recycling memory buffer in context

@@ -14,28 +14,28 @@ type BeegoInput struct {
 	CruSession  session.SessionStore
 	Params      map[string]string
 	Data        map[interface{}]interface{}
-	req         *http.Request
+	Request     *http.Request
 	RequestBody []byte
 }
 
 func NewInput(req *http.Request) *BeegoInput {
 	return &BeegoInput{
-		Params: make(map[string]string),
-		Data:   make(map[interface{}]interface{}),
-		req:    req,
+		Params:  make(map[string]string),
+		Data:    make(map[interface{}]interface{}),
+		Request: req,
 	}
 }
 
 func (input *BeegoInput) Protocol() string {
-	return input.req.Proto
+	return input.Request.Proto
 }
 
 func (input *BeegoInput) Uri() string {
-	return input.req.RequestURI
+	return input.Request.RequestURI
 }
 
 func (input *BeegoInput) Url() string {
-	return input.req.URL.String()
+	return input.Request.URL.String()
 }
 
 func (input *BeegoInput) Site() string {
@@ -43,9 +43,9 @@ func (input *BeegoInput) Site() string {
 }
 
 func (input *BeegoInput) Scheme() string {
-	if input.req.URL.Scheme != "" {
-		return input.req.URL.Scheme
-	} else if input.req.TLS == nil {
+	if input.Request.URL.Scheme != "" {
+		return input.Request.URL.Scheme
+	} else if input.Request.TLS == nil {
 		return "http"
 	} else {
 		return "https"
@@ -57,18 +57,18 @@ func (input *BeegoInput) Domain() string {
 }
 
 func (input *BeegoInput) Host() string {
-	if input.req.Host != "" {
-		hostParts := strings.Split(input.req.Host, ":")
+	if input.Request.Host != "" {
+		hostParts := strings.Split(input.Request.Host, ":")
 		if len(hostParts) > 0 {
 			return hostParts[0]
 		}
-		return input.req.Host
+		return input.Request.Host
 	}
 	return "localhost"
 }
 
 func (input *BeegoInput) Method() string {
-	return input.req.Method
+	return input.Request.Method
 }
 
 func (input *BeegoInput) Is(method string) bool {
@@ -88,7 +88,7 @@ func (input *BeegoInput) IsWebsocket() bool {
 }
 
 func (input *BeegoInput) IsUpload() bool {
-	return input.req.MultipartForm != nil
+	return input.Request.MultipartForm != nil
 }
 
 func (input *BeegoInput) IP() string {
@@ -96,7 +96,7 @@ func (input *BeegoInput) IP() string {
 	if len(ips) > 0 && ips[0] != "" {
 		return ips[0]
 	}
-	ip := strings.Split(input.req.RemoteAddr, ":")
+	ip := strings.Split(input.Request.RemoteAddr, ":")
 	if len(ip) > 0 {
 		return ip[0]
 	}
@@ -120,7 +120,7 @@ func (input *BeegoInput) SubDomains() string {
 }
 
 func (input *BeegoInput) Port() int {
-	parts := strings.Split(input.req.Host, ":")
+	parts := strings.Split(input.Request.Host, ":")
 	if len(parts) == 2 {
 		port, _ := strconv.Atoi(parts[1])
 		return port
@@ -140,16 +140,16 @@ func (input *BeegoInput) Param(key string) string {
 }
 
 func (input *BeegoInput) Query(key string) string {
-	input.req.ParseForm()
-	return input.req.Form.Get(key)
+	input.Request.ParseForm()
+	return input.Request.Form.Get(key)
 }
 
 func (input *BeegoInput) Header(key string) string {
-	return input.req.Header.Get(key)
+	return input.Request.Header.Get(key)
 }
 
 func (input *BeegoInput) Cookie(key string) string {
-	ck, err := input.req.Cookie(key)
+	ck, err := input.Request.Cookie(key)
 	if err != nil {
 		return ""
 	}
@@ -161,10 +161,10 @@ func (input *BeegoInput) Session(key interface{}) interface{} {
 }
 
 func (input *BeegoInput) Body() []byte {
-	requestbody, _ := ioutil.ReadAll(input.req.Body)
-	input.req.Body.Close()
+	requestbody, _ := ioutil.ReadAll(input.Request.Body)
+	input.Request.Body.Close()
 	bf := bytes.NewBuffer(requestbody)
-	input.req.Body = ioutil.NopCloser(bf)
+	input.Request.Body = ioutil.NopCloser(bf)
 	input.RequestBody = requestbody
 	return requestbody
 }

@@ -21,21 +21,18 @@ type BeegoOutput struct {
 	Context    *Context
 	Status     int
 	EnableGzip bool
-	res        http.ResponseWriter
 }
 
-func NewOutput(res http.ResponseWriter) *BeegoOutput {
-	return &BeegoOutput{
-		res: res,
-	}
+func NewOutput() *BeegoOutput {
+	return &BeegoOutput{}
 }
 
 func (output *BeegoOutput) Header(key, val string) {
-	output.res.Header().Set(key, val)
+	output.Context.ResponseWriter.Header().Set(key, val)
 }
 
 func (output *BeegoOutput) Body(content []byte) {
-	output_writer := output.res.(io.Writer)
+	output_writer := output.Context.ResponseWriter.(io.Writer)
 	if output.EnableGzip == true && output.Context.Input.Header("Accept-Encoding") != "" {
 		splitted := strings.SplitN(output.Context.Input.Header("Accept-Encoding"), ",", -1)
 		encodings := make([]string, len(splitted))
@@ -46,12 +43,12 @@ func (output *BeegoOutput) Body(content []byte) {
 		for _, val := range encodings {
 			if val == "gzip" {
 				output.Header("Content-Encoding", "gzip")
-				output_writer, _ = gzip.NewWriterLevel(output.res, gzip.BestSpeed)
+				output_writer, _ = gzip.NewWriterLevel(output.Context.ResponseWriter, gzip.BestSpeed)
 
 				break
 			} else if val == "deflate" {
 				output.Header("Content-Encoding", "deflate")
-				output_writer, _ = flate.NewWriter(output.res, flate.BestSpeed)
+				output_writer, _ = flate.NewWriter(output.Context.ResponseWriter, flate.BestSpeed)
 				break
 			}
 		}
@@ -104,7 +101,7 @@ func (output *BeegoOutput) Cookie(name string, value string, others ...interface
 	if len(others) > 4 {
 		fmt.Fprintf(&b, "; HttpOnly")
 	}
-	output.res.Header().Add("Set-Cookie", b.String())
+	output.Context.ResponseWriter.Header().Add("Set-Cookie", b.String())
 }
 
 var cookieNameSanitizer = strings.NewReplacer("\n", "-", "\r", "-")
@@ -129,7 +126,7 @@ func (output *BeegoOutput) Json(data interface{}, hasIndent bool, coding bool) e
 		content, err = json.Marshal(data)
 	}
 	if err != nil {
-		http.Error(output.res, err.Error(), http.StatusInternalServerError)
+		http.Error(output.Context.ResponseWriter, err.Error(), http.StatusInternalServerError)
 		return err
 	}
 	if coding {
@@ -149,7 +146,7 @@ func (output *BeegoOutput) Jsonp(data interface{}, hasIndent bool) error {
 		content, err = json.Marshal(data)
 	}
 	if err != nil {
-		http.Error(output.res, err.Error(), http.StatusInternalServerError)
+		http.Error(output.Context.ResponseWriter, err.Error(), http.StatusInternalServerError)
 		return err
 	}
 	callback := output.Context.Input.Query("callback")
@@ -174,7 +171,7 @@ func (output *BeegoOutput) Xml(data interface{}, hasIndent bool) error {
 		content, err = xml.Marshal(data)
 	}
 	if err != nil {
-		http.Error(output.res, err.Error(), http.StatusInternalServerError)
+		http.Error(output.Context.ResponseWriter, err.Error(), http.StatusInternalServerError)
 		return err
 	}
 	output.Body(content)
@@ -189,7 +186,7 @@ func (output *BeegoOutput) Download(file string) {
 	output.Header("Expires", "0")
 	output.Header("Cache-Control", "must-revalidate")
 	output.Header("Pragma", "public")
-	http.ServeFile(output.res, output.Context.Request, file)
+	http.ServeFile(output.Context.ResponseWriter, output.Context.Request, file)
 }
 
 func (output *BeegoOutput) ContentType(ext string) {
@@ -203,7 +200,7 @@ func (output *BeegoOutput) ContentType(ext string) {
 }
 
 func (output *BeegoOutput) SetStatus(status int) {
-	output.res.WriteHeader(status)
+	output.Context.ResponseWriter.WriteHeader(status)
 	output.Status = status
 }
 

@@ -28,7 +28,6 @@ const (
 
 var (
 	HTTPMETHOD = []string{"get", "post", "put", "delete", "patch", "options", "head"}
-	errorType  = reflect.TypeOf((*error)(nil)).Elem()
 )
 
 type controllerInfo struct {
@@ -41,19 +40,21 @@ type controllerInfo struct {
 }
 
 type ControllerRegistor struct {
-	routers      []*controllerInfo
-	fixrouters   []*controllerInfo
-	enableFilter bool
-	filters      map[int][]*FilterRouter
-	enableAuto   bool
-	autoRouter   map[string]map[string]reflect.Type //key:controller key:method value:reflect.type
+	routers       []*controllerInfo
+	fixrouters    []*controllerInfo
+	enableFilter  bool
+	filters       map[int][]*FilterRouter
+	enableAuto    bool
+	autoRouter    map[string]map[string]reflect.Type //key:controller key:method value:reflect.type
+	contextBuffer chan *beecontext.Context
 }
 
 func NewControllerRegistor() *ControllerRegistor {
 	return &ControllerRegistor{
-		routers:    make([]*controllerInfo, 0),
-		autoRouter: make(map[string]map[string]reflect.Type),
-		filters:    make(map[int][]*FilterRouter),
+		routers:       make([]*controllerInfo, 0),
+		autoRouter:    make(map[string]map[string]reflect.Type),
+		filters:       make(map[int][]*FilterRouter),
+		contextBuffer: make(chan *beecontext.Context, 100),
 	}
 }
 
@@ -433,15 +434,40 @@ func (p *ControllerRegistor) ServeHTTP(rw http.ResponseWriter, r *http.Request)
 
 	w := &responseWriter{writer: rw}
 	w.Header().Set("Server", BeegoServerName)
-	context := &beecontext.Context{
-		ResponseWriter: w,
-		Request:        r,
-		Input:          beecontext.NewInput(r),
-		Output:         beecontext.NewOutput(w),
+
+	// init context
+	var context *beecontext.Context
+	select {
+	case context = <-p.contextBuffer:
+		context.ResponseWriter = w
+		context.Request = r
+		context.Input.Request = r
+	default:
+		context = &beecontext.Context{
+			ResponseWriter: w,
+			Request:        r,
+			Input:          beecontext.NewInput(r),
+			Output:         beecontext.NewOutput(),
+		}
+		context.Output.Context = context
+		context.Output.EnableGzip = EnableGzip
 	}
-	context.Output.Context = context
-	context.Output.EnableGzip = EnableGzip
 
+	defer func() {
+		if context != nil {
+			select {
+			case p.contextBuffer <- context:
+			default:
+			}
+		}
+	}()
+
+	if context.Input.IsWebsocket() {
+		context.ResponseWriter = rw
+		context.Output = beecontext.NewOutput(rw)
+	}
+
+	// defined filter function
 	do_filter := func(pos int) (started bool) {
 		if p.enableFilter {
 			if l, ok := p.filters[pos]; ok {
@@ -460,11 +486,6 @@ func (p *ControllerRegistor) ServeHTTP(rw http.ResponseWriter, r *http.Request)
 		return false
 	}
 
-	if context.Input.IsWebsocket() {
-		context.ResponseWriter = rw
-		context.Output = beecontext.NewOutput(rw)
-	}
-
 	// session init
 	if SessionOn {
 		context.Input.CruSession = GlobalSessions.SessionStart(w, r)