update to 4.0

rule_sample/sample_modify_response_data.js

@@ -0,0 +1,22 @@
+/* 
+  sample: 
+    modify response data of http://httpbin.org/user-agent
+  test:
+    curl 'http://httpbin.org/user-agent' --proxy http://127.0.0.1:8001
+  expected response:
+    { "user-agent": "curl/7.43.0" } -- AnyProxy Hacked! --
+*/
+
+module.exports = {
+  *beforeSendResponse(requestDetail, responseDetail) {
+    if (requestDetail.url === 'http://httpbin.org/user-agent') {
+      const newResponse = responseDetail.response;
+      newResponse.body += '-- AnyProxy Hacked! --';
+      return new Promise((resolve, reject) => {
+        setTimeout(() => { // delay the response for 5s
+          resolve({ response: newResponse });
+        }, 5000);
+      });
+    }
+  },
+};