brotherpowers/ipsubnet

Network calculator for subnet mask and other classless (CIDR) network information. ( GO )

ipsubnet's Issues

Is there an easy way to determine the first address after the range?

Incorrect output for /32

/32 networks (single host) get weird output from some of the calls. Admittedly some of the function calls don't necessarily make sense for /32, but the output doesn't seem to be what one would expect:

sub := ipsubnet.SubnetCalculator("8.8.8.8", "32")
sub.GetNumberIPAddresses() // 0
sub.GetNumberAddressableHosts() // 1
sub.GetIPAddressRange()[0] // 8.8.8.8
sub.GetIPAddressRange()[1] // 263.263.263.263
sub.GetBroadcastAddress() // 263.263.263.263

• GetNumberIPAddresses: I would think this would return 1 since /32 generally means just a single IP address, though I can see how 0 might result from masking operations.
• GetNumberAddressableHosts: I'm not sure if this should return 1 or 0, but 1 is probably preferred and is what is currently returned
• GetIPAddressRange()[1]: This should just return the single IP address. The return value isn't valid
• GetBroadcastAddress(): I would think this would just return the single IP address as well. The return value isn't valid.

Does not compile for 32 bit architecture

I encountered an issue when compiling a project with this library with the GOARCH=386.

vendor/github.com/brotherpowers/ipsubnet/ip.go:16:27: constant 4294967295 overflows int

This is the line in question:

ipsubnet/ip.go

Line 16 in 30bc98f

subnet_mask: 0xFFFFFFFF << uint(32-networkSize),