How to use ipBlockFromTwoIPs method of types Package

Best K6 code snippet using types.ipBlockFromTwoIPs


Source:ipblock.go Github


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...61 }62 if (ip0.To4() == nil) != (ip1.To4() == nil) { // XOR63 return nil, errors.New("mixed IP range format: " + s)64 }65 block := ipBlockFromTwoIPs(ip0, ip1)66 if block.count.Sign() <= 0 {67 return nil, errors.New("negative IP range: " + s)68 }69 return block, nil70}71func ipBlockFromTwoIPs(ip0, ip1 net.IP) *ipBlock {72 // This code doesn't do any checks on the validity of the arguments, that should be73 // done before and/or after it is called74 var block ipBlock75 block.firstIP = new(big.Int)76 block.count = new(big.Int)77 block.ipv6 = ip0.To4() == nil78 if block.ipv6 {79 block.firstIP.SetBytes(ip0.To16())80 block.count.SetBytes(ip1.To16())81 } else {82 block.firstIP.SetBytes(ip0.To4())83 block.count.SetBytes(ip1.To4())84 }85 block.count.Sub(block.count, block.firstIP)86 block.count.Add(block.count, big.NewInt(1))87 return &block88}89func ipBlockFromCIDR(s string) (*ipBlock, error) {90 _, pnet, err := net.ParseCIDR(s)91 if err != nil {92 return nil, fmt.Errorf("parseCIDR() failed parsing %s: %w", s, err)93 }94 ip0 := pnet.IP95 // TODO: this is just to copy it, it will probably be better to copy the bytes ...96 ip1 := net.ParseIP(ip0.String())97 if ip1.To4() == nil {98 ip1 = ip1.To16()99 } else {100 ip1 = ip1.To4()101 }102 for i := range ip1 {103 ip1[i] |= (255 ^ pnet.Mask[i])104 }105 block := ipBlockFromTwoIPs(ip0, ip1)106 // in the case of ipv4 if the network is bigger than 31 the first and last IP are reserved so we107 // need to reduce the addresses by 2 and increment the first ip108 if !block.ipv6 && big.NewInt(2).Cmp(block.count) < 0 {109 block.count.Sub(block.count, big.NewInt(2))110 block.firstIP.Add(block.firstIP, big.NewInt(1))111 }112 return block, nil113}114func (b ipPoolBlock) getIP(index *big.Int) net.IP {115 // TODO implement walking ipv6 networks first116 // that will probably require more math ... including knowing which is the next network and ...117 // thinking about it - it looks like it's going to be kind of hard or badly defined118 i := new(big.Int)119 i.Add(b.firstIP, index)...

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Using AI Code Generation


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1import (2type IPBlock struct {3}4func NewIPBlockFromIPNet(ipNet *net.IPNet) *IPBlock {5 return &IPBlock{6 start: ipNet.IP.Mask(ipNet.Mask),7 end: LastIP(ipNet),8 }9}10func NewIPBlockFromIPs(start, end net.IP) *IPBlock {11 return &IPBlock{12 }13}14func (ipb *IPBlock) Contains(ip net.IP) bool {15 return bytes.Compare(ipb.start, ip) <= 0 && bytes.Compare(ipb.end, ip) >= 016}17func LastIP(ipNet *net.IPNet) net.IP {18 ip := ipNet.IP.To4()19 if ip == nil {20 }21 for i := len(ip) - 1; i >= 0; i-- {22 if ip[i] != 0 {23 }24 }25}26func main() {27}28import (

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