October 2004
Intermediate to advanced
376 pages
15h 55m
English
Content preview from IPv6 Network Programming
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4
Tips in IPv6 Programming
4.1
4.2
Parsing a IPv6 Address out of String
While writing IPv6-capable applications, you will encounter situations where you
need to extract a numeric IPv6 address from a given string (such as a URL). Unlike an
IPv4 numeric address, an IPv6 numeric address is very difficult to express with regular
expression; it can have 0 to 32 hexadecimal digits (0-9 and a-f), as well as 2 to 7 colons
in between. In the case ofa scoped IPv6 address, it is suffixed by "%scopeid." For some
of the address forms defined in the IPv6 addressing architecture, we can use an IPv4
numeric address form in the ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.