PROTOCOL_INFO套接字选项。

If successful, it would give you WSAPROTOCOL_INFO structure with iAddressFamily member. 如果成功,它将为您提供带有iAddressFamily成员的WSAPROTOCOL_INFO结构。

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