Simplify Socket constructor

lib/net.js

@@ -356,15 +356,13 @@ function initSocket (self) {
   self.writable = false;
 }
 
-function Socket (peerInfo) {
+function Socket (fd) {
   process.EventEmitter.call(this);
 
-  if (peerInfo) {
+  if (fd) {
     initSocket(this);
 
-    this.fd = peerInfo.fd;
-    this.remoteAddress = peerInfo.remoteAddress;
-    this.remotePort = peerInfo.remotePort;
+    this.fd = fd;
 
     this.resume();
     this.readable = true;
@@ -758,18 +756,20 @@ function Server (listener) {
 
   self.watcher = new IOWatcher();
   self.watcher.host = self;
-  self.watcher.callback = function (readable, writeable) {
+  self.watcher.callback = function () {
     while (self.fd) {
       var peerInfo = accept(self.fd);
       if (!peerInfo) return;
-      var peer = new Socket(peerInfo);
-      peer.type = self.type;
-      peer.server = self;
-      self.emit('connection', peer);
+      var s = new Socket(peerInfo.fd);
+      s.remoteAddress = peerInfo.remoteAddress;
+      s.remotePort = peerInfo.remotePort;
+      s.type = self.type;
+      s.server = self;
+      self.emit('connection', s);
       // The 'connect' event  probably should be removed for server-side
       // sockets. It's redundent.
-      peer.emit('connect'); 
-      timeout.active(peer);
+      s.emit('connect');
+      timeout.active(s);
     }
   };
 }