diff --git a/lib/_http_agent.js b/lib/_http_agent.js
index 25ff16fea186da..dcb5ed376de835 100644
--- a/lib/_http_agent.js
+++ b/lib/_http_agent.js
@@ -341,6 +341,7 @@ Agent.prototype.keepSocketAlive = function keepSocketAlive(socket) {
 
 Agent.prototype.reuseSocket = function reuseSocket(socket, req) {
   debug('have free socket');
+  req.reusedSocket = true;
   socket.ref();
 };
 
diff --git a/lib/_http_incoming.js b/lib/_http_incoming.js
index ad3699cc44dc33..dc7602b913ae83 100644
--- a/lib/_http_incoming.js
+++ b/lib/_http_incoming.js
@@ -42,6 +42,7 @@ function IncomingMessage(socket) {
   this._readableState.readingMore = true;
 
   this.socket = socket;
+  this.reusedSocket = false;
 
   this.httpVersionMajor = null;
   this.httpVersionMinor = null;