Here is the deal: I use Symfony and HttpClient in telegram bot. Bot sends various requests to Telegram's API, and most of these I don't really care to get the response in main bot logic (I want to run the code as fast as possible). However, I'd like to add requests and responses to Sentry breadcrumbs for reporting. Adding requests is easy. Adding responses is tricky.

I don't want actually to call Response->getContent(), so that it would stop main logic execution until I get the response. However, I'd like to somehow get notified as soon as response is ready. Then, I'd like to add the response to breadcrumbs, and then if there were errors in responses - send a notification.

I've tried subscribing to on_progress, but that didn't work, since responses were not ready when I tried using them from that callback.

So, I couldn't find anything about some sort of event system, so that I could subscribe and get responses as soon as they get ready. Is it really possible? And if not, then it's a feature request, I guess...