26 changed files with 953 additions and 1526 deletions
--- a/.gitignore
+++ b/.gitignore
@ -1,31 +1,3 @@
 # Compiled Object files, Static and Dynamic libs (Shared Objects)
 *.o
 *.a
 *.so
 # Folders
 _obj
 _test
 # Architecture specific extensions/prefixes
 *.[568vq]
 [568vq].out
 *.cgo1.go
 *.cgo2.c
 _cgo_defun.c
 _cgo_gotypes.go
 _cgo_export.*
 _testmain.go
 *.exe
 *.test
 *.prof
 *~
-*.swp
+dns*
 gdns*
 *.key
 *.crt
 client.yaml
 server.yaml
--- a/675
+++ b/675
@ -1,675 +0,0 @@
                    GNU GENERAL PUBLIC LICENSE
                       Version 3, 29 June 2007
 Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
 Everyone is permitted to copy and distribute verbatim copies
 of this license document, but changing it is not allowed.
                            Preamble
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                     END OF TERMS AND CONDITIONS
            How to Apply These Terms to Your New Programs
  If you develop a new program, and you want it to be of the greatest
 possible use to the public, the best way to achieve this is to make it
 free software which everyone can redistribute and change under these terms.
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 to attach them to the start of each source file to most effectively
 state the exclusion of warranty; and each file should have at least
 the "copyright" line and a pointer to where the full notice is found.
    {one line to give the program's name and a brief idea of what it does.}
    Copyright (C) {year}  {name of author}
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    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 Also add information on how to contact you by electronic and paper mail.
  If the program does terminal interaction, make it output a short
 notice like this when it starts in an interactive mode:
    {project}  Copyright (C) {year}  {fullname}
    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
    This is free software, and you are welcome to redistribute it
    under certain conditions; type `show c' for details.
 The hypothetical commands `show w' and `show c' should show the appropriate
 parts of the General Public License.  Of course, your program's commands
 might be different; for a GUI interface, you would use an "about box".
  You should also get your employer (if you work as a programmer) or school,
 if any, to sign a "copyright disclaimer" for the program, if necessary.
 For more information on this, and how to apply and follow the GNU GPL, see
 <http://www.gnu.org/licenses/>.
  The GNU General Public License does not permit incorporating your program
 into proprietary programs.  If your program is a subroutine library, you
 may consider it more useful to permit linking proprietary applications with
 the library.  If this is what you want to do, use the GNU Lesser General
 Public License instead of this License.  But first, please read
 <http://www.gnu.org/philosophy/why-not-lgpl.html>.
--- a/README.md
+++ b/README.md
@ -1,27 +1,21 @@
-# gdns
+gdns
-a dns proxy server write by go
+====
 gdns is a dns proxy server
 Features
 ========
-support tcp, udp, tls, DoH(dns over https/http2)
+features
 Usage
 =======
-```bash
+- support forward the query by rule,
-go get github.com/fangdingjun/gdns
+     different domains use different upstream server
-cp $GOPATH/src/github.com/fangdingjun/gdns/config_example.yaml config.yaml
+- support ip black list
-vim config.yaml
+- support google https dns
 $GOPATH/bin/gdns -c config.yaml -log_level DEBUG
 ```
 Third-part library
 ==================
 use 
 [dns](https://github.com/miekg/dns)
 library to parse the dns message
 usage
 =====
    go get github.com/fangdingjun/gdns
    cp $GOPATH/src/github.com/fangdingjun/gdns/config_example.yaml config.yaml
    vim config.yaml
    $GOPATH/bin/gdns -c config.yaml
--- a/cf_httpdns_test.go
+++ b/cf_httpdns_test.go
@ -0,0 +1,19 @@
 package main
 import (
 	"fmt"
 	"testing"
 	"github.com/miekg/dns"
 )
 func TestCFDns(t *testing.T) {
 	cf := &CloudflareHTTPDns{}
 	m := new(dns.Msg)
 	m.SetQuestion("www.google.com.", dns.TypeA)
 	m1, _, err := cf.Exchange(m, "1.1.1.1")
 	if err != nil {
 		t.Fatal(err)
 	}
 	fmt.Println(m1.String())
 }
--- a/client_https.go
+++ b/client_https.go
@ -1,59 +0,0 @@
 package main
 import (
 	"bytes"
 	"context"
 	"fmt"
 	"io"
 	"net/http"
 	"time"
 	"github.com/miekg/dns"
 )
 type httpclient struct {
 	Net        string
 	Timeout    time.Duration
 	HTTPClient *http.Client
 }
 func (c *httpclient) Exchange(msg *dns.Msg, upstream string) (*dns.Msg, int, error) {
 	data, err := msg.Pack()
 	if err != nil {
 		return nil, 0, err
 	}
 	req, err := http.NewRequest("POST", upstream, bytes.NewReader(data))
 	if err != nil {
 		return nil, 0, err
 	}
 	req.Header.Set("Content-Type", dnsMsgType)
 	ctx, cancel := context.WithTimeout(context.Background(), c.Timeout)
 	defer cancel()
 	req = req.WithContext(ctx)
 	resp, err := c.HTTPClient.Do(req)
 	if err != nil {
 		return nil, 0, err
 	}
 	defer resp.Body.Close()
 	if resp.StatusCode != http.StatusOK {
 		return nil, 0, fmt.Errorf("http error %d", resp.StatusCode)
 	}
 	data, err = io.ReadAll(resp.Body)
 	if err != nil {
 		return nil, 0, err
 	}
 	m := new(dns.Msg)
 	if err = m.Unpack(data); err != nil {
 		return nil, 0, err
 	}
 	return m, 0, nil
 }
--- a/cloudflare_httpdns.go
+++ b/cloudflare_httpdns.go
@ -0,0 +1,59 @@
 package main
 import (
 	"bytes"
 	"crypto/tls"
 	"fmt"
 	"io/ioutil"
 	"net/http"
 	"time"
 	"github.com/miekg/dns"
 )
 var httpclientCF = &http.Client{
 	Timeout: 8 * time.Second,
 	Transport: &http.Transport{
 		TLSClientConfig:     &tls.Config{ServerName: "cloudflare-dns.com"},
 		TLSHandshakeTimeout: 5 * time.Second,
 	},
 }
 // CloudflareHTTPDns cloudflare http dns
 type CloudflareHTTPDns struct {
 }
 // Exchange send request to server and get result
 func (cf *CloudflareHTTPDns) Exchange(m *dns.Msg, addr string) (m1 *dns.Msg, d time.Duration, err error) {
 	u := fmt.Sprintf("https://%s/dns-query", addr)
 	data, err := m.Pack()
 	if err != nil {
 		return
 	}
 	body := bytes.NewBuffer(data)
 	req, err := http.NewRequest("POST", u, body)
 	if err != nil {
 		return
 	}
 	req.Header.Set("Content-Type", "application/dns-udpwireformat")
 	resp, err := httpclientCF.Do(req)
 	if err != nil {
 		return
 	}
 	defer resp.Body.Close()
 	data, err = ioutil.ReadAll(resp.Body)
 	if err != nil {
 		return
 	}
 	m1 = new(dns.Msg)
 	if err = m1.Unpack(data); err != nil {
 		return
 	}
 	return
 }
--- a/conf.go
+++ b/conf.go
@ -0,0 +1,209 @@
 package main
 import (
 	"bufio"
 	"io/ioutil"
 	"os"
 	"strings"
 	"github.com/go-yaml/yaml"
 )
 type conf struct {
 	Listen          []addr
 	BlacklistFile   string
 	HostFile        string
 	ForwardRules    []rule
 	DefaultUpstream []addr
 	Timeout         int
 	Debug           bool
 	blacklist       item
 	hosts           hostitem
 }
 type rule struct {
 	Server     []addr
 	DomainFile string
 	domains    item
 }
 type addr struct {
 	Host    string
 	Port    int
 	Network string
 }
 func loadConfig(f string) (*conf, error) {
 	c := new(conf)
 	data, err := ioutil.ReadFile(f)
 	if err != nil {
 		return nil, err
 	}
 	if err := yaml.Unmarshal(data, c); err != nil {
 		return nil, err
 	}
 	if c.blacklist == nil {
 		c.blacklist = item{}
 	}
 	if c.Timeout == 0 {
 		c.Timeout = 2
 	}
 	if err := loadItemFile(c.blacklist, c.BlacklistFile); err != nil {
 		return nil, err
 	}
 	for i := range c.ForwardRules {
 		if c.ForwardRules[i].domains == nil {
 			c.ForwardRules[i].domains = item{}
 		}
 		if err := loadItemFile(c.ForwardRules[i].domains,
 			c.ForwardRules[i].DomainFile); err != nil {
 			return nil, err
 		}
 	}
 	if c.hosts == nil {
 		c.hosts = hostitem{}
 	}
 	if err := loadHostsFile(c.hosts, c.HostFile); err != nil {
 		return nil, err
 	}
 	return c, nil
 }
 func loadHostsFile(h hostitem, f string) error {
 	if f == "" {
 		return nil
 	}
 	fd, err := os.Open(f)
 	if err != nil {
 		return err
 	}
 	defer fd.Close()
 	r := bufio.NewReader(fd)
 	for {
 		s, err := r.ReadString('\n')
 		if err != nil {
 			break
 		}
 		s1 := strings.Trim(s, " \t\r\n")
 		// ignore blank line and comment
 		if s1 == "" || s1[0] == '#' {
 			continue
 		}
 		s1 = strings.Replace(s1, "\t", " ", -1)
 		s1 = strings.Trim(s1, " \t\r\n")
 		ss := strings.Split(s1, " ")
 		// ipv4
 		t := 1
 		if strings.Index(ss[0], ":") != -1 {
 			// ipv6
 			t = 28
 		}
 		for _, s2 := range ss[1:] {
 			if s2 == "" {
 				continue
 			}
 			h.add(s2, ss[0], t)
 		}
 	}
 	return nil
 }
 func loadItemFile(it item, f string) error {
 	if f == "" {
 		return nil
 	}
 	fd, err := os.Open(f)
 	if err != nil {
 		return err
 	}
 	defer fd.Close()
 	r := bufio.NewReader(fd)
 	for {
 		s, err := r.ReadString('\n')
 		if s != "" {
 			s1 := strings.Trim(s, " \r\n")
 			if s1 != "" && s1[0] != '#' {
 				it.add(s1)
 			}
 		}
 		if err != nil {
 			break
 		}
 	}
 	return nil
 }
 type item map[string]int
 func (it item) has(s string) bool {
 	ss := strings.Split(s, ".")
 	for i := 0; i < len(ss); i++ {
 		s1 := strings.Join(ss[i:], ".")
 		if _, ok := it[s1]; ok {
 			return true
 		}
 	}
 	return false
 }
 func (it item) exists(s string) bool {
 	_, ok := it[s]
 	return ok
 }
 func (it item) add(s string) {
 	it[s] = 1
 }
 type hostitem map[string][]hostentry
 func (ht hostitem) get(domain string, t int) string {
 	if v, ok := ht[domain]; ok {
 		for _, v1 := range v {
 			if v1.domain == domain && v1.t == t {
 				return v1.ip
 			}
 		}
 	}
 	return ""
 }
 func (ht hostitem) add(domain, ip string, t int) {
 	if v, ok := ht[domain]; ok {
 		exists := false
 		for _, v1 := range v {
 			if v1.domain == domain && v1.ip == ip && v1.t == t {
 				exists = true
 				break
 			}
 		}
 		if !exists {
 			ht[domain] = append(ht[domain], hostentry{domain, ip, t})
 		}
 	} else {
 		v1 := []hostentry{{domain, ip, t}}
 		ht[domain] = v1
 	}
 }
 type hostentry struct {
 	domain string
 	ip     string
 	t      int
 }
--- a/conf_test.go
+++ b/conf_test.go
@ -0,0 +1,121 @@
 package main
 import (
 	"fmt"
 	//"github.com/go-yaml/yaml"
 	//"io/ioutil"
 	"testing"
 )
 func TestConf(t *testing.T) {
 	c, err := loadConfig("testdata/config.yaml")
 	if err != nil {
 		t.Fatal(err)
 	}
 	//fmt.Printf("%#v\n", c)
 	if len(c.Listen) != 2 {
 		t.Errorf("expected listers 2, got %d", len(c.Listen))
 	}
 	if !c.blacklist.exists("1.2.3.4") {
 		fmt.Printf("%#v\n", c.blacklist)
 		t.Errorf("blacklist load failed")
 	}
 	if c.hosts.get("localhost", 1) != "127.0.0.1" {
 		fmt.Printf("%#v\n", c.hosts)
 		t.Errorf("hosts load failed")
 	}
 	if c.hosts.get("localhost", 28) != "::1" {
 		fmt.Printf("%#v\n", c.hosts)
 		t.Errorf("hosts load failed")
 	}
 	if len(c.ForwardRules) != 2 {
 		fmt.Printf("%#v\n", c.ForwardRules)
 		t.Errorf("expected rules 2, got %d", len(c.ForwardRules))
 	}
 	if !c.ForwardRules[0].domains.has("a.com") {
 		fmt.Printf("%#v\n", c.ForwardRules[0].domains)
 		t.Errorf("some domains should exit, may be load config failed")
 	}
 	if !c.ForwardRules[1].domains.has("d.com") {
 		fmt.Printf("%#v\n", c.ForwardRules[1].domains)
 		t.Errorf("some domains should exit, may be load config failed")
 	}
 }
 func TestItemExists(t *testing.T) {
 	it := item{
 		"google.cn":     1,
 		"www.baidu.com": 1,
 		"org":           1,
 	}
 	testdata := []struct {
 		d string
 		b bool
 	}{
 		{"google.cn", true},
 		{"www.google.cn", false},
 		{"www.a.org", false},
 	}
 	for _, d := range testdata {
 		b1 := it.exists(d.d)
 		if b1 != d.b {
 			t.Errorf("%s, expected %v, got %v", d.d, d.b, b1)
 		}
 	}
 }
 func TestItemHas(t *testing.T) {
 	it := item{
 		"google.cn":     1,
 		"www.baidu.com": 1,
 		"org":           1,
 	}
 	testdata := []struct {
 		d string
 		b bool
 	}{
 		{"google.cn", true},
 		{"www.google.cn", true},
 		{"www.a.org", true},
 		{"pan.baidu.com", false},
 		{"abc.org", true},
 	}
 	for _, d := range testdata {
 		b1 := it.has(d.d)
 		if b1 != d.b {
 			t.Errorf("%s, expected %v, got %v", d.d, d.b, b1)
 		}
 	}
 }
 func TestItemAdd(t *testing.T) {
 	it := item{}
 	it.add("www.example.org")
 	if !it.exists("www.example.org") {
 		t.Errorf("add failed")
 	}
 }
 func TestHostitem(t *testing.T) {
 	ht := hostitem{}
 	testdata := []hostentry{
 		{"www.google.com", "127.0.0.1", 1},
 		{"www.google.com", "127.0.0.2", 28},
 		{"www.example.org", "127.0.0.3", 28},
 		{"www.abc.org", "127.0.0.4", 1},
 	}
 	for _, d := range testdata {
 		ht.add(d.domain, d.ip, d.t)
 		ip := ht.get(d.domain, d.t)
 		if ip != d.ip {
 			t.Errorf("%s, expected %s, got %s", d.domain, d.ip, ip)
 		}
 	}
 	//fmt.Printf("%v\n", ht)
 }
--- a/config.go
+++ b/config.go
@ -1,33 +0,0 @@
 package main
 import (
 	"os"
 	"github.com/go-yaml/yaml"
 )
 type conf struct {
 	UpstreamServers  []string `yaml:"upstream_servers"`
 	BootstrapServers []string `yaml:"bootstrap_servers"`
 	Listen           []listen `yaml:"listen"`
 	UpstreamTimeout  int      `yaml:"upstream_timeout"`
 	UpstreamInsecure bool     `yaml:"upstream_insecure"`
 }
 type listen struct {
 	Addr string `yaml:"addr"`
 	Cert string `yaml:"cert"`
 	Key  string `yaml:"key"`
 }
 func loadConfig(f string) (*conf, error) {
 	data, err := os.ReadFile(f)
 	if err != nil {
 		return nil, err
 	}
 	var c conf
 	if err := yaml.Unmarshal(data, &c); err != nil {
 		return nil, err
 	}
 	return &c, nil
 }
--- a/config_example.yaml
+++ b/config_example.yaml
@ -1,40 +1,53 @@
-# upstream servers
+
 # support DoH(DNS over https/http2), tcp, udp and tls(dns over tls)
 upstream_servers:
  - https://cloudflare-dns.com/dns-query
  - tcp://1.0.0.1:53
  - udp://1.0.0.1:53
  - tls://cloudflare-dns:853
 # bootstrap dns server,
 # this used to resolve the domain name used in Doh and TLS,
 # not needed if you don't use DoH and tls
 bootstrap_servers:
  - tcp://1.0.0.1:53
  - udp://1.0.0.1:53
 # listen ports
 listen:
-  -
+    - 
-    addr: tcp://0.0.0.0:1053
+      network: tcp
-    cert:
+      host: 0.0.0.0
-    key:
+      port: 1053
-  -
+      
-    addr: udp://0.0.0.0:1053
+    - 
-    cert: 
+      network: udp
-    key:
+      host: 0.0.0.0
-  -
+      port: 1053
-    addr: https://0.0.0.0:1054/dns-query
+
-    cert: server.crt
+blacklistfile: ./testdata/blacklist.dat
-    key: server.key
+hostfile: ./testdata/hosts
-  -
+timeout: 2
-    addr: tls://0.0.0.1:1055
+debug: true
-    cert: server.crt
+
-    key: server.key
+defaultupstream:
-
+    -
-# timeout for upstream server, second
+        network: tcp
-upstream_timeout: 3
+        host: 8.8.8.8
-
+        port: 53
-# check upstream certificate or not
+    -
-# if you use self signed certificate, set this to true
+        network: udp
-upstream_insecure: false
+        host: 8.8.8.8
        port: 53
 forwardrules:
    - 
      domainfile: ./testdata/cn.dat
      server:
          - 
            network: tcp
            host: 114.114.114.114
            port: 53
    - 
      domainfile: testdata/us.dat
      server:
            - 
              network: tcp
              host: 8.8.8.8
              port: 53
            - 
              network: https_google
              host: 172.217.161.174
              port: 443
            - 
              network: https_cloudflare
              host: 1.1.1.1
              port: 443
--- a/go.mod
+++ b/go.mod
@ -1,22 +0,0 @@
 module github.com/fangdingjun/gdns
 go 1.17
 require (
 	github.com/fangdingjun/go-log/v5 v5.0.0
 	github.com/fangdingjun/protolistener v0.0.0-20210804081554-626e6590d6e7
 	github.com/go-yaml/yaml v2.1.0+incompatible
 	github.com/miekg/dns v1.1.43
 	golang.org/x/net v0.0.0-20210726213435-c6fcb2dbf985
 )
 require (
 	github.com/kr/pretty v0.3.0 // indirect
 	github.com/pires/go-proxyproto v0.6.1 // indirect
 	golang.org/x/crypto v0.0.0-20210711020723-a769d52b0f97 // indirect
 	golang.org/x/sys v0.0.0-20210630005230-0f9fa26af87c // indirect
 	golang.org/x/term v0.0.0-20210615171337-6886f2dfbf5b // indirect
 	golang.org/x/text v0.3.6 // indirect
 	gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect
 )
--- a/go.sum
+++ b/go.sum
@ -1,51 +0,0 @@
 github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
 github.com/fangdingjun/go-log/v5 v5.0.0 h1:vdh9Bk9C4ZFL6KoO6rII73zQIyaLf7hFdBvucO/ckiE=
 github.com/fangdingjun/go-log/v5 v5.0.0/go.mod h1:V012Oxo0/pSbccX4OFSp9MJglXwNsZo2ByBBorr7zzM=
 github.com/fangdingjun/protolistener v0.0.0-20210804081554-626e6590d6e7 h1:z5NlLvUNbGZxQhtUZELvIorAqpDmcIhGQXE5GdO7+5I=
 github.com/fangdingjun/protolistener v0.0.0-20210804081554-626e6590d6e7/go.mod h1:ljbjhI4fVrT5GwMu1iBhWTZwLJSqsXKwKlGKas5GudM=
 github.com/go-yaml/yaml v2.1.0+incompatible h1:RYi2hDdss1u4YE7GwixGzWwVo47T8UQwnTLB6vQiq+o=
 github.com/go-yaml/yaml v2.1.0+incompatible/go.mod h1:w2MrLa16VYP0jy6N7M5kHaCkaLENm+P+Tv+MfurjSw0=
 github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
 github.com/kr/pretty v0.2.1/go.mod h1:ipq/a2n7PKx3OHsz4KJII5eveXtPO4qwEXGdVfWzfnI=
 github.com/kr/pretty v0.3.0 h1:WgNl7dwNpEZ6jJ9k1snq4pZsg7DOEN8hP9Xw0Tsjwk0=
 github.com/kr/pretty v0.3.0/go.mod h1:640gp4NfQd8pI5XOwp5fnNeVWj67G7CFk/SaSQn7NBk=
 github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
 github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
 github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
 github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
 github.com/miekg/dns v1.1.43 h1:JKfpVSCB84vrAmHzyrsxB5NAr5kLoMXZArPSw7Qlgyg=
 github.com/miekg/dns v1.1.43/go.mod h1:+evo5L0630/F6ca/Z9+GAqzhjGyn8/c+TBaOyfEl0V4=
 github.com/pires/go-proxyproto v0.6.0/go.mod h1:Odh9VFOZJCf9G8cLW5o435Xf1J95Jw9Gw5rnCjcwzAY=
 github.com/pires/go-proxyproto v0.6.1 h1:EBupykFmo22SDjv4fQVQd2J9NOoLPmyZA/15ldOGkPw=
 github.com/pires/go-proxyproto v0.6.1/go.mod h1:Odh9VFOZJCf9G8cLW5o435Xf1J95Jw9Gw5rnCjcwzAY=
 github.com/rogpeppe/go-internal v1.6.1 h1:/FiVV8dS/e+YqF2JvO3yXRFbBLTIuSDkuC7aBOAvL+k=
 github.com/rogpeppe/go-internal v1.6.1/go.mod h1:xXDCJY+GAPziupqXw64V24skbSoqbTEfhy4qGm1nDQc=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20210711020723-a769d52b0f97 h1:/UOmuWzQfxxo9UtlXMwuQU8CMgg1eZXqTRwkSQJWKOI=
 golang.org/x/crypto v0.0.0-20210711020723-a769d52b0f97/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
 golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
 golang.org/x/net v0.0.0-20210726213435-c6fcb2dbf985 h1:4CSI6oo7cOjJKajidEljs9h+uP0rRZBPPPhcCbj5mw8=
 golang.org/x/net v0.0.0-20210726213435-c6fcb2dbf985/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
 golang.org/x/sync v0.0.0-20210220032951-036812b2e83c h1:5KslGYwFpkhGh+Q16bwMP3cOontH8FOep7tGV86Y7SQ=
 golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210303074136-134d130e1a04/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20210630005230-0f9fa26af87c h1:F1jZWGFhYfh0Ci55sIpILtKKK8p3i2/krTr0H1rg74I=
 golang.org/x/sys v0.0.0-20210630005230-0f9fa26af87c/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/term v0.0.0-20210615171337-6886f2dfbf5b h1:9zKuko04nR4gjZ4+DNjHqRlAJqbJETHwiNKDqTfOjfE=
 golang.org/x/term v0.0.0-20210615171337-6886f2dfbf5b/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.6 h1:aRYxNxv6iGQlyVaZmk6ZgYEDa+Jg18DxebPSrd6bg1M=
 golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=
 gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
 gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
 gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
--- a/google_httpdns.go
+++ b/google_httpdns.go
@ -0,0 +1,184 @@
 package main
 import (
 	"crypto/tls"
 	"encoding/json"
 	"fmt"
 	"io/ioutil"
 	"net"
 	"net/http"
 	"net/url"
 	"sync"
 	"time"
 	"github.com/miekg/dns"
 )
 // ServerAddr is Google dns server ip
 var ServerAddr = "74.125.200.100"
 var queryIPApi = "https://www.simicloud.com/media/httpbin/ip"
 // GoogleHTTPDns struct
 type GoogleHTTPDns struct {
 	myip string
 	l    sync.Mutex
 }
 func (h *GoogleHTTPDns) getMyIP() string {
 	if h.myip != "" {
 		return h.myip
 	}
 	go h.queryMyIP()
 	return ""
 }
 type ipAPI struct {
 	IP string `json:"origin"`
 }
 func (h *GoogleHTTPDns) queryMyIP() {
 	h.l.Lock()
 	defer h.l.Unlock()
 	if h.myip != "" {
 		//fmt.Printf("myip: %s\n", h.myip)
 		return
 	}
 	//fmt.Println("get ip...")
 	res, err := http.Get(queryIPApi)
 	if err != nil {
 		//fmt.Println(err)
 		return
 	}
 	defer res.Body.Close()
 	d, err := ioutil.ReadAll(res.Body)
 	if err != nil {
 		//fmt.Println(err)
 		return
 	}
 	//fmt.Printf("%s\n", string(d))
 	ip := ipAPI{}
 	err = json.Unmarshal(d, &ip)
 	if err != nil {
 		//fmt.Println(err)
 		return
 	}
 	//fmt.Printf("got: %s\n", ip.Ip)
 	h.myip = ip.IP
 }
 func (h *GoogleHTTPDns) getMyNet() string {
 	ip := h.getMyIP()
 	if ip == "" {
 		return ""
 	}
 	mask := net.IPv4Mask(255, 255, 255, 0)
 	ipByte := net.ParseIP(ip)
 	ipnet := net.IPNet{IP: ipByte.Mask(mask), Mask: mask}
 	return ipnet.String()
 }
 // Exchange send query to server and return the response
 func (h *GoogleHTTPDns) Exchange(m *dns.Msg, addr string) (*dns.Msg, time.Duration, error) {
 	name := m.Question[0].Name
 	t := dns.TypeToString[m.Question[0].Qtype]
 	mynet := h.getMyNet()
 	r, err := queryGoogleHTTPDNS(name, t, mynet, "", addr)
 	if err != nil {
 		return nil, 0, err
 	}
 	m1 := new(dns.Msg)
 	m1.SetRcode(m, r.Status)
 	for _, rr := range r.Answer {
 		_rr := fmt.Sprintf("%s %d IN %s %s", rr.Name, rr.TTL,
 			dns.TypeToString[uint16(rr.Type)], rr.Data)
 		an, err := dns.NewRR(_rr)
 		if err != nil {
 			return nil, 0, err
 		}
 		m1.Answer = append(m1.Answer, an)
 	}
 	m1.Truncated = r.TC
 	m1.RecursionDesired = r.RD
 	m1.RecursionAvailable = r.RA
 	m1.AuthenticatedData = r.AD
 	m1.CheckingDisabled = r.CD
 	return m1, 0, nil
 }
 // Response represent the dns response from server
 type Response struct {
 	Status           int
 	TC               bool
 	RD               bool
 	RA               bool
 	AD               bool
 	CD               bool
 	Question         []RR
 	Answer           []RR
 	Additional       []RR
 	EDNSClientSubnet string `json:"edns_client_subnet"`
 	Comment          string
 }
 // RR represent the RR record
 type RR struct {
 	Name string `json:"name"`
 	Type int    `json:"type"`
 	TTL  int
 	Data string `json:"data"`
 }
 var httpclient = &http.Client{
 	Timeout: 8 * time.Second,
 	Transport: &http.Transport{
 		TLSClientConfig:     &tls.Config{ServerName: "dns.google.com"},
 		TLSHandshakeTimeout: 5 * time.Second,
 	},
 }
 func queryGoogleHTTPDNS(name, t, ednsClientSubnet, padding, srvAddr string) (*Response, error) {
 	srvaddr := ServerAddr
 	if srvAddr != "" {
 		srvaddr = srvAddr
 	}
 	v := url.Values{}
 	v.Add("name", name)
 	v.Add("type", t)
 	if ednsClientSubnet != "" {
 		v.Add("edns_client_subnet", ednsClientSubnet)
 	}
 	if padding != "" {
 		v.Add("random_padding", padding)
 	}
 	u := fmt.Sprintf("https://%s/resolve?%s", srvaddr, v.Encode())
 	r, _ := http.NewRequest("GET", u, nil)
 	r.Host = "dns.google.com"
 	//r.URL.Host = "dns.google.com"
 	res, err := httpclient.Do(r)
 	if err != nil {
 		return nil, err
 	}
 	defer res.Body.Close()
 	data, err := ioutil.ReadAll(res.Body)
 	if err != nil {
 		return nil, err
 	}
 	d := Response{}
 	err = json.Unmarshal(data, &d)
 	if err != nil {
 		return nil, err
 	}
 	return &d, nil
 }
--- a/handler.go
+++ b/handler.go
@ -0,0 +1,177 @@
 package main
 import (
 	"errors"
 	"fmt"
 	"strings"
 	"time"
 	"github.com/fangdingjun/go-log"
 	"github.com/miekg/dns"
 )
 type dnsClient interface {
 	Exchange(m *dns.Msg, addr string) (*dns.Msg, time.Duration, error)
 }
 type dnsHandler struct {
 	cfg         *conf
 	tcpclient   dnsClient
 	udpclient   dnsClient
 	httpsgoogle dnsClient
 	httpscf     dnsClient
 }
 func newDNSHandler(cfg *conf) *dnsHandler {
 	return &dnsHandler{
 		cfg:         cfg,
 		tcpclient:   &dns.Client{Net: "tcp", Timeout: 8 * time.Second, UDPSize: 4096},
 		udpclient:   &dns.Client{Net: "udp", Timeout: 5 * time.Second, UDPSize: 4096},
 		httpsgoogle: &GoogleHTTPDns{},
 		httpscf:     &CloudflareHTTPDns{},
 	}
 }
 // ServerDNS implements the dns.Handler interface
 func (h *dnsHandler) ServeDNS(w dns.ResponseWriter, r *dns.Msg) {
 	domain := r.Question[0].Name
 	if ok := h.answerFromHosts(w, r); ok {
 		return
 	}
 	srvs := h.getUpstreamServer(domain)
 	if srvs == nil {
 		srvs = h.cfg.DefaultUpstream
 	}
 	if msg, err := h.getAnswerFromUpstream(r, srvs); err == nil {
 		w.WriteMsg(msg)
 		return
 	}
 	dns.HandleFailed(w, r)
 }
 func (h *dnsHandler) getUpstreamServer(domain string) []addr {
 	for _, srv := range h.cfg.ForwardRules {
 		if ok := srv.domains.has(strings.Trim(domain, ".")); ok {
 			return srv.Server
 		}
 	}
 	return nil
 }
 func (h *dnsHandler) queryUpstream(r *dns.Msg, srv addr, ch chan *dns.Msg) {
 	var m *dns.Msg
 	var err error
 	switch srv.Network {
 	case "tcp":
 		log.Debugf("query %s IN %s, forward to %s:%d through tcp",
 			r.Question[0].Name,
 			dns.TypeToString[r.Question[0].Qtype],
 			srv.Host,
 			srv.Port)
 		m, _, err = h.tcpclient.Exchange(r, fmt.Sprintf("%s:%d", srv.Host, srv.Port))
 	case "udp":
 		log.Debugf("query %s IN %s, forward to %s:%d through udp",
 			r.Question[0].Name,
 			dns.TypeToString[r.Question[0].Qtype],
 			srv.Host,
 			srv.Port)
 		m, _, err = h.udpclient.Exchange(r, fmt.Sprintf("%s:%d", srv.Host, srv.Port))
 	case "https_google":
 		log.Debugf("query %s IN %s, forward to %s:%d through google https",
 			r.Question[0].Name,
 			dns.TypeToString[r.Question[0].Qtype],
 			srv.Host,
 			srv.Port)
 		m, _, err = h.httpsgoogle.Exchange(r, fmt.Sprintf("%s:%d", srv.Host, srv.Port))
 	case "https_cloudflare":
 		log.Debugf("query %s IN %s, forward to %s:%d through cloudflare https",
 			r.Question[0].Name,
 			dns.TypeToString[r.Question[0].Qtype],
 			srv.Host,
 			srv.Port)
 		m, _, err = h.httpscf.Exchange(r, srv.Host)
 	default:
 		err = fmt.Errorf("not supported type %s", srv.Network)
 	}
 	if err != nil {
 		log.Errorf("%s", err)
 		return
 	}
 	select {
 	case ch <- m:
 	default:
 	}
 }
 func (h *dnsHandler) getAnswerFromUpstream(r *dns.Msg, servers []addr) (*dns.Msg, error) {
 	ch := make(chan *dns.Msg, len(servers))
 	for _, srv := range servers {
 		go func(a addr) {
 			h.queryUpstream(r, a, ch)
 		}(srv)
 	}
 	var savedErr *dns.Msg
 	for {
 		select {
 		case m := <-ch:
 			if m.Rcode == dns.RcodeSuccess && !h.inBlacklist(m) {
 				return m, nil
 			}
 			savedErr = m
 		case <-time.After(time.Duration(h.cfg.Timeout) * time.Second):
 			if savedErr != nil {
 				return savedErr, nil
 			}
 			log.Debugf("query %s IN %s, timeout", r.Question[0].Name, dns.TypeToString[r.Question[0].Qtype])
 			return nil, errors.New("timeout")
 		}
 	}
 }
 func (h *dnsHandler) inBlacklist(m *dns.Msg) bool {
 	var ip string
 	for _, rr := range m.Answer {
 		if a, ok := rr.(*dns.A); ok {
 			ip = a.A.String()
 		} else if aaaa, ok := rr.(*dns.AAAA); ok {
 			ip = aaaa.AAAA.String()
 		} else {
 			ip = ""
 		}
 		if ip != "" && h.cfg.blacklist.exists(ip) {
 			log.Debugf("%s in blacklist", ip)
 			return true
 		}
 	}
 	return false
 }
 func (h *dnsHandler) answerFromHosts(w dns.ResponseWriter, r *dns.Msg) bool {
 	domain := r.Question[0].Name
 	t := r.Question[0].Qtype
 	ip := h.cfg.hosts.get(strings.Trim(domain, "."), int(t))
 	if ip != "" {
 		rr, _ := dns.NewRR(fmt.Sprintf("%s 3600 IN %s %s", domain, dns.TypeToString[t], ip))
 		if rr == nil {
 			return false
 		}
 		msg := new(dns.Msg)
 		msg.SetReply(r)
 		msg.Answer = append(msg.Answer, rr)
 		w.WriteMsg(msg)
 		log.Debugf("query %s IN %s, reply from hosts", domain, dns.TypeToString[t])
 		return true
 	}
 	return false
 }
--- a/main.go
+++ b/main.go
@ -1,67 +0,0 @@
 package main
 import (
 	"flag"
 	"fmt"
 	"os"
 	"os/signal"
 	"syscall"
 	log "github.com/fangdingjun/go-log/v5"
 )
 var cfg *conf
 func main() {
 	var configfile string
 	var logFileCount int
 	var logFileSize int64
 	var loglevel string
 	var logfile string
 	flag.StringVar(&logfile, "log_file", "", "log file, default stdout")
 	flag.IntVar(&logFileCount, "log_count", 10, "max count of log to keep")
 	flag.Int64Var(&logFileSize, "log_size", 10, "max log file size MB")
 	flag.StringVar(&loglevel, "log_level", "INFO",
 		"log level, values:\nOFF, FATAL, PANIC, ERROR, WARN, INFO, DEBUG")
 	flag.StringVar(&configfile, "c", "gdns.yaml", "config file")
 	flag.Parse()
 	if logfile != "" {
 		log.Default.Out = &log.FixedSizeFileWriter{
 			MaxCount: logFileCount,
 			Name:     logfile,
 			MaxSize:  logFileSize * 1024 * 1024,
 		}
 	}
 	if loglevel != "" {
 		lv, err := log.ParseLevel(loglevel)
 		if err != nil {
 			fmt.Fprintln(os.Stderr, err)
 			os.Exit(1)
 		}
 		log.Default.Level = lv
 	}
 	_cfg, err := loadConfig(configfile)
 	if err != nil {
 		log.Fatal(err)
 	}
 	cfg = _cfg
 	if cfg.UpstreamTimeout == 0 {
 		cfg.UpstreamTimeout = 5
 	}
 	initDNSClient(cfg)
 	log.Debugf("%+v", cfg)
 	makeServers(cfg)
 	ch := make(chan os.Signal, 2)
 	signal.Notify(ch, syscall.SIGINT, syscall.SIGTERM)
 	s := <-ch
 	log.Errorf("received signal %s, exit...", s)
 	log.Println("exit.")
 }
--- a/middleware.go
+++ b/middleware.go
@ -1,56 +0,0 @@
 package main
 import (
 	"net/http"
 	log "github.com/fangdingjun/go-log/v5"
 )
 type logHandler struct {
 	status int
 	w      http.ResponseWriter
 	size   int
 }
 func (lh *logHandler) WriteHeader(status int) {
 	lh.status = status
 	lh.w.WriteHeader(status)
 }
 func (lh *logHandler) Write(buf []byte) (int, error) {
 	lh.size += len(buf)
 	return lh.w.Write(buf)
 }
 func (lh *logHandler) Header() http.Header {
 	return lh.w.Header()
 }
 func (lh *logHandler) Status() int {
 	if lh.status != 0 {
 		return lh.status
 	}
 	return 200
 }
 var _ http.ResponseWriter = &logHandler{}
 // LogHandler is a log middleware
 // record request log
 func LogHandler(handler http.Handler) http.Handler {
 	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		defer func() {
 			if err := recover(); err != nil {
 				log.Error(err)
 				w.WriteHeader(http.StatusInternalServerError)
 				log.Infof("\"%s - %s %s %s\" - %d %d \"%s\"",
 					r.RemoteAddr, r.Method, r.RequestURI, r.Proto, 500, 0, r.UserAgent())
 			}
 		}()
 		lh := &logHandler{w: w}
 		handler.ServeHTTP(lh, r)
 		log.Infof("\"%s - %s %s %s\" - %d %d \"%s\"",
 			r.RemoteAddr, r.Method, r.RequestURI, r.Proto, lh.Status(), lh.size, r.UserAgent())
 	})
 }
--- a/server.go
+++ b/server.go
@ -1,158 +1,67 @@
 package main
 import (
-	"crypto/tls"
+	"flag"
 	"fmt"
-	"net"
+	"os"
 	"net/http"
 	"net/url"
 	"strconv"
-	log "github.com/fangdingjun/go-log/v5"
+	"github.com/fangdingjun/go-log"
-	"github.com/fangdingjun/protolistener"
+	"github.com/fangdingjun/go-log/formatters"
 	"github.com/fangdingjun/go-log/writers"
 	"github.com/miekg/dns"
 )
-type server struct {
+func main() {
-	addr      *url.URL
+	var configfile string
-	cert      string
+	var logfile string
-	key       string
+	var loglevel string
-	upstreams []*url.URL
+	var logFileSize int64
-}
+	var logFileCount int
-
+
-func (srv *server) serve() {
+	flag.StringVar(&configfile, "c", "config.yaml", "config file")
-	switch srv.addr.Scheme {
+	flag.StringVar(&logfile, "log_file", "", "log file, default stdout")
-	case "udp":
+	flag.IntVar(&logFileCount, "log_count", 10, "max count of log to keep")
-		srv.serveUDP()
+	flag.Int64Var(&logFileSize, "log_size", 10, "max log file size MB")
-	case "tcp":
+	flag.StringVar(&loglevel, "log_level", "INFO", "log level, values:\nOFF, FATAL, PANIC, ERROR, WARN, INFO, DEBUG")
-		srv.serveTCP()
+	flag.Parse()
-	case "tls":
+
-		srv.serveTLS()
+	if logfile != "" {
-	case "http":
+		log.Default.Out = &writers.FixedSizeFileWriter{
-		srv.serveHTTP()
+			MaxCount: logFileCount,
-	case "https":
+			Name:     logfile,
-		srv.serveHTTP()
+			MaxSize:  logFileSize * 1024 * 1024,
 	default:
 		log.Fatalf("unsupported type %s", srv.addr.Scheme)
 	}
 }
 func (srv *server) serveUDP() {
 	ip, port, _ := net.SplitHostPort(srv.addr.Host)
 	_ip := net.ParseIP(ip)
 	_port, _ := strconv.Atoi(port)
 	udpconn, err := net.ListenUDP("udp", &net.UDPAddr{IP: _ip, Port: _port})
 	if err != nil {
 		log.Fatalf("listen udp error %s", err)
 	}
 	defer udpconn.Close()
 	buf := make([]byte, 4096)
 	for {
 		n, addr, err := udpconn.ReadFrom(buf)
 		if err != nil {
 			log.Debugln(err)
 			break
 		}
 		buf1 := make([]byte, n)
 		copy(buf1, buf[:n])
 		go srv.handleUDP(buf1, addr, udpconn)
 	}
 }
 func (srv *server) serveTCP() {
 	l, err := net.Listen("tcp", srv.addr.Host)
 	if err != nil {
 		log.Fatalln("listen tcp", err)
 	}
 	defer l.Close()
 	log.Debugf("listen tcp://%s", l.Addr().String())
 	for {
 		conn, err := l.Accept()
 		if err != nil {
 			log.Debugln(err)
 			break
 		}
 		go srv.handleTCP(conn)
 	}
 }
 func (srv *server) serveTLS() {
 	cert, err := tls.LoadX509KeyPair(srv.cert, srv.key)
 	if err != nil {
 		log.Fatalln("load certificate failed", err)
 	}
 	l, err := net.Listen("tcp", srv.addr.Host)
 	if err != nil {
 		log.Fatalln("listen tls", err)
 	}
 	defer l.Close()
-	log.Debugf("listen tls://%s", l.Addr().String())
+	if loglevel != "" {
-	tl := tls.NewListener(protolistener.New(l), &tls.Config{
+		lv, err := log.ParseLevel(loglevel)
 		Certificates: []tls.Certificate{cert},
 		//NextProtos:   []string{"h2"},
 	})
 	for {
 		conn, err := tl.Accept()
 		if err != nil {
-			log.Debugln("tls accept", err)
+			fmt.Fprintln(os.Stderr, err)
-			break
+			os.Exit(1)
 		}
-		go srv.handleTCP(conn)
+		log.Default.Level = lv
 	}
 }
 func (srv *server) serveHTTP() {
 	log.Debugf("listen %s://%s", srv.addr.Scheme, srv.addr.Host)
-	l, err := net.Listen("tcp", srv.addr.Host)
+	log.Default.Formatter = &formatters.TextFormatter{TimeFormat: "2006-01-02 15:04:05.000"}
 	if err != nil {
 		log.Fatalln("listen https", err)
 	}
 	defer l.Close()
-	httpsrv := &http.Server{
+	config, err := loadConfig(configfile)
 		Handler: LogHandler(srv),
 	}
 	switch srv.addr.Scheme {
 	case "http":
 		err = httpsrv.Serve(protolistener.New(l))
 	case "https":
 		err = httpsrv.ServeTLS(protolistener.New(l), srv.cert, srv.key)
 	default:
 		err = fmt.Errorf("not supported %s", srv.addr.Scheme)
 	}
 	if err != nil {
 		log.Fatal(err)
 	}
 }
-func makeServers(c *conf) {
+	log.Debugf("config: %+v", config)
 	upstreams := []*url.URL{}
-	for _, a := range c.UpstreamServers {
+	h := newDNSHandler(config)
 		u, err := url.Parse(a)
 		if err != nil {
 			log.Fatal(err)
 		}
 		upstreams = append(upstreams, u)
 	}
-	for _, l := range c.Listen {
+	for _, l := range config.Listen {
-		u, err := url.Parse(l.Addr)
+		go func(l addr) {
-		if err != nil {
+			log.Infof("listen on %s %s:%d", l.Network, l.Host, l.Port)
-			log.Fatal(err)
+			if err := dns.ListenAndServe(
-		}
+				fmt.Sprintf("%s:%d", l.Host, l.Port), l.Network, h); err != nil {
-		srv := &server{
+				log.Fatal(err)
-			addr:      u,
+			}
-			cert:      l.Cert,
+		}(l)
 			key:       l.Key,
 			upstreams: upstreams,
 		}
 		go srv.serve()
 	}
 	select {}
 }
--- a/server_https.go
+++ b/server_https.go
@ -1,66 +0,0 @@
 package main
 import (
 	"io"
 	"net/http"
 	log "github.com/fangdingjun/go-log/v5"
 	"github.com/miekg/dns"
 )
 const dnsMsgType = "application/dns-message"
 func (srv *server) handleHTTPReq(w http.ResponseWriter, r *http.Request) {
 	/*
 		ctype := r.Header.Get("content-type")
 		if !strings.HasPrefix(ctype, dnsMsgType) {
 			log.Errorf("request type %s, require %s", ctype, dnsMsgType)
 			http.Error(w, "dns message is required", http.StatusBadRequest)
 			return
 		}
 	*/
 	if r.ContentLength < 10 {
 		log.Errorf("message is too small, %v", r.ContentLength)
 		http.Error(w, "message is too small", http.StatusBadRequest)
 		return
 	}
 	data, err := io.ReadAll(r.Body)
 	if err != nil {
 		log.Errorln("read request body", err)
 		http.Error(w, "read request failed", http.StatusBadRequest)
 		return
 	}
 	msg := new(dns.Msg)
 	if err := msg.Unpack(data); err != nil {
 		log.Errorln("parse dns message", err)
 		http.Error(w, "parse dns message error", http.StatusBadRequest)
 		return
 	}
 	m, err := getResponseFromUpstream(msg, srv.upstreams)
 	if err != nil {
 		log.Debugln("query", msg.Question[0].String(), "timeout")
 		http.Error(w, "query upstream server failed", http.StatusServiceUnavailable)
 		return
 	}
 	for _, a := range m.Answer {
 		log.Debugln("result", a.String())
 	}
 	w.Header().Set("content-type", dnsMsgType)
 	d, _ := m.Pack()
 	if _, err := w.Write(d); err != nil {
 		log.Errorln(err)
 	}
 }
 func (srv *server) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	if r.RequestURI != srv.addr.Path {
 		http.Error(w, "Path not found", http.StatusNotFound)
 		return
 	}
 	srv.handleHTTPReq(w, r)
 }
--- a/server_tcp.go
+++ b/server_tcp.go
@ -1,35 +0,0 @@
 package main
 import (
 	"net"
 	log "github.com/fangdingjun/go-log/v5"
 	"github.com/miekg/dns"
 )
 func (srv *server) handleTCP(c net.Conn) {
 	defer c.Close()
 	log.Debugln("tcp from", c.RemoteAddr())
 	conn := dns.Conn{Conn: c}
 	for {
 		msg, err := conn.ReadMsg()
 		if err != nil {
 			log.Debugln("tcp read message", err)
 			break
 		}
 		m, err := getResponseFromUpstream(msg, srv.upstreams)
 		if err != nil {
 			log.Debugln("query", msg.Question[0].String(), "timeout")
 			break
 		}
 		for _, a := range m.Answer {
 			log.Debugln("result", a.String())
 		}
 		if err := conn.WriteMsg(m); err != nil {
 			log.Errorln(err)
 			break
 		}
 	}
 }
--- a/server_udp.go
+++ b/server_udp.go
@ -1,30 +0,0 @@
 package main
 import (
 	"net"
 	log "github.com/fangdingjun/go-log/v5"
 	"github.com/miekg/dns"
 )
 func (srv *server) handleUDP(buf []byte, addr net.Addr, conn *net.UDPConn) {
 	msg := new(dns.Msg)
 	if err := msg.Unpack(buf); err != nil {
 		log.Debugln("udp parse msg", err)
 		return
 	}
 	m, err := getResponseFromUpstream(msg, srv.upstreams)
 	if err != nil {
 		log.Debugln("query", msg.Question[0].String(), "timeout")
 		return
 	}
 	for _, a := range m.Answer {
 		log.Debugln("result", a.String())
 	}
 	d, _ := m.Pack()
 	if _, err := conn.WriteTo(d, addr); err != nil {
 		log.Errorln(err)
 	}
 }
--- a/testdata/blacklist.dat
+++ b/testdata/blacklist.dat
@ -0,0 +1,5 @@
 # asdfas
 1.2.3.4
 2.3.1.21
 3.1.1.1
--- a/testdata/cn.dat
+++ b/testdata/cn.dat
@ -0,0 +1,8 @@
 #12
 a.com
 b.org
 cn
 c.net
--- a/testdata/config.yaml
+++ b/testdata/config.yaml
@ -0,0 +1,31 @@
 listen:
    - network: tcp
      host: 0.0.0.0
      port: 1053
    - network: udp
      host: 0.0.0.0
      port: 1053
 blacklistfile: ./testdata/blacklist.dat
 hostfile: ./testdata/hosts
 timeout: 2
 debug: true
 forwardrules:
    - domainfile: ./testdata/cn.dat
      server:
          - network: tcp
            host: 114.114.114.114
            port: 53
    - domainfile: testdata/us.dat
      server:
            - network: tcp
              host: 8.8.8.8
              port: 53
            - network: https
              host: 74.175.200.200
              port: 443
--- a/testdata/hosts
+++ b/testdata/hosts
@ -0,0 +1,9 @@
 #asdf
 1.2.3.1 a.com b.com c.aaa
 1.2.9.1 addd bbb ddd aa
 ::1 localhost
 127.0.0.1 localhost
 1.2.1.1 kkddaso
 # daas
--- a/testdata/us.dat
+++ b/testdata/us.dat
@ -0,0 +1,12 @@
 #
 us
 b.cc
 a.cc
 dda
 # da
 a.cf
 d.com
--- a/upstream.go
+++ b/upstream.go
@ -1,201 +0,0 @@
 package main
 import (
 	"bufio"
 	"context"
 	"crypto/tls"
 	"errors"
 	"fmt"
 	"net"
 	"net/http"
 	"net/url"
 	"os"
 	"strings"
 	"time"
 	log "github.com/fangdingjun/go-log/v5"
 	"github.com/miekg/dns"
 	"golang.org/x/net/http2"
 )
 var dnsClientTCP *dns.Client
 var dnsClientUDP *dns.Client
 var dnsClientTLS *dns.Client
 var dnsClientHTTPS *httpclient
 func getResponseFromUpstream(msg *dns.Msg, upstreams []*url.URL) (*dns.Msg, error) {
 	ctx, cancel := context.WithTimeout(context.Background(), time.Duration(cfg.UpstreamTimeout+1)*time.Second)
 	defer cancel()
 	resch := make(chan *dns.Msg, len(upstreams))
 	for _, up := range upstreams {
 		go func(u *url.URL) {
 			m, err := queryUpstream(msg, u)
 			if err == nil {
 				resch <- m
 				return
 			}
 			log.Errorln(u.String(), err)
 		}(up)
 	}
 	var errmsg *dns.Msg
 	for i := 0; i < len(upstreams); i++ {
 		select {
 		case <-ctx.Done():
 			return nil, errors.New("time out")
 		case m := <-resch:
 			if m.MsgHdr.Rcode == dns.RcodeSuccess {
 				return m, nil
 			}
 			errmsg = m
 		}
 	}
 	if errmsg != nil {
 		return errmsg, nil
 	}
 	return nil, errors.New("empty result")
 }
 func queryUpstream(msg *dns.Msg, upstream *url.URL) (*dns.Msg, error) {
 	switch upstream.Scheme {
 	case "tcp":
 		return queryUpstreamTCP(msg, upstream)
 	case "https":
 		return queryUpstreamHTTPS(msg, upstream)
 	case "udp":
 		return queryUpstreamUDP(msg, upstream)
 	case "tls":
 		return queryUpstreamTLS(msg, upstream)
 	default:
 	}
 	return nil, errors.New("unknown upstream type")
 }
 func queryUpstreamUDP(msg *dns.Msg, upstream *url.URL) (*dns.Msg, error) {
 	m, _, err := dnsClientUDP.Exchange(msg, upstream.Host)
 	if err != nil {
 		log.Debugf("query udp error %s", err)
 	}
 	return m, err
 }
 func queryUpstreamTCP(msg *dns.Msg, upstream *url.URL) (*dns.Msg, error) {
 	m, _, err := dnsClientTCP.Exchange(msg, upstream.Host)
 	if err != nil {
 		log.Debugf("query tcp error %s", err)
 	}
 	return m, err
 }
 func queryUpstreamTLS(msg *dns.Msg, upstream *url.URL) (*dns.Msg, error) {
 	m, _, err := dnsClientTLS.Exchange(msg, upstream.Host)
 	if err != nil {
 		log.Debugf("query tls error %s", err)
 	}
 	return m, err
 }
 func queryUpstreamHTTPS(msg *dns.Msg, upstream *url.URL) (*dns.Msg, error) {
 	m, _, err := dnsClientHTTPS.Exchange(msg, upstream.String())
 	if err != nil {
 		log.Debugf("query https error %s", err)
 	}
 	return m, err
 }
 func initDNSClient(c *conf) {
 	var resolver = new(net.Resolver)
 	if len(c.BootstrapServers) > 0 {
 		log.Debugf("init dns client, bootstrap servers %v", c.BootstrapServers)
 		resolver = &net.Resolver{
 			Dial: func(ctx context.Context, network, addr string) (net.Conn, error) {
 				for _, a := range c.BootstrapServers {
 					u, _ := url.Parse(a)
 					conn, err := net.Dial(u.Scheme, u.Host)
 					if err == nil {
 						return conn, err
 					}
 				}
 				return nil, errors.New("dial failed")
 			},
 		}
 	}
 	dialer := &net.Dialer{
 		Resolver: resolver,
 	}
 	dnsClientTLS = &dns.Client{
 		Net:     "tcp-tls",
 		Timeout: time.Duration(c.UpstreamTimeout) * time.Second,
 		Dialer:  dialer,
 		TLSConfig: &tls.Config{
 			InsecureSkipVerify: c.UpstreamInsecure,
 		},
 	}
 	dnsClientUDP = &dns.Client{
 		Net:     "udp",
 		Timeout: time.Duration(c.UpstreamTimeout) * time.Second,
 	}
 	dnsClientTCP = &dns.Client{
 		Net:     "tcp",
 		Timeout: time.Duration(c.UpstreamTimeout) * time.Second,
 	}
 	dnsClientHTTPS = &httpclient{
 		Net:     "https",
 		Timeout: time.Duration(c.UpstreamTimeout) * time.Second,
 		HTTPClient: &http.Client{
 			Transport: &http2.Transport{
 				DialTLS: func(network, addr string, cfg *tls.Config) (net.Conn, error) {
 					log.Debugln("dial to", network, addr)
 					p := os.Getenv("https_proxy")
 					if p == "" {
 						p = os.Getenv("http_proxy")
 					}
 					if p == "" {
 						conn, err := tls.DialWithDialer(dialer, network, addr, cfg)
 						return conn, err
 					}
 					u, _ := url.Parse(p)
 					log.Debugf("dial to proxy %s", u.Host)
 					conn, err := net.Dial(network, u.Host)
 					if err != nil {
 						return nil, err
 					}
 					fmt.Fprintf(conn, "CONNECT %s HTTP/1.1\r\nHost: %s\r\n\r\n", addr, addr)
 					r := bufio.NewReader(conn)
 					line, err := r.ReadString('\n')
 					if err != nil {
 						return nil, err
 					}
 					ss := strings.Fields(line)
 					if ss[1] != "200" {
 						return nil, fmt.Errorf("http code %s", ss[1])
 					}
 					for {
 						line, err := r.ReadString('\n')
 						if err != nil {
 							return nil, err
 						}
 						line = strings.Trim(line, "\r\n")
 						if line == "" {
 							break
 						}
 					}
 					tlsconn := tls.Client(conn, cfg)
 					if err = tlsconn.Handshake(); err != nil {
 						return nil, err
 					}
 					return tlsconn, nil
 				},
 				TLSClientConfig: &tls.Config{
 					InsecureSkipVerify: c.UpstreamInsecure,
 					NextProtos:         []string{"h2"},
 				},
 			},
 		},
 	}
 }