use psr-7

composer.json

@@ -17,7 +17,8 @@
         "php-http/client-implementation": "^1",
         "php-http/message": "^1.5",
         "php-http/discovery": "^1.14",
-        "symfony/http-foundation": "^6"
+        "symfony/http-foundation": "^6",
+        "guzzlehttp/psr7": "^2.3"
     },
     "require-dev": {
         "php-http/mock-client": "^1",

composer.lock

@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "841c259ae4952442e7eaa53f1410765c",
+    "content-hash": "c176a4d7f47087c07fb8b86b76044123",
     "packages": [
         {
             "name": "clue/stream-filter",

lib/Adapter.php

@@ -4,6 +4,10 @@ declare(strict_types=1);
 
 namespace Payeer;
 
+use Http\Discovery\HttpClientDiscovery;
+use Http\Discovery\Psr17FactoryDiscovery;
+use GuzzleHttp\Psr7\Utils;
+
 class Adapter
 {
     private array $arParams = array();
@@ -19,37 +23,28 @@ class Adapter
 
     protected function request(array $req = array())
     {
+        $client = HttpClientDiscovery::find();
+        $messageFactory = Psr17FactoryDiscovery::findRequestFactory();
         $msec = round(microtime(true) * 1000);
+
         $req['post']['ts'] = $msec;
 
         $post = json_encode($req['post']);
 
         $sign = hash_hmac('sha256', $req['method'] . $post, $this->arParams['key']);
 
-        $ch = curl_init();
-        curl_setopt($ch, CURLOPT_URL, "https://payeer.com/api/trade/" . $req['method']);
+        $request = $messageFactory->createRequest('POST', 'https://payeer.com/api/trade/' . $req['method'])
+         ->withHeader('Content-Type', 'application/json')
+         ->withHeader('API-ID', $this->arParams['id'])
+         ->withHeader('API-SIGN', $sign)
+         ->withBody(Utils::streamFor($post));
 
-        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
-        curl_setopt($ch, CURLOPT_HEADER, false);
-        //curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
+        $response = $client->sendRequest($request);
+        if ($response->getStatusCode() !== 200) {
+            throw new \Exception('Server returned ' . $response->getStatusCode() . ':' . $response->getReasonPhrase());
+        }
 
-        curl_setopt($ch, CURLOPT_POST, true);
-        curl_setopt($ch, CURLOPT_POSTFIELDS, $post);
-
-        curl_setopt(
-            $ch,
-            CURLOPT_HTTPHEADER,
-            array(
-                "Content-Type: application/json",
-                "API-ID: " . $this->arParams['id'],
-                "API-SIGN: " . $sign
-            )
-        );
-
-        $response = curl_exec($ch);
-        curl_close($ch);
-
-        $arResponse = json_decode($response, true);
+        $arResponse = json_decode((string) $response->getBody(), true);
 
         if ($arResponse['success'] !== true) {
             $this->arError = $arResponse['error'];