[HttpClient] Improve memory consumption

Author: nicolas-grekas

Response/CurlResponse.php

@@ -126,9 +126,14 @@ public function __construct(
             curl_setopt($ch, \CURLOPT_NOPROGRESS, false);
             curl_setopt($ch, \CURLOPT_PROGRESSFUNCTION, static function ($ch, $dlSize, $dlNow) use ($onProgress, &$info, $url, $multi, $debugBuffer) {
                 try {
+                    $info['debug'] ??= '';
                     rewind($debugBuffer);
-                    $debug = ['debug' => stream_get_contents($debugBuffer)];
-                    $onProgress($dlNow, $dlSize, $url + curl_getinfo($ch) + $info + $debug);
+                    if (fstat($debugBuffer)['size']) {
+                        $info['debug'] .= stream_get_contents($debugBuffer);
+                        rewind($debugBuffer);
+                        ftruncate($debugBuffer, 0);
+                    }
+                    $onProgress($dlNow, $dlSize, $url + curl_getinfo($ch) + $info);
                 } catch (\Throwable $e) {
                     $multi->handlesActivity[(int) $ch][] = null;
                     $multi->handlesActivity[(int) $ch][] = $e;
@@ -209,14 +214,17 @@ public function getInfo(?string $type = null): mixed
                 $info['starttransfer_time'] = 0.0;
             }
 
+            $info['debug'] ??= '';
             rewind($this->debugBuffer);
-            $info['debug'] = stream_get_contents($this->debugBuffer);
+            if (fstat($this->debugBuffer)['size']) {
+                $info['debug'] .= stream_get_contents($this->debugBuffer);
+                rewind($this->debugBuffer);
+                ftruncate($this->debugBuffer, 0);
+            }
             $waitFor = curl_getinfo($this->handle, \CURLINFO_PRIVATE);
 
             if ('H' !== $waitFor[0] && 'C' !== $waitFor[0]) {
                 curl_setopt($this->handle, \CURLOPT_VERBOSE, false);
-                rewind($this->debugBuffer);
-                ftruncate($this->debugBuffer, 0);
                 $this->finalInfo = $info;
             }
         }

TraceableHttpClient.php

@@ -39,7 +39,7 @@ public function request(string $method, string $url, array $options = []): Respo
     {
         $content = null;
         $traceInfo = [];
-        $this->tracedRequests[] = [
+        $tracedRequest = [
             'method' => $method,
             'url' => $url,
             'options' => $options,
@@ -51,7 +51,9 @@ public function request(string $method, string $url, array $options = []): Respo
         if (false === ($options['extra']['trace_content'] ?? true)) {
             unset($content);
             $content = false;
+            unset($tracedRequest['options']['body'], $tracedRequest['options']['json']);
         }
+        $this->tracedRequests[] = $tracedRequest;
 
         $options['on_progress'] = function (int $dlNow, int $dlSize, array $info) use (&$traceInfo, $onProgress) {
             $traceInfo = $info;