netutil

Documentation

Overview

Package netutil implements network-related utility functions.

Index

• func DropPort(port int) error
• func GetDefaultHost() (string, error)
• func GetDefaultInterfaces() (map[string]uint8, error)
• func IsNetworkTimeoutError(err error) bool
• func RecoverPort(port int) error
• func RemoveLatency() error
• func SetLatency(ms, rv int) error
• func URLStringsEqual(ctx context.Context, lg *zap.Logger, a []string, b []string) (bool, error)

Functions

func DropPort

func DropPort(port int) error

DropPort drops all tcp packets that are received from the given port and sent to the given port.

func GetDefaultHost

func GetDefaultHost() (string, error)

GetDefaultHost obtains the first IP address of machine from the routing table and returns the IP address as string. An IPv4 address is preferred to an IPv6 address for backward compatibility.

func GetDefaultInterfaces

func GetDefaultInterfaces() (map[string]uint8, error)

GetDefaultInterfaces gets names of interfaces and returns a map[interface]families.

func IsNetworkTimeoutError

func IsNetworkTimeoutError(err error) bool

func RecoverPort

func RecoverPort(port int) error

RecoverPort stops dropping tcp packets at given port.

func RemoveLatency

func RemoveLatency() error

RemoveLatency resets latency configurations.

func SetLatency

func SetLatency(ms, rv int) error

SetLatency adds latency in millisecond scale with random variations.

func URLStringsEqual

func URLStringsEqual(ctx context.Context, lg *zap.Logger, a []string, b []string) (bool, error)

URLStringsEqual returns "true" if given URLs are valid and resolved to same IP addresses. Otherwise, return "false" and error, if any.