IP utilities for go - including type for representing and comparing ip/range/CIDR/FQDN
Used for identifying whether an endpoint (represented as a string) is:
- IP address such as
192.111.65.3 - IP address range such as
192.168.0.0-192.200.255.255 - CIDR such as
192.168.55.33/8 - FQDN such as
somefqdn.com
type Ip struct {
Type IpId
Endpoint string
loUint uint64
hiUint uint64
}GetType(endpoint string) Ip returns an object of type Ip that designates which of the above types the input is. If none of the above, then the type is set to undefined.
(t *Ip) GetFirst() string returns the first endpoint in the range/CIDR. If t is an IP address, it returns the IP address.
(t *Ip) In(t1 Ip) bool returns true when the passed t1 Ip falls inside of t. If they are exactly equal, then it returns false. It works for any possible combination of IP, IP range, and CIDR. Note: Clearly the FQDN type doesn't seem to fit here, but I was going to tie this into an nslookup to resolve the FQDN. So, I'm only temporarily violating the single responsibility principle :)
(t *Ip) Equals(t1 Ip) bool returns true when t and t1 contain exactly the same range of IP addresses and works for any possible combination of IP, IP range, and CIDR.
The commands.go file has ping() and nslookup() functions that seem to work on both Mac and Linux. The ping is timed to 3 seconds and will take that long to complete every time.