Working around Guzzle's truncated debug output #47773

Synchro · 2023-07-18T22:55:10Z

Synchro
Jul 18, 2023

When an HTTP exception occurs, Guzzle truncates the response body to 120 characters; yes, 120. For development purposes this is almost completely useless as it often leads to error responses like "validation error in field (truncated...)". There have been many attempts over the years to persuade guzzle to bump this limit or make it configurable. These requests were rejected many times (predicated on "it might fill up logs"), but a way was eventually provided in guzzle 7.2. However, it's not straightforward, and they also refused to write docs for it.

So it's there, but it's hard to get at, and since Laravel uses Guzzle, we are stuck with it if we want to use the otherwise lovely built-in HttpClient. So how can we get at this and expose it in Laravel?

The truncation length can be set in Guzzle's BodySummarizer class, and an instance of that can be passed in when an exception is created through Guzzle's RequestException class, most easily through its create factory method.
This is where I've ground to a halt:. I can't find anywhere in Laravel that uses Guzzle's exceptions, and guzzle has final on everything, so it's hard to make any changes.
The HTTP client has an HttpClientException class that's an empty wrapper around \Exception, and that class is extended in Laravel's own RequestException, which does have some resemblance to Guzzle's one, but it can't extend that because Guzzle's is declared final.

What I was expecting is for Laravel's wrapper to catch a guzzle exception, then transform and rethrow it using its own exception class. No such luck. It's also too late at that point as the message is already truncated by then.

So, it would be lovely to be able to get basic debug info out of the HTTP client but I hadn't planned on a yak shaving expedition.

Can anyone more familiar with HTTP client internals suggest how this might be done?

Meanwhile, I'll continue using the only other route available to solving this ridiculous problem: editing files in /vendor 😱

Answered by Angel5a

Oct 3, 2023

What I was expecting is for Laravel's wrapper to catch a guzzle exception, then transform and rethrow it using its own exception class. No such luck. It's also too late at that point as the message is already truncated by then.

Your assumption is wrong. You have full body response even after exception have been thrown.

Route::get('/',  fn () => response('DEBUG FAIL!' . str_repeat('0123456789', 100) , 503));

 Http::get('http://localhost/')->throw()->text();

   Illuminate\Http\Client\RequestException  HTTP request returned status code 503:
DEBUG FAIL!0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678 (truncated...).

> Http::get…

View full answer

Synchro · 2023-09-12T16:26:37Z

Synchro
Sep 12, 2023
Author

It's nice to know I'm not alone... Here's this problem manifesting on Laravel Envoyer:

0 replies

Angel5a · 2023-10-02T12:18:16Z

Angel5a
Oct 2, 2023

What I was expecting is for Laravel's wrapper to catch a guzzle exception, then transform and rethrow it using its own exception class. No such luck. It's also too late at that point as the message is already truncated by then.

Soory, but... What the problem with calling RequestException::getResponse() to get fully featured response with all the body available?

6 replies

Synchro Oct 2, 2023
Author

Because the body is already truncated by that point. "All the body" is limited by Guzzle's internal truncation.

Angel5a Oct 2, 2023

Wrong. Nothing have been stripped out of original response. Try this:

$client = new \GuzzleHttp\Client();
try {
    $client->request('GET', 'http://localhost/');
} catch (\GuzzleHttp\Exception\ServerException $e) {
    dump($e->getResponse()->getBody()->getContents());
}

Route::get('/', fn () => throw new \Exception("DEBUG FAIL"));

No any 120 limit:

""" // vendor/psy/psysh/src/ExecutionLoopClosure.php(53) : eval()'d code:4
<!DOCTYPE html>\n
<html lang="en" class="auto">\n
<!--\n
Exception: DEBUG FAIL in file /var/www/html/routes/web.php on line 17\n
\n
#0 /var/www/html/vendor/laravel/framework/src/Illuminate/Routing/CallableDispatcher.php(40): Illuminate\Routing\RouteFileRegistrar-&gt;{closure}()\n
#1 /var/www/html/vendor/laravel/framework/src/Illuminate/Routing/Route.php(237): Illuminate\Routing\CallableDispatcher-&gt;dispatch()\n
#2 /var/www/html/vendor/laravel/framework/src/Illuminate/Routing/Route.php(208): Illuminate\Routing\Route-&gt;runCallable()\n
#3 /var/www/html/vendor/laravel/framework/src/Illuminate/Routing/Router.php(799): Illuminate\Routing\Route-&gt;run()\n
#4 /var/www/html/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(141): Illuminate\Routing\Router-&gt;Illuminate\Routing\{closure}()\n
#5 /var/www/html/vendor/laravel/framework/src/Illuminate/Routing/Middleware/SubstituteBindings.php(50): Illuminate\Pipeline\Pipeline-&gt;Illuminate\Pipeline\{closure}()\n
#6 /var/www/html/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(180): Illuminate\Routing\Middleware\SubstituteBindings-&gt;handle()\n
#7 /var/www/html/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/VerifyCsrfToken.php(78): Illuminate\Pipeline\Pipeline-&gt;Illuminate\Pipeline\{closure}()\n
#8 /var/www/html/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(180): Illuminate\Foundation\Http\Middleware\VerifyCsrfToken-&gt;handle()\n
#9 /var/www/html/vendor/laravel/framework/src/Illuminate/View/Middleware/ShareErrorsFromSession.php(49): Illuminate\Pipeline\Pipeline-&gt;Illuminate\Pipeline\{closure}()\n
#10 /var/www/html/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(180): Illuminate\View\Middleware\ShareErrorsFromSession-&gt;handle()\n
#11 /var/www/html/vendor/laravel/framework/src/Illuminate/Session/Middleware/StartSession.php(121): Illuminate\Pipeline\Pipeline-&gt;Illuminate\Pipeline\{closure}()\n
#12 /var/www/html/vendor/laravel/framework/src/Illuminate/Session/Middleware/StartSession.php(64): Illuminate\Session\Middleware\StartSession-&gt;handleStatefulRequest()\n
#13 /var/www/html/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(180): Illuminate\Session\Middleware\StartSession-&gt;handle()\n
#14 /var/www/html/vendor/laravel/framework/src/Illuminate/Cookie/Middleware/AddQueuedCookiesToResponse.php(37): Illuminate\Pipeline\Pipeline-&gt;Illuminate\Pipeline\{closure}()\n
#15 /var/www/html/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(180): Illuminate\Cookie\Middleware\AddQueuedCookiesToResponse-&gt;handle()\n
#16 /var/www/html/vendor/laravel/framework/src/Illuminate/Cookie/Middleware/EncryptCookies.php(67): Illuminate\Pipeline\Pipeline-&gt;Illuminate\Pipeline\{closure}()\n
#17 /var/www/html/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(180): Illuminate\Cookie\Middleware\EncryptCookies-&gt;handle()\n
#18 /var/www/html/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(116): Illuminate\Pipeline\Pipeline-&gt;Illuminate\Pipeline\{closure}()\n
#19 /var/www/html/vendor/laravel/framework/src/Illuminate/Routing/Router.php(798): Illuminate\Pipeline\Pipeline-&gt;then()\n
#20 /var/www/html/vendor/laravel/framework/src/Illuminate/Routing/Router.php(777): Illuminate\Routing\Router-&gt;runRouteWithinStack()\n
#21 /var/www/html/vendor/laravel/framework/src/Illuminate/Routing/Router.php(741): Illuminate\Routing\Router-&gt;runRoute()\n
#22 /var/www/html/vendor/laravel/framework/src/Illuminate/Routing/Router.php(730): Illuminate\Routing\Router-&gt;dispatchToRoute()\n
#23 /var/www/html/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(200): Illuminate\Routing\Router-&gt;dispatch()\n
#24 /var/www/html/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(141): Illuminate\Foundation\Http\Kernel-&gt;Illuminate\Foundation\Http\{closure}()\n
#25 /var/www/html/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/TransformsRequest.php(21): Illuminate\Pipeline\Pipeline-&gt;Illuminate\Pipeline\{closure}()\n
#26 /var/www/html/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/ConvertEmptyStringsToNull.php(31): Illuminate\Foundation\Http\Middleware\TransformsRequest-&gt;handle()\n
#27 /var/www/html/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(180): Illuminate\Foundation\Http\Middleware\ConvertEmptyStringsToNull-&gt;handle()\n
#28 /var/www/html/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/TransformsRequest.php(21): Illuminate\Pipeline\Pipeline-&gt;Illuminate\Pipeline\{closure}()\n
#29 /var/www/html/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/TrimStrings.php(40): Illuminate\Foundation\Http\Middleware\TransformsRequest-&gt;handle()\n
#30 /var/www/html/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(180): Illuminate\Foundation\Http\Middleware\TrimStrings-&gt;handle()\n
#31 /var/www/html/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/ValidatePostSize.php(27): Illuminate\Pipeline\Pipeline-&gt;Illuminate\Pipeline\{closure}()\n
#32 /var/www/html/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(180): Illuminate\Foundation\Http\Middleware\ValidatePostSize-&gt;handle()\n
#33 /var/www/html/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/PreventRequestsDuringMaintenance.php(89): Illuminate\Pipeline\Pipeline-&gt;Illuminate\Pipeline\{closure}()\n
#34 /var/www/html/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(180): Illuminate\Foundation\Http\Middleware\PreventRequestsDuringMaintenance-&gt;handle()\n
#35 /var/www/html/vendor/laravel/framework/src/Illuminate/Http/Middleware/HandleCors.php(49): Illuminate\Pipeline\Pipeline-&gt;Illuminate\Pipeline\{closure}()\n
#36 /var/www/html/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(180): Illuminate\Http\Middleware\HandleCors-&gt;handle()\n
#37 /var/www/html/vendor/laravel/framework/src/Illuminate/Http/Middleware/TrustProxies.php(39): Illuminate\Pipeline\Pipeline-&gt;Illuminate\Pipeline\{closure}()\n
#38 /var/www/html/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(180): Illuminate\Http\Middleware\TrustProxies-&gt;handle()\n
#39 /var/www/html/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(116): Illuminate\Pipeline\Pipeline-&gt;Illuminate\Pipeline\{closure}()\n
#40 /var/www/html/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(175): Illuminate\Pipeline\Pipeline-&gt;then()\n
#41 /var/www/html/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(144): Illuminate\Foundation\Http\Kernel-&gt;sendRequestThroughRouter()\n
#42 /var/www/html/public/index.php(51): Illuminate\Foundation\Http\Kernel-&gt;handle()\n
#43 /var/www/html/vendor/laravel/framework/src/Illuminate/Foundation/resources/server.php(16): require_once(&#039;...&#039;)\n
#44 {main}\n
-->\n
// ... and way much more output - all the response is here.

Synchro Oct 2, 2023
Author

You're using guzzle directly, not via Laravel's Http client wrapper, which is what I asked about?

Angel5a Oct 3, 2023

What I was expecting is for Laravel's wrapper to catch a guzzle exception, then transform and rethrow it using its own exception class. No such luck. It's also too late at that point as the message is already truncated by then.

Your assumption is wrong. You have full body response even after exception have been thrown.

Route::get('/',  fn () => response('DEBUG FAIL!' . str_repeat('0123456789', 100) , 503));

 Http::get('http://localhost/')->throw()->text();

   Illuminate\Http\Client\RequestException  HTTP request returned status code 503:
DEBUG FAIL!0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678 (truncated...).

> Http::get('http://localhost/')->throw(fn ($r, $e) => throw new \Exception($e->response->getBody()->getContents()))->text();

   Exception  DEBUG FAIL!0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789.

> try { Http::get('http://localhost/')->throw()->text(); } catch (\Illuminate\Http\Client\RequestException $e) { dump($e->response->getBody()->getContents()); }
"DEBUG FAIL!0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789" // vendor/psy/psysh/src/ExecutionLoopClosure.php(53) : eval()'d code:4

Plus Http Client Macros.

You can do whatever you want to do, if you really want to do it. But if you don't want to think by yourself, I can't help anymore.

Answer selected by Synchro

Synchro Oct 3, 2023
Author

This is helpful, thank you, but you could have said the same things without being rude and condescending.

Angel5a Oct 4, 2023

Sorry for that.

Jamesking56 · 2025-02-07T10:08:49Z

Jamesking56
Feb 7, 2025

Anyone coming here from Google like I did, you can now disable truncating by adding this one line to your AppServiceProvider:

RequestException::dontTruncate();

0 replies

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Working around Guzzle's truncated debug output #47773

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