bug #31850 [HttpClient] add $response->cancel() (nicolas-grekas)

This PR was merged into the 4.3 branch.

Discussion
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[HttpClient] add $response->cancel()

| Q             | A
| ------------- | ---
| Branch?       | 4.3
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | -
| License       | MIT
| Doc PR        | symfony/symfony-docs#11668

An alternative to #31845 and #31842.
Same as  #31831 but considered as a bug fix (at the Contracts level), thus for 4.3.
I think we're early enough since 4.3/1.1 to do it.
That will save us some headaches in the short term.

Commits
-------

c402418723 [HttpClient] add $response->cancel()

Author: fabpot

Response/ResponseTrait.php

@@ -169,6 +169,15 @@ public function toArray(bool $throw = true): array
         return $content;
     }
 
+    /**
+     * {@inheritdoc}
+     */
+    public function cancel(): void
+    {
+        $this->info['error'] = 'Response has been canceled.';
+        $this->close();
+    }
+
     /**
      * Closes the response and all its network handles.
      */

composer.json

@@ -21,7 +21,7 @@
     "require": {
         "php": "^7.1.3",
         "psr/log": "^1.0",
-        "symfony/http-client-contracts": "^1.1",
+        "symfony/http-client-contracts": "^1.1.3",
         "symfony/polyfill-php73": "^1.11"
     },
     "require-dev": {