Amp\Artax\Client::dequeueNextRequest PHP Method

    private function dequeueNextRequest()
    {
        $cycle = array_shift($this->queue);
        $authority = $this->generateAuthorityFromUri($cycle->uri);
        $socketCheckoutUri = $cycle->uri->getScheme() . "://{$authority}";
        $cycle->socketCheckoutUri = $socketCheckoutUri;
        $futureSocket = $this->socketPool->checkout($socketCheckoutUri, $cycle->options);
        $futureSocket->when(function ($error, $result) use($cycle) {
            $this->onSocketResolve($cycle, $error, $result);
        });
    }