diff --git a/ApnsPHP/Push.php b/ApnsPHP/Push.php
index 225fd53e..ed9045db 100644
--- a/ApnsPHP/Push.php
+++ b/ApnsPHP/Push.php
@@ -638,6 +638,15 @@ private function httpSend(Message $message, &$reply): bool
             CURLOPT_POSTFIELDS => $message->getPayload()
             ]) && ($reply = curl_exec($this->hSocket)) !== false)
         ) {
+            $errorCode = curl_errno($this->hSocket);
+
+            if ($errorCode > 0) {
+                $this->logger->error('HTTP request error code: {code}; message: {message}.', [
+                    'code' => $errorCode,
+                    'message' => curl_error($this->hSocket),
+                ]);
+            }
+
             return false;
         }
 
diff --git a/ApnsPHP/Tests/PushHttpSendTest.php b/ApnsPHP/Tests/PushHttpSendTest.php
index e5b00304..eecb6c9d 100644
--- a/ApnsPHP/Tests/PushHttpSendTest.php
+++ b/ApnsPHP/Tests/PushHttpSendTest.php
@@ -99,6 +99,14 @@ public function testHttpSendReturnsFalseOnCurlOptsCannotBeSet(): void
             return true;
         });
 
+        $this->mock_function('curl_errno', function () {
+            return 56;
+        });
+
+        $this->mock_function('curl_error', function () {
+            return 'OpenSSL SSL_read: error:14094415:SSL routines:ssl3_read_bytes:sslv3 alert certificate expired';
+        });
+
         $this->set_reflection_property_value('environment', 1);
 
         $this->setHttpHeaders();
diff --git a/ApnsPHP/Tests/PushSendTest.php b/ApnsPHP/Tests/PushSendTest.php
index c7f0368f..99ecd1f0 100644
--- a/ApnsPHP/Tests/PushSendTest.php
+++ b/ApnsPHP/Tests/PushSendTest.php
@@ -69,6 +69,12 @@ public function testSendFailsWithoutRetrying(): void
         $this->mock_function('curl_init', function () {
             return new stdClass();
         });
+        $this->mock_function('curl_errno', function () {
+            return 0;
+        });
+        $this->mock_function('curl_error', function () {
+            return '';
+        });
 
         $error = [
             'command' => 8,
@@ -206,6 +212,12 @@ public function testSendRemovesWhenNoError(): void
         $this->mock_function('curl_close', function () {
             return null;
         });
+        $this->mock_function('curl_errno', function () {
+            return 0;
+        });
+        $this->mock_function('curl_error', function () {
+            return '';
+        });
         $this->mock_function('curl_init', function () {
             return new stdClass();
         });