Aerys\Http1Driver::upgradeBodySize PHP Method

    public function upgradeBodySize(InternalRequest $ireq)
    {
        $client = $ireq->client;
        if ($client->bodyPromisors) {
            $client->streamWindow = $ireq->maxBodySize;
            if ($client->parserEmitLock) {
                $client->requestParser->send("");
            }
        }
    }