fix memory leak of request context

context/input.go

@@ -323,8 +323,36 @@ func (input *BeegoInput) SetParam(key, val string) {
 // This function is used to clear parameters so they may be reset between filter
 // passes.
 func (input *BeegoInput) ResetParams() {
-	input.pnames = input.pnames[:0]
-	input.pvalues = input.pvalues[:0]
+	if len(input.pnames) > 0 {
+		input.pnames = input.pnames[:0]
+	}
+	if len(input.pvalues) > 0 {
+		input.pvalues = input.pvalues[:0]
+	}
+}
+
+// ResetData: reset data
+func (input *BeegoInput) ResetData() {
+	input.dataLock.Lock()
+	if input.data != nil {
+		input.data = nil
+	}
+	input.dataLock.Unlock()
+}
+
+// ResetBody: reset body
+func (input *BeegoInput) ResetBody() {
+	if len(input.RequestBody) > 0 {
+		input.RequestBody = []byte{}
+	}
+}
+
+// Clear: clear all data in input
+func (input *BeegoInput) Clear() {
+	input.ResetParams()
+	input.ResetData()
+	input.ResetBody()
+
 }
 
 // Query returns input data item string by a given string.

context/output.go

@@ -50,9 +50,15 @@ func NewOutput() *BeegoOutput {
 // Reset init BeegoOutput
 func (output *BeegoOutput) Reset(ctx *Context) {
 	output.Context = ctx
+	output.Clear()
+}
+
+// Clear: clear all data in output
+func (output *BeegoOutput) Clear() {
 	output.Status = 0
 }
 
+
 // Header sets response header item string via given key.
 func (output *BeegoOutput) Header(key, val string) {
 	output.Context.ResponseWriter.Header().Set(key, val)

router.go

@@ -319,6 +319,10 @@ func (p *ControllerRegister) GetContext() *beecontext.Context {
 
 // GiveBackContext put the ctx into pool so that it could be reuse
 func (p *ControllerRegister) GiveBackContext(ctx *beecontext.Context) {
+	// clear input cached data
+	ctx.Input.Clear()
+	// clear output cached data
+	ctx.Output.Clear()
 	p.pool.Put(ctx)
 }