如何填充sockaddr_storage? [英] How to fill sockaddr_storage?

问题描述

我正在尝试在应用程序中使用 sockaddr_storage 结构.我很好奇如何填充它.例如，我有以下代码:

I am trying to use sockaddr_storage struct in my application. I am curious how to fill it. For example I have following code:

sHostAddr.sin_family = AF_INET;
sHostAddr.sin_addr.s_addr = inet_addr (cpIPAddress);

如果使用 sockaddr_storage 结构如何替换它?我知道有一些char数组，我想我可以使用一些数组索引偏移量得到等效的代码?

How can I replace it if I use sockaddr_storage struct? I know that there are some char arrays, and I suppose I can get an equivalent code using some array index offsets?

非常感谢.

推荐答案

名称是提示， sockaddr_storage 仅用于存储，不用于访问.在具有特定协议结构的联合中使用:

The name is the hint, sockaddr_storage is for storage only, not for accessing. Use in a union with specific protocol structures:

union {
  struct sockaddr         sa;
  struct sockaddr_in      s4;
  struct sockaddr_in6     s6;
  struct sockaddr_storage ss;
} addr;
memset (&addr.s4, 0, sizeof(struct sockaddr_in));
addr.s4.sin_family = AF_INET;
addr.s4.sin_addr.s_addr = INADDR_ANY;

或 memcpy ，例如

struct sockaddr_storage storage;
struct sockaddr_in sin;

memset (&sin, 0, sizeof (sin));
sin.sin_family = AF_INET
sin.sin_addr.s_addr = inet_addr ("127.0.0.1");
memcpy (&storage, &sin, sizeof (sin));

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