Improvements

* CurlDriver: support check
* StreamDriver: detection of possible errors with fopen+http

Author: brcontainer

src/Drivers/CurlDriver.php

@@ -36,7 +36,7 @@ public function __construct(Proxy $proxy)
      */
     public function support()
     {
-        return true;
+        return function_exists('curl_init');
     }
 
     /**

src/Drivers/StreamDriver.php

@@ -122,6 +122,10 @@ public function exec($url, &$httpStatus, &$contentType, &$errorCode, &$errorMess
             if ($timedOut) {
                 $this->proxy->resetTemporary();
             }
+        } else {
+            $err = error_get_last();
+            $errorCode = $err['type'];
+            $errorMessage = $err['message'];
         }
     }
 }