Fixes #410 - Retrieve title fails in multiple cases

  * `get_http_url()` renamed to `get_http_response()`.
  * Use the same HTTP context to retrieve response headers and content.
  * Follow HTTP 301 and 302 redirections to retrieve the title (default max 3 redirections).
  * Add `LinkUtils` to extract titles and charset.
  * Try to retrieve charset from HTTP headers first (new), then HTML content.
  * Use mb_string to re-encode title if necessary.

1 files changed, 18 insertions, 0 deletions

diff --git a/tests/Url/UrlTest.php b/tests/Url/UrlTest.php
index af6daaa4..425327ed 100644
--- a/tests/Url/UrlTest.php
+++ b/tests/Url/UrlTest.php
@@ -156,4 +156,22 @@ class UrlTest extends PHPUnit_Framework_TestCase
         $this->assertEquals($strOn, add_trailing_slash($strOn));
         $this->assertEquals($strOn, add_trailing_slash($strOff));
     }
+
+    /**
+     * Test valid HTTP url.
+     */
+    function testUrlIsHttp()
+    {
+        $url = new Url(self::$baseUrl);
+        $this->assertTrue($url->isHttp());
+    }
+
+    /**
+     * Test non HTTP url.
+     */
+    function testUrlIsNotHttp()
+    {
+        $url = new Url('ftp://save.tld/mysave');
+        $this->assertFalse($url->isHttp());
+    }
 }