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| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * SPDX-License-Identifier: EUPL-1.2 |
| 5 | * |
| 6 | * This file is part of icap-flow. |
| 7 | * |
| 8 | * Licensed under the EUPL, Version 1.2 only (the "Licence"); |
| 9 | * you may not use this work except in compliance with the Licence. |
| 10 | * You may obtain a copy of the Licence at: |
| 11 | * |
| 12 | * https://joinup.ec.europa.eu/collection/eupl/eupl-text-eupl-12 |
| 13 | * |
| 14 | * Unless required by applicable law or agreed to in writing, software |
| 15 | * distributed under the Licence is distributed on an "AS IS" basis, |
| 16 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 17 | */ |
| 18 | |
| 19 | declare(strict_types=1); |
| 20 | |
| 21 | namespace Ndrstmr\Icap\Transport; |
| 22 | |
| 23 | use Amp\Cancellation; |
| 24 | use Ndrstmr\Icap\Config; |
| 25 | use Ndrstmr\Icap\DTO\IcapResponse; |
| 26 | |
| 27 | /** |
| 28 | * Optional capability of a transport: to receive a response without keeping it. |
| 29 | * |
| 30 | * {@see TransportInterface::request()} returns the whole response as a string, which bounds it by what fits in |
| 31 | * memory. A transport that implements this interface reads the response as it arrives, checks it to its last byte |
| 32 | * and keeps neither its frame nor its body ({@see IcapResponse::$discardedBodyBytes}). The scan helpers use it when |
| 33 | * their caller asks for the body to be discarded ({@see \Ndrstmr\Icap\DiscardingIcapClient}); a transport without it |
| 34 | * is refused there, not asked to buffer. A transport that is also a {@see SessionAwareTransport} opens sessions that |
| 35 | * are {@see DiscardingTransportSession}s. |
| 36 | */ |
| 37 | interface DiscardingTransport extends TransportInterface |
| 38 | { |
| 39 | /** |
| 40 | * Like {@see TransportInterface::request()}, with a response that is not kept. Framing, windows, cancellation and |
| 41 | * the closing of the socket are the same. `$maxResponseBytes` is the budget for the bytes of the whole response in |
| 42 | * place of `Config::getMaxResponseSize()`; a response over it, or an illegal one, fails with an |
| 43 | * {@see \Ndrstmr\Icap\Exception\IcapMalformedResponseException}. The limits for header lines and their number are |
| 44 | * those of the configuration. |
| 45 | * |
| 46 | * @param iterable<string> $rawRequest |
| 47 | * |
| 48 | * @return \Amp\Future<IcapResponse> |
| 49 | */ |
| 50 | public function requestDiscardingBody( |
| 51 | Config $config, |
| 52 | iterable $rawRequest, |
| 53 | int $maxResponseBytes, |
| 54 | ?Cancellation $cancellation = null, |
| 55 | ): \Amp\Future; |
| 56 | } |