From 49c0ea84e689ebaa2a3f06be44d78a0387486471 Mon Sep 17 00:00:00 2001
From: Fedor Indutny <fedor@indutny.com>
Date: Sun, 8 Mar 2015 20:30:01 -0400
Subject: [PATCH] http_client: ensure empty socket on error

Read all pending data out of the socket on `error` event and ensure that
no `data`/`end` handlers will be invoked on `socket.destroy()`.
Otherwise following assertion happens:

    AssertionError: null == true
        at TLSSocket.socketOnData (_http_client.js:308:3)
        at TLSSocket.emit (events.js:107:17)
        at TLSSocket.Readable.read (_stream_readable.js:373:10)
        at TLSSocket.socketCloseListener (_http_client.js:229:10)
        at TLSSocket.emit (events.js:129:20)
        at TCP.close (net.js:476:12)

Fix: https://github.com/joyent/node/issues/9348
---
 lib/_http_client.js                           |  9 +++-
 .../test-http-client-read-in-error.js         | 42 +++++++++++++++++++
 2 files changed, 50 insertions(+), 1 deletion(-)
 create mode 100644 test/parallel/test-http-client-read-in-error.js

diff --git a/lib/_http_client.js b/lib/_http_client.js
index 5e722b4abc6450..82bab785e232fb 100644
--- a/lib/_http_client.js
+++ b/lib/_http_client.js
@@ -247,7 +247,6 @@ function socketCloseListener() {
 
 function socketErrorListener(err) {
   var socket = this;
-  var parser = socket.parser;
   var req = socket._httpMessage;
   debug('SOCKET ERROR:', err.message, err.stack);
 
@@ -258,10 +257,18 @@ function socketErrorListener(err) {
     req.socket._hadError = true;
   }
 
+  // Handle any pending data
+  socket.read();
+
+  var parser = socket.parser;
   if (parser) {
     parser.finish();
     freeParser(parser, req, socket);
   }
+
+  // Ensure that no further data will come out of the socket
+  socket.removeListener('data', socketOnData);
+  socket.removeListener('end', socketOnEnd);
   socket.destroy();
 }
 
diff --git a/test/parallel/test-http-client-read-in-error.js b/test/parallel/test-http-client-read-in-error.js
new file mode 100644
index 00000000000000..6568d7e28d0223
--- /dev/null
+++ b/test/parallel/test-http-client-read-in-error.js
@@ -0,0 +1,42 @@
+var net = require('net');
+var http = require('http');
+var util = require('util');
+
+function Agent() {
+  http.Agent.call(this);
+}
+util.inherits(Agent, http.Agent);
+
+Agent.prototype.createConnection = function() {
+  var self = this;
+  var socket = new net.Socket();
+
+  socket.on('error', function() {
+    socket.push('HTTP/1.1 200\r\n\r\n');
+  });
+
+  socket.on('newListener', function onNewListener(name) {
+    if (name !== 'error')
+      return;
+    socket.removeListener('newListener', onNewListener);
+
+    // Let other listeners to be set up too
+    process.nextTick(function() {
+      self.breakSocket(socket);
+    });
+  });
+
+  return socket;
+};
+
+Agent.prototype.breakSocket = function breakSocket(socket) {
+  socket.emit('error', new Error('Intentional error'));
+};
+
+var agent = new Agent();
+
+http.request({
+  agent: agent
+}).once('error', function() {
+  console.log('ignore');
+});