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dns: change cache to lrucache

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This commit is contained in:
nadoo 2020-10-08 18:48:23 +08:00
parent 8495f16a76
commit 6d64ee4c0e
11 changed files with 146 additions and 90 deletions
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8
README.md
View File

@ -88,7 +88,7 @@ glider -h
<summary>click to see details</summary> <summary>click to see details</summary>
```bash ```bash
./glider 0.11.1 usage: ./glider 0.11.2 usage:
-checkdisabledonly -checkdisabledonly
check disabled fowarders only check disabled fowarders only
-checkinterval int -checkinterval int
@ -105,6 +105,8 @@ glider -h
local dns server listen address local dns server listen address
-dnsalwaystcp -dnsalwaystcp
always use tcp to query upstream dns servers no matter there is a forwarder or not always use tcp to query upstream dns servers no matter there is a forwarder or not
-dnscachesize int
size of CACHE (default 1024)
-dnsmaxttl int -dnsmaxttl int
maximum TTL value for entries in the CACHE(seconds) (default 1800) maximum TTL value for entries in the CACHE(seconds) (default 1800)
-dnsminttl int -dnsminttl int
@ -170,13 +172,13 @@ VLESS scheme:
vless://uuid@host:port[?fallback=127.0.0.1:80] vless://uuid@host:port[?fallback=127.0.0.1:80]
Trojan scheme: Trojan scheme:
trojan://pass@host:port[?skipVerify=true] trojan://pass@host:port[?serverName=SERVERNAME][&skipVerify=true]
Available securities for vmess: Available securities for vmess:
none, aes-128-gcm, chacha20-poly1305 none, aes-128-gcm, chacha20-poly1305
TLS client scheme: TLS client scheme:
tls://host:port[?skipVerify=true][&serverName=SERVERNAME] tls://host:port[?serverName=SERVERNAME][&skipVerify=true]
Proxy over tls client: Proxy over tls client:
tls://host:port[?skipVerify=true][&serverName=SERVERNAME],scheme:// tls://host:port[?skipVerify=true][&serverName=SERVERNAME],scheme://

7
config.go
View File

@ -56,14 +56,17 @@ func parseConfig() *Config {
flag.StringSliceUniqVar(&conf.RuleFiles, "rulefile", nil, "rule file path") flag.StringSliceUniqVar(&conf.RuleFiles, "rulefile", nil, "rule file path")
flag.StringVar(&conf.RulesDir, "rules-dir", "", "rule file folder") flag.StringVar(&conf.RulesDir, "rules-dir", "", "rule file folder")
// dns configs
flag.StringVar(&conf.DNS, "dns", "", "local dns server listen address") flag.StringVar(&conf.DNS, "dns", "", "local dns server listen address")
flag.StringSliceUniqVar(&conf.DNSConfig.Servers, "dnsserver", []string{"8.8.8.8:53"}, "remote dns server address") flag.StringSliceUniqVar(&conf.DNSConfig.Servers, "dnsserver", []string{"8.8.8.8:53"}, "remote dns server address")
flag.BoolVar(&conf.DNSConfig.AlwaysTCP, "dnsalwaystcp", false, "always use tcp to query upstream dns servers no matter there is a forwarder or not") flag.BoolVar(&conf.DNSConfig.AlwaysTCP, "dnsalwaystcp", false, "always use tcp to query upstream dns servers no matter there is a forwarder or not")
flag.IntVar(&conf.DNSConfig.Timeout, "dnstimeout", 3, "timeout value used in multiple dnsservers switch(seconds)") flag.IntVar(&conf.DNSConfig.Timeout, "dnstimeout", 3, "timeout value used in multiple dnsservers switch(seconds)")
flag.IntVar(&conf.DNSConfig.MaxTTL, "dnsmaxttl", 1800, "maximum TTL value for entries in the CACHE(seconds)") flag.IntVar(&conf.DNSConfig.MaxTTL, "dnsmaxttl", 1800, "maximum TTL value for entries in the CACHE(seconds)")
flag.IntVar(&conf.DNSConfig.MinTTL, "dnsminttl", 0, "minimum TTL value for entries in the CACHE(seconds)") flag.IntVar(&conf.DNSConfig.MinTTL, "dnsminttl", 0, "minimum TTL value for entries in the CACHE(seconds)")
flag.IntVar(&conf.DNSConfig.CacheSize, "dnscachesize", 1024, "size of CACHE")
flag.StringSliceUniqVar(&conf.DNSConfig.Records, "dnsrecord", nil, "custom dns record, format: domain/ip") flag.StringSliceUniqVar(&conf.DNSConfig.Records, "dnsrecord", nil, "custom dns record, format: domain/ip")
// service configs
flag.StringSliceUniqVar(&conf.Services, "service", nil, "run specified services, format: SERVICE_NAME[,SERVICE_CONFIG]") flag.StringSliceUniqVar(&conf.Services, "service", nil, "run specified services, format: SERVICE_NAME[,SERVICE_CONFIG]")
flag.Usage = usage flag.Usage = usage
@ -166,7 +169,7 @@ func usage() {
fmt.Fprintf(w, "\n") fmt.Fprintf(w, "\n")
fmt.Fprintf(w, "Trojan scheme:\n") fmt.Fprintf(w, "Trojan scheme:\n")
fmt.Fprintf(w, " trojan://pass@host:port[?skipVerify=true]\n") fmt.Fprintf(w, " trojan://pass@host:port[?serverName=SERVERNAME][&skipVerify=true]\n")
fmt.Fprintf(w, "\n") fmt.Fprintf(w, "\n")
fmt.Fprintf(w, "Available securities for vmess:\n") fmt.Fprintf(w, "Available securities for vmess:\n")
@ -174,7 +177,7 @@ func usage() {
fmt.Fprintf(w, "\n") fmt.Fprintf(w, "\n")
fmt.Fprintf(w, "TLS client scheme:\n") fmt.Fprintf(w, "TLS client scheme:\n")
fmt.Fprintf(w, " tls://host:port[?skipVerify=true][&serverName=SERVERNAME]\n") fmt.Fprintf(w, " tls://host:port[?serverName=SERVERNAME][&skipVerify=true]\n")
fmt.Fprintf(w, "\n") fmt.Fprintf(w, "\n")
fmt.Fprintf(w, "Proxy over tls client:\n") fmt.Fprintf(w, "Proxy over tls client:\n")

2
config/glider.conf.example
View File

@ -108,7 +108,7 @@ listen=socks5://:1080
# forward=http://1.1.1.1:8080 # forward=http://1.1.1.1:8080
# trojan as forwarder # trojan as forwarder
# forward=trojan://PASSWORD@1.1.1.1:8080[?skipVerify=true] # forward=trojan://PASSWORD@1.1.1.1:8080[?serverName=SERVERNAME][&skipVerify=true]
# vless forwarder # vless forwarder
# forward=vless://5a146038-0b56-4e95-b1dc-5c6f5a32cd98@1.1.1.1:443 # forward=vless://5a146038-0b56-4e95-b1dc-5c6f5a32cd98@1.1.1.1:443

159
dns/cache.go
View File

@ -3,87 +3,124 @@ package dns
import ( import (
"sync" "sync"
"time" "time"
"github.com/nadoo/glider/pool"
) )
// LongTTL is 50 years duration in seconds, used for none-expired items. // LruCache is the struct of LruCache.
const LongTTL = 50 * 365 * 24 * 3600 type LruCache struct {
mu sync.Mutex
type item struct { size int
value []byte head *Item
expire time.Time tail *Item
cache map[string]*Item
store map[string][]byte
} }
// Cache is the struct of cache. // Item is the struct of cache item.
type Cache struct { type Item struct {
store map[string]*item key string
mutex sync.RWMutex val []byte
storeCopy bool exp int64
prev *Item
next *Item
} }
// NewCache returns a new cache. // NewCache returns a new LruCache.
func NewCache(storeCopy bool) (c *Cache) { func NewLruCache(size int) *LruCache {
c = &Cache{store: make(map[string]*item), storeCopy: storeCopy} // init 2 items here, it doesn't matter cuz they will be deleted when the cache if full
go func() { head, tail := &Item{key: "head"}, &Item{key: "tail"}
for now := range time.Tick(time.Second) { head.next, tail.prev = tail, head
c.mutex.Lock() c := &LruCache{
for k, v := range c.store { size: size,
if now.After(v.expire) { head: head,
delete(c.store, k) tail: tail,
if storeCopy { cache: make(map[string]*Item, size),
pool.PutBuffer(v.value) store: make(map[string][]byte),
} }
c.cache[head.key], c.cache[tail.key] = head, tail
return c
}
// Get gets an item from cache.
func (c *LruCache) Get(k string) (v []byte, expired bool) {
c.mu.Lock()
defer c.mu.Unlock()
if v, ok := c.store[k]; ok {
return v, false
} }
if it, ok := c.cache[k]; ok {
v = it.val
if it.exp < time.Now().Unix() {
expired = true
} }
c.mutex.Unlock() c.moveToHead(it)
} }
}()
return return
} }
// Len returns the length of cache. // Set sets an item with key, value, and ttl(seconds).
func (c *Cache) Len() int { // if the ttl is zero, this item will be set and never be deleted.
return len(c.store) // if the key exists, update it with value and exp and move it to head.
// if the key does not exist, put an item to the cache's head.
// finally, remove the tail if the cache is full.
func (c *LruCache) Set(k string, v []byte, ttl int) {
c.mu.Lock()
defer c.mu.Unlock()
if ttl == 0 {
c.store[k] = v
return
}
exp := time.Now().Add(time.Second * time.Duration(ttl)).Unix()
if it, ok := c.cache[k]; ok {
it.val = v
it.exp = exp
c.moveToHead(it)
return
}
c.putToHead(k, v, exp)
if len(c.cache) > c.size {
c.removeTail()
}
} }
// Put an item into cache, invalid after ttl seconds. // putToHead puts a new item to cache's head.
func (c *Cache) Put(k string, v []byte, ttl int) { func (c *LruCache) putToHead(k string, v []byte, exp int64) {
if len(v) != 0 { it := &Item{key: k, val: v, exp: exp, prev: nil, next: c.head}
c.mutex.Lock() c.cache[k] = it
it, ok := c.store[k]
if !ok { it.prev = nil
if c.storeCopy { it.next = c.head
it = &item{value: valCopy(v)} c.head.prev = it
c.head = it
}
// moveToHead moves an existing item to cache's head.
func (c *LruCache) moveToHead(it *Item) {
if it != c.head {
if c.tail == it {
c.tail = it.prev
c.tail.next = nil
} else { } else {
it = &item{value: v} it.prev.next = it.next
it.next.prev = it.prev
} }
c.store[k] = it it.prev = nil
} it.next = c.head
it.expire = time.Now().Add(time.Duration(ttl) * time.Second) c.head.prev = it
c.mutex.Unlock() c.head = it
} }
} }
// Get gets an item from cache(do not modify it). // removeTail removes the tail from cache.
func (c *Cache) Get(k string) (v []byte) { func (c *LruCache) removeTail() {
c.mutex.RLock() delete(c.cache, c.tail.key)
if it, ok := c.store[k]; ok {
v = it.value
}
c.mutex.RUnlock()
return
}
// GetCopy gets an item from cache and returns it's copy(so you can modify it). if c.tail.prev != nil {
func (c *Cache) GetCopy(k string) []byte { c.tail.prev.next = nil
return valCopy(c.Get(k))
}
func valCopy(v []byte) (b []byte) {
if v != nil {
b = pool.GetBuffer(len(v))
copy(b, v)
} }
return c.tail = c.tail.prev
} }

20
dns/client.go
View File

@ -24,12 +24,13 @@ type Config struct {
MinTTL int MinTTL int
Records []string Records []string
AlwaysTCP bool AlwaysTCP bool
CacheSize int
} }
// Client is a dns client struct. // Client is a dns client struct.
type Client struct { type Client struct {
proxy proxy.Proxy proxy proxy.Proxy
cache *Cache cache *LruCache
config *Config config *Config
upStream *UPStream upStream *UPStream
upStreamMap map[string]*UPStream upStreamMap map[string]*UPStream
@ -40,7 +41,7 @@ type Client struct {
func NewClient(proxy proxy.Proxy, config *Config) (*Client, error) { func NewClient(proxy proxy.Proxy, config *Config) (*Client, error) {
c := &Client{ c := &Client{
proxy: proxy, proxy: proxy,
cache: NewCache(true), cache: NewLruCache(config.CacheSize),
config: config, config: config,
upStream: NewUPStream(config.Servers), upStream: NewUPStream(config.Servers),
upStreamMap: make(map[string]*UPStream), upStreamMap: make(map[string]*UPStream),
@ -63,8 +64,9 @@ func (c *Client) Exchange(reqBytes []byte, clientAddr string, preferTCP bool) ([
} }
if req.Question.QTYPE == QTypeA || req.Question.QTYPE == QTypeAAAA { if req.Question.QTYPE == QTypeA || req.Question.QTYPE == QTypeAAAA {
v := c.cache.GetCopy(qKey(req.Question)) v, _ := c.cache.Get(qKey(req.Question))
if len(v) > 4 { if len(v) > 4 {
v = valCopy(v)
binary.BigEndian.PutUint16(v[2:4], req.ID) binary.BigEndian.PutUint16(v[2:4], req.ID)
log.F("[dns] %s <-> cache, type: %d, %s", log.F("[dns] %s <-> cache, type: %d, %s",
clientAddr, req.Question.QTYPE, req.Question.QNAME) clientAddr, req.Question.QTYPE, req.Question.QNAME)
@ -93,7 +95,7 @@ func (c *Client) Exchange(reqBytes []byte, clientAddr string, preferTCP bool) ([
// add to cache only when there's a valid ip address // add to cache only when there's a valid ip address
if len(ips) != 0 && ttl > 0 { if len(ips) != 0 && ttl > 0 {
c.cache.Put(qKey(resp.Question), respBytes, ttl) c.cache.Set(qKey(resp.Question), valCopy(respBytes), ttl)
} }
log.F("[dns] %s <-> %s(%s) via %s, type: %d, %s: %s", log.F("[dns] %s <-> %s(%s) via %s, type: %d, %s: %s",
@ -274,7 +276,7 @@ func (c *Client) AddRecord(record string) error {
} }
binary.BigEndian.PutUint16(wb.Bytes()[:2], uint16(n)) binary.BigEndian.PutUint16(wb.Bytes()[:2], uint16(n))
c.cache.Put(qKey(m.Question), wb.Bytes(), LongTTL) c.cache.Set(qKey(m.Question), wb.Bytes(), 0)
return nil return nil
} }
@ -315,3 +317,11 @@ func qKey(q *Question) string {
} }
return q.QNAME return q.QNAME
} }
func valCopy(v []byte) (b []byte) {
if v != nil {
b = pool.GetBuffer(len(v))
copy(b, v)
}
return
}

4
go.mod
View File

@ -12,8 +12,8 @@ require (
github.com/xtaci/kcp-go/v5 v5.5.17 github.com/xtaci/kcp-go/v5 v5.5.17
golang.org/x/crypto v0.0.0-20201002170205-7f63de1d35b0 golang.org/x/crypto v0.0.0-20201002170205-7f63de1d35b0
golang.org/x/net v0.0.0-20201006153459-a7d1128ccaa0 // indirect golang.org/x/net v0.0.0-20201006153459-a7d1128ccaa0 // indirect
golang.org/x/sys v0.0.0-20201007082116-8445cc04cbdf // indirect golang.org/x/sys v0.0.0-20201008064518-c1f3e3309c71 // indirect
golang.org/x/tools v0.0.0-20201007032633-0806396f153e // indirect golang.org/x/tools v0.0.0-20201008025239-9df69603baec // indirect
gopkg.in/check.v1 v1.0.0-20200902074654-038fdea0a05b // indirect gopkg.in/check.v1 v1.0.0-20200902074654-038fdea0a05b // indirect
) )

8
go.sum
View File

@ -167,8 +167,8 @@ golang.org/x/sys v0.0.0-20200808120158-1030fc2bf1d9/go.mod h1:h1NjWce9XRLGQEsW7w
golang.org/x/sys v0.0.0-20200916030750-2334cc1a136f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= golang.org/x/sys v0.0.0-20200916030750-2334cc1a136f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f h1:+Nyd8tzPX9R7BWHguqsrbFdRx3WQ/1ib8I44HXV5yTA= golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f h1:+Nyd8tzPX9R7BWHguqsrbFdRx3WQ/1ib8I44HXV5yTA=
golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20201007082116-8445cc04cbdf h1:AvBTl0xbF/KtHyvm61X4gSPF7/dKJ/xQqJwKr1Qu9no= golang.org/x/sys v0.0.0-20201008064518-c1f3e3309c71 h1:ZPX6UakxrJCxWiyGWpXtFY+fp86Esy7xJT/jJCG8bgU=
golang.org/x/sys v0.0.0-20201007082116-8445cc04cbdf/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= golang.org/x/sys v0.0.0-20201008064518-c1f3e3309c71/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ= golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ= golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ= golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
@ -177,8 +177,8 @@ golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtn
golang.org/x/tools v0.0.0-20200425043458-8463f397d07c h1:iHhCR0b26amDCiiO+kBguKZom9aMF+NrFxh9zeKR/XU= golang.org/x/tools v0.0.0-20200425043458-8463f397d07c h1:iHhCR0b26amDCiiO+kBguKZom9aMF+NrFxh9zeKR/XU=
golang.org/x/tools v0.0.0-20200425043458-8463f397d07c/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE= golang.org/x/tools v0.0.0-20200425043458-8463f397d07c/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE=
golang.org/x/tools v0.0.0-20200808161706-5bf02b21f123/go.mod h1:njjCfa9FT2d7l9Bc6FUM5FLjQPp3cFF28FI3qnDFljA= golang.org/x/tools v0.0.0-20200808161706-5bf02b21f123/go.mod h1:njjCfa9FT2d7l9Bc6FUM5FLjQPp3cFF28FI3qnDFljA=
golang.org/x/tools v0.0.0-20201007032633-0806396f153e h1:FJA2W4BQfMGZ+CD/tiAc39HXecuRsJl3EuczaSUu/Yk= golang.org/x/tools v0.0.0-20201008025239-9df69603baec h1:RY2OghEV/7X1MLaecgm1mwFd3sGvUddm5pGVSxQvX0c=
golang.org/x/tools v0.0.0-20201007032633-0806396f153e/go.mod h1:z6u4i615ZeAfBE4XtMziQW1fSVJXACjjbWkB/mvPzlU= golang.org/x/tools v0.0.0-20201008025239-9df69603baec/go.mod h1:z6u4i615ZeAfBE4XtMziQW1fSVJXACjjbWkB/mvPzlU=
golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0= golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0= golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4= golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=

3
proxy/socks5/packet.go
View File

@ -28,7 +28,8 @@ func NewPktConn(c net.PacketConn, writeAddr net.Addr, tgtAddr socks.Addr, tgtHea
writeAddr: writeAddr, writeAddr: writeAddr,
tgtAddr: tgtAddr, tgtAddr: tgtAddr,
tgtHeader: tgtHeader, tgtHeader: tgtHeader,
ctrlConn: ctrlConn} ctrlConn: ctrlConn,
}
if ctrlConn != nil { if ctrlConn != nil {
go func() { go func() {

7
proxy/tls/tls.go
View File

@ -54,11 +54,12 @@ func NewTLS(s string, d proxy.Dialer, p proxy.Proxy) (*TLS, error) {
} }
if t.serverName == "" { if t.serverName == "" {
host, port, _ := net.SplitHostPort(t.addr) idx := strings.LastIndex(t.addr, ":")
if port == "" { if idx == -1 {
idx = len(t.addr)
t.addr = net.JoinHostPort(t.addr, "443") t.addr = net.JoinHostPort(t.addr, "443")
} }
t.serverName = host t.serverName = t.addr[:idx]
} }
return t, nil return t, nil

8
proxy/trojan/trojan.go
View File

@ -9,6 +9,7 @@ import (
"encoding/hex" "encoding/hex"
"net" "net"
"net/url" "net/url"
"strings"
"github.com/nadoo/glider/log" "github.com/nadoo/glider/log"
"github.com/nadoo/glider/pool" "github.com/nadoo/glider/pool"
@ -50,11 +51,12 @@ func NewTrojan(s string, d proxy.Dialer, p proxy.Proxy) (*Trojan, error) {
} }
if t.serverName == "" { if t.serverName == "" {
host, port, _ := net.SplitHostPort(t.addr) idx := strings.LastIndex(t.addr, ":")
if port == "" { if idx == -1 {
idx = len(t.addr)
t.addr = net.JoinHostPort(t.addr, "443") t.addr = net.JoinHostPort(t.addr, "443")
} }
t.serverName = host t.serverName = t.addr[:idx]
} }
// pass // pass

2
rule/group.go
View File

@ -236,7 +236,7 @@ func checkWebSite(fwdr *Forwarder, website string, timeout time.Duration, buf []
rc.SetDeadline(time.Now().Add(timeout)) rc.SetDeadline(time.Now().Add(timeout))
} }
_, err = io.WriteString(rc, "GET / HTTP/1.0\r\n\r\n") _, err = io.WriteString(rc, "GET / HTTP/1.1\r\n\r\n")
if err != nil { if err != nil {
log.F("[check] %s(%d) -> %s, FAILED. error in write: %s", fwdr.Addr(), fwdr.Priority(), website, err) log.F("[check] %s(%d) -> %s, FAILED. error in write: %s", fwdr.Addr(), fwdr.Priority(), website, err)
fwdr.Disable() fwdr.Disable()