Add HEAD request support.

lib/Cake/Network/Http/Client.php

@@ -277,6 +277,20 @@ public function delete($url, $data = [], $options = []) {
 		return $this->_doRequest(Request::METHOD_DELETE, $url, $data, $options);
 	}
 
+/**
+ * Do a HEAD request.
+ *
+ * @param string $url The url or path you want to request.
+ * @param array $data The query string data you want to send.
+ * @param array $options Additional options for the request.
+ * @return Cake\Network\Http\Response
+ */
+	public function head($url, $data = [], $options = []) {
+		$options = $this->_mergeOptions($options);
+		$url = $this->buildUrl($url, $data, $options);
+		return $this->_doRequest(Request::METHOD_HEAD, $url, '', $options);
+	}
+
 /**
  * Helper method for doing non-GET requests.
  *

lib/Cake/Network/Http/Message.php

@@ -34,6 +34,7 @@ class Message {
 	const METHOD_PUT = 'PUT';
 	const METHOD_DELETE = 'DELETE';
 	const METHOD_PATCH = 'PATCH';
+	const METHOD_HEAD = 'HEAD';
 
 /**
  * The array of headers in the response.

lib/Cake/Test/TestCase/Network/Http/ClientTest.php

@@ -444,4 +444,32 @@ public function testCookieStorage() {
 		$http->get('/projects');
 	}
 
+/**
+ * test head request with querystring data
+ *
+ * @return void
+ */
+	public function testHeadQuerystring() {
+		$response = new Response();
+
+		$mock = $this->getMock('Cake\Network\Http\Adapter\Stream', ['send']);
+		$mock->expects($this->once())
+			->method('send')
+			->with($this->logicalAnd(
+				$this->isInstanceOf('Cake\Network\Http\Request'),
+				$this->attributeEqualTo('_method', Request::METHOD_HEAD),
+				$this->attributeEqualTo('_url', 'http://cakephp.org/search?q=hi+there')
+			))
+			->will($this->returnValue([$response]));
+
+		$http = new Client([
+			'host' => 'cakephp.org',
+			'adapter' => $mock
+		]);
+		$result = $http->head('/search', [
+			'q' => 'hi there',
+		]);
+		$this->assertSame($result, $response);
+	}
+
 }