diff --git a/index.js b/index.js
index 647d3dc..c654183 100644
--- a/index.js
+++ b/index.js
@@ -49,11 +49,11 @@ Gateway.prototype.stop = function(cb){
   gateway.stop(cb);
 }
 
-Gateway.prototype.addPlugin = function (name,plugin) {
+Gateway.prototype.addPlugin = function (name,plugin,allPluginNames) {
   assert(name,"plugin must have a name")
   assert(_.isString(name),"name must be a string");
   assert(_.isFunction(plugin),"plugin must be a function(config,logger,stats){return {onresponse:function(req,res,data,next){}}}");
-  const handler = this.pluginLoader.loadPlugin({plugin:plugin,pluginName:name});
+  const handler = this.pluginLoader.loadPlugin({plugin:plugin,pluginName:name,allPluginNames:allPluginNames});
   this.plugins.push(handler);
 };
 
diff --git a/lib/PluginsSeqManager.js b/lib/PluginsSeqManager.js
new file mode 100644
index 0000000..fd35974
--- /dev/null
+++ b/lib/PluginsSeqManager.js
@@ -0,0 +1,103 @@
+const debug = require('debug')('plugins-seq-manager')
+
+
+class PluginsSeqManager {
+
+    constructor(config, plugins){
+        this.plugins = plugins;
+        this.config = config;
+        this.urlPluginsCache = new Map();
+        this.defaultPlugins = plugins.filter( p => p.id === 'analytics' || p.id === 'metrics');
+        this.uniqueUrls = new Set();
+        
+        if ( this.config.edgemicro.plugins && this.config.edgemicro.plugins.disableExcUrlsCache !== true ) {
+            debug('Loading all plugins exclude urls in memory');
+            this.loadAllUrls();
+        } else {
+            if (  this.config.edgemicro.plugins && this.config.edgemicro.plugins.excludeUrls  ) {
+                this.config.edgemicro.plugins.excludeUrls.split(',').forEach( url =>    this.uniqueUrls.add(url) )
+            }
+            this.plugins.forEach( p => {
+                if ( p.id !== 'analytics' && p.id !== 'metrics'  && this.config[p.id] && this.config[p.id].excludeUrls  ) {
+                    this.config[p.id].excludeUrls.split(',').forEach( url => this.uniqueUrls.add(url));
+                }
+            });
+            debug('Unique exclude urls', Array.from(this.uniqueUrls));
+        }
+    }
+
+    loadAllUrls() {
+
+        // load global excludeUrls
+        if (  this.config.edgemicro.plugins && this.config.edgemicro.plugins.excludeUrls  ) {
+            this.config.edgemicro.plugins.excludeUrls.split(',').forEach( url => {
+                this.urlPluginsCache.set(url, {
+                    plugins: this.defaultPlugins,
+                    isGlobal: true
+                });
+            })
+        }
+        // load urls from the plugins which are enabled in sequence. 
+        this.plugins.forEach( p => {
+            if ( p.id !== 'analytics' && p.id !== 'metrics'  && this.config[p.id] ) {
+                let excludeUrls = null;
+                if ( this.config[p.id].excludeUrls ) {
+                    excludeUrls = this.config[p.id].excludeUrls;
+                } else if ( p.id === 'quota' && this.config['quotas'] && this.config['quotas'].excludeUrls ) {
+                    excludeUrls = this.config['quotas'].excludeUrls;
+                }
+                if (excludeUrls) {
+                    excludeUrls.split(',').forEach( url => {
+                            if ( !this.urlPluginsCache.has(url)) {
+                                // skip this plugin
+                                this.urlPluginsCache.set(url, {
+                                    plugins:  this.plugins.filter( plgn => plgn.id !== p.id)
+                                });
+                            } else {
+                                let value = this.urlPluginsCache.get(url);
+                                this.urlPluginsCache.set(url, {
+                                    plugins:  value.plugins.filter( plgn => plgn.id !== p.id)
+                                });
+                            }
+                        }
+                    );
+                }
+
+            }
+        });
+        debug('Total urls loaded: %d', this.urlPluginsCache.size);
+        for (let [url, value] of this.urlPluginsCache) {
+            debug('url: %s, plugins:',url,value.plugins.map(p=>p.id));
+        }
+    }
+
+    getPluginSequence(url){
+
+        if ( this.urlPluginsCache.has(url) ) {
+            return this.urlPluginsCache.get(url).plugins;
+        } else if( this.uniqueUrls.has(url) ){
+                // check if present in global exclude list
+            if ( this.config.edgemicro.plugins && this.config.edgemicro.plugins.excludeUrls && 
+                this.config.edgemicro.plugins.excludeUrls.split(',').indexOf(url) !== -1 ) {
+                return this.defaultPlugins;
+            } else {
+                let urlPlugins = [ ...this.defaultPlugins ];
+                this.plugins.forEach( p => {
+                    if ( p.id === 'quota' && ( !this.config['quotas'] ||
+                        !this.config['quotas'].excludeUrls || this.config['quotas'].excludeUrls.split(',').indexOf(url) === -1 )) {
+                        urlPlugins.push(p);
+                    } else if ( p.id !== 'analytics' && p.id !== 'metrics' &&  ( !this.config[p.id] ||
+                            !this.config[p.id].excludeUrls || this.config[p.id].excludeUrls.split(',').indexOf(url) === -1 ) ) {
+                        urlPlugins.push(p);
+                    }
+                });
+                return urlPlugins;
+            }
+        } else {
+            return this.plugins;
+        }
+        
+    }
+}
+
+module.exports =  PluginsSeqManager;
\ No newline at end of file
diff --git a/lib/gateway.js b/lib/gateway.js
index b47db1f..671515b 100644
--- a/lib/gateway.js
+++ b/lib/gateway.js
@@ -12,6 +12,7 @@ const errorsLib = require('./errors-middleware')
 const logging = require('./logging')
 const assert = require('assert')
 const configService = require('./config')
+const PluginsSeqManager = require('./PluginsSeqManager')
 
 const CONSOLE_LOG_TAG = 'microgateway-core gateway';
 //http server
@@ -32,7 +33,8 @@ module.exports.start = function(plugins, cb) {
         const logger = logging.getLogger()
 
         const configProxy = configProxyFactory()
-        const pluginsMiddleware = pluginsFactory(plugins)
+        const pluginsSeqManager = new PluginsSeqManager(config, plugins);
+        const pluginsMiddleware = pluginsFactory(pluginsSeqManager)
         const errors = errorsLib(config, logger)
 
         const serverMiddleware = function(req, res) {
diff --git a/lib/logging.js b/lib/logging.js
index 6c60ec2..ef0f8c6 100644
--- a/lib/logging.js
+++ b/lib/logging.js
@@ -46,6 +46,7 @@ module.exports.init = function init(stubConfig, options) {
   var records = [];
   var offset = 0;
   var nextRotation = 0;
+  var logFileOpenFailWarn = false;
 
 
   // buffer the write if a write is already in progress
@@ -53,6 +54,7 @@ module.exports.init = function init(stubConfig, options) {
   // "Note that it is unsafe to use fs.write multiple times on the same file without waiting for the callback."
   const writeLogRecordToFile = function (record,cb) {
     if (Date.now() > nextRotation) {
+      if ( !logFileOpenFailWarn ) {
       rotation++;
      if (logFileFd) {
         fs.close(logFileFd);
@@ -63,8 +65,18 @@ module.exports.init = function init(stubConfig, options) {
           writeConsoleLog('log', {component: CONSOLE_LOG_TAG}, 'logging to ' + logFilePath);
         }
       }
-   
-      logFileFd = fs.openSync(logFilePath, 'a', 0o0600);
+    }
+      try {
+        logFileFd = fs.openSync(logFilePath, 'a', 0o0600);
+      } catch (e) {
+        if ( !logFileOpenFailWarn ) {
+          writeConsoleLog('log',{component: CONSOLE_LOG_TAG}, 'Error in creating log file: %s, error: %s',logFilePath, e.message);
+          logFileOpenFailWarn = true;
+        }
+        writeLogRecordToConsole(record);
+       return record;
+      }
+      logFileOpenFailWarn = false;
       nextRotation = Date.now() + ((logConfig.rotate_interval || 24) * 60 * 60 * 1000); // hours -> ms
     }
 
@@ -178,6 +190,10 @@ module.exports.init = function init(stubConfig, options) {
       if ( !isValidIPaddress(clientIP) ) {
         clientIP = '';
       }
+      let targetPortStr = '';
+      if ( !isNaN(parseInt(sourceRequest.targetPort)) ) {
+        targetPortStr = ':'+ parseInt(sourceRequest.targetPort);
+      }
       sourceRequest.transactionContextData = {
         correlation_id: correlation_id,
         method: sourceRequest.method,
@@ -185,7 +201,8 @@ module.exports.init = function init(stubConfig, options) {
         host: (sourceRequest.headers ? sourceRequest.headers.host : ''),
         clientId: (sourceRequest.headers ? sourceRequest.headers['x-api-key'] : ''),
         remoteAddress: (sourceRequest.socket ? (sourceRequest.socket.remoteAddress + ':' + sourceRequest.socket.remotePort) : ':0'),
-        clientIP: clientIP
+        clientIP: clientIP,
+        targetHostName: sourceRequest.targetHostname + targetPortStr
     }
     }
   };
diff --git a/lib/plugins-middleware.js b/lib/plugins-middleware.js
index 2caa9d3..8cfae1e 100644
--- a/lib/plugins-middleware.js
+++ b/lib/plugins-middleware.js
@@ -22,14 +22,15 @@ var traceHelper = require('./trace-helper');
 
 /**
  * injects plugins into gateway
- * @param plugins
+ * @param pluginsSeqManager
  * @returns {Function(req,res,cb)}
  */
-module.exports = function(plugins) {
+module.exports = function(pluginsSeqManager) {
     const logger = logging.getLogger();
 
     return function(sourceRequest, sourceResponse, next) {
         const startTime = sourceRequest.reqStartTimestamp ||  Date.now();
+        const plugins =  pluginsSeqManager.getPluginSequence(sourceRequest.url);
         const correlation_id = uuid.v1();
         sourceRequest['correlationId'] = correlation_id;
         logger.setTransactionContext( correlation_id,sourceRequest);
@@ -263,8 +264,9 @@ function getTargetRequest(sourceRequest, sourceResponse, plugins, startTime, cor
         logger.eventLog({level:'warn',
             d: Date.now() - startTime,
             err: err,
-            req: sourceRequest,
-            component:'plugins-middleware'
+            h: sourceRequest.transactionContextData.targetHostName,
+            component:'plugins-middleware',
+            transactionContextData: sourceRequest.transactionContextData
         }, 'targetRequest error');
         debug('targetRequest error', correlation_id, err.stack);
         async.series(getPluginHooksForEvent('error', {
@@ -297,9 +299,24 @@ function getTargetRequest(sourceRequest, sourceResponse, plugins, startTime, cor
             });
     });
 
+    // abort the target request if the connection from the sourceRequest/sourceResponse is closed.
+    sourceResponse.on('close', function(e){
+        if (sourceRequest.aborted) {
+            debug('source request aborted - abort target request', correlation_id);
+            targetRequest.abort();
+            logger.eventLog({
+                level:'info',
+                res: sourceResponse,
+                req: sourceRequest,
+                d: Date.now() - ( sourceRequest.headers['target_sent_start_timestamp'] || startTime ),
+                component:'plugins-middleware'
+            }, 'sourceResponse on close, source request aborted - abort target request');
+        }
+    });
+
     const logInfo = {
         level: 'info',
-        req: targetRequest,
+        h: sourceRequest.transactionContextData.targetHostName,
         component:'plugins-middleware',
         transactionContextData: sourceRequest.transactionContextData
     };
@@ -342,7 +359,7 @@ function handleTargetResponse(targetRequest, targetResponse, options, cb) {
             logger.eventLog({
                 level:'info',
                 res: targetResponse,
-                req: targetRequest,
+                h: sourceRequest.transactionContextData.targetHostName,
                 d: Date.now() - ( sourceRequest.headers['target_sent_start_timestamp'] || start ),
                 component:'plugins-middleware',
                 transactionContextData: sourceRequest.transactionContextData
@@ -371,7 +388,9 @@ function handleTargetResponse(targetRequest, targetResponse, options, cb) {
             Object.keys(targetResponse.headers).forEach(function(header) {
                 // skip setting the 'connection: keep-alive' header
                 // setting it causes gateway to not accept any more connections
-                if (header !== 'connection') {
+                // Headers that have been set in onresponse are also skipped to let the plugins override those from the
+                // target response.
+                if (header !== 'connection' && !sourceResponse.hasHeader(header)) {
                     sourceResponse.setHeader(header, targetResponse.headers[header]);
                 }
             });
@@ -502,20 +521,21 @@ function _subscribeToResponseEvents(plugins, sourceRequest, sourceResponse, targ
                 if (err) {
                     logger.eventLog({level:'error',req: sourceRequest, res: sourceResponse, err: err,component:'plugins-middleware'});
                 }
-                if (result && result.length) {
-                    sourceResponse.end(result);
-                } else {
-                    sourceResponse.end();
+                if (!sourceResponse.writableFinished) {
+                    if (result && result.length) {
+                        sourceResponse.end(result);
+                    } else {
+                        sourceResponse.end();
+                    }
+                    debug('sourceResponse close', correlation_id, sourceResponse.statusCode);
+                    logger.eventLog({
+                        level:'info',
+                        res: sourceResponse,
+                        req: sourceRequest,
+                        d: Date.now() - sourceRequest.reqStartTimestamp || start,
+                        component:'plugins-middleware'
+                    }, 'sourceResponse' );
                 }
-                debug('sourceResponse close', correlation_id, sourceResponse.statusCode);
-                logger.eventLog({
-                    level:'info',
-                    res: sourceResponse,
-                    req: sourceRequest,
-                    d: Date.now() - sourceRequest.reqStartTimestamp || start,
-                    component:'plugins-middleware'
-                }, 'sourceResponse' );
-
                 return cb(err, result);
             });
     });
@@ -531,8 +551,10 @@ function _subscribeToResponseEvents(plugins, sourceRequest, sourceResponse, targ
         logger.eventLog({
             level:'info',
             res: targetResponse,
+            h: sourceRequest.transactionContextData.targetHostName,
             d: Date.now() - ( sourceRequest.headers['target_sent_start_timestamp'] || targetStartTime ),
-            component:'plugins-middleware'
+            component:'plugins-middleware',
+            transactionContextData: sourceRequest.transactionContextData
         }, 'targetResponse close');
     });
 
@@ -540,9 +562,11 @@ function _subscribeToResponseEvents(plugins, sourceRequest, sourceResponse, targ
         logger.eventLog({
             level:'error',
             res: targetResponse,
+            h: sourceRequest.transactionContextData.targetHostName,
             d: Date.now() - ( sourceRequest.headers['target_sent_start_timestamp'] || targetStartTime ),
             err: err,
-            component:'plugins-middleware'
+            component:'plugins-middleware',
+            transactionContextData: sourceRequest.transactionContextData
         }, 'targetResponse error');
 
         debug('targetResponse error', correlation_id, err.stack);
diff --git a/lib/plugins.js b/lib/plugins.js
index 3f32b96..f25634d 100644
--- a/lib/plugins.js
+++ b/lib/plugins.js
@@ -17,6 +17,7 @@ const CONSOLE_LOG_TAG = 'microgateway-core plugins';
 
 var Plugins = function () {
   this.config = configService.get();
+  this.emgConfigs = null;
 };
 
 
@@ -28,6 +29,18 @@ var Plugins = function () {
 Plugins.prototype.loadPlugin = function (options) {
   var name;
   var plugin;
+  // extract only emg level configs by removing plugin configs.
+  if (options.allPluginNames && !this.emgConfigs) {
+    this.emgConfigs = {}
+    let sequence = [];
+    if ( this.config.edgemicro.plugins && this.config.edgemicro.plugins.sequence ) {
+      sequence = this.config.edgemicro.plugins.sequence;
+    }
+    Object.keys(this.config).filter( key => sequence.indexOf(key) === -1 && key !== 'quotas'
+    && options.allPluginNames.indexOf(key) === -1).forEach( emgKey => {
+      this.emgConfigs[emgKey] = this.config[emgKey];
+    });
+  }
 
   if (_.isObject(options)) {
     assert(options.plugin, "must have plugin loaded in memory");
@@ -47,17 +60,12 @@ Plugins.prototype.loadPlugin = function (options) {
 
   var middleware;
   const subconfig = config[name] || {};
-
+  subconfig.emgConfigs = this.emgConfigs;
   if (plugin) {
     if(config.keys && config.keys.key && config.keys.secret){
       subconfig.key = config.keys.key;
       subconfig.secret = config.keys.secret;
     }
-    if(name==='quota') {
-      subconfig.proxies = config.proxies;
-      subconfig.product_to_proxy = config.product_to_proxy;
-      subconfig.global = config.edgemicro.global;
-    }
     middleware = plugin(subconfig, logger, stats);
     assert(_.isObject(middleware), 'ignoring invalid plugin handlers ' + name);
     middleware.id = name;
diff --git a/lib/proxy-path-matcher.js b/lib/proxy-path-matcher.js
index da7e54c..a7b3134 100644
--- a/lib/proxy-path-matcher.js
+++ b/lib/proxy-path-matcher.js
@@ -4,6 +4,12 @@ const minimatch = require('minimatch');
 //const util = require('util');
 
 const matchPath = (requestPath, proxyPath) => {
+  if ( requestPath.charAt(requestPath.length-1) !== '/') {
+    requestPath += '/';
+  }
+  if ( proxyPath.charAt(proxyPath.length-1) !== '/') {
+    proxyPath += '/';
+  }
   var pathRegex = generateMatchingRegex(proxyPath);
   return pathRegex.test(requestPath);
 }
diff --git a/npm-shrinkwrap.json b/npm-shrinkwrap.json
index d8e9ba2..96364a8 100644
--- a/npm-shrinkwrap.json
+++ b/npm-shrinkwrap.json
@@ -1,25 +1,25 @@
 {
   "name": "microgateway-core",
-  "version": "3.1.4",
+  "version": "3.1.6",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
     "@babel/code-frame": {
-      "version": "7.8.3",
-      "resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.8.3.tgz",
-      "integrity": "sha512-a9gxpmdXtZEInkCSHUJDLHZVBgb1QS0jhss4cPP93EW7s+uC5bikET2twEF3KV+7rDblJcmNvTR7VJejqd2C2g==",
+      "version": "7.10.3",
+      "resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.10.3.tgz",
+      "integrity": "sha512-fDx9eNW0qz0WkUeqL6tXEXzVlPh6Y5aCDEZesl0xBGA8ndRukX91Uk44ZqnkECp01NAZUdCAl+aiQNGi0k88Eg==",
       "dev": true,
       "requires": {
-        "@babel/highlight": "^7.8.3"
+        "@babel/highlight": "^7.10.3"
       }
     },
     "@babel/generator": {
-      "version": "7.9.5",
-      "resolved": "https://registry.npmjs.org/@babel/generator/-/generator-7.9.5.tgz",
-      "integrity": "sha512-GbNIxVB3ZJe3tLeDm1HSn2AhuD/mVcyLDpgtLXa5tplmWrJdF/elxB56XNqCuD6szyNkDi6wuoKXln3QeBmCHQ==",
+      "version": "7.10.3",
+      "resolved": "https://registry.npmjs.org/@babel/generator/-/generator-7.10.3.tgz",
+      "integrity": "sha512-drt8MUHbEqRzNR0xnF8nMehbY11b1SDkRw03PSNH/3Rb2Z35oxkddVSi3rcaak0YJQ86PCuE7Qx1jSFhbLNBMA==",
       "dev": true,
       "requires": {
-        "@babel/types": "^7.9.5",
+        "@babel/types": "^7.10.3",
         "jsesc": "^2.5.1",
         "lodash": "^4.17.13",
         "source-map": "^0.5.0"
@@ -34,80 +34,80 @@
       }
     },
     "@babel/helper-function-name": {
-      "version": "7.9.5",
-      "resolved": "https://registry.npmjs.org/@babel/helper-function-name/-/helper-function-name-7.9.5.tgz",
-      "integrity": "sha512-JVcQZeXM59Cd1qanDUxv9fgJpt3NeKUaqBqUEvfmQ+BCOKq2xUgaWZW2hr0dkbyJgezYuplEoh5knmrnS68efw==",
+      "version": "7.10.3",
+      "resolved": "https://registry.npmjs.org/@babel/helper-function-name/-/helper-function-name-7.10.3.tgz",
+      "integrity": "sha512-FvSj2aiOd8zbeqijjgqdMDSyxsGHaMt5Tr0XjQsGKHD3/1FP3wksjnLAWzxw7lvXiej8W1Jt47SKTZ6upQNiRw==",
       "dev": true,
       "requires": {
-        "@babel/helper-get-function-arity": "^7.8.3",
-        "@babel/template": "^7.8.3",
-        "@babel/types": "^7.9.5"
+        "@babel/helper-get-function-arity": "^7.10.3",
+        "@babel/template": "^7.10.3",
+        "@babel/types": "^7.10.3"
       }
     },
     "@babel/helper-get-function-arity": {
-      "version": "7.8.3",
-      "resolved": "https://registry.npmjs.org/@babel/helper-get-function-arity/-/helper-get-function-arity-7.8.3.tgz",
-      "integrity": "sha512-FVDR+Gd9iLjUMY1fzE2SR0IuaJToR4RkCDARVfsBBPSP53GEqSFjD8gNyxg246VUyc/ALRxFaAK8rVG7UT7xRA==",
+      "version": "7.10.3",
+      "resolved": "https://registry.npmjs.org/@babel/helper-get-function-arity/-/helper-get-function-arity-7.10.3.tgz",
+      "integrity": "sha512-iUD/gFsR+M6uiy69JA6fzM5seno8oE85IYZdbVVEuQaZlEzMO2MXblh+KSPJgsZAUx0EEbWXU0yJaW7C9CdAVg==",
       "dev": true,
       "requires": {
-        "@babel/types": "^7.8.3"
+        "@babel/types": "^7.10.3"
       }
     },
     "@babel/helper-split-export-declaration": {
-      "version": "7.8.3",
-      "resolved": "https://registry.npmjs.org/@babel/helper-split-export-declaration/-/helper-split-export-declaration-7.8.3.tgz",
-      "integrity": "sha512-3x3yOeyBhW851hroze7ElzdkeRXQYQbFIb7gLK1WQYsw2GWDay5gAJNw1sWJ0VFP6z5J1whqeXH/WCdCjZv6dA==",
+      "version": "7.10.1",
+      "resolved": "https://registry.npmjs.org/@babel/helper-split-export-declaration/-/helper-split-export-declaration-7.10.1.tgz",
+      "integrity": "sha512-UQ1LVBPrYdbchNhLwj6fetj46BcFwfS4NllJo/1aJsT+1dLTEnXJL0qHqtY7gPzF8S2fXBJamf1biAXV3X077g==",
       "dev": true,
       "requires": {
-        "@babel/types": "^7.8.3"
+        "@babel/types": "^7.10.1"
       }
     },
     "@babel/helper-validator-identifier": {
-      "version": "7.9.5",
-      "resolved": "https://registry.npmjs.org/@babel/helper-validator-identifier/-/helper-validator-identifier-7.9.5.tgz",
-      "integrity": "sha512-/8arLKUFq882w4tWGj9JYzRpAlZgiWUJ+dtteNTDqrRBz9Iguck9Rn3ykuBDoUwh2TO4tSAJlrxDUOXWklJe4g==",
+      "version": "7.10.3",
+      "resolved": "https://registry.npmjs.org/@babel/helper-validator-identifier/-/helper-validator-identifier-7.10.3.tgz",
+      "integrity": "sha512-bU8JvtlYpJSBPuj1VUmKpFGaDZuLxASky3LhaKj3bmpSTY6VWooSM8msk+Z0CZoErFye2tlABF6yDkT3FOPAXw==",
       "dev": true
     },
     "@babel/highlight": {
-      "version": "7.9.0",
-      "resolved": "https://registry.npmjs.org/@babel/highlight/-/highlight-7.9.0.tgz",
-      "integrity": "sha512-lJZPilxX7Op3Nv/2cvFdnlepPXDxi29wxteT57Q965oc5R9v86ztx0jfxVrTcBk8C2kcPkkDa2Z4T3ZsPPVWsQ==",
+      "version": "7.10.3",
+      "resolved": "https://registry.npmjs.org/@babel/highlight/-/highlight-7.10.3.tgz",
+      "integrity": "sha512-Ih9B/u7AtgEnySE2L2F0Xm0GaM729XqqLfHkalTsbjXGyqmf/6M0Cu0WpvqueUlW+xk88BHw9Nkpj49naU+vWw==",
       "dev": true,
       "requires": {
-        "@babel/helper-validator-identifier": "^7.9.0",
+        "@babel/helper-validator-identifier": "^7.10.3",
         "chalk": "^2.0.0",
         "js-tokens": "^4.0.0"
       }
     },
     "@babel/parser": {
-      "version": "7.9.4",
-      "resolved": "https://registry.npmjs.org/@babel/parser/-/parser-7.9.4.tgz",
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     },
     "v8-compile-cache": {
-      "version": "2.1.0",
-      "resolved": "https://registry.npmjs.org/v8-compile-cache/-/v8-compile-cache-2.1.0.tgz",
-      "integrity": "sha512-usZBT3PW+LOjM25wbqIlZwPeJV+3OSz3M1k1Ws8snlW39dZyYL9lOGC5FgPVHfk0jKmjiDV8Z0mIbVQPiwFs7g==",
+      "version": "2.1.1",
+      "resolved": "https://registry.npmjs.org/v8-compile-cache/-/v8-compile-cache-2.1.1.tgz",
+      "integrity": "sha512-8OQ9CL+VWyt3JStj7HX7/ciTL2V3Rl1Wf5OL+SNTm0yK1KvtReVulksyeRnCANHHuUxHlQig+JJDlUhBt1NQDQ==",
       "dev": true
     },
     "validate-npm-package-license": {
@@ -6904,6 +7590,48 @@
       "integrity": "sha1-2e8H3Od7mQK4o6j6SzHD4/fm6Ho=",
       "dev": true
     },
+    "wide-align": {
+      "version": "1.1.3",
+      "resolved": "https://registry.npmjs.org/wide-align/-/wide-align-1.1.3.tgz",
+      "integrity": "sha512-QGkOQc8XL6Bt5PwnsExKBPuMKBxnGxWWW3fU55Xt4feHozMUhdUMaBCk290qpm/wG5u/RSKzwdAC4i51YigihA==",
+      "dev": true,
+      "requires": {
+        "string-width": "^1.0.2 || 2"
+      },
+      "dependencies": {
+        "ansi-regex": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-3.0.0.tgz",
+          "integrity": "sha1-7QMXwyIGT3lGbAKWa922Bas32Zg=",
+          "dev": true
+        },
+        "is-fullwidth-code-point": {
+          "version": "2.0.0",
+          "resolved": "https://registry.npmjs.org/is-fullwidth-code-point/-/is-fullwidth-code-point-2.0.0.tgz",
+          "integrity": "sha1-o7MKXE8ZkYMWeqq5O+764937ZU8=",
+          "dev": true
+        },
+        "string-width": {
+          "version": "2.1.1",
+          "resolved": "https://registry.npmjs.org/string-width/-/string-width-2.1.1.tgz",
+          "integrity": "sha512-nOqH59deCq9SRHlxq1Aw85Jnt4w6KvLKqWVik6oA9ZklXLNIOlqg4F2yrT1MVaTjAqvVwdfeZ7w7aCvJD7ugkw==",
+          "dev": true,
+          "requires": {
+            "is-fullwidth-code-point": "^2.0.0",
+            "strip-ansi": "^4.0.0"
+          }
+        },
+        "strip-ansi": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-4.0.0.tgz",
+          "integrity": "sha1-qEeQIusaw2iocTibY1JixQXuNo8=",
+          "dev": true,
+          "requires": {
+            "ansi-regex": "^3.0.0"
+          }
+        }
+      }
+    },
     "word-wrap": {
       "version": "1.2.3",
       "resolved": "https://registry.npmjs.org/word-wrap/-/word-wrap-1.2.3.tgz",
@@ -7042,6 +7770,17 @@
         "camelcase": "^5.0.0",
         "decamelize": "^1.2.0"
       }
+    },
+    "yargs-unparser": {
+      "version": "1.6.0",
+      "resolved": "https://registry.npmjs.org/yargs-unparser/-/yargs-unparser-1.6.0.tgz",
+      "integrity": "sha512-W9tKgmSn0DpSatfri0nx52Joq5hVXgeLiqR/5G0sZNDoLZFOr/xjBUDcShCOGNsBnEMNo1KAMBkTej1Hm62HTw==",
+      "dev": true,
+      "requires": {
+        "flat": "^4.1.0",
+        "lodash": "^4.17.15",
+        "yargs": "^13.3.0"
+      }
     }
   }
 }
diff --git a/package.json b/package.json
index b7f6074..d9dd119 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "microgateway-core",
-  "version": "3.1.4",
+  "version": "3.1.6",
   "description": "Core engine for Apigee Edge Microgateway",
   "main": "index.js",
   "license": "Apache-2.0",
@@ -11,9 +11,8 @@
   "dependencies": {
     "async": "~1.5.2",
     "debug": "~3.1.0",
-    "helper": "0.0.13",
-    "lodash": "^4.17.15",
-    "microgateway-config": "^3.1.3",
+    "lodash": "^4.17.19",
+    "microgateway-config": "apigee/microgateway-config#for-3.1.6",
     "minimatch": "^3.0.4",
     "opentracing": "^0.14.3",
     "request": "~2.87.0",
@@ -27,7 +26,7 @@
     "eslint-config-google": "^0.13.0",
     "istanbul": "~0.4.2",
     "jshint-stylish": "^2.2.1",
-    "mocha": "^5.2.0",
+    "mocha": "^7.0.0",
     "nyc": "^14.1.1",
     "restify": "^8.4.0",
     "rewire": "^4.0.1",
diff --git a/tests/plugin-lifecycle-tests.js b/tests/plugin-lifecycle-tests.js
index a47c353..1955c73 100644
--- a/tests/plugin-lifecycle-tests.js
+++ b/tests/plugin-lifecycle-tests.js
@@ -301,6 +301,27 @@ describe('test lifecycle events', function() {
       });
     });
   });
+
+  it('should keep the header set on the source response', function(done) {
+    this.timeout(20000);
+    const testPlugin = TestPlugin((type, data, cb) => cb());
+    const handler = testPlugin.init();
+    handler.onresponse = (sourceReq, sourceRes, targetRes, data, next) => {
+      sourceRes.setHeader('content-type', 'application/octet-stream');
+      sourceRes.setHeader('original-content-type', targetRes.headers['content-type']);
+      next();
+    };
+    gateway.addPlugin('test', () => handler);
+
+    gateway.start((err) => {
+      assert(!err, err);
+      request({ method: 'GET', url: 'http://localhost:' + gatewayPort + '/v1/echo/get' }, (err, r) => {
+        assert.equal(r.headers['content-type'], 'application/octet-stream');
+        assert.equal(r.headers['original-content-type'], 'application/json');
+        done();
+      });
+    });
+  });
 });
 
 function _findHeaders(headers, expectedHeaders) {
diff --git a/tests/plugins-behavior.js b/tests/plugins-behavior.js
index 866f39d..39d60d5 100644
--- a/tests/plugins-behavior.js
+++ b/tests/plugins-behavior.js
@@ -28,7 +28,7 @@ describe('plugin behavior', () => {
     });
   });
 
-  it('will provide three arguments to in req, res, data, next format', (done) => {
+  it('will provide four arguments to in req, res, data, next format', (done) => {
     var plugins = {
       'ondata_request': function(req, res, data, next) {
         assert.equal(req, 'foo');
@@ -51,7 +51,7 @@ describe('plugin behavior', () => {
     });
   });
 
-  it('will provide three arguments to in req, res, targetRes, data,  next format', (done) => {
+  it('will provide five arguments to in req, res, targetRes, data,  next format', (done) => {
     var plugins = {
       'ondata_request': function(req, res, targetResponse, data, next) {
         assert.equal(req, 'foo');
diff --git a/tests/target-behavior.js b/tests/target-behavior.js
index 0d6c202..c9ac032 100644
--- a/tests/target-behavior.js
+++ b/tests/target-behavior.js
@@ -87,12 +87,17 @@ describe('target behavior', () => {
             'targetSecure' : false,
             'targetHostname' : 'localhost',
             'targetPort' : 8888,
+            transactionContextData: {
+                'targetHostName' : 'localhost'
+            }
         }
 
         var sourceResponse = {
             'proxy' : {
                 'agent' : undefined
             },
+            'on': function(event, cb) {
+            },
             'content-length' : 50
         }
 
@@ -163,12 +168,17 @@ describe('target behavior', () => {
             'targetSecure' : false,
             'targetHostname' : 'this.does.not.exist',
             'targetPort' : 8999,
+            transactionContextData: {
+                'targetHostName' : 'this.does.not.exist'
+            }
         }
 
         var sourceResponse = {
             'proxy' : {
                 'agent' : undefined
             },
+            'on': function(event, cb) {
+            },
             'content-length' : 50
         }
 
@@ -245,12 +255,17 @@ describe('target behavior', () => {
                 'targetSecure' : false,
                 'targetHostname' : 'localhost',
                 'targetPort' : 8999,
+                transactionContextData: {
+                    'targetHostName' : 'this.does.not.exist'
+                }
             }
 
             var sourceResponse = {
                 'proxy' : {
                     'agent' : undefined
                 },
+                'on': function(event, cb) {
+                },
                 'content-length' : 50
             }