netutil

package module

v0.1.4 Latest Latest Go to latest Published: Mar 7, 2023 License: MIT Imports: 8 Imported by: 2

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Valid go.mod file
Redistributable license
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Repository

github.com/hnakamur/netutil

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README ¶

netutil

netutil provides some Go network utility functions.

Documentation ¶

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Overview ¶

Package netutil provides some network utility functions. Some of them are supported only on Linux.

Index ¶

func AddAddr(intf *net.Interface, ip net.IP, ipNet *net.IPNet, label string) error
func DelAddr(intf *net.Interface, ip net.IP, ipNet *net.IPNet) error
func HasAddr(intf *net.Interface, ip net.IP) (bool, error)
func IPNetEqual(ipNet1, ipNet2 *net.IPNet) bool
func IPNetTo4IfV4(ipNet *net.IPNet) *net.IPNet
func IPTo4IfV4(ip net.IP) net.IP
func InterfaceByIP(ip net.IP) (*net.Interface, error)
func IsUniqueLocal(ip net.IP) bool
func ParseIP(s string) net.IP
func SendGARP(intf *net.Interface, ip net.IP) error
func SplitHostPort(hostPort string) (host string, port int, err error)
type IP
- func (i IP) MarshalYAML() (interface{}, error)
- func (i *IP) UnmarshalYAML(unmarshal func(interface{}) error) error
type IPAndNet
- func ParseCIDR(s string) (*IPAndNet, error)

Constants ¶

This section is empty.

Variables ¶

This section is empty.

Functions ¶

func AddAddr ¶

func AddAddr(intf *net.Interface, ip net.IP, ipNet *net.IPNet, label string) error

AddAddr adds the specified IP address to the interface.

func DelAddr ¶

func DelAddr(intf *net.Interface, ip net.IP, ipNet *net.IPNet) error

DelAddr deletes the specified IP address from the interface.

func HasAddr ¶

func HasAddr(intf *net.Interface, ip net.IP) (bool, error)

HasAddr returns whether or not the interface has the specified IP address.

func IPNetEqual ¶

func IPNetEqual(ipNet1, ipNet2 *net.IPNet) bool

IPNetEqual resports whether ipNet1 and ipNet2 are the same IP network.

func IPNetTo4IfV4 ¶

func IPNetTo4IfV4(ipNet *net.IPNet) *net.IPNet

IPNetTo4IfV4 returns the IP network with IP replaced with IPto4If4().

func IPTo4IfV4 ¶

func IPTo4IfV4(ip net.IP) net.IP

IPTo4IfV4 returns the ip.To4() if ip is a v4 address, returns ip otherwise.

func InterfaceByIP ¶

func InterfaceByIP(ip net.IP) (*net.Interface, error)

InterfaceByIP return the interface matched by the IP address.

func IsUniqueLocal ¶

func IsUniqueLocal(ip net.IP) bool

IsUniqueLocal reports whether ip is a unique local address.

The identification of unique local addresses uses address type identification as defined in "Local IPv6 Unicast Addresses" section of RFC 4193 and "Private Address Space" in RFC 1918.

func ParseIP ¶

func ParseIP(s string) net.IP

ParseIP parses s as an IP address using net.ParseIP(), and converts the IP with IPTo4Ifv4().

func SendGARP ¶

func SendGARP(intf *net.Interface, ip net.IP) error

SendGARP sends a GARP (Gratuitous ARP) packet.

func SplitHostPort ¶

func SplitHostPort(hostPort string) (host string, port int, err error)

SplitHostPort split host and port and validate port to be an integer between 0 and 65535.

Types ¶

type IP ¶

type IP net.IP

IP is an IP address which can be marshaled and marshaled to YAML.

func (IP) MarshalYAML ¶

func (i IP) MarshalYAML() (interface{}, error)

MarshalYAML marshal an IP address to string.

func (*IP) UnmarshalYAML ¶

func (i *IP) UnmarshalYAML(unmarshal func(interface{}) error) error

UnmarshalYAML unmarshal an IP address string from YAML.

type IPAndNet ¶

type IPAndNet struct {
	IP    net.IP
	IPNet *net.IPNet
}

IPAndNet is an IP address with IPNet which can be marshaled and marshaled to YAML.

func ParseCIDR ¶

func ParseCIDR(s string) (*IPAndNet, error)

ParseCIDR parses s as a CIDR using net.ParseCIDR(), and converts the IP with IPTo4Ifv4().

func (*IPAndNet) Equal ¶

func (i *IPAndNet) Equal(j *IPAndNet) bool

Equal reports whether i and j are the same IP address and network. IP addresses are compared with IP.Equal and networks are compared with the results of IPNet.String().

func (IPAndNet) MarshalYAML ¶

func (i IPAndNet) MarshalYAML() (interface{}, error)

MarshalYAML marshal an IP address and network to string.

func (*IPAndNet) UnmarshalYAML ¶

func (i *IPAndNet) UnmarshalYAML(unmarshal func(interface{}) error) error

UnmarshalYAML unmarshal an CIDR address string from YAML.

Source Files ¶

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