- Added some more type checking

src/Transport/Curl.php

@@ -10,7 +10,7 @@ class Curl implements TransportInterface {
     
     public $headers = [];
     
-    public function push(string $url, array $data) : ? object
+    public function push(string $url, array $data) : object|null|bool
     {
         $ch = curl_init();
         
@@ -22,7 +22,9 @@ class Curl implements TransportInterface {
         curl_setopt($ch, CURLOPT_TIMEOUT_MS, $this->timeout * 200);
         curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
 
-        if ( ( false === curl_exec($ch) ) && $this->throwErrors ) {
+        $exec = curl_exec($ch);
+
+        if ( ( false === $exec ) && $this->throwErrors ) {
             $errno = curl_errno($ch);
             $errors = array_filter([ curl_error($ch) , static::CURL_ERROR[$errno] ?? null ]);
             
@@ -31,7 +33,7 @@ class Curl implements TransportInterface {
         
         curl_close($ch);
         
-        return null;
+        return $exec;
     }
     
     const CURL_ERROR = [