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clinuxstringipv6ipv4

How to Convert Between IP(v4/v6) Address (and Port) and String?

I'm trying to port some Windows code that uses RtlIpv4StringToAddressExA/RtlIpv6StringToAddressExA and RtlIpv6AddressToStringExA/RtlIpv4AddressToStringExA to Linux and can't seem to find quite equivalent APIs. There seem to be plenty of ways to convert just the IP address to string (and back), but I can't find something that supports the port as well.

For instance, to convert [2001:4898:d8:34:b912:426d:1c88:5859]:443 to an IP address from a string (and back).

To reiterate, I explicitly need an API that takes port into consideration.

Solution

  • There is no API to do this. You have to split off the port number yourself.

    Also see this answer, which mentions that most utilities use a -p port argument instead of :port to specify the port.

    If you really want something like this, it would probably be trivial to just write it yourself.