add test cases for HTTP/HTTP2 probing resistance

.testdata/probe_resist.txt

@@ -0,0 +1 @@
+Hello World!

bypass_test.go

@@ -211,6 +211,22 @@ var bypassReloadTests = []struct {
 		bypassed: true,
 		stopped:  false,
 	},
+	{
+		r:        bytes.NewBufferString("#reverse true\n#reload 10s\n192.168.0.0/16"),
+		reversed: false,
+		period:   0,
+		addr:     "192.168.10.2",
+		bypassed: true,
+		stopped:  true,
+	},
+	{
+		r:        bytes.NewBufferString("#reverse true\n#reload 10s\n192.168.1.0/24"),
+		reversed: false,
+		period:   0,
+		addr:     "192.168.10.2",
+		bypassed: false,
+		stopped:  true,
+	},
 	{
 		r:        bytes.NewBufferString("reverse false\nreload 10s\n192.168.1.1\n#example.com"),
 		reversed: false,
@@ -227,6 +243,30 @@ var bypassReloadTests = []struct {
 		bypassed: true,
 		stopped:  true,
 	},
+	{
+		r:        bytes.NewBufferString("#reverse true\n#reload 10s\nexample.com"),
+		reversed: false,
+		period:   0,
+		addr:     "example.com",
+		bypassed: true,
+		stopped:  true,
+	},
+	{
+		r:        bytes.NewBufferString("#reverse true\n#reload 10s\n.example.com"),
+		reversed: false,
+		period:   0,
+		addr:     "example.com",
+		bypassed: true,
+		stopped:  true,
+	},
+	{
+		r:        bytes.NewBufferString("#reverse true\n#reload 10s\n*.example.com"),
+		reversed: false,
+		period:   0,
+		addr:     "example.com",
+		bypassed: false,
+		stopped:  true,
+	},
 }
 
 func TestByapssReload(t *testing.T) {
@@ -235,6 +275,8 @@ func TestByapssReload(t *testing.T) {
 		if err := bp.Reload(tc.r); err != nil {
 			t.Error(err)
 		}
+		t.Log(bp.String())
+
 		if bp.Reversed() != tc.reversed {
 			t.Errorf("#%d test failed: reversed value should be %v, got %v",
 				i, tc.reversed, bp.reversed)
@@ -251,6 +293,7 @@ func TestByapssReload(t *testing.T) {
 			if bp.Period() >= 0 {
 				t.Errorf("period of the stopped reloader should be minus value")
 			}
+			bp.Stop()
 		}
 		if bp.Stopped() != tc.stopped {
 			t.Errorf("#%d test failed: stopped value should be %v, got %v",

common_test.go

@@ -16,8 +16,8 @@ import (
 )
 
 func init() {
-	// SetLogger(&LogLogger{})
+	SetLogger(&NopLogger{})
-	// Debug = true
+	Debug = true
 	DialTimeout = 1000 * time.Millisecond
 	HandshakeTimeout = 1000 * time.Millisecond
 	ConnectTimeout = 1000 * time.Millisecond
@@ -33,7 +33,11 @@ func init() {
 
 var (
 	httpTestHandler = http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-		io.Copy(w, r.Body)
+		data, _ := ioutil.ReadAll(r.Body)
+		if len(data) == 0 {
+			data = []byte("Hello World!")
+		}
+		io.Copy(w, bytes.NewReader(data))
 	})
 
 	udpTestHandler = udpHandlerFunc(func(w io.Writer, r *udpRequest) {

http2_test.go

@@ -1,9 +1,12 @@
 package gost
 
 import (
+	"bytes"
 	"crypto/rand"
 	"crypto/tls"
 	"fmt"
+	"io/ioutil"
+	"net/http"
 	"net/http/httptest"
 	"net/url"
 	"testing"
@@ -920,3 +923,184 @@ func TestH2CForwardTunnel(t *testing.T) {
 		t.Error(err)
 	}
 }
+
+func TestHTTP2ProxyWithCodeProbeResist(t *testing.T) {
+	httpSrv := httptest.NewServer(httpTestHandler)
+	defer httpSrv.Close()
+
+	ln, err := HTTP2Listener("", nil)
+	if err != nil {
+		t.Error(err)
+	}
+
+	client := &Client{
+		Connector:   HTTP2Connector(nil),
+		Transporter: HTTP2Transporter(nil),
+	}
+
+	server := &Server{
+		Listener: ln,
+		Handler: HTTP2Handler(
+			UsersHandlerOption(url.UserPassword("admin", "123456")),
+			ProbeResistHandlerOption("code:400"),
+		),
+	}
+	go server.Run()
+	defer server.Close()
+
+	err = proxyRoundtrip(client, server, httpSrv.URL, nil)
+	if err == nil {
+		t.Error("should failed with status code 400")
+	} else if err.Error() != "400 Bad Request" {
+		t.Error("should failed with status code 400, got", err.Error())
+	}
+}
+
+func TestHTTP2ProxyWithWebProbeResist(t *testing.T) {
+	httpSrv := httptest.NewServer(httpTestHandler)
+	defer httpSrv.Close()
+
+	ln, err := HTTP2Listener("", nil)
+	if err != nil {
+		t.Error(err)
+	}
+
+	client := &Client{
+		Connector:   HTTP2Connector(nil),
+		Transporter: HTTP2Transporter(nil),
+	}
+
+	server := &Server{
+		Listener: ln,
+		Handler: HTTP2Handler(
+			UsersHandlerOption(url.UserPassword("admin", "123456")),
+			ProbeResistHandlerOption("web:"+httpSrv.URL),
+		),
+	}
+	go server.Run()
+	defer server.Close()
+
+	conn, err := proxyConn(client, server)
+	if err != nil {
+		t.Error(err)
+	}
+	defer conn.Close()
+
+	conn, err = client.Connect(conn, "github.com:443")
+	if err != nil {
+		t.Error(err)
+	}
+	recv, _ := ioutil.ReadAll(conn)
+	if !bytes.Equal(recv, []byte("Hello World!")) {
+		t.Error("data not equal")
+	}
+}
+
+func TestHTTP2ProxyWithHostProbeResist(t *testing.T) {
+	httpSrv := httptest.NewServer(httpTestHandler)
+	defer httpSrv.Close()
+
+	sendData := make([]byte, 128)
+	rand.Read(sendData)
+
+	ln, err := HTTP2Listener("", nil)
+	if err != nil {
+		t.Error(err)
+	}
+
+	client := &Client{
+		Connector:   HTTP2Connector(nil),
+		Transporter: HTTP2Transporter(nil),
+	}
+
+	u, err := url.Parse(httpSrv.URL)
+	if err != nil {
+		t.Error(err)
+	}
+
+	server := &Server{
+		Listener: ln,
+		Handler: HTTP2Handler(
+			UsersHandlerOption(url.UserPassword("admin", "123456")),
+			ProbeResistHandlerOption("host:"+u.Host),
+		),
+	}
+	go server.Run()
+	defer server.Close()
+
+	conn, err := proxyConn(client, server)
+	if err != nil {
+		t.Error(err)
+	}
+	defer conn.Close()
+
+	cc, ok := conn.(*http2ClientConn)
+	if !ok {
+		t.Error("wrong connection type")
+	}
+
+	req := &http.Request{
+		Method:        http.MethodConnect,
+		URL:           &url.URL{Scheme: "https", Host: ln.Addr().String()},
+		Header:        make(http.Header),
+		Proto:         "HTTP/2.0",
+		ProtoMajor:    2,
+		ProtoMinor:    0,
+		Body:          ioutil.NopCloser(bytes.NewReader(sendData)),
+		Host:          cc.addr,
+		ContentLength: -1,
+	}
+	req.Header.Set("Gost-Target", "github.com:443")
+
+	resp, err := cc.client.Do(req)
+	if err != nil {
+		t.Error(err)
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		t.Error("got non-200 status:", resp.Status)
+	}
+
+	recv, _ := ioutil.ReadAll(resp.Body)
+	if !bytes.Equal(sendData, recv) {
+		t.Error("data not equal")
+	}
+}
+
+func TestHTTP2ProxyWithFileProbeResist(t *testing.T) {
+	ln, err := HTTP2Listener("", nil)
+	if err != nil {
+		t.Error(err)
+	}
+
+	client := &Client{
+		Connector:   HTTP2Connector(nil),
+		Transporter: HTTP2Transporter(nil),
+	}
+
+	server := &Server{
+		Listener: ln,
+		Handler: HTTP2Handler(
+			UsersHandlerOption(url.UserPassword("admin", "123456")),
+			ProbeResistHandlerOption("file:.testdata/probe_resist.txt"),
+		),
+	}
+	go server.Run()
+	defer server.Close()
+
+	conn, err := proxyConn(client, server)
+	if err != nil {
+		t.Error(err)
+	}
+	defer conn.Close()
+
+	conn, err = client.Connect(conn, "github.com:443")
+	if err != nil {
+		t.Error(err)
+	}
+	recv, _ := ioutil.ReadAll(conn)
+	if !bytes.Equal(recv, []byte("Hello World!")) {
+		t.Error("data not equal")
+	}
+}

http_test.go

@@ -1,7 +1,11 @@
 package gost
 
 import (
+	"bytes"
 	"crypto/rand"
+	"fmt"
+	"io/ioutil"
+	"net/http"
 	"net/http/httptest"
 	"net/url"
 	"testing"
@@ -59,6 +63,8 @@ func TestHTTPProxy(t *testing.T) {
 	rand.Read(sendData)
 
 	for i, tc := range httpProxyTests {
+		tc := tc
+		t.Run(fmt.Sprintf("#%d", i), func(t *testing.T) {
 			err := httpProxyRoundtrip(httpSrv.URL, sendData, tc.cliUser, tc.srvUsers)
 			if err == nil {
 				if tc.errStr != "" {
@@ -72,6 +78,7 @@ func TestHTTPProxy(t *testing.T) {
 					t.Errorf("#%d got error %v, want %v", i, err, tc.errStr)
 				}
 			}
+		})
 	}
 }
 
@@ -142,3 +149,152 @@ func BenchmarkHTTPProxyParallel(b *testing.B) {
 		}
 	})
 }
+
+func TestHTTPProxyWithCodeProbeResist(t *testing.T) {
+	ln, err := TCPListener("")
+	if err != nil {
+		t.Error(err)
+	}
+
+	server := &Server{
+		Listener: ln,
+		Handler: HTTPHandler(
+			UsersHandlerOption(url.UserPassword("admin", "123456")),
+			ProbeResistHandlerOption("code:400"),
+		),
+	}
+	go server.Run()
+	defer server.Close()
+
+	resp, err := http.Get("http://" + ln.Addr().String())
+	if err != nil {
+		t.Error(err)
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != 400 {
+		t.Error("should failed with status code 400, got", resp.Status)
+	}
+}
+
+func TestHTTPProxyWithWebProbeResist(t *testing.T) {
+	httpSrv := httptest.NewServer(httpTestHandler)
+	defer httpSrv.Close()
+
+	ln, err := TCPListener("")
+	if err != nil {
+		t.Error(err)
+	}
+
+	server := &Server{
+		Listener: ln,
+		Handler: HTTPHandler(
+			UsersHandlerOption(url.UserPassword("admin", "123456")),
+			ProbeResistHandlerOption("web:"+httpSrv.URL),
+		),
+	}
+	go server.Run()
+	defer server.Close()
+
+	r, err := http.NewRequest("GET", "http://"+ln.Addr().String(), nil)
+	if err != nil {
+		t.Error(err)
+	}
+	resp, err := http.DefaultClient.Do(r)
+	if err != nil {
+		t.Error(err)
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != 200 {
+		t.Error("got status:", resp.Status)
+	}
+
+	recv, _ := ioutil.ReadAll(resp.Body)
+	if !bytes.Equal(recv, []byte("Hello World!")) {
+		t.Error("data not equal")
+	}
+}
+
+func TestHTTPProxyWithHostProbeResist(t *testing.T) {
+	httpSrv := httptest.NewServer(httpTestHandler)
+	defer httpSrv.Close()
+
+	sendData := make([]byte, 128)
+	rand.Read(sendData)
+
+	ln, err := TCPListener("")
+	if err != nil {
+		t.Error(err)
+	}
+
+	u, err := url.Parse(httpSrv.URL)
+	if err != nil {
+		t.Error(err)
+	}
+
+	server := &Server{
+		Listener: ln,
+		Handler: HTTPHandler(
+			UsersHandlerOption(url.UserPassword("admin", "123456")),
+			ProbeResistHandlerOption("host:"+u.Host),
+		),
+	}
+	go server.Run()
+	defer server.Close()
+
+	r, err := http.NewRequest("GET", "http://"+ln.Addr().String(), bytes.NewReader(sendData))
+	if err != nil {
+		t.Error(err)
+	}
+	resp, err := http.DefaultClient.Do(r)
+	if err != nil {
+		t.Error(err)
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != 200 {
+		t.Error("got status:", resp.Status)
+	}
+
+	recv, _ := ioutil.ReadAll(resp.Body)
+	if !bytes.Equal(sendData, recv) {
+		t.Error("data not equal")
+	}
+}
+
+func TestHTTPProxyWithFileProbeResist(t *testing.T) {
+	ln, err := TCPListener("")
+	if err != nil {
+		t.Error(err)
+	}
+
+	server := &Server{
+		Listener: ln,
+		Handler: HTTPHandler(
+			UsersHandlerOption(url.UserPassword("admin", "123456")),
+			ProbeResistHandlerOption("file:.testdata/probe_resist.txt"),
+		),
+	}
+	go server.Run()
+	defer server.Close()
+
+	r, err := http.NewRequest("GET", "http://"+ln.Addr().String(), nil)
+	if err != nil {
+		t.Error(err)
+	}
+	resp, err := http.DefaultClient.Do(r)
+	if err != nil {
+		t.Error(err)
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != 200 {
+		t.Error("got status:", resp.Status)
+	}
+
+	recv, _ := ioutil.ReadAll(resp.Body)
+	if !bytes.Equal(recv, []byte("Hello World!")) {
+		t.Error("data not equal, got:", string(recv))
+	}
+}

snapcraft.yaml

@@ -1,5 +1,5 @@
 name: gost
-version: '2.6'
+version: '2.7'
 summary: GO Simple Tunnel
 description: |
   A simple tunnel written in golang
@@ -14,7 +14,7 @@ apps:
 
 parts:
   go:
-    source-tag: go1.10
+    source-tag: go1.11
   gost:
     after: [go]
     source: .