MAGETWO-64313: [GitHub] [PR] Fix CURL Json POST #3489 #8373

 - added type string to parameter $param in order to support sending JSON or XML requests

Author: Oleksii Korshenko

lib/internal/Magento/Framework/HTTP/Client/Curl.php

@@ -230,16 +230,18 @@ public function get($uri)
     /**
      * Make POST request
      *
+     * String type was added to parameter $param in order to support sending JSON or XML requests.
+     * This feature was added base on Community Pull Request https://github.com/magento/magento2/pull/8373
+     *
      * @param string $uri
-     * @param array $params
-     * @param bool $json
+     * @param array|string $params
      * @return void
      *
      * @see \Magento\Framework\HTTP\Client#post($uri, $params)
      */
-    public function post($uri, $params, $json = false)
+    public function post($uri, $params)
     {
-        $this->makeRequest("POST", $uri, $params, $json = false);
+        $this->makeRequest("POST", $uri, $params);
     }
 
     /**
@@ -336,21 +338,24 @@ public function getStatus()
 
     /**
      * Make request
+     *
+     * String type was added to parameter $param in order to support sending JSON or XML requests.
+     * This feature was added base on Community Pull Request https://github.com/magento/magento2/pull/8373
+     *
      * @param string $method
      * @param string $uri
-     * @param array $params
-     * @param bool $json
+     * @param array|string $params - use $params as a string in case of JSON or XML POST request.
      * @return void
      * @SuppressWarnings(PHPMD.CyclomaticComplexity)
      * @SuppressWarnings(PHPMD.NPathComplexity)
      */
-    protected function makeRequest($method, $uri, $params = [], $json = false)
+    protected function makeRequest($method, $uri, $params = [])
     {
         $this->_ch = curl_init();
         $this->curlOption(CURLOPT_URL, $uri);
         if ($method == 'POST') {
             $this->curlOption(CURLOPT_POST, 1);
-            $this->curlOption(CURLOPT_POSTFIELDS, $json ? json_encode($params) : http_build_query($params));
+            $this->curlOption(CURLOPT_POSTFIELDS, is_array($params) ? http_build_query($params) : $params);
         } elseif ($method == "GET") {
             $this->curlOption(CURLOPT_HTTPGET, 1);
         } else {