diff --git a/.travis.yml b/.travis.yml
index 73568f23..c6be9817 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,10 +1,7 @@
 language: node_js
 node_js:
   - "0.10"
-  - "0.11"
-matrix:
-  allow_failures:
-    - node_js: "0.11"
-  fast_finish: true
+  - "0.12"
+sudo: false
 script: "npm run-script test-travis"
 after_script: "npm install coveralls@2.10.0 && cat ./coverage/lcov.info | coveralls"
diff --git a/History.md b/History.md
index 6184768c..88cf92df 100644
--- a/History.md
+++ b/History.md
@@ -1,3 +1,16 @@
+unreleased
+==========
+
+  * Fix `"trust proxy"` setting to inherit when app is mounted
+  * Generate `ETag`s for all request responses
+    - No longer restricted to only responses for `GET` and `HEAD` requests
+  * Use `content-type` to parse `Content-Type` headers
+  * deps: cookie-signature@1.0.6
+  * deps: send@0.12.1
+    - Always read the stat size from the file
+    - Fix mutating passed-in `options`
+    - deps: mime@1.3.4
+
 4.11.2 / 2015-02-01
 ===================
 
@@ -678,6 +691,34 @@
    - `app.route()` - Proxy to the app's `Router#route()` method to create a new route
    - Router & Route - public API
 
+3.20.0 / 2015-02-18
+===================
+
+  * Fix `"trust proxy"` setting to inherit when app is mounted
+  * Generate `ETag`s for all request responses
+    - No longer restricted to only responses for `GET` and `HEAD` requests
+  * Use `content-type` to parse `Content-Type` headers
+  * deps: connect@2.29.0
+    - Use `content-type` to parse `Content-Type` headers
+    - deps: body-parser@~1.12.0
+    - deps: compression@~1.4.1
+    - deps: connect-timeout@~1.6.0
+    - deps: cookie-parser@~1.3.4
+    - deps: cookie-signature@1.0.6
+    - deps: csurf@~1.7.0
+    - deps: errorhandler@~1.3.4
+    - deps: express-session@~1.10.3
+    - deps: http-errors@~1.3.1
+    - deps: response-time@~2.3.0
+    - deps: serve-index@~1.6.2
+    - deps: serve-static@~1.9.1
+    - deps: type-is@~1.6.0
+  * deps: cookie-signature@1.0.6
+  * deps: send@0.12.1
+    - Always read the stat size from the file
+    - Fix mutating passed-in `options`
+    - deps: mime@1.3.4
+
 3.19.2 / 2015-02-01
 ===================
 
diff --git a/LICENSE b/LICENSE
index 0f3c7678..aa927e44 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,6 +1,8 @@
 (The MIT License)
 
 Copyright (c) 2009-2014 TJ Holowaychuk <tj@vision-media.ca>
+Copyright (c) 2013-2014 Roman Shtylman <shtylman+expressjs@gmail.com>
+Copyright (c) 2014-2015 Douglas Christopher Wilson <doug@somethingdoug.com>
 
 Permission is hereby granted, free of charge, to any person obtaining
 a copy of this software and associated documentation files (the
diff --git a/lib/application.js b/lib/application.js
index dc18fe37..5ec44248 100644
--- a/lib/application.js
+++ b/lib/application.js
@@ -1,5 +1,14 @@
+/*!
+ * express
+ * Copyright(c) 2009-2013 TJ Holowaychuk
+ * Copyright(c) 2013 Roman Shtylman
+ * Copyright(c) 2014-2015 Douglas Christopher Wilson
+ * MIT Licensed
+ */
+
 /**
  * Module dependencies.
+ * @api private
  */
 
 var finalhandler = require('finalhandler');
@@ -25,6 +34,13 @@ var slice = Array.prototype.slice;
 
 var app = exports = module.exports = {};
 
+/**
+ * Variable for trust proxy inheritance back-compat
+ * @api private
+ */
+
+var trustProxyDefaultSymbol = '@@symbol:trust_proxy_default';
+
 /**
  * Initialize the server.
  *
@@ -58,10 +74,23 @@ app.defaultConfiguration = function(){
   this.set('subdomain offset', 2);
   this.set('trust proxy', false);
 
+  // trust proxy inherit back-compat
+  Object.defineProperty(this.settings, trustProxyDefaultSymbol, {
+    configurable: true,
+    value: true
+  });
+
   debug('booting in %s mode', env);
 
-  // inherit protos
-  this.on('mount', function(parent){
+  this.on('mount', function onmount(parent) {
+    // inherit trust proxy
+    if (this.settings[trustProxyDefaultSymbol] === true
+      && typeof parent.settings['trust proxy fn'] === 'function') {
+      delete this.settings['trust proxy'];
+      delete this.settings['trust proxy fn'];
+    }
+
+    // inherit protos
     this.request.__proto__ = parent.request;
     this.response.__proto__ = parent.response;
     this.engines.__proto__ = parent.engines;
@@ -327,6 +356,13 @@ app.set = function(setting, val){
     case 'trust proxy':
       debug('compile trust proxy %s', val);
       this.set('trust proxy fn', compileTrust(val));
+
+      // trust proxy inherit back-compat
+      Object.defineProperty(this.settings, trustProxyDefaultSymbol, {
+        configurable: true,
+        value: false
+      });
+
       break;
   }
 
diff --git a/lib/response.js b/lib/response.js
index 14aa9cab..d3759713 100644
--- a/lib/response.js
+++ b/lib/response.js
@@ -1,5 +1,13 @@
+/*!
+ * express
+ * Copyright(c) 2009-2013 TJ Holowaychuk
+ * Copyright(c) 2014-2015 Douglas Christopher Wilson
+ * MIT Licensed
+ */
+
 /**
  * Module dependencies.
+ * @api private
  */
 
 var contentDisposition = require('content-disposition');
@@ -159,15 +167,12 @@ res.send = function send(body) {
     this.set('Content-Length', len);
   }
 
-  // method check
-  var isHead = req.method === 'HEAD';
-
-  // ETag support
-  if (len !== undefined && (isHead || req.method === 'GET')) {
-    var etag = app.get('etag fn');
-    if (etag && !this.get('ETag')) {
-      etag = etag(chunk, encoding);
-      etag && this.set('ETag', etag);
+  // populate ETag
+  var etag;
+  var generateETag = len !== undefined && app.get('etag fn');
+  if (typeof generateETag === 'function' && !this.get('ETag')) {
+    if ((etag = generateETag(chunk, encoding))) {
+      this.set('ETag', etag);
     }
   }
 
@@ -182,7 +187,7 @@ res.send = function send(body) {
     chunk = '';
   }
 
-  if (isHead) {
+  if (req.method === 'HEAD') {
     // skip body for HEAD
     this.end();
   } else {
diff --git a/lib/utils.js b/lib/utils.js
index 9c004cc7..ce53ad8b 100644
--- a/lib/utils.js
+++ b/lib/utils.js
@@ -1,8 +1,17 @@
+/*!
+ * express
+ * Copyright(c) 2009-2013 TJ Holowaychuk
+ * Copyright(c) 2014-2015 Douglas Christopher Wilson
+ * MIT Licensed
+ */
+
 /**
  * Module dependencies.
+ * @api private
  */
 
 var contentDisposition = require('content-disposition');
+var contentType = require('content-type');
 var deprecate = require('depd')('express');
 var mime = require('send').mime;
 var basename = require('path').basename;
@@ -10,7 +19,6 @@ var etag = require('etag');
 var proxyaddr = require('proxy-addr');
 var qs = require('qs');
 var querystring = require('querystring');
-var typer = require('media-typer');
 
 /**
  * Return strong ETag for `body`.
@@ -258,17 +266,19 @@ exports.compileTrust = function(val) {
  * @api private
  */
 
-exports.setCharset = function(type, charset){
-  if (!type || !charset) return type;
+exports.setCharset = function setCharset(type, charset) {
+  if (!type || !charset) {
+    return type;
+  }
 
   // parse type
-  var parsed = typer.parse(type);
+  var parsed = contentType.parse(type);
 
   // set charset
   parsed.parameters.charset = charset;
 
   // format type
-  return typer.format(parsed);
+  return contentType.format(parsed);
 };
 
 /**
diff --git a/package.json b/package.json
index 7179ee7b..6ced2f3c 100644
--- a/package.json
+++ b/package.json
@@ -29,14 +29,14 @@
   "dependencies": {
     "accepts": "~1.2.3",
     "content-disposition": "0.5.0",
-    "cookie-signature": "1.0.5",
+    "content-type": "~1.0.1",
+    "cookie-signature": "1.0.6",
     "debug": "~2.1.1",
     "depd": "~1.0.0",
     "escape-html": "1.0.1",
     "etag": "~1.5.1",
     "finalhandler": "0.3.3",
     "fresh": "0.2.4",
-    "media-typer": "0.3.0",
     "methods": "~1.1.1",
     "on-finished": "~2.2.0",
     "parseurl": "~1.3.0",
@@ -44,7 +44,7 @@
     "proxy-addr": "~1.0.6",
     "qs": "2.3.3",
     "range-parser": "~1.0.2",
-    "send": "0.11.1",
+    "send": "0.12.1",
     "serve-static": "~1.8.1",
     "type-is": "~1.5.6",
     "vary": "~1.0.0",
@@ -58,7 +58,7 @@
     "istanbul": "0.3.5",
     "marked": "0.3.3",
     "mocha": "~2.1.0",
-    "should": "~4.6.2",
+    "should": "~5.0.0",
     "supertest": "~0.15.0",
     "hjs": "~0.0.6",
     "body-parser": "~1.11.0",
diff --git a/test/config.js b/test/config.js
index 59d38f07..e298e76a 100644
--- a/test/config.js
+++ b/test/config.js
@@ -1,30 +1,36 @@
 
-var express = require('../')
-  , assert = require('assert');
+var assert = require('assert');
+var express = require('..');
 
-describe('config', function(){
-  describe('.set()', function(){
-    it('should set a value', function(){
+describe('config', function () {
+  describe('.set()', function () {
+    it('should set a value', function () {
       var app = express();
-      app.set('foo', 'bar').should.equal(app);
+      app.set('foo', 'bar');
+      assert.equal(app.get('foo'), 'bar');
     })
 
-    it('should return the app when undefined', function(){
+    it('should return the app', function () {
       var app = express();
-      app.set('foo', undefined).should.equal(app);
+      assert.equal(app.set('foo', 'bar'), app);
+    })
+
+    it('should return the app when undefined', function () {
+      var app = express();
+      assert.equal(app.set('foo', undefined), app);
     })
 
     describe('"etag"', function(){
       it('should throw on bad value', function(){
-        var app = express()
-        app.set.bind(app, 'etag', 42).should.throw(/unknown value/)
+        var app = express();
+        assert.throws(app.set.bind(app, 'etag', 42), /unknown value/);
       })
 
       it('should set "etag fn"', function(){
         var app = express()
         var fn = function(){}
         app.set('etag', fn)
-        app.get('etag fn').should.equal(fn)
+        assert.equal(app.get('etag fn'), fn)
       })
     })
 
@@ -33,7 +39,7 @@ describe('config', function(){
         var app = express()
         var fn = function(){}
         app.set('trust proxy', fn)
-        app.get('trust proxy fn').should.equal(fn)
+        assert.equal(app.get('trust proxy fn'), fn)
       })
     })
   })
@@ -41,34 +47,73 @@ describe('config', function(){
   describe('.get()', function(){
     it('should return undefined when unset', function(){
       var app = express();
-      assert(undefined === app.get('foo'));
+      assert.strictEqual(app.get('foo'), undefined);
     })
     
     it('should otherwise return the value', function(){
       var app = express();
       app.set('foo', 'bar');
-      app.get('foo').should.equal('bar');
+      assert.equal(app.get('foo'), 'bar');
     })
 
     describe('when mounted', function(){
       it('should default to the parent app', function(){
-        var app = express()
-          , blog = express();
+        var app = express();
+        var blog = express();
 
         app.set('title', 'Express');
         app.use(blog);
-        blog.get('title').should.equal('Express');
+        assert.equal(blog.get('title'), 'Express');
       })
-      
+
       it('should given precedence to the child', function(){
-        var app = express()
-          , blog = express();
+        var app = express();
+        var blog = express();
 
         app.use(blog);
         app.set('title', 'Express');
         blog.set('title', 'Some Blog');
 
-        blog.get('title').should.equal('Some Blog');
+        assert.equal(blog.get('title'), 'Some Blog');
+      })
+
+      it('should inherit "trust proxy" setting', function () {
+        var app = express();
+        var blog = express();
+
+        function fn() { return false }
+
+        app.set('trust proxy', fn);
+        assert.equal(app.get('trust proxy'), fn);
+        assert.equal(app.get('trust proxy fn'), fn);
+
+        app.use(blog);
+
+        assert.equal(blog.get('trust proxy'), fn);
+        assert.equal(blog.get('trust proxy fn'), fn);
+      })
+
+      it('should prefer child "trust proxy" setting', function () {
+        var app = express();
+        var blog = express();
+
+        function fn1() { return false }
+        function fn2() { return true }
+
+        app.set('trust proxy', fn1);
+        assert.equal(app.get('trust proxy'), fn1);
+        assert.equal(app.get('trust proxy fn'), fn1);
+
+        blog.set('trust proxy', fn2);
+        assert.equal(blog.get('trust proxy'), fn2);
+        assert.equal(blog.get('trust proxy fn'), fn2);
+
+        app.use(blog);
+
+        assert.equal(app.get('trust proxy'), fn1);
+        assert.equal(app.get('trust proxy fn'), fn1);
+        assert.equal(blog.get('trust proxy'), fn2);
+        assert.equal(blog.get('trust proxy fn'), fn2);
       })
     })
   })
@@ -76,42 +121,42 @@ describe('config', function(){
   describe('.enable()', function(){
     it('should set the value to true', function(){
       var app = express();
-      app.enable('tobi').should.equal(app);
-      app.get('tobi').should.be.true;
+      assert.equal(app.enable('tobi'), app);
+      assert.strictEqual(app.get('tobi'), true);
     })
   })
   
   describe('.disable()', function(){
     it('should set the value to false', function(){
       var app = express();
-      app.disable('tobi').should.equal(app);
-      app.get('tobi').should.be.false;
+      assert.equal(app.disable('tobi'), app);
+      assert.strictEqual(app.get('tobi'), false);
     })
   })
   
   describe('.enabled()', function(){
     it('should default to false', function(){
       var app = express();
-      app.enabled('foo').should.be.false;
+      assert.strictEqual(app.enabled('foo'), false);
     })
     
     it('should return true when set', function(){
       var app = express();
       app.set('foo', 'bar');
-      app.enabled('foo').should.be.true;
+      assert.strictEqual(app.enabled('foo'), true);
     })
   })
   
   describe('.disabled()', function(){
     it('should default to true', function(){
       var app = express();
-      app.disabled('foo').should.be.true;
+      assert.strictEqual(app.disabled('foo'), true);
     })
     
     it('should return false when set', function(){
       var app = express();
       app.set('foo', 'bar');
-      app.disabled('foo').should.be.false;
+      assert.strictEqual(app.disabled('foo'), false);
     })
   })
 })
diff --git a/test/req.ip.js b/test/req.ip.js
index 19d0fee1..3ca575e1 100644
--- a/test/req.ip.js
+++ b/test/req.ip.js
@@ -35,6 +35,23 @@ describe('req', function(){
           .set('X-Forwarded-For', 'client, p1, p2')
           .expect('p1', done);
         })
+
+        it('should return the addr after trusted proxy, from sub app', function (done) {
+          var app = express();
+          var sub = express();
+
+          app.set('trust proxy', 2);
+          app.use(sub);
+
+          sub.use(function (req, res, next) {
+            res.send(req.ip);
+          });
+
+          request(app)
+          .get('/')
+          .set('X-Forwarded-For', 'client, p1, p2')
+          .expect(200, 'p1', done);
+        })
       })
 
       describe('when "trust proxy" is disabled', function(){
diff --git a/test/res.send.js b/test/res.send.js
index 6148e002..6c1361b5 100644
--- a/test/res.send.js
+++ b/test/res.send.js
@@ -1,7 +1,8 @@
 
-var express = require('../')
-  , request = require('supertest')
-  , assert = require('assert');
+var assert = require('assert');
+var express = require('..');
+var methods = require('methods');
+var request = require('supertest');
 
 describe('res', function(){
   describe('.send(null)', function(){
@@ -114,10 +115,10 @@ describe('res', function(){
       })
     })
 
-    it('should set ETag', function(done){
+    it('should set ETag', function (done) {
       var app = express();
 
-      app.use(function(req, res){
+      app.use(function (req, res) {
         var str = Array(1000).join('-');
         res.send(str);
       });
@@ -125,24 +126,7 @@ describe('res', function(){
       request(app)
       .get('/')
       .expect('ETag', 'W/"3e7-8084ccd1"')
-      .end(done);
-    })
-
-    it('should not set ETag for non-GET/HEAD', function(done){
-      var app = express();
-
-      app.use(function(req, res){
-        var str = Array(1000).join('-');
-        res.send(str);
-      });
-
-      request(app)
-      .post('/')
-      .end(function(err, res){
-        if (err) return done(err);
-        assert(!res.header.etag, 'has an ETag');
-        done();
-      });
+      .expect(200, done);
     })
 
     it('should not override Content-Type', function(done){
@@ -203,10 +187,10 @@ describe('res', function(){
       })
     })
 
-    it('should set ETag', function(done){
+    it('should set ETag', function (done) {
       var app = express();
 
-      app.use(function(req, res){
+      app.use(function (req, res) {
         var str = Array(1000).join('-');
         res.send(new Buffer(str));
       });
@@ -214,7 +198,7 @@ describe('res', function(){
       request(app)
       .get('/')
       .expect('ETag', 'W/"3e7-8084ccd1"')
-      .end(done);
+      .expect(200, done);
     })
 
     it('should not override Content-Type', function(done){
@@ -364,12 +348,12 @@ describe('res', function(){
     .expect('{"foo":"bar"}', done);
   })
 
-  describe('"etag" setting', function(){
-    describe('when enabled', function(){
-      it('should send ETag', function(done){
+  describe('"etag" setting', function () {
+    describe('when enabled', function () {
+      it('should send ETag', function (done) {
         var app = express();
 
-        app.use(function(req, res){
+        app.use(function (req, res) {
           res.send('kajdslfkasdf');
         });
 
@@ -377,76 +361,95 @@ describe('res', function(){
 
         request(app)
         .get('/')
-        .expect('etag', 'W/"c-5aee35d8"', done)
-      })
-
-      it('should send ETag for empty string response', function(done){
-        var app = express()
-
-        app.use(function(req, res){
-          res.send('')
-        });
-
-        app.enable('etag')
-
-        request(app)
-        .get('/')
-        .expect('etag', 'W/"0-0"', done)
-      })
-
-      it('should send ETag for long response', function(done){
-        var app = express();
-
-        app.use(function(req, res){
-          var str = Array(1000).join('-');
-          res.send(str);
-        });
-
-        app.enable('etag');
-
-        request(app)
-        .get('/')
-        .expect('etag', 'W/"3e7-8084ccd1"', done)
+        .expect('ETag', 'W/"c-5aee35d8"')
+        .expect(200, done);
       });
 
-      it('should not override ETag when manually set', function(done){
-        var app = express();
+      methods.forEach(function (method) {
+        if (method === 'connect') return;
 
-        app.use(function(req, res){
-          res.set('etag', '"asdf"');
-          res.send(200);
-        });
+        it('should send ETag in response to ' + method.toUpperCase() + ' request', function (done) {
+          var app = express();
 
-        app.enable('etag');
+          app[method]('/', function (req, res) {
+            res.send('kajdslfkasdf');
+          });
 
-        request(app)
-        .get('/')
-        .expect('etag', '"asdf"', done)
-      });
-
-      it('should not send ETag for res.send()', function(done){
-        var app = express()
-
-        app.use(function(req, res){
-          res.send()
-        });
-
-        app.enable('etag')
-
-        request(app)
-        .get('/')
-        .end(function(err, res){
-          res.headers.should.not.have.property('etag');
-          done();
+          request(app)
+          [method]('/')
+          .expect('ETag', 'W/"c-5aee35d8"')
+          .expect(200, done);
         })
+      });
+
+      it('should send ETag for empty string response', function (done) {
+        var app = express();
+
+        app.use(function (req, res) {
+          res.send('');
+        });
+
+        app.enable('etag');
+
+        request(app)
+        .get('/')
+        .expect('ETag', 'W/"0-0"')
+        .expect(200, done);
+      })
+
+      it('should send ETag for long response', function (done) {
+        var app = express();
+
+        app.use(function (req, res) {
+          var str = Array(1000).join('-');
+          res.send(str);
+        });
+
+        app.enable('etag');
+
+        request(app)
+        .get('/')
+        .expect('ETag', 'W/"3e7-8084ccd1"')
+        .expect(200, done);
+      });
+
+      it('should not override ETag when manually set', function (done) {
+        var app = express();
+
+        app.use(function (req, res) {
+          res.set('etag', '"asdf"');
+          res.send(200);
+        });
+
+        app.enable('etag');
+
+        request(app)
+        .get('/')
+        .expect('ETag', '"asdf"')
+        .expect(200, done);
+      });
+
+      it('should not send ETag for res.send()', function (done) {
+        var app = express();
+
+        app.use(function (req, res) {
+          res.send();
+        });
+
+        app.enable('etag');
+
+        request(app)
+        .get('/')
+        .expect(shouldNotHaveHeader('ETag'))
+        .expect(200, done);
       })
     });
 
-    describe('when disabled', function(){
-      it('should send no ETag', function(done){
+    describe('when disabled', function () {
+      it('should send no ETag', function (done) {
         var app = express();
 
-        app.use(function(req, res){
+        app.use(function (req, res) {
           var str = Array(1000).join('-');
           res.send(str);
         });
@@ -455,99 +458,105 @@ describe('res', function(){
 
         request(app)
         .get('/')
-        .end(function(err, res){
-          res.headers.should.not.have.property('etag');
-          done();
-        });
+        .expect(shouldNotHaveHeader('ETag'))
+        .expect(200, done);
       });
 
-      it('should send ETag when manually set', function(done){
+      it('should send ETag when manually set', function (done) {
         var app = express();
 
         app.disable('etag');
 
-        app.use(function(req, res){
+        app.use(function (req, res) {
           res.set('etag', '"asdf"');
           res.send(200);
         });
 
         request(app)
         .get('/')
-        .expect('etag', '"asdf"', done)
+        .expect('ETag', '"asdf"')
+        .expect(200, done);
       });
     });
 
-    describe('when "strong"', function(){
-      it('should send strong ETag', function(done){
-        var app = express()
+    describe('when "strong"', function () {
+      it('should send strong ETag', function (done) {
+        var app = express();
 
         app.set('etag', 'strong');
 
-        app.use(function(req, res){
+        app.use(function (req, res) {
           res.send('hello, world!');
         });
 
         request(app)
         .get('/')
-        .expect('etag', '"Otu60XkfuuPskIiUxJY4cA=="', done)
+        .expect('ETag', '"Otu60XkfuuPskIiUxJY4cA=="')
+        .expect(200, done);
       })
     })
 
-    describe('when "weak"', function(){
-      it('should send weak ETag', function(done){
-        var app = express()
+    describe('when "weak"', function () {
+      it('should send weak ETag', function (done) {
+        var app = express();
 
         app.set('etag', 'weak');
 
-        app.use(function(req, res){
+        app.use(function (req, res) {
           res.send('hello, world!');
         });
 
         request(app)
         .get('/')
-        .expect('etag', 'W/"d-58988d13"', done)
+        .expect('ETag', 'W/"d-58988d13"')
+        .expect(200, done)
       })
     })
 
-    describe('when a function', function(){
-      it('should send custom ETag', function(done){
-        var app = express()
+    describe('when a function', function () {
+      it('should send custom ETag', function (done) {
+        var app = express();
 
-        app.set('etag', function(body, encoding){
+        app.set('etag', function (body, encoding) {
           var chunk = !Buffer.isBuffer(body)
             ? new Buffer(body, encoding)
             : body;
-          chunk.toString().should.equal('hello, world!')
-          return '"custom"'
+          chunk.toString().should.equal('hello, world!');
+          return '"custom"';
         });
 
-        app.use(function(req, res){
+        app.use(function (req, res) {
           res.send('hello, world!');
         });
 
         request(app)
         .get('/')
-        .expect('etag', '"custom"', done)
+        .expect('ETag', '"custom"')
+        .expect(200, done);
       })
 
-      it('should not send falsy ETag', function(done){
-        var app = express()
+      it('should not send falsy ETag', function (done) {
+        var app = express();
 
-        app.set('etag', function(body, encoding){
-          return undefined
+        app.set('etag', function (body, encoding) {
+          return undefined;
         });
 
-        app.use(function(req, res){
+        app.use(function (req, res) {
           res.send('hello, world!');
         });
 
         request(app)
         .get('/')
-        .end(function(err, res){
-          res.headers.should.not.have.property('etag')
-          done();
-        })
+        .expect(shouldNotHaveHeader('ETag'))
+        .expect(200, done);
       })
     })
   })
 })
+
+function shouldNotHaveHeader(header) {
+  return function (res) {
+    assert.ok(!(header.toLowerCase() in res.headers), 'should not have header ' + header)
+  }
+}