erge branch 'master' into routing_misses_performance_improvements

.github/stale.yml

@@ -1,17 +1,19 @@
 # Number of days of inactivity before an issue becomes stale
 daysUntilStale: 60
 # Number of days of inactivity before a stale issue is closed
-daysUntilClose: 7
+daysUntilClose: 30
 # Issues with these labels will never be considered stale
 exemptLabels:
   - pinned
   - security
+  - bug
+  - enhancement
 # Label to use when marking an issue as stale
-staleLabel: wontfix
+staleLabel: stale
 # Comment to post when marking an issue as stale. Set to `false` to disable
 markComment: >
   This issue has been automatically marked as stale because it has not had
-  recent activity. It will be closed if no further activity occurs. Thank you
-  for your contributions.
+  recent activity. It will be closed within a month if no further activity occurs.
+  Thank you for your contributions.
 # Comment to post when closing a stale issue. Set to `false` to disable
 closeComment: false

.github/workflows/echo.yml

@@ -9,6 +9,7 @@ on:
       - 'go.*'
       - '_fixture/**'
       - '.github/**'
+      - 'codecov.yml'
   pull_request:
     branches:
       - master
@@ -17,6 +18,7 @@ on:
       - 'go.*'
       - '_fixture/**'
       - '.github/**'
+      - 'codecov.yml'
 
 jobs:
   test:
@@ -62,3 +64,55 @@ jobs:
         with:
           token:
           fail_ci_if_error: false
+  benchmark:
+    needs: test
+    strategy:
+      matrix:
+        os: [ubuntu-latest]
+        go: [1.15]
+    name: Benchmark comparison ${{ matrix.os }} @ Go ${{ matrix.go }}
+    runs-on: ${{ matrix.os }}
+    steps:
+      - name: Set up Go ${{ matrix.go }}
+        uses: actions/setup-go@v1
+        with:
+          go-version: ${{ matrix.go }}
+
+      - name: Set GOPATH and PATH
+        run: |
+          echo "GOPATH=$(dirname $GITHUB_WORKSPACE)" >> $GITHUB_ENV
+          echo "$(dirname $GITHUB_WORKSPACE)/bin" >> $GITHUB_PATH
+        shell: bash
+
+      - name: Set build variables
+        run: |
+          echo "GOPROXY=https://proxy.golang.org" >> $GITHUB_ENV
+          echo "GO111MODULE=on" >> $GITHUB_ENV
+
+      - name: Checkout Code (Previous)
+        uses: actions/checkout@v2
+        with:
+          ref: ${{ github.base_ref }}
+          path: previous
+
+      - name: Checkout Code (New)
+        uses: actions/checkout@v2
+        with:
+          path: new
+
+      - name: Install Dependencies
+        run: go get -v golang.org/x/perf/cmd/benchstat
+
+      - name: Run Benchmark (Previous)
+        run: |
+          cd previous
+          go test -run="-" -bench=".*" -count=8 ./... > benchmark.txt
+
+      - name: Run Benchmark (New)
+        run: |
+          cd new
+          go test -run="-" -bench=".*" -count=8 ./... > benchmark.txt
+
+      - name: Run Benchstat
+        run: |
+          benchstat previous/benchmark.txt new/benchmark.txt

_fixture/_fixture/README.md

@@ -0,0 +1 @@
+This directory is used for the static middleware test

codecov.yml

@@ -0,0 +1,11 @@
+coverage:
+  status:
+    project:
+      default:
+        threshold: 1%
+    patch:
+      default:
+        threshold: 1%
+
+comment:
+  require_changes: true

echo.go

@@ -572,7 +572,7 @@ func (e *Echo) Reverse(name string, params ...interface{}) string {
 	for _, r := range e.router.routes {
 		if r.Name == name {
 			for i, l := 0, len(r.Path); i < l; i++ {
-				if r.Path[i] == ':' && n < ln {
+				if (r.Path[i] == ':' || r.Path[i] == '*') && n < ln {
 					for ; i < l && r.Path[i] != '/'; i++ {
 					}
 					uri.WriteString(fmt.Sprintf("%v", params[n]))

echo_test.go

@@ -277,10 +277,12 @@ func TestEchoURL(t *testing.T) {
 	e := New()
 	static := func(Context) error { return nil }
 	getUser := func(Context) error { return nil }
+	getAny := func(Context) error { return nil }
 	getFile := func(Context) error { return nil }
 
 	e.GET("/static/file", static)
 	e.GET("/users/:id", getUser)
+	e.GET("/documents/*", getAny)
 	g := e.Group("/group")
 	g.GET("/users/:uid/files/:fid", getFile)
 
@@ -289,6 +291,9 @@ func TestEchoURL(t *testing.T) {
 	assert.Equal("/static/file", e.URL(static))
 	assert.Equal("/users/:id", e.URL(getUser))
 	assert.Equal("/users/1", e.URL(getUser, "1"))
+	assert.Equal("/users/1", e.URL(getUser, "1"))
+	assert.Equal("/documents/foo.txt", e.URL(getAny, "foo.txt"))
+	assert.Equal("/documents/*", e.URL(getAny))
 	assert.Equal("/group/users/1/files/:fid", e.URL(getFile, "1"))
 	assert.Equal("/group/users/1/files/1", e.URL(getFile, "1", "1"))
 }
@@ -652,3 +657,28 @@ func TestEchoShutdown(t *testing.T) {
 	err := <-errCh
 	assert.Equal(t, err.Error(), "http: Server closed")
 }
+
+func TestEchoReverse(t *testing.T) {
+	assert := assert.New(t)
+
+	e := New()
+	dummyHandler := func(Context) error { return nil }
+
+	e.GET("/static", dummyHandler).Name = "/static"
+	e.GET("/static/*", dummyHandler).Name = "/static/*"
+	e.GET("/params/:foo", dummyHandler).Name = "/params/:foo"
+	e.GET("/params/:foo/bar/:qux", dummyHandler).Name = "/params/:foo/bar/:qux"
+	e.GET("/params/:foo/bar/:qux/*", dummyHandler).Name = "/params/:foo/bar/:qux/*"
+
+	assert.Equal("/static", e.Reverse("/static"))
+	assert.Equal("/static", e.Reverse("/static", "missing param"))
+	assert.Equal("/static/*", e.Reverse("/static/*"))
+	assert.Equal("/static/foo.txt", e.Reverse("/static/*", "foo.txt"))
+
+	assert.Equal("/params/:foo", e.Reverse("/params/:foo"))
+	assert.Equal("/params/one", e.Reverse("/params/:foo", "one"))
+	assert.Equal("/params/:foo/bar/:qux", e.Reverse("/params/:foo/bar/:qux"))
+	assert.Equal("/params/one/bar/:qux", e.Reverse("/params/:foo/bar/:qux", "one"))
+	assert.Equal("/params/one/bar/two", e.Reverse("/params/:foo/bar/:qux", "one", "two"))
+	assert.Equal("/params/one/bar/two/three", e.Reverse("/params/:foo/bar/:qux/*", "one", "two", "three"))
+}

middleware/compress.go

@@ -59,7 +59,7 @@ func GzipWithConfig(config GzipConfig) echo.MiddlewareFunc {
 		config.Level = DefaultGzipConfig.Level
 	}
 
-	pool := gzipPool(config)
+	pool := gzipCompressPool(config)
 
 	return func(next echo.HandlerFunc) echo.HandlerFunc {
 		return func(c echo.Context) error {
@@ -133,7 +133,7 @@ func (w *gzipResponseWriter) Push(target string, opts *http.PushOptions) error {
 	return http.ErrNotSupported
 }
 
-func gzipPool(config GzipConfig) sync.Pool {
+func gzipCompressPool(config GzipConfig) sync.Pool {
 	return sync.Pool{
 		New: func() interface{} {
 			w, err := gzip.NewWriterLevel(ioutil.Discard, config.Level)

middleware/cors.go

@@ -19,6 +19,13 @@ type (
 		// Optional. Default value []string{"*"}.
 		AllowOrigins []string `yaml:"allow_origins"`
 
+		// AllowOriginFunc is a custom function to validate the origin. It takes the
+		// origin as an argument and returns true if allowed or false otherwise. If
+		// an error is returned, it is returned by the handler. If this option is
+		// set, AllowOrigins is ignored.
+		// Optional.
+		AllowOriginFunc func(origin string) (bool, error) `yaml:"allow_origin_func"`
+
 		// AllowMethods defines a list methods allowed when accessing the resource.
 		// This is used in response to a preflight request.
 		// Optional. Default value DefaultCORSConfig.AllowMethods.
@@ -113,39 +120,49 @@ func CORSWithConfig(config CORSConfig) echo.MiddlewareFunc {
 				return c.NoContent(http.StatusNoContent)
 			}
 
-			// Check allowed origins
-			for _, o := range config.AllowOrigins {
-				if o == "*" && config.AllowCredentials {
+			if config.AllowOriginFunc != nil {
+				allowed, err := config.AllowOriginFunc(origin)
+				if err != nil {
+					return err
+				}
+				if allowed {
 					allowOrigin = origin
-					break
 				}
-				if o == "*" || o == origin {
-					allowOrigin = o
-					break
-				}
-				if matchSubdomain(origin, o) {
-					allowOrigin = origin
-					break
-				}
-			}
-
-			// Check allowed origin patterns
-			for _, re := range allowOriginPatterns {
-				if allowOrigin == "" {
-					didx := strings.Index(origin, "://")
-					if didx == -1 {
-						continue
-					}
-					domAuth := origin[didx+3:]
-					// to avoid regex cost by invalid long domain
-					if len(domAuth) > 253 {
-						break
-					}
-
-					if match, _ := regexp.MatchString(re, origin); match {
+			} else {
+				// Check allowed origins
+				for _, o := range config.AllowOrigins {
+					if o == "*" && config.AllowCredentials {
 						allowOrigin = origin
 						break
 					}
+					if o == "*" || o == origin {
+						allowOrigin = o
+						break
+					}
+					if matchSubdomain(origin, o) {
+						allowOrigin = origin
+						break
+					}
+				}
+
+				// Check allowed origin patterns
+				for _, re := range allowOriginPatterns {
+					if allowOrigin == "" {
+						didx := strings.Index(origin, "://")
+						if didx == -1 {
+							continue
+						}
+						domAuth := origin[didx+3:]
+						// to avoid regex cost by invalid long domain
+						if len(domAuth) > 253 {
+							break
+						}
+
+						if match, _ := regexp.MatchString(re, origin); match {
+							allowOrigin = origin
+							break
+						}
+					}
 				}
 			}
 

middleware/cors_test.go

@@ -1,6 +1,7 @@
 package middleware
 
 import (
+	"errors"
 	"net/http"
 	"net/http/httptest"
 	"testing"
@@ -360,3 +361,49 @@ func TestCorsHeaders(t *testing.T) {
 		}
 	}
 }
+
+func Test_allowOriginFunc(t *testing.T) {
+	returnTrue := func(origin string) (bool, error) {
+		return true, nil
+	}
+	returnFalse := func(origin string) (bool, error) {
+		return false, nil
+	}
+	returnError := func(origin string) (bool, error) {
+		return true, errors.New("this is a test error")
+	}
+
+	allowOriginFuncs := []func(origin string) (bool, error){
+		returnTrue,
+		returnFalse,
+		returnError,
+	}
+
+	const origin = "http://example.com"
+
+	e := echo.New()
+	for _, allowOriginFunc := range allowOriginFuncs {
+		req := httptest.NewRequest(http.MethodOptions, "/", nil)
+		rec := httptest.NewRecorder()
+		c := e.NewContext(req, rec)
+		req.Header.Set(echo.HeaderOrigin, origin)
+		cors := CORSWithConfig(CORSConfig{
+			AllowOriginFunc: allowOriginFunc,
+		})
+		h := cors(echo.NotFoundHandler)
+		err := h(c)
+
+		expected, expectedErr := allowOriginFunc(origin)
+		if expectedErr != nil {
+			assert.Equal(t, expectedErr, err)
+			assert.Equal(t, "", rec.Header().Get(echo.HeaderAccessControlAllowOrigin))
+			continue
+		}
+
+		if expected {
+			assert.Equal(t, origin, rec.Header().Get(echo.HeaderAccessControlAllowOrigin))
+		} else {
+			assert.Equal(t, "", rec.Header().Get(echo.HeaderAccessControlAllowOrigin))
+		}
+	}
+}

middleware/decompress.go

@@ -3,9 +3,12 @@ package middleware
 import (
 	"bytes"
 	"compress/gzip"
-	"github.com/labstack/echo/v4"
 	"io"
 	"io/ioutil"
+	"net/http"
+	"sync"
+
+	"github.com/labstack/echo/v4"
 )
 
 type (
@@ -13,17 +16,55 @@ type (
 	DecompressConfig struct {
 		// Skipper defines a function to skip middleware.
 		Skipper Skipper
+
+		// GzipDecompressPool defines an interface to provide the sync.Pool used to create/store Gzip readers
+		GzipDecompressPool Decompressor
 	}
 )
 
 //GZIPEncoding content-encoding header if set to "gzip", decompress body contents.
 const GZIPEncoding string = "gzip"
 
+// Decompressor is used to get the sync.Pool used by the middleware to get Gzip readers
+type Decompressor interface {
+	gzipDecompressPool() sync.Pool
+}
+
 var (
 	//DefaultDecompressConfig defines the config for decompress middleware
-	DefaultDecompressConfig = DecompressConfig{Skipper: DefaultSkipper}
+	DefaultDecompressConfig = DecompressConfig{
+		Skipper:            DefaultSkipper,
+		GzipDecompressPool: &DefaultGzipDecompressPool{},
+	}
 )
 
+// DefaultGzipDecompressPool is the default implementation of Decompressor interface
+type DefaultGzipDecompressPool struct {
+}
+
+func (d *DefaultGzipDecompressPool) gzipDecompressPool() sync.Pool {
+	return sync.Pool{
+		New: func() interface{} {
+			// create with an empty reader (but with GZIP header)
+			w, err := gzip.NewWriterLevel(ioutil.Discard, gzip.BestSpeed)
+			if err != nil {
+				return err
+			}
+
+			b := new(bytes.Buffer)
+			w.Reset(b)
+			w.Flush()
+			w.Close()
+
+			r, err := gzip.NewReader(bytes.NewReader(b.Bytes()))
+			if err != nil {
+				return err
+			}
+			return r
+		},
+	}
+}
+
 //Decompress decompresses request body based if content encoding type is set to "gzip" with default config
 func Decompress() echo.MiddlewareFunc {
 	return DecompressWithConfig(DefaultDecompressConfig)
@@ -31,25 +72,46 @@ func Decompress() echo.MiddlewareFunc {
 
 //DecompressWithConfig decompresses request body based if content encoding type is set to "gzip" with config
 func DecompressWithConfig(config DecompressConfig) echo.MiddlewareFunc {
+	// Defaults
+	if config.Skipper == nil {
+		config.Skipper = DefaultGzipConfig.Skipper
+	}
+	if config.GzipDecompressPool == nil {
+		config.GzipDecompressPool = DefaultDecompressConfig.GzipDecompressPool
+	}
+
 	return func(next echo.HandlerFunc) echo.HandlerFunc {
+		pool := config.GzipDecompressPool.gzipDecompressPool()
 		return func(c echo.Context) error {
 			if config.Skipper(c) {
 				return next(c)
 			}
 			switch c.Request().Header.Get(echo.HeaderContentEncoding) {
 			case GZIPEncoding:
-				gr, err := gzip.NewReader(c.Request().Body)
-				if err != nil {
+				b := c.Request().Body
+
+				i := pool.Get()
+				gr, ok := i.(*gzip.Reader)
+				if !ok {
+					return echo.NewHTTPError(http.StatusInternalServerError, i.(error).Error())
+				}
+
+				if err := gr.Reset(b); err != nil {
+					pool.Put(gr)
 					if err == io.EOF { //ignore if body is empty
 						return next(c)
 					}
 					return err
 				}
-				defer gr.Close()
 				var buf bytes.Buffer
 				io.Copy(&buf, gr)
+
+				gr.Close()
+				pool.Put(gr)
+
+				b.Close() // http.Request.Body is closed by the Server, but because we are replacing it, it must be closed here
+
 				r := ioutil.NopCloser(&buf)
-				defer r.Close()
 				c.Request().Body = r
 			}
 			return next(c)

middleware/decompress_test.go

@@ -3,10 +3,12 @@ package middleware
 import (
 	"bytes"
 	"compress/gzip"
+	"errors"
 	"io/ioutil"
 	"net/http"
 	"net/http/httptest"
 	"strings"
+	"sync"
 	"testing"
 
 	"github.com/labstack/echo/v4"
@@ -43,6 +45,35 @@ func TestDecompress(t *testing.T) {
 	assert.Equal(body, string(b))
 }
 
+func TestDecompressDefaultConfig(t *testing.T) {
+	e := echo.New()
+	req := httptest.NewRequest(http.MethodPost, "/", strings.NewReader("test"))
+	rec := httptest.NewRecorder()
+	c := e.NewContext(req, rec)
+
+	h := DecompressWithConfig(DecompressConfig{})(func(c echo.Context) error {
+		c.Response().Write([]byte("test")) // For Content-Type sniffing
+		return nil
+	})
+	h(c)
+
+	assert := assert.New(t)
+	assert.Equal("test", rec.Body.String())
+
+	// Decompress
+	body := `{"name": "echo"}`
+	gz, _ := gzipString(body)
+	req = httptest.NewRequest(http.MethodPost, "/", strings.NewReader(string(gz)))
+	req.Header.Set(echo.HeaderContentEncoding, GZIPEncoding)
+	rec = httptest.NewRecorder()
+	c = e.NewContext(req, rec)
+	h(c)
+	assert.Equal(GZIPEncoding, req.Header.Get(echo.HeaderContentEncoding))
+	b, err := ioutil.ReadAll(req.Body)
+	assert.NoError(err)
+	assert.Equal(body, string(b))
+}
+
 func TestCompressRequestWithoutDecompressMiddleware(t *testing.T) {
 	e := echo.New()
 	body := `{"name":"echo"}`
@@ -108,6 +139,36 @@ func TestDecompressSkipper(t *testing.T) {
 	assert.Equal(t, body, string(reqBody))
 }
 
+type TestDecompressPoolWithError struct {
+}
+
+func (d *TestDecompressPoolWithError) gzipDecompressPool() sync.Pool {
+	return sync.Pool{
+		New: func() interface{} {
+			return errors.New("pool error")
+		},
+	}
+}
+
+func TestDecompressPoolError(t *testing.T) {
+	e := echo.New()
+	e.Use(DecompressWithConfig(DecompressConfig{
+		Skipper:            DefaultSkipper,
+		GzipDecompressPool: &TestDecompressPoolWithError{},
+	}))
+	body := `{"name": "echo"}`
+	req := httptest.NewRequest(http.MethodPost, "/echo", strings.NewReader(body))
+	req.Header.Set(echo.HeaderContentEncoding, GZIPEncoding)
+	rec := httptest.NewRecorder()
+	c := e.NewContext(req, rec)
+	e.ServeHTTP(rec, req)
+	assert.Equal(t, GZIPEncoding, req.Header.Get(echo.HeaderContentEncoding))
+	reqBody, err := ioutil.ReadAll(c.Request().Body)
+	assert.NoError(t, err)
+	assert.Equal(t, body, string(reqBody))
+	assert.Equal(t, rec.Code, http.StatusInternalServerError)
+}
+
 func BenchmarkDecompress(b *testing.B) {
 	e := echo.New()
 	body := `{"name": "echo"}`

middleware/jwt.go

@@ -57,6 +57,7 @@ type (
 		// - "query:<name>"
 		// - "param:<name>"
 		// - "cookie:<name>"
+		// - "form:<name>"
 		TokenLookup string
 
 		// AuthScheme to be used in the Authorization header.
@@ -167,6 +168,8 @@ func JWTWithConfig(config JWTConfig) echo.MiddlewareFunc {
 		extractor = jwtFromParam(parts[1])
 	case "cookie":
 		extractor = jwtFromCookie(parts[1])
+	case "form":
+		extractor = jwtFromForm(parts[1])
 	}
 
 	return func(next echo.HandlerFunc) echo.HandlerFunc {
@@ -266,3 +269,14 @@ func jwtFromCookie(name string) jwtExtractor {
 		return cookie.Value, nil
 	}
 }
+
+// jwtFromForm returns a `jwtExtractor` that extracts token from the form field.
+func jwtFromForm(name string) jwtExtractor {
+	return func(c echo.Context) (string, error) {
+		field := c.FormValue(name)
+		if field == "" {
+			return "", ErrJWTMissing
+		}
+		return field, nil
+	}
+}

middleware/jwt_test.go

@@ -3,6 +3,8 @@ package middleware
 import (
 	"net/http"
 	"net/http/httptest"
+	"net/url"
+	"strings"
 	"testing"
 
 	"github.com/dgrijalva/jwt-go"
@@ -75,6 +77,7 @@ func TestJWT(t *testing.T) {
 		reqURL     string // "/" if empty
 		hdrAuth    string
 		hdrCookie  string // test.Request doesn't provide SetCookie(); use name=val
+		formValues map[string]string
 		info       string
 	}{
 		{
@@ -192,12 +195,48 @@ func TestJWT(t *testing.T) {
 			expErrCode: http.StatusBadRequest,
 			info:       "Empty cookie",
 		},
+		{
+			config: JWTConfig{
+				SigningKey:  validKey,
+				TokenLookup: "form:jwt",
+			},
+			formValues: map[string]string{"jwt": token},
+			info:       "Valid form method",
+		},
+		{
+			config: JWTConfig{
+				SigningKey:  validKey,
+				TokenLookup: "form:jwt",
+			},
+			expErrCode: http.StatusUnauthorized,
+			formValues: map[string]string{"jwt": "invalid"},
+			info:       "Invalid token with form method",
+		},
+		{
+			config: JWTConfig{
+				SigningKey:  validKey,
+				TokenLookup: "form:jwt",
+			},
+			expErrCode: http.StatusBadRequest,
+			info:       "Empty form field",
+		},
 	} {
 		if tc.reqURL == "" {
 			tc.reqURL = "/"
 		}
 
-		req := httptest.NewRequest(http.MethodGet, tc.reqURL, nil)
+		var req *http.Request
+		if len(tc.formValues) > 0 {
+			form := url.Values{}
+			for k, v := range tc.formValues {
+				form.Set(k, v)
+			}
+			req = httptest.NewRequest(http.MethodPost, tc.reqURL, strings.NewReader(form.Encode()))
+			req.Header.Set(echo.HeaderContentType, "application/x-www-form-urlencoded")
+			req.ParseForm()
+		} else {
+			req = httptest.NewRequest(http.MethodGet, tc.reqURL, nil)
+		}
 		res := httptest.NewRecorder()
 		req.Header.Set(echo.HeaderAuthorization, tc.hdrAuth)
 		req.Header.Set(echo.HeaderCookie, tc.hdrCookie)

middleware/static.go

@@ -36,6 +36,12 @@ type (
 		// Enable directory browsing.
 		// Optional. Default value false.
 		Browse bool `yaml:"browse"`
+
+		// Enable ignoring of the base of the URL path.
+		// Example: when assigning a static middleware to a non root path group,
+		// the filesystem path is not doubled
+		// Optional. Default value false.
+		IgnoreBase bool `yaml:"ignoreBase"`
 	}
 )
 
@@ -163,6 +169,15 @@ func StaticWithConfig(config StaticConfig) echo.MiddlewareFunc {
 			}
 			name := filepath.Join(config.Root, path.Clean("/"+p)) // "/"+ for security
 
+			if config.IgnoreBase {
+				routePath := path.Base(strings.TrimRight(c.Path(), "/*"))
+				baseURLPath := path.Base(p)
+				if baseURLPath == routePath {
+					i := strings.LastIndex(name, routePath)
+					name = name[:i] + strings.Replace(name[i:], routePath, "", 1)
+				}
+			}
+
 			fi, err := os.Stat(name)
 			if err != nil {
 				if os.IsNotExist(err) {

middleware/static_test.go

@@ -3,6 +3,7 @@ package middleware
 import (
 	"net/http"
 	"net/http/httptest"
+	"path/filepath"
 	"testing"
 
 	"github.com/labstack/echo/v4"
@@ -67,4 +68,27 @@ func TestStatic(t *testing.T) {
 		assert.Equal(http.StatusOK, rec.Code)
 		assert.Contains(rec.Body.String(), "cert.pem")
 	}
+
+	// IgnoreBase
+	req = httptest.NewRequest(http.MethodGet, "/_fixture", nil)
+	rec = httptest.NewRecorder()
+	config.Root = "../_fixture"
+	config.IgnoreBase = true
+	static = StaticWithConfig(config)
+	c.Echo().Group("_fixture", static)
+	e.ServeHTTP(rec, req)
+
+	assert.Equal(http.StatusOK, rec.Code)
+	assert.Equal(rec.Header().Get(echo.HeaderContentLength), "122")
+
+	req = httptest.NewRequest(http.MethodGet, "/_fixture", nil)
+	rec = httptest.NewRecorder()
+	config.Root = "../_fixture"
+	config.IgnoreBase = false
+	static = StaticWithConfig(config)
+	c.Echo().Group("_fixture", static)
+	e.ServeHTTP(rec, req)
+
+	assert.Equal(http.StatusOK, rec.Code)
+	assert.Contains(rec.Body.String(), filepath.Join("..", "_fixture", "_fixture"))
 }

response.go

@@ -56,11 +56,11 @@ func (r *Response) WriteHeader(code int) {
 		r.echo.Logger.Warn("response already committed")
 		return
 	}
+	r.Status = code
 	for _, fn := range r.beforeFuncs {
 		fn()
 	}
-	r.Status = code
-	r.Writer.WriteHeader(code)
+	r.Writer.WriteHeader(r.Status)
 	r.Committed = true
 }
 

response_test.go

@@ -56,3 +56,19 @@ func TestResponse_Flush(t *testing.T) {
 	res.Flush()
 	assert.True(t, rec.Flushed)
 }
+
+func TestResponse_ChangeStatusCodeBeforeWrite(t *testing.T) {
+	e := New()
+	rec := httptest.NewRecorder()
+	res := &Response{echo: e, Writer: rec}
+
+	res.Before(func() {
+		if 200 < res.Status && res.Status < 300 {
+			res.Status = 200
+		}
+	})
+
+	res.WriteHeader(209)
+
+	assert.Equal(t, http.StatusOK, rec.Code)
+}

router.go

@@ -449,7 +449,9 @@ func (r *Router) Find(method, path string, c Context) {
 				pos := strings.IndexByte(ns, '/')
 				if pos == -1 {
 					// If no slash is remaining in search string set param value
-					pvalues[len(cn.pnames)-1] = search
+					if len(cn.pnames) > 0 {
+						pvalues[len(cn.pnames)-1] = search
+					}
 					break
 				} else if pos > 0 {
 					// Otherwise continue route processing with restored next node

router_test.go

@@ -1430,6 +1430,40 @@ func TestRouterParam1466(t *testing.T) {
 	assert.Equal(t, 0, c.response.Status)
 }
 
+// Issue #1653
+func TestRouterPanicWhenParamNoRootOnlyChildsFailsFind(t *testing.T) {
+	e := New()
+	r := e.router
+
+	r.Add(http.MethodGet, "/users/create", handlerHelper("create", 1))
+	r.Add(http.MethodGet, "/users/:id/edit", func(c Context) error {
+		return nil
+	})
+	r.Add(http.MethodGet, "/users/:id/active", func(c Context) error {
+		return nil
+	})
+
+	c := e.NewContext(nil, nil).(*context)
+	r.Find(http.MethodGet, "/users/alice/edit", c)
+	assert.Equal(t, "alice", c.Param("id"))
+
+	c = e.NewContext(nil, nil).(*context)
+	r.Find(http.MethodGet, "/users/bob/active", c)
+	assert.Equal(t, "bob", c.Param("id"))
+
+	c = e.NewContext(nil, nil).(*context)
+	r.Find(http.MethodGet, "/users/create", c)
+	c.Handler()(c)
+	assert.Equal(t, 1, c.Get("create"))
+	assert.Equal(t, "/users/create", c.Get("path"))
+
+	//This panic before the fix for Issue #1653
+	c = e.NewContext(nil, nil).(*context)
+	r.Find(http.MethodGet, "/users/createNotFound", c)
+	he := c.Handler()(c).(*HTTPError)
+	assert.Equal(t, http.StatusNotFound, he.Code)
+}
+
 func benchmarkRouterRoutes(b *testing.B, routes []*Route, routesToFind []*Route) {
 	e := New()
 	r := e.router