Merge pull request #60 from c960657/expect-100

Always suppress "Expect: 100-continue" header

Author: robocoder

lib/WebDriver/Service/CurlService.php

@@ -54,9 +54,12 @@ public function execute($requestMethod, $url, $parameters = null, $extraOptions
                     curl_setopt($curl, CURLOPT_POSTFIELDS, json_encode($parameters));
                 } else {
                     $customHeaders[] = 'Content-Length: 0';
-                    $customHeaders[] = 'Expect:';
                 }
 
+                // Suppress "Expect: 100-continue" header automatically added by cURL that
+                // causes a 1 second delay if the remote server does not support Expect.
+                $customHeaders[] = 'Expect:';
+
                 curl_setopt($curl, CURLOPT_POST, true);
                 break;
 
@@ -69,9 +72,12 @@ public function execute($requestMethod, $url, $parameters = null, $extraOptions
                     curl_setopt($curl, CURLOPT_POSTFIELDS, json_encode($parameters));
                 } else {
                     $customHeaders[] = 'Content-Length: 0';
-                    $customHeaders[] = 'Expect:';
                 }
 
+                // Suppress "Expect: 100-continue" header automatically added by cURL that
+                // causes a 1 second delay if the remote server does not support Expect.
+                $customHeaders[] = 'Expect:';
+
                 curl_setopt($curl, CURLOPT_CUSTOMREQUEST, 'PUT');
                 break;
         }