Fix exception not created from HEAD requests (#1724)

Author: jderusse

CHANGELOG.md

@@ -2,6 +2,10 @@
 
 ## NOT RELEASED
 
+### Added
+
+- Added support for exception based on response http status code only.
+
 ## 1.21.0
 
 ### Added

composer.json

@@ -38,7 +38,7 @@
     },
     "extra": {
         "branch-alias": {
-            "dev-master": "1.21-dev"
+            "dev-master": "1.22-dev"
         }
     }
 }

src/Response.php

@@ -417,6 +417,8 @@ private function defineResolveStatus(): void
 
             if ((null !== $awsCode = ($awsError ? $awsError->getCode() : null)) && isset($this->exceptionMapping[$awsCode])) {
                 $exceptionClass = $this->exceptionMapping[$awsCode];
+            } elseif (isset($this->exceptionMapping['http_status_code_' . $statusCode])) {
+                $exceptionClass = $this->exceptionMapping['http_status_code_' . $statusCode];
             } elseif (500 <= $statusCode) {
                 $exceptionClass = ServerException::class;
             } elseif (400 <= $statusCode) {