update some tips

@@ -53,7 +53,16 @@ func ProfIndex(rw http.ResponseWriter, r *http.Request) {
 	if command != "" {
 		toolbox.ProcessInput(command, rw)
 	} else {
-		rw.Write([]byte("request url like '/prof?command=lookup goroutine'"))
+		rw.Write([]byte("request url like '/prof?command=lookup goroutine'\n"))
+		rw.Write([]byte("the command have below types:\n"))
+		rw.Write([]byte("1. lookup goroutine\n"))
+		rw.Write([]byte("2. lookup heap\n"))
+		rw.Write([]byte("3. lookup threadcreate\n"))
+		rw.Write([]byte("4. lookup block\n"))
+		rw.Write([]byte("5. start cpuprof\n"))
+		rw.Write([]byte("6. stop cpuprof\n"))
+		rw.Write([]byte("7. get memprof\n"))
+		rw.Write([]byte("8. gc summary\n"))
 	}
 }
 

@@ -6,7 +6,7 @@ import (
 )
 
 func TestGetUrl(t *testing.T) {
-	resp, err := Get("http://beego.me/").Response()
+	resp, err := Get("http://beego.me/").Debug(true).Response()
 	if err != nil {
 		t.Fatal(err)
 	}

@@ -87,8 +87,7 @@ func (c *ConnWriter) connect() error {
 		return err
 	}
 
-	tcpConn, ok := conn.(*net.TCPConn)
-	if ok {
+	if tcpConn, ok := conn.(*net.TCPConn); ok {
 		tcpConn.SetKeepAlive(true)
 	}
 

@@ -81,17 +81,21 @@ Writing a provider is easy. You only need to define two struct types
 Maybe you will find the **memory** provider as good example.
 
 	type SessionStore interface {
-		Set(key, value interface{}) error // set session value
-		Get(key interface{}) interface{}  // get session value
-		Delete(key interface{}) error     // delete session value
-		SessionID() string                // return current sessionID
-		SessionRelease()                  // release the resource
+		Set(key, value interface{}) error //set session value
+		Get(key interface{}) interface{}  //get session value
+		Delete(key interface{}) error     //delete session value
+		SessionID() string                //back current sessionID
+		SessionRelease()                  // release the resource & save data to provider
+		Flush() error                     //delete all data
 	}
 	
 	type Provider interface {
 		SessionInit(maxlifetime int64, savePath string) error
 		SessionRead(sid string) (SessionStore, error)
+		SessionExist(sid string) bool
+		SessionRegenerate(oldsid, sid string) (SessionStore, error)
 		SessionDestroy(sid string) error
+		SessionAll() int //get all active session
 		SessionGC()
 	}