From c321e9893d9eabefb125d9e4efa964603fed9dfe Mon Sep 17 00:00:00 2001
From: Ryan Dahl <ry@tinyclouds.org>
Date: Sat, 20 Nov 2010 23:08:45 -0800
Subject: [PATCH] stream.pipe should remove listeners on dest close

---
 lib/stream.js | 25 +++++++++++++++++++------
 1 file changed, 19 insertions(+), 6 deletions(-)

diff --git a/lib/stream.js b/lib/stream.js
index 97f4fa60222..dfe5380adfb 100644
--- a/lib/stream.js
+++ b/lib/stream.js
@@ -10,13 +10,17 @@ exports.Stream = Stream;
 Stream.prototype.pipe = function (dest, options) {
   var source = this;
 
-  source.on("data", function (chunk) {
+  function ondata (chunk) {
     if (false === dest.write(chunk)) source.pause();
-  });
+  }
 
-  dest.on("drain", function () {
+  source.on("data", ondata);
+
+  function ondrain () {
     if (source.readable) source.resume();
-  });
+  }
+
+  dest.on("drain", ondrain);
 
   /*
    * If the 'end' option is not supplied, dest.end() will be called when
@@ -24,11 +28,20 @@ Stream.prototype.pipe = function (dest, options) {
    */
 
   if (!options || options.end !== false) {
-    source.on("end", function () {
+    function onend () {
       dest.end();
-    });
+    }
+
+    source.on("end", onend);
   }
 
+  dest.on('close', function () {
+    dest.removeListener('data', ondata);
+    dest.removeListener('drain', ondrain);
+    dest.removeListener('end', onend);
+  });
+
+
   /*
    * Questionable:
    */