srvdns

Documentation

Overview

Package srvdns handles all the DNS stuff.

Index

• func Serve(addr string, fwd string, cache int64, http string, v int) (*dns.Server, *dns.Server)
• type CacheEntry
• type CacheList
  • func (l *CacheList) Delete(keys ...string)
  • func (l *CacheList) Dump(w io.Writer)
  • func (l *CacheList) Get(k string) (CacheEntry, bool)
  • func (l *CacheList) Len() int
  • func (l *CacheList) Purge()
  • func (l *CacheList) PurgeExpired(max int)
  • func (l *CacheList) Store(k string, entry CacheEntry)

Functions

func Serve

func Serve(addr string, fwd string, cache int64, http string, v int) (*dns.Server, *dns.Server)

Serve DNS requests.

TODO: Splitting out the binding of the socket and starting a server is not easy with the dns API, so we don't for now.

Types

type CacheEntry

type CacheEntry struct {
	// contains filtered or unexported fields
}

CacheEntry is a single cached entry

type CacheList

type CacheList struct {
	sync.RWMutex
	// contains filtered or unexported fields
}

CacheList is the list of all caches entries.

var Cache CacheList

Cache of spoofing actions.

We don't cache the actual DNS responses − that's the resolver's job. We just cache the action taken. That's enough and saves some time in processing regexps and such

func (*CacheList) Delete

func (l *CacheList) Delete(keys ...string)

Delete items.

func (*CacheList) Dump

func (l *CacheList) Dump(w io.Writer)

Dump all keys to the writer.

func (*CacheList) Get

func (l *CacheList) Get(k string) (CacheEntry, bool)

Get a single item.

func (*CacheList) Len

func (l *CacheList) Len() int

Len returns the length of the map.

func (*CacheList) Purge

func (l *CacheList) Purge()

Purge the entire cache

func (*CacheList) PurgeExpired

func (l *CacheList) PurgeExpired(max int)

PurgeExpired removes old cache items.

func (*CacheList) Store

func (l *CacheList) Store(k string, entry CacheEntry)

Store an item.