tcp: make server promise based.

lib/net/pool.js

@@ -368,22 +368,9 @@ Pool.prototype.listen = co(function* listen() {
   if (!this.options.listen)
     return;
 
-  yield this._listen();
+  yield this.server.listen(this.address.port, '0.0.0.0');
 });
 
-/**
- * Listen on server socket.
- * @private
- * @returns {Promise}
- */
-
-Pool.prototype._listen = function _listen() {
-  var self = this;
-  return new Promise(function(resolve, reject) {
-    self.server.listen(self.address.port, '0.0.0.0', co.wrap(resolve, reject));
-  });
-};
-
 /**
  * Stop listening on server socket.
  * @private
@@ -397,22 +384,9 @@ Pool.prototype.unlisten = co(function* unlisten() {
   if (!this.options.listen)
     return;
 
-  yield this._unlisten();
+  yield this.server.close();
 });
 
-/**
- * Unlisten on server socket.
- * @private
- * @returns {Promise}
- */
-
-Pool.prototype._unlisten = function unlisten() {
-  var self = this;
-  return new Promise(function(resolve, reject) {
-    self.server.close(co.wrap(resolve, reject));
-  });
-};
-
 /**
  * Handle incoming connection.
  * @private

lib/net/tcp-browser.js

@@ -16,12 +16,12 @@ tcp.createSocket = function createSocket(port, host, proxy) {
 
 tcp.createServer = function createServer() {
   var server = new EventEmitter();
-  server.listen = function listen(port, host, callback) {
+  server.listen = function listen(port, host) {
-    callback();
     server.emit('listening');
+    return Promise.resolve();
   };
-  server.close = function close(callback) {
+  server.close = function close() {
-    callback();
+    return Promise.resolve();
   };
   server.address = function address() {
     return {

lib/net/tcp.js

@@ -6,6 +6,7 @@
 
 'use strict';
 
+var EventEmitter = require('events').EventEmitter;
 var net = require('net');
 var tcp = exports;
 
@@ -14,5 +15,46 @@ tcp.createSocket = function createSocket(port, host, proxy) {
 };
 
 tcp.createServer = function createServer() {
-  return new net.Server();
+  var server = new net.Server();
+  var ee = new EventEmitter();
+
+  ee.listen = function listen(port, host) {
+    return new Promise(function(resolve, reject) {
+      server.listen(port, host, wrap(resolve, reject));
+    });
+  };
+
+  ee.close = function close() {
+    return new Promise(function(resolve, reject) {
+      server.close(wrap(resolve, reject));
+    });
+  };
+
+  ee.address = function address() {
+    return server.address();
+  };
+
+  server.on('listening', function() {
+    ee.emit('listening');
+  });
+
+  server.on('connection', function(socket) {
+    ee.emit('connection', socket);
+  });
+
+  server.on('error', function(err) {
+    ee.emit('error', err);
+  });
+
+  return ee;
 };
+
+function wrap(resolve, reject) {
+  return function(err, result) {
+    if (err) {
+      reject(err);
+      return;
+    }
+    resolve(result);
+  };
+}