| /* |
| * Copyright (C) 2019 Igalia S.L. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS |
| * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF |
| * THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "config.h" |
| #include "AsyncRevalidation.h" |
| |
| #if ENABLE(NETWORK_CACHE_SPECULATIVE_REVALIDATION) |
| #include <WebCore/CacheValidation.h> |
| #include <WebCore/ResourceRequest.h> |
| |
| namespace WebKit { |
| namespace NetworkCache { |
| |
| static inline WebCore::ResourceRequest constructRevalidationRequest(const Key& key, const WebCore::ResourceRequest& request, const Entry& entry) |
| { |
| WebCore::ResourceRequest revalidationRequest = request; |
| if (!key.partition().isEmpty()) |
| revalidationRequest.setCachePartition(key.partition()); |
| ASSERT_WITH_MESSAGE(key.range().isEmpty(), "range is not supported"); |
| |
| revalidationRequest.makeUnconditional(); |
| auto eTag = entry.response().httpHeaderField(WebCore::HTTPHeaderName::ETag); |
| if (!eTag.isEmpty()) |
| revalidationRequest.setHTTPHeaderField(WebCore::HTTPHeaderName::IfNoneMatch, eTag); |
| |
| auto lastModified = entry.response().httpHeaderField(WebCore::HTTPHeaderName::LastModified); |
| if (!lastModified.isEmpty()) |
| revalidationRequest.setHTTPHeaderField(WebCore::HTTPHeaderName::IfModifiedSince, lastModified); |
| |
| revalidationRequest.setPriority(WebCore::ResourceLoadPriority::Low); |
| |
| return revalidationRequest; |
| } |
| |
| void AsyncRevalidation::staleWhileRevalidateEnding() |
| { |
| if (m_completionHandler) |
| m_completionHandler(Result::Timeout); |
| } |
| |
| AsyncRevalidation::AsyncRevalidation(Cache& cache, const GlobalFrameID& frameID, const WebCore::ResourceRequest& request, std::unique_ptr<NetworkCache::Entry>&& entry, CompletionHandler<void(Result)>&& handler) |
| : m_timer(*this, &AsyncRevalidation::staleWhileRevalidateEnding) |
| , m_completionHandler(WTFMove(handler)) |
| { |
| auto key = entry->key(); |
| auto revalidationRequest = constructRevalidationRequest(key, request, *entry.get()); |
| auto age = WebCore::computeCurrentAge(entry->response(), entry->timeStamp()); |
| auto lifetime = WebCore::computeFreshnessLifetimeForHTTPFamily(entry->response(), entry->timeStamp()); |
| auto responseMaxStaleness = entry->response().cacheControlStaleWhileRevalidate(); |
| ASSERT(responseMaxStaleness); |
| m_timer.startOneShot(*responseMaxStaleness + (lifetime - age)); |
| m_load = makeUnique<SpeculativeLoad>(cache, frameID, WTFMove(revalidationRequest), WTFMove(entry), [this, key, revalidationRequest](auto&& revalidatedEntry) { |
| ASSERT(!revalidatedEntry || !revalidatedEntry->needsValidation()); |
| ASSERT(!revalidatedEntry || revalidatedEntry->key() == key); |
| if (m_completionHandler) |
| m_completionHandler(revalidatedEntry ? Result::Success : Result::Failure); |
| }); |
| } |
| |
| } // namespace NetworkCache |
| } // namespace WebKit |
| |
| #endif // ENABLE(NETWORK_CACHE_SPECULATIVE_REVALIDATION) |