Emit 'close' after all connections have closed

Fixes nodejs#1383

lib/net_legacy.js

@@ -826,6 +826,7 @@ Socket.prototype.destroy = function(exception) {
 
   if (this.server && !this.destroyed) {
     this.server.connections--;
+    this.server._emitCloseIfDrained();
   }
 
   // FIXME Bug when this.fd == 0
@@ -1153,13 +1154,18 @@ Server.prototype.close = function() {
 
   if (self.type === 'unix') {
     require('fs').unlink(self.path, function() {
-      self.emit('close');
+      self._emitCloseIfDrained();
     });
   } else {
-    self.emit('close');
+    self._emitCloseIfDrained();
   }
 };
 
+Server.prototype._emitCloseIfDrained = function() {
+  if ((typeof this.fd !== 'number') && !this.connections) {
+    this.emit('close');
+  }
+};
 
 var dummyFD = null;
 var lastEMFILEWarning = 0;

lib/net_uv.js

@@ -214,6 +214,7 @@ Socket.prototype.destroy = function(exception) {
 
   if (this.server && !this.destroyed) {
     this.server.connections--;
+    this.server._emitCloseIfDrained();
   }
 
   debug('close ' + this.fd);
@@ -641,7 +642,13 @@ Server.prototype.close = function() {
 
   this._handle.close();
   this._handle = null;
-  this.emit('close');
+  this._emitCloseIfDrained();
+};
+
+Server.prototype._emitCloseIfDrained = function() {
+  if (!this._handle && !this.connections) {
+    this.emit('close');
+  }
 };
 
 

test/simple/test-net-server-close.js

@@ -0,0 +1,39 @@
+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+var common = require('../common');
+var assert = require('assert');
+var net = require('net');
+
+var server = net.createServer(function(socket) {
+  server.close();
+  process.nextTick(function() {
+    socket.destroy();
+  });
+});
+
+server.listen(common.PORT, function() {
+  net.createConnection(common.PORT);
+});
+
+server.on('close', function() {
+  assert.equal(server.connections, 0);
+});