[fix breaking] Emit the proxyResponse event on the HttpProxy instance to reduce listener churn and reference counts.

Author: indexzero

lib/node-http-proxy/http-proxy.js

@@ -318,7 +318,7 @@ HttpProxy.prototype.proxyRequest = function (req, res, buffer) {
     });
 
     // Allow observer to modify headers or abort response
-    try { req.emit('proxyResponse', req, res, response) }
+    try { self.emit('proxyResponse', req, res, response) }
     catch (ex) {
       errState = true;
       return;

lib/node-http-proxy/routing-proxy.js

@@ -116,6 +116,7 @@ RoutingProxy.prototype.add = function (options) {
     'start',
     'forward',
     'end',
+    'proxyResponse',
     'websocket:start',
     'websocket:end',
     'websocket:incoming',