update README

README.md

@@ -29,32 +29,28 @@ How to write your own rule file
 * you may learn how it works by our samples: [https://github.com/alipay-ct-wd/anyproxy/tree/master/rule_sample](https://github.com/alipay-ct-wd/anyproxy/tree/master/rule_sample)
 * rule file scheme
 ```javascript
+
 module.exports = {
     /*
-    these functions are required
+    these functions will overwrite the default ones, write your own when necessary.
-    you may leave their bodies blank if necessary
     */
 
     //whether to intercept this request by local logic
     //if the return value is true, anyproxy will call dealLocalResponse to get response data and will not send request to remote server anymore
-    shouldUseLocalResponse : function(req){
+    shouldUseLocalResponse : function(req,reqBody){
-        return false;
+        if(/hello/.test(reqBody.toString())){
+            return true;
+        }else{
+            return false;
+        }
     },
 
     //you may deal the response locally instead of sending it to server
     //this function be called when shouldUseLocalResponse returns true
     //callback(statusCode,resHeader,responseData)
     //e.g. callback(200,{"content-type":"text/html"},"hello world")
-    dealLocalResponse : function(req,callback){
+    dealLocalResponse : function(req,reqBody,callback){
-        //callback(statusCode,resHeader,responseData)
+        callback(statusCode,resHeader,responseData)
-    },
-
-    //req is user's request sent to the proxy server
-    // option is how the proxy server will send request to the real server. i.e. require("http").request(option,function(){...})
-    //you may return a customized option to replace the original option
-    replaceRequestOption : function(req,option){
-        var newOption = option;
-        return newOption;
     },
 
     //replace the request protocol when sending to the real server
@@ -64,6 +60,20 @@ module.exports = {
         return newProtocol;
     },
 
+    //req is user's request sent to the proxy server
+    //option is how the proxy server will send request to the real server. i.e. require("http").request(option,function(){...})
+    //you may return a customized option to replace the original option
+    //you should not write content-length header in options, since anyproxy will handle it for you
+    replaceRequestOption : function(req,option){
+        var newOption = option;
+        return newOption;
+    },
+
+    //replace the request body
+    replaceRequestData: function(req,data){
+        return data;
+    },
+
     //replace the statusCode before it's sent to the user
     replaceResponseStatusCode: function(req,res,statusCode){
         var newStatusCode = statusCode;
@@ -96,6 +106,7 @@ module.exports = {
     }
 
 };
+
 ```
 
 Using https features

rule_sample/rule__blank.js

@@ -18,8 +18,7 @@ module.exports = {
 	//callback(statusCode,resHeader,responseData)
 	//e.g. callback(200,{"content-type":"text/html"},"hello world")
 	dealLocalResponse : function(req,reqBody,callback){
-        callback(200,{"content-type":"text/html"},reqBody);
+        callback(statusCode,resHeader,responseData)
-        //callback(statusCode,resHeader,responseData)
 	},
 
     //replace the request protocol when sending to the real server
@@ -40,11 +39,7 @@ module.exports = {
 
     //replace the request body
     replaceRequestData: function(req,data){
-        // console.log(data.toString().indexOf("alipay.acquire.order.precreate"));
+        return data;
-        // if(data.toString().indexOf("alipay.acquire.order.precreate") >= 0){
-        //     req.needReplaceResponse = true;
-        // }
-        // return text;
     },
 
     //replace the statusCode before it's sent to the user