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[client] Use platform-native routing APIs for freeBSD, macOS and Windows

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This commit is contained in:
Viktor Liu
2025-06-04 16:28:58 +02:00
committed by GitHub
parent 87148c503f
commit ea4d13e96d
53 changed files with 1552 additions and 1046 deletions
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19
util/net/net.go
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@ -1,8 +1,10 @@
package net
import (
"fmt"
"math/big"
"net"
"net/netip"
"github.com/google/uuid"
)
@ -54,11 +56,13 @@ func GenerateConnID() ConnectionID {
return ConnectionID(uuid.NewString())
}
func GetLastIPFromNetwork(network *net.IPNet, fromEnd int) net.IP {
// Calculate the last IP in the CIDR range
func GetLastIPFromNetwork(network netip.Prefix, fromEnd int) (netip.Addr, error) {
var endIP net.IP
for i := 0; i < len(network.IP); i++ {
endIP = append(endIP, network.IP[i]|^network.Mask[i])
addr := network.Addr().AsSlice()
mask := net.CIDRMask(network.Bits(), len(addr)*8)
for i := 0; i < len(addr); i++ {
endIP = append(endIP, addr[i]|^mask[i])
}
// convert to big.Int
@ -70,5 +74,10 @@ func GetLastIPFromNetwork(network *net.IPNet, fromEnd int) net.IP {
resultInt := big.NewInt(0)
resultInt.Sub(endInt, fromEndBig)
return resultInt.Bytes()
ip, ok := netip.AddrFromSlice(resultInt.Bytes())
if !ok {
return netip.Addr{}, fmt.Errorf("invalid IP address from network %s", network)
}
return ip.Unmap(), nil
}