Amp\Artax\Client::enableCrypto PHP Method

    private function enableCrypto(RequestCycle $cycle)
    {
        $cryptoOptions = $this->generateCryptoOptions($cycle);
        $cryptoPromise = socket\cryptoEnable($cycle->socket, $cryptoOptions);
        $cryptoPromise->when(function ($error) use($cycle) {
            if ($error) {
                // If crypto failed we make sure the socket pool gets rid of its reference
                // to this socket connection.
                $this->socketPool->clear($cycle->socket);
                $this->fail($cycle, $error);
            } else {
                $this->onCryptoCompletion($cycle);
            }
        });
    }