hotfix (#186)

## Pull Request template
Please, go through these steps before clicking submit on this PR.

1. Give a descriptive title to your PR.
2. Provide a description of your changes.
3. Make sure you have some relevant tests.
4. Put `closes #XXXX` in your comment to auto-close the issue that your PR fixes (if applicable).

**PLEASE REMOVE THIS TEMPLATE BEFORE SUBMITTING**

Co-authored-by: Gorbunov Kirill Andreevich <kgorbunov@mtsbank.ru>
Reviewed-on: #186
Co-authored-by: Кирилл Горбунов <kirya_gorbunov_2015@mail.ru>
Co-committed-by: Кирилл Горбунов <kirya_gorbunov_2015@mail.ru>

handler.go

@@ -109,20 +109,20 @@ func (h *Server) HTTPHandlerFunc(handler interface{}) (http.HandlerFunc, error)
 			md = metadata.New(len(r.Header) + 8)
 		}
 		for k, v := range r.Header {
-			md[k] = v
+			md[k] = v[0]
 		}
-		md["RemoteAddr"] = []string{r.RemoteAddr}
-		md["Method"] = []string{r.Method}
-		md["URL"] = []string{r.URL.String()}
-		md["Proto"] = []string{r.Proto}
-		md["Content-Length"] = []string{fmt.Sprintf("%d", r.ContentLength)}
-		md["Transfer-Encoding"] = r.TransferEncoding
-		md["Host"] = []string{r.Host}
-		md["RequestURI"] = []string{r.RequestURI}
+		md["RemoteAddr"] = r.RemoteAddr
+		md["Method"] = r.Method
+		md["URL"] = r.URL.String()
+		md["Proto"] = r.Proto
+		md["Content-Length"] = fmt.Sprintf("%d", r.ContentLength)
+		md["Transfer-Encoding"] = r.TransferEncoding[0]
+		md["Host"] = r.Host
+		md["RequestURI"] = r.RequestURI
 		if r.TLS != nil {
-			md["TLS"] = []string{"true"}
-			md["TLS-ALPN"] = []string{r.TLS.NegotiatedProtocol}
-			md["TLS-ServerName"] = []string{r.TLS.ServerName}
+			md["TLS"] = "true"
+			md["TLS-ALPN"] = r.TLS.NegotiatedProtocol
+			md["TLS-ServerName"] = r.TLS.ServerName
 		}
 
 		ctx = metadata.NewIncomingContext(ctx, md)
@@ -290,7 +290,7 @@ func (h *Server) HTTPHandlerFunc(handler interface{}) (http.HandlerFunc, error)
 		w.Header().Set(metadata.HeaderContentType, ct)
 		if md, ok := metadata.FromOutgoingContext(ctx); ok {
 			for k, v := range md {
-				w.Header()[k] = v
+				w.Header()[k] = []string{v}
 			}
 		}
 		if md := getRspHeader(ctx); md != nil {
@@ -349,23 +349,23 @@ func (h *Server) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 		md = metadata.New(len(r.Header) + 8)
 	}
 	for k, v := range r.Header {
-		md[k] = v
+		md[k] = v[0]
 	}
-	md["RemoteAddr"] = []string{r.RemoteAddr}
+	md["RemoteAddr"] = r.RemoteAddr
 	if r.TLS != nil {
-		md["Scheme"] = []string{"https"}
+		md["Scheme"] = "https"
 	} else {
-		md["Scheme"] = []string{"http"}
+		md["Scheme"] = "http"
 	}
-	md["Method"] = []string{r.Method}
-	md["URL"] = []string{r.URL.String()}
-	md["Proto"] = []string{r.Proto}
-	md["Content-Length"] = []string{fmt.Sprintf("%d", r.ContentLength)}
+	md["Method"] = r.Method
+	md["URL"] = r.URL.String()
+	md["Proto"] = r.Proto
+	md["Content-Length"] = fmt.Sprintf("%d", r.ContentLength)
 	if len(r.TransferEncoding) > 0 {
-		md["Transfer-Encoding"] = r.TransferEncoding
+		md["Transfer-Encoding"] = r.TransferEncoding[0]
 	}
-	md["Host"] = []string{r.Host}
-	md["RequestURI"] = []string{r.RequestURI}
+	md["Host"] = r.Host
+	md["RequestURI"] = r.RequestURI
 	ctx = metadata.NewIncomingContext(ctx, md)
 
 	path := r.URL.Path
@@ -550,7 +550,7 @@ func (h *Server) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	w.Header().Set(metadata.HeaderContentType, ct)
 	if md, ok := metadata.FromOutgoingContext(ctx); ok {
 		for k, v := range md {
-			w.Header()[k] = v
+			w.Header()[k] = []string{v}
 		}
 	}
 	if md := getRspHeader(ctx); md != nil {

handler/meter/meter.go

@@ -45,6 +45,7 @@ type Options struct {
 	Meter           meter.Meter
 	Name            string
 	MeterOptions    []options.Option
+	DisableCompress bool
 }
 
 func Meter(m meter.Meter) Option {
@@ -59,6 +60,12 @@ func Name(name string) Option {
 	}
 }
 
+func DisableCompress(g bool) Option {
+	return func(o *Options) {
+		o.DisableCompress = g
+	}
+}
+
 func MeterOptions(opts ...options.Option) Option {
 	return func(o *Options) {
 		o.MeterOptions = append(o.MeterOptions, opts...)
@@ -66,7 +73,7 @@ func MeterOptions(opts ...options.Option) Option {
 }
 
 func NewOptions(opts ...Option) Options {
-	options := Options{Meter: meter.DefaultMeter}
+	options := Options{Meter: meter.DefaultMeter, DisableCompress: false}
 	for _, o := range opts {
 		o(&options)
 	}
@@ -90,8 +97,9 @@ func (h *Handler) Metrics(ctx context.Context, req *codecpb.Frame, rsp *codecpb.
 
 	w := io.Writer(buf)
 
-	if md, ok := metadata.FromContext(ctx); gzipAccepted(md) && ok {
-		md.Set(contentEncodingHeader, "gzip")
+	if md, ok := metadata.FromIncomingContext(ctx); gzipAccepted(md) && ok && !h.opts.DisableCompress {
+		omd, _ := metadata.FromOutgoingContext(ctx)
+		omd.Set(contentEncodingHeader, "gzip")
 		gz := gzipPool.Get().(*gzip.Writer)
 		defer gzipPool.Put(gz)
 
@@ -99,6 +107,7 @@ func (h *Handler) Metrics(ctx context.Context, req *codecpb.Frame, rsp *codecpb.
 		defer gz.Close()
 
 		w = gz
+		gz.Flush()
 	}
 
 	if err := h.opts.Meter.Write(w, h.opts.MeterOptions...); err != nil {

handler/meter/meter_test.go

@@ -0,0 +1,49 @@
+package meter
+
+import (
+	"context"
+	"testing"
+
+	codecpb "go.unistack.org/micro-proto/v4/codec"
+)
+
+func TestHandler_Metrics(t *testing.T) {
+	type fields struct {
+		opts Options
+	}
+	type args struct {
+		ctx context.Context
+		req *codecpb.Frame
+		rsp *codecpb.Frame
+	}
+	tests := []struct {
+		name    string
+		fields  fields
+		args    args
+		wantErr bool
+	}{
+		{
+			"Test #1",
+			fields{
+				opts: NewOptions(),
+			},
+			args{
+				context.Background(),
+				&codecpb.Frame{Data: []byte("gzip")},
+				&codecpb.Frame{},
+			},
+			true,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			h := &Handler{
+				opts: tt.fields.opts,
+			}
+			if err := h.Metrics(tt.args.ctx, tt.args.req, tt.args.rsp); (err != nil) != tt.wantErr {
+				t.Errorf("Metrics() error = %v, wantErr %v", err, tt.wantErr)
+			}
+			t.Logf("RSP: %v", tt.args.rsp.Data)
+		})
+	}
+}

http.go

@@ -217,7 +217,7 @@ func (h *Server) newHTTPHandler(handler interface{}, opts ...options.Option) *ht
 		pth := &patHandler{mtype: mtype, name: name, rcvr: rcvr}
 		hdlr.name = name
 
-		if err := hdlr.handlers.Insert(md["Method"], md["Path"][0], pth); err != nil {
+		if err := hdlr.handlers.Insert([]string{md["Method"]}, md["Path"], pth); err != nil {
 			h.opts.Logger.Error(h.opts.Context, fmt.Sprintf("cant add handler for %s %s", md["Method"][0], md["Path"][0]))
 		}
 
@@ -468,7 +468,7 @@ func (h *Server) Start() error {
 
 	go func() {
 		if cerr := hs.Serve(ts); cerr != nil && !errors.Is(cerr, net.ErrClosed) {
-			h.opts.Logger.Error(h.opts.Context, cerr)
+			h.opts.Logger.Error(h.opts.Context, cerr.Error())
 		}
 	}()
 

util.go

@@ -33,13 +33,11 @@ func FillRequest(ctx context.Context, req interface{}, opts ...FillRequestOption
 
 	cookies := md["Cookie"]
 	cmd := make(map[string]string, len(cookies))
-	for _, cookie := range cookies {
-		kv := strings.Split(cookie, "=")
+	kv := strings.Split(cookies, "=")
 	if len(kv) != 2 {
-			continue
+		return nil
 	}
 	cmd[strings.TrimSpace(kv[0])] = strings.TrimSpace(kv[1])
-	}
 	for idx := 0; idx < len(options.cookies)/2; idx += 2 {
 		k := http.CanonicalHeaderKey(options.cookies[idx])
 		v, ok := cmd[k]