44 lines
1.2 KiB
PHP
44 lines
1.2 KiB
PHP
<?php namespace App\Http\Middleware;
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/**
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* Copyright 2015 OpenStack Foundation
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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* http://www.apache.org/licenses/LICENSE-2.0
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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**/
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use Closure;
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use Illuminate\Contracts\Routing\Middleware;
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class ETagsMiddleware implements Middleware
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{
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/**
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* Handle an incoming request.
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*
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* @param \Illuminate\Http\Request $request
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* @param \Closure $next
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* @return mixed
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*/
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public function handle($request, Closure $next)
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{
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$response = $next($request);
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if ($response->getStatusCode() === 200)
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{
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$etag = md5($response->getContent());
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$requestETag = str_replace('"', '', $request->getETags());
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if ($requestETag && $requestETag[0] == $etag)
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{
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$response->setNotModified();
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}
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$response->setEtag($etag);
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}
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return $response;
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}
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} |