docs: explain how to use DNS-over-TLS with nginx/STunnel

chore: upgrade deps

.github/workflows/go.yml

@@ -0,0 +1,37 @@
+name: Go build for Linux
+on: [push, pull_request]
+jobs:
+
+  build:
+    name: Build
+    runs-on: ubuntu-18.04
+    steps:
+
+    - name: Set up Go
+      uses: actions/setup-go@v2
+      with:
+        go-version: 1.18
+      id: go
+
+    - name: Check out repository
+      uses: actions/checkout@v2
+
+    - name: Linux build
+      run: |
+        make
+
+    - name: Upload Linux build
+      uses: actions/upload-artifact@v2
+      with:
+        name: linux-amd64
+        path: |
+          doh-client/doh-client
+          doh-server/doh-server
+
+    - name: Cache
+      uses: actions/cache@v2
+      with:
+        # A directory to store and save the cache
+        path: ~/go/pkg/mod
+        # An explicit key for restoring and saving the cache
+        key: ${{ runner.os }}-${{ hashFiles('**/go.sum') }}

Changelog.md

@@ -4,6 +4,15 @@ This Changelog records major changes between versions.
 
 Not all changes are recorded. Please check git log for details.
 
+## Version 2.3.1
+
+- No new features in this release
+- Bumped versions of Go toolchain and third-party dependencies, requested by #128
+
+## Version 2.3.0
+
+- The repository now conforms to the Go semvar standard (Fixed #115, thanks to @leiless)
+
 ## Version 2.2.5
 
 - Add client certificate authentication

Makefile

@@ -1,15 +1,11 @@
-.PHONY: all clean install uninstall deps
+.PHONY: all clean install uninstall
 
 PREFIX = /usr/local
 
 ifeq ($(GOROOT),)
 GOBUILD = go build
-GOGET = go get -d -v
-GOGET_UPDATE = go get -d -u -v
 else
 GOBUILD = $(GOROOT)/bin/go build
-GOGET = $(GOROOT)/bin/go get -d -v
-GOGET_UPDATE = $(GOROOT)/bin/go get -d -u -v
 endif
 
 ifeq ($(shell uname),Darwin)
@@ -57,14 +53,8 @@ uninstall:
 		$(MAKE) -C launchd uninstall "DESTDIR=$(DESTDIR)"; \
 	fi
 
-deps:
+doh-client/doh-client: doh-client/client.go doh-client/config/config.go doh-client/google.go doh-client/ietf.go doh-client/main.go doh-client/version.go json-dns/error.go json-dns/globalip.go json-dns/marshal.go json-dns/response.go json-dns/unmarshal.go
-	@# I am not sure if it is the correct way to keep the common library updated
-	$(GOGET_UPDATE) github.com/m13253/dns-over-https/doh-client/config
-	$(GOGET_UPDATE) github.com/m13253/dns-over-https/json-dns
-	$(GOGET) ./doh-client ./doh-server
-
-doh-client/doh-client: deps doh-client/client.go doh-client/config/config.go doh-client/google.go doh-client/ietf.go doh-client/main.go doh-client/version.go json-dns/error.go json-dns/globalip.go json-dns/marshal.go json-dns/response.go json-dns/unmarshal.go
 	cd doh-client && $(GOBUILD)
 
-doh-server/doh-server: deps doh-server/config.go doh-server/google.go doh-server/ietf.go doh-server/main.go doh-server/server.go doh-server/version.go json-dns/error.go json-dns/globalip.go json-dns/marshal.go json-dns/response.go json-dns/unmarshal.go
+doh-server/doh-server: doh-server/config.go doh-server/google.go doh-server/ietf.go doh-server/main.go doh-server/server.go doh-server/version.go json-dns/error.go json-dns/globalip.go json-dns/marshal.go json-dns/response.go json-dns/unmarshal.go
 	cd doh-server && $(GOBUILD)

Readme.md

@@ -11,7 +11,7 @@ and [IETF DNS-over-HTTPS (RFC 8484)](https://www.rfc-editor.org/rfc/rfc8484.txt)
 
 ## Installing
 ### From Source
-- Install [Go](https://golang.org), at least version 1.10.
+- Install [Go](https://golang.org), at least version 1.13. The newer the better.
 > Note for Debian/Ubuntu users: You need to set `$GOROOT` if you could not get your new version of Go selected by the Makefile.)
 
 - First create an empty directory, used for `$GOPATH`:
@@ -56,15 +56,15 @@ sudo make uninstall
 
 ### Using docker image
 ```bash
-docker run -itd --name doh-server \
+docker run -d --name doh-server \
   -p 8053:8053 \
   -e UPSTREAM_DNS_SERVER="udp:8.8.8.8:53" \
   -e DOH_HTTP_PREFIX="/dns-query" \
   -e DOH_SERVER_LISTEN=":8053" \
   -e DOH_SERVER_TIMEOUT="10" \
   -e DOH_SERVER_TRIES="3" \
-  -e DOH_SERVER_VERBOSE="false"
+  -e DOH_SERVER_VERBOSE="false" \
-satishweb/doh-server
+  satishweb/doh-server
 ```
 
 ## Server Configuration
@@ -269,6 +269,24 @@ services:
 
 > IPV6 Support for Docker Compose based configuration TBA
 
+### Example configuration: DNS-over-TLS
+
+There is no native [DNS-over-TLS](https://en.wikipedia.org/wiki/DNS_over_TLS) support but you can easily add it via nginx:
+```
+stream {
+    server {
+        listen                  *:853 ssl;
+        proxy_pass              ipofyourdnsresolver:port  #127.0.0.1:53
+    }
+
+    ssl_certificate /etc/letsencrypt/live/site.yourdomain/fullchain.pem; 
+    ssl_certificate_key /etc/letsencrypt/live/site.yourdomain/privkey.pem; 
+}
+```
+
+The DoT service can also be provided by running a [STunnel](https://www.stunnel.org/) instance to wrap dnsmasq (or any other resolver of your choice, listening on a TCP port);
+this approach does not need a stand-alone daemon to provide the DoT service.
+
 ## DNSSEC
 
 DNS-over-HTTPS is compatible with DNSSEC, and requests DNSSEC signatures by

doh-client/client.go

@@ -38,9 +38,9 @@ import (
 	"sync"
 	"time"
 
-	"github.com/m13253/dns-over-https/doh-client/config"
+	"github.com/m13253/dns-over-https/v2/doh-client/config"
-	"github.com/m13253/dns-over-https/doh-client/selector"
+	"github.com/m13253/dns-over-https/v2/doh-client/selector"
-	jsondns "github.com/m13253/dns-over-https/json-dns"
+	jsondns "github.com/m13253/dns-over-https/v2/json-dns"
 	"github.com/miekg/dns"
 	"golang.org/x/net/http2"
 	"golang.org/x/net/idna"

doh-client/google.go

@@ -34,8 +34,8 @@ import (
 	"strconv"
 	"strings"
 
-	"github.com/m13253/dns-over-https/doh-client/selector"
+	"github.com/m13253/dns-over-https/v2/doh-client/selector"
-	jsondns "github.com/m13253/dns-over-https/json-dns"
+	jsondns "github.com/m13253/dns-over-https/v2/json-dns"
 	"github.com/miekg/dns"
 )
 

doh-client/ietf.go

@@ -35,8 +35,8 @@ import (
 	"strings"
 	"time"
 
-	"github.com/m13253/dns-over-https/doh-client/selector"
+	"github.com/m13253/dns-over-https/v2/doh-client/selector"
-	jsondns "github.com/m13253/dns-over-https/json-dns"
+	jsondns "github.com/m13253/dns-over-https/v2/json-dns"
 	"github.com/miekg/dns"
 )
 

doh-client/main.go

@@ -33,7 +33,7 @@ import (
 	"runtime"
 	"strconv"
 
-	"github.com/m13253/dns-over-https/doh-client/config"
+	"github.com/m13253/dns-over-https/v2/doh-client/config"
 )
 
 func checkPIDFile(pidFile string) (bool, error) {

doh-client/version.go

@@ -24,6 +24,6 @@
 package main
 
 const (
-	VERSION    = "2.2.5"
+	VERSION    = "2.3.2"
 	USER_AGENT = "DNS-over-HTTPS/" + VERSION + " (+https://github.com/m13253/dns-over-https)"
 )

doh-server/google.go

@@ -34,7 +34,7 @@ import (
 	"strings"
 	"time"
 
-	jsondns "github.com/m13253/dns-over-https/json-dns"
+	jsondns "github.com/m13253/dns-over-https/v2/json-dns"
 	"github.com/miekg/dns"
 	"golang.org/x/net/idna"
 )

doh-server/ietf.go

@@ -36,7 +36,7 @@ import (
 	"strings"
 	"time"
 
-	jsondns "github.com/m13253/dns-over-https/json-dns"
+	jsondns "github.com/m13253/dns-over-https/v2/json-dns"
 	"github.com/miekg/dns"
 )
 
@@ -206,7 +206,9 @@ func (s *Server) generateResponseIETF(ctx context.Context, w http.ResponseWriter
 // Workaround a bug causing DNSCrypt-Proxy to expect a response with TransactionID = 0xcafe
 func (s *Server) patchDNSCryptProxyReqID(w http.ResponseWriter, r *http.Request, requestBinary []byte) bool {
 	if strings.Contains(r.UserAgent(), "dnscrypt-proxy") && bytes.Equal(requestBinary, []byte("\xca\xfe\x01\x00\x00\x01\x00\x00\x00\x00\x00\x01\x00\x00\x02\x00\x01\x00\x00\x29\x10\x00\x00\x00\x80\x00\x00\x00")) {
-		log.Println("DNSCrypt-Proxy detected. Patching response.")
+		if s.conf.Verbose {
+			log.Println("DNSCrypt-Proxy detected. Patching response.")
+		}
 		w.Header().Set("Content-Type", "application/dns-message")
 		w.Header().Set("Vary", "Accept, User-Agent")
 		now := time.Now().UTC().Format(http.TimeFormat)
@@ -220,7 +222,9 @@ func (s *Server) patchDNSCryptProxyReqID(w http.ResponseWriter, r *http.Request,
 // Workaround a bug causing Firefox 61-62 to reject responses with Content-Type = application/dns-message
 func (s *Server) patchFirefoxContentType(w http.ResponseWriter, r *http.Request, req *DNSRequest) bool {
 	if strings.Contains(r.UserAgent(), "Firefox") && strings.Contains(r.Header.Get("Accept"), "application/dns-udpwireformat") && !strings.Contains(r.Header.Get("Accept"), "application/dns-message") {
-		log.Println("Firefox 61-62 detected. Patching response.")
+		if s.conf.Verbose {
+			log.Println("Firefox 61-62 detected. Patching response.")
+		}
 		w.Header().Set("Content-Type", "application/dns-udpwireformat")
 		w.Header().Set("Vary", "Accept, User-Agent")
 		req.isTailored = true

doh-server/server.go

@@ -38,7 +38,7 @@ import (
 	"time"
 
 	"github.com/gorilla/handlers"
-	jsondns "github.com/m13253/dns-over-https/json-dns"
+	jsondns "github.com/m13253/dns-over-https/v2/json-dns"
 	"github.com/miekg/dns"
 )
 
@@ -268,8 +268,7 @@ func (s *Server) handlerFunc(w http.ResponseWriter, r *http.Request) {
 
 	req = s.patchRootRD(req)
 
-	var err error
+	err := s.doDNSQuery(ctx, req)
-	req, err = s.doDNSQuery(ctx, req)
 	if err != nil {
 		jsondns.FormatError(w, fmt.Sprintf("DNS query failure (%s)", err.Error()), 503)
 		return
@@ -340,7 +339,7 @@ func (s *Server) indexQuestionType(msg *dns.Msg, qtype uint16) int {
 	return -1
 }
 
-func (s *Server) doDNSQuery(ctx context.Context, req *DNSRequest) (resp *DNSRequest, err error) {
+func (s *Server) doDNSQuery(ctx context.Context, req *DNSRequest) (err error) {
 	numServers := len(s.conf.Upstream)
 	for i := uint(0); i < s.conf.Tries; i++ {
 		req.currentUpstream = s.conf.Upstream[rand.Intn(numServers)]
@@ -350,7 +349,7 @@ func (s *Server) doDNSQuery(ctx context.Context, req *DNSRequest) (resp *DNSRequ
 		switch t {
 		default:
 			log.Printf("invalid DNS type %q in upstream %q", t, upstream)
-			return nil, &configError{"invalid DNS type"}
+			return &configError{"invalid DNS type"}
 		// Use DNS-over-TLS (DoT) if configured to do so
 		case "tcp-tls":
 			req.response, _, err = s.tcpClientTLS.ExchangeContext(ctx, req.request, upstream)
@@ -375,9 +374,9 @@ func (s *Server) doDNSQuery(ctx context.Context, req *DNSRequest) (resp *DNSRequ
 		}
 
 		if err == nil {
-			return req, nil
+			return nil
 		}
 		log.Printf("DNS error from upstream %s: %s\n", req.currentUpstream, err.Error())
 	}
-	return req, err
+	return err
 }

doh-server/version.go

@@ -24,6 +24,6 @@
 package main
 
 const (
-	VERSION    = "2.2.5"
+	VERSION    = "2.3.2"
 	USER_AGENT = "DNS-over-HTTPS/" + VERSION + " (+https://github.com/m13253/dns-over-https)"
 )

go.mod

@@ -1,13 +1,20 @@
-module github.com/m13253/dns-over-https
+module github.com/m13253/dns-over-https/v2
 
-go 1.12
+go 1.19
 
 require (
-	github.com/BurntSushi/toml v0.3.1
+	github.com/BurntSushi/toml v1.2.0
-	github.com/gorilla/handlers v1.4.0
+	github.com/gorilla/handlers v1.5.1
 	github.com/infobloxopen/go-trees v0.0.0-20200715205103-96a057b8dfb9
-	github.com/miekg/dns v1.1.41
+	github.com/miekg/dns v1.1.50
-	golang.org/x/crypto v0.0.0-20210322153248-0c34fe9e7dc2 // indirect
+	golang.org/x/net v0.0.0-20220812174116-3211cb980234
-	golang.org/x/net v0.0.0-20210324205630-d1beb07c2056
+)
-	golang.org/x/tools v0.0.0-20191216052735-49a3e744a425 // indirect
+
+require (
+	github.com/felixge/httpsnoop v1.0.1 // indirect
+	golang.org/x/mod v0.4.2 // indirect
+	golang.org/x/sys v0.0.0-20220728004956-3c1f35247d10 // indirect
+	golang.org/x/text v0.3.7 // indirect
+	golang.org/x/tools v0.1.6-0.20210726203631-07bc1bf47fb2 // indirect
+	golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 // indirect
 )

go.sum

@@ -1,48 +1,51 @@
-github.com/BurntSushi/toml v0.3.1 h1:WXkYYl6Yr3qBf1K79EBnL4mak0OimBfB0XUf9Vl28OQ=
+github.com/BurntSushi/toml v1.2.0 h1:Rt8g24XnyGTyglgET/PRUNlrUeu9F5L+7FilkXfZgs0=
-github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
+github.com/BurntSushi/toml v1.2.0/go.mod h1:CxXYINrC8qIiEnFrOxCa7Jy5BFHlXnUU2pbicEuybxQ=
-github.com/gorilla/handlers v1.4.0 h1:XulKRWSQK5uChr4pEgSE4Tc/OcmnU9GJuSwdog/tZsA=
+github.com/felixge/httpsnoop v1.0.1 h1:lvB5Jl89CsZtGIWuTcDM1E/vkVs49/Ml7JJe07l8SPQ=
-github.com/gorilla/handlers v1.4.0/go.mod h1:Qkdc/uu4tH4g6mTK6auzZ766c4CA0Ng8+o/OAirnOIQ=
+github.com/felixge/httpsnoop v1.0.1/go.mod h1:m8KPJKqk1gH5J9DgRY2ASl2lWCfGKXixSwevea8zH2U=
+github.com/gorilla/handlers v1.5.1 h1:9lRY6j8DEeeBT10CvO9hGW0gmky0BprnvDI5vfhUHH4=
+github.com/gorilla/handlers v1.5.1/go.mod h1:t8XrUpc4KVXb7HGyJ4/cEnwQiaxrX/hz1Zv/4g96P1Q=
 github.com/infobloxopen/go-trees v0.0.0-20200715205103-96a057b8dfb9 h1:w66aaP3c6SIQ0pi3QH1Tb4AMO3aWoEPxd1CNvLphbkA=
 github.com/infobloxopen/go-trees v0.0.0-20200715205103-96a057b8dfb9/go.mod h1:BaIJzjD2ZnHmx2acPF6XfGLPzNCMiBbMRqJr+8/8uRI=
-github.com/miekg/dns v1.1.31 h1:sJFOl9BgwbYAWOGEwr61FU28pqsBNdpRBnhGXtO06Oo=
+github.com/miekg/dns v1.1.50 h1:DQUfb9uc6smULcREF09Uc+/Gd46YWqJd5DbpPE9xkcA=
-github.com/miekg/dns v1.1.31/go.mod h1:KNUDUusw/aVsxyTYZM1oqvCicbwhgbNgztCETuNZ7xM=
+github.com/miekg/dns v1.1.50/go.mod h1:e3IlAVfNqAllflbibAZEWOXOQ+Ynzk/dDozDxY7XnME=
-github.com/miekg/dns v1.1.41 h1:WMszZWJG0XmzbK9FEmzH2TVcqYzFesusSIB41b8KHxY=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
-github.com/miekg/dns v1.1.41/go.mod h1:p6aan82bvRIyn+zDIv9xYNUpwa73JcSh9BKwknJysuI=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/yuin/goldmark v1.3.5/go.mod h1:mwnBkeHKe2W/ZEtQ+71ViKU8L12m81fl3OWwC1Zlc8k=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
-golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
+golang.org/x/mod v0.4.2 h1:Gz96sIWK3OalVv/I/qNygP42zyoKp3xptRVCWRFEBvo=
-golang.org/x/crypto v0.0.0-20200728195943-123391ffb6de h1:ikNHVSjEfnvz6sxdSPCaPt572qowuyMDMJLLm3Db3ig=
+golang.org/x/mod v0.4.2/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
-golang.org/x/crypto v0.0.0-20200728195943-123391ffb6de/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
-golang.org/x/crypto v0.0.0-20210322153248-0c34fe9e7dc2/go.mod h1:T9bdIzuCu7OtxOm1hfPfRQxPLYneinmdGuTeoZ9dtd4=
-golang.org/x/mod v0.1.1-0.20191105210325-c90efee705ee/go.mod h1:QqPTAvyqsEbceGzBzNggFXnrqF1CaUcvgkdR5Ot7KZg=
 golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
-golang.org/x/net v0.0.0-20190923162816-aa69164e4478/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/net v0.0.0-20210405180319-a5a99cb37ef4/go.mod h1:p54w0d4576C0XHj96bSt6lcn1PtDYWL6XObtHCRCNQM=
-golang.org/x/net v0.0.0-20200707034311-ab3426394381 h1:VXak5I6aEWmAXeQjA+QSZzlgNrpq9mjcfDemuexIKsU=
+golang.org/x/net v0.0.0-20210726213435-c6fcb2dbf985/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
-golang.org/x/net v0.0.0-20200707034311-ab3426394381/go.mod h1:/O7V0waA8r7cgGh81Ro3o1hOxt32SMVPicZroKQ2sZA=
+golang.org/x/net v0.0.0-20220812174116-3211cb980234 h1:RDqmgfe7SvlMWoqC3xwQ2blLO3fcWcxMa3eBLRdRW7E=
-golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
+golang.org/x/net v0.0.0-20220812174116-3211cb980234/go.mod h1:YDH+HFinaLZZlnHAfSS6ZXJJ9M9t4Dl22yv3iI2vPwk=
-golang.org/x/net v0.0.0-20210324205630-d1beb07c2056 h1:sANdAef76Ioam9aQUUdcAqricwY/WUaMc4+7LY4eGg8=
-golang.org/x/net v0.0.0-20210324205630-d1beb07c2056/go.mod h1:uSPa2vr4CLtc/ILN5odXGNXS6mhrKVzTaCXzk9m6W3k=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+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=
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