Page Speed Optimization Libraries
1.3.25.1
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00001 /* 00002 * Copyright 2011 Google Inc. 00003 * 00004 * Licensed under the Apache License, Version 2.0 (the "License"); 00005 * you may not use this file except in compliance with the License. 00006 * You may obtain a copy of the License at 00007 * 00008 * http:///www.apache.org/licenses/LICENSE-2.0 00009 * 00010 * Unless required by applicable law or agreed to in writing, software 00011 * distributed under the License is distributed on an "AS IS" BASIS, 00012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 00013 * See the License for the specific language governing permissions and 00014 * limitations under the License. 00015 */ 00016 00018 00019 #ifndef NET_INSTAWEB_HTTP_PUBLIC_INFLATING_FETCH_H_ 00020 #define NET_INSTAWEB_HTTP_PUBLIC_INFLATING_FETCH_H_ 00021 00022 #include "net/instaweb/http/public/async_fetch.h" 00023 #include "net/instaweb/util/public/basictypes.h" 00024 #include "net/instaweb/util/public/gzip_inflater.h" 00025 #include "net/instaweb/util/public/scoped_ptr.h" 00026 #include "net/instaweb/util/public/string_util.h" 00027 00028 namespace net_instaweb { 00029 00030 class MessageHandler; 00031 00042 class InflatingFetch : public SharedAsyncFetch { 00043 public: 00044 explicit InflatingFetch(AsyncFetch* fetch); 00045 virtual ~InflatingFetch(); 00046 00051 void set_inflation_content_type_blacklist( 00052 const std::set<const ContentType*>& bypass_set) { 00053 inflation_content_type_blacklist_ = bypass_set; 00054 } 00055 00059 void EnableGzipFromBackend(); 00060 00061 protected: 00064 virtual bool HandleWrite(const StringPiece& sp, MessageHandler* handler); 00065 00068 virtual void HandleHeadersComplete(); 00069 virtual void HandleDone(bool success); 00070 virtual void Reset(); 00071 00072 private: 00073 void InitInflater(GzipInflater::InflateType, const StringPiece& value); 00074 00077 bool IsCompressionAllowedInRequest(); 00078 00079 scoped_ptr<GzipInflater> inflater_; 00080 00082 bool request_checked_for_accept_encoding_; 00083 00085 bool compression_desired_; 00086 00089 bool inflate_failure_; 00090 00092 std::set<const ContentType*> inflation_content_type_blacklist_; 00093 00094 DISALLOW_COPY_AND_ASSIGN(InflatingFetch); 00095 }; 00096 00097 } 00098 00099 #endif ///< NET_INSTAWEB_HTTP_PUBLIC_INFLATING_FETCH_H_