diff --git a/src/pjdietz/WellRESTed/Message.php b/src/pjdietz/WellRESTed/Message.php
index a7264d7..0aad5b1 100644
--- a/src/pjdietz/WellRESTed/Message.php
+++ b/src/pjdietz/WellRESTed/Message.php
@@ -62,6 +62,8 @@ abstract class Message
                 return $this->getBody();
             case 'headers':
                 return $this->getHeaders();
+            case 'headerLines':
+                return $this->getHeaderLines();
             case 'protocol':
                 return $this->getProtocol();
             case 'protocolVersion':
@@ -123,6 +125,20 @@ abstract class Message
         return $this->headers;
     }
 
+    /**
+     * Return an array containing one string for each header as "field: value"
+     *
+     * @return string
+     */
+    public function getHeaderLines()
+    {
+        $lines = array();
+        foreach ($this->headers as $field => $value) {
+            $lines[] = sprintf('%s: %s', $field, $value);
+        }
+        return $lines;
+    }
+
     /**
      * Return the value of a given header, or false if it does not exist.
      *
diff --git a/src/pjdietz/WellRESTed/Request.php b/src/pjdietz/WellRESTed/Request.php
index 801b5a5..ae642c7 100644
--- a/src/pjdietz/WellRESTed/Request.php
+++ b/src/pjdietz/WellRESTed/Request.php
@@ -299,6 +299,9 @@ class Request extends Message
 
         }
 
+        // Add headers.
+        curl_setopt($ch, CURLOPT_HTTPHEADER, $this->headerLines);
+
         // Make the cURL request.
         $result = curl_exec($ch);
 
diff --git a/src/pjdietz/WellRESTed/Response.php b/src/pjdietz/WellRESTed/Response.php
index cd96657..242d062 100644
--- a/src/pjdietz/WellRESTed/Response.php
+++ b/src/pjdietz/WellRESTed/Response.php
@@ -59,13 +59,6 @@ class Response extends Message
         if (!is_null($body)) {
             $this->body = $body;
         }
-
-        if (isset($_SERVER['SERVER_PROTOCOL'])) {
-            $this->protocol = $_SERVER['SERVER_PROTOCOL'];
-        } else {
-            $this->protocol = 'HTTP/1.1';
-        }
-
     }
 
     // -------------------------------------------------------------------------