blocks|key|1318426|text|对于C%2B%2B，标准的高级别答案将是boost.asio。具体来说，要将字符串转换为具有字符串的IP地址，为了获得ip地址的字符串表示形式，它具有字符串。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1318427|请检查ip地址对象的其他建设者+--使用原始字节可能比字符串更有效。|1318428|entityMap|0|LINK|mutability|MUTABLE|url|http://www.boost.org/doc/libs/release/libs/asio/index.html|1|http://www.boost.org/doc/libs/release/doc/html/boost_asio/reference/ip__address/from_string.html|2|http://www.boost.org/doc/libs/release/doc/html/boost_asio/reference/ip__address/to_string.html|3|http://www.boost.org/doc/libs/release/doc/html/boost_asio/reference/ip__address_v4/address_v4.html^0|G|A|0|16|3|1|1Z|3|2|0|A|5|3|0^^$0|@$1|2|3|4|5|6|7|T|8|@]|9|@$A|U|B|V|1|W]|$A|X|B|Y|1|Z]|$A|10|B|11|1|12]]|C|$]]|$1|D|3|E|5|6|7|13|8|@]|9|@$A|14|B|15|1|16]]|C|$]]|$1|F|3|-4|5|6|7|17|8|@]|9|@]|C|$]]]|G|$H|$5|I|J|K|C|$L|M]]|N|$5|I|J|K|C|$L|O]]|P|$5|I|J|K|C|$L|Q]]|R|$5|I|J|K|C|$L|S]]]]

For C++, the standard high-level answer would be <a href="http://www.boost.org/doc/libs/release/libs/asio/index.html" rel="nofollow">boost.asio</a>. Specifically, to convert a string into an IP address it has
<a href="http://www.boost.org/doc/libs/release/doc/html/boost_asio/reference/ip__address/from_string.html" rel="nofollow">ip::address::from_string</a> and to obtain a string representation of an ip address, it has <a href="http://www.boost.org/doc/libs/release/doc/html/boost_asio/reference/ip__address/to_string.html" rel="nofollow">to_string</a>.

Do check out <a href="http://www.boost.org/doc/libs/release/doc/html/boost_asio/reference/ip__address_v4/address_v4.html" rel="nofollow">other constructors</a> for the ip address objects -- using raw bytes is likely to be more efficient than strings.

blocks|key|2515104|text|如果您正在编写套接字应用程序，那么地址操作不太可能成为您最重要的考虑因素。当你有网络I/O需要担心的时候，不要浪费时间在这上面。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2515105|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

If you are writing a sockets app it's highly unlikely that address manipulation is going to be your most important consideration. Don't waste time on this when you have network I/O to worry about.

blocks|key|2873845|text|inet_ntop和inet_pton不支持IPv6区域，因此推荐的API只是getaddrinfo和getnameinfo，它们方便地与IP版本无关。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2873846|传递NI_NUMERICHOST等标志，以强制IP地址验证而不需要DNS解析。|2873847|http://msdn.microsoft.com/en-us/library/ms738532(VS.85).aspx|2873848|示例：|2873849|char*+input_str
struct+addrinfo+*result+=+NULL,+hints;
ZeroMemory(+&hints,+sizeof(hints)+);
hints.ai_flags+=+AI_NUMERICHOST;
hints.ai_family+=+AF_UNSPEC;
dwRetval+=+getaddrinfo(+input_string,+NULL,+&hints,+&result+);
if+(+dwRetval+!=+0+)+{
+++++/*+failure+*/
}|code-block|syntax|javascript|2873850|entityMap|0|LINK|mutability|MUTABLE|url^0|0|9|A|9|13|B|1F|B|0|2|E|0|0|1O|0|0|0|0^^$0|@$1|2|3|4|5|6|7|X|8|@$9|Y|A|Z|B|C]|$9|10|A|11|B|C]|$9|12|A|13|B|C]|$9|14|A|15|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|16|8|@$9|17|A|18|B|C]]|D|@]|E|$]]|$1|H|3|I|5|6|7|19|8|@]|D|@$9|1A|A|1B|1|1C]]|E|$]]|$1|J|3|K|5|6|7|1D|8|@]|D|@]|E|$]]|$1|L|3|M|5|N|7|1E|8|@]|D|@]|E|$O|P]]|$1|Q|3|-4|5|6|7|1F|8|@]|D|@]|E|$]]]|R|$S|$5|T|U|V|E|$W|I]]]]

<code>inet_ntop</code> and <code>inet_pton</code> do not support IPv6 zones and so the recommend APIs are simply <code>getaddrinfo</code> and <code>getnameinfo</code> which are conveniently IP version agnostic.

Pass flags such as <code>NI_NUMERICHOST</code> to force IP address validation without DNS resolution.

<a href="http://msdn.microsoft.com/en-us/library/ms738532(VS.85).aspx" rel="nofollow">http://msdn.microsoft.com/en-us/library/ms738532(VS.85).aspx</a>

example:

<pre><code>char* input_str
struct addrinfo *result = NULL, hints;
ZeroMemory( &amp;hints, sizeof(hints) );
hints.ai_flags = AI_NUMERICHOST;
hints.ai_family = AF_UNSPEC;
dwRetval = getaddrinfo( input_string, NULL, &amp;hints, &amp;result );
if ( dwRetval != 0 ) {
 /* failure */
}
</code></pre>

blocks|key|2515189|text|Poco图书馆有一组非常好的主机名/IP地址操作例程，还有很多其他非常好的东西。FreeBSD端口有点过时了，但是我们也许可以用一根锋利的棍子戳一下端口维护人员，让他更新它。哦，等等..。:)|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|2515190|entityMap|0|LINK|mutability|MUTABLE|url|http://pocoproject.org/^0|0|7|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

The <a href="http://pocoproject.org/" rel="nofollow">Poco Library</a> has a very nice set of hostname/IP address manipulation routines, and a lot of other really great stuff. The FreeBSD port is a bit out of date, but we might be able to poke the port-maintainer with a sharp stick and get him to update it. Oh, wait... :)

blocks|key|2873836|text|我已经意识到了ipv4+/+ipv6验证regexp，这是相当长和不平凡的产生。如果你愿意我可以和你分享。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2873837|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

I have the mind boogling ipv4 / ipv6 validating regexps around, which are quite long and non-trivial to produce. I can share if you want.

Is there a good high level library that can be used for IP address manipulation? I need to do things like:

<ul>
<li>Given a string find out if it is a valid IPv4/IPv6 address.</li>
<li>Have functionality like ntop and pton</li>
<li>etc</li>
</ul>

I can use the low level inet_ntop() etc. But is there a better library that handles these better and fast (c/c++/python)?

Efficient IP address c/c++ library on unix

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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是否有一个很好的高级库可以用于IP地址的操作？我需要做的事情是：给定一个字符串，看看它是否是有效的IPv4 4/IPv4 6地址。具有像ntop和pton这样的功能等我可以使用低级别的inet_ntop()等等，但是是否有一个更好的库来处理这些更好、更快(c/c++/python)？

问unix上高效IP地址c/c++库
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