1 // Copyright 2014 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef COMPONENTS_DATA_REDUCTION_PROXY_COMMON_DATA_REDUCTION_PROXY_HEADERS_H_ 6 #define COMPONENTS_DATA_REDUCTION_PROXY_COMMON_DATA_REDUCTION_PROXY_HEADERS_H_ 7 8 #include <string> 9 10 #include "base/macros.h" 11 #include "base/time/time.h" 12 #include "net/http/http_response_headers.h" 13 #include "net/proxy/proxy_service.h" 14 15 namespace data_reduction_proxy { 16 17 // Contains instructions contained in the Chrome-Proxy header. 18 struct DataReductionProxyInfo { 19 DataReductionProxyInfo() : bypass_all(false) {} 20 21 // True if Chrome should bypass all available data reduction proxies. False 22 // if only the currently connected data reduction proxy should be bypassed. 23 bool bypass_all; 24 25 // Amount of time to bypass the data reduction proxy or proxies. 26 base::TimeDelta bypass_duration; 27 }; 28 29 // Returns true if the Chrome-Proxy header is present and contains a bypass 30 // delay. Sets |proxy_info->bypass_duration| to the specified delay if greater 31 // than 0, and to 0 otherwise to indicate that the default proxy delay 32 // (as specified in |ProxyList::UpdateRetryInfoOnFallback|) should be used. 33 // If all available data reduction proxies should by bypassed, |bypass_all| is 34 // set to true. |proxy_info| must be non-NULL. 35 bool GetDataReductionProxyInfo( 36 const net::HttpResponseHeaders* headers, 37 DataReductionProxyInfo* proxy_info); 38 39 // Returns true if the response contain the data reduction proxy Via header 40 // value. Used to check the integrity of data reduction proxy responses. 41 bool HasDataReductionProxyViaHeader(const net::HttpResponseHeaders* headers); 42 43 // Returns the reason why the Chrome proxy should be bypassed or not, and 44 // populates |proxy_info| with information on how long to bypass if 45 // applicable. 46 net::ProxyService::DataReductionProxyBypassEventType 47 GetDataReductionProxyBypassEventType( 48 const net::HttpResponseHeaders* headers, 49 DataReductionProxyInfo* proxy_info); 50 51 // Searches for the specified Chrome-Proxy action, and if present interprets 52 // its value as a duration in seconds. 53 bool GetDataReductionProxyBypassDuration( 54 const net::HttpResponseHeaders* headers, 55 const std::string& action_prefix, 56 base::TimeDelta* duration); 57 58 } // namespace data_reduction_proxy 59 #endif // COMPONENTS_DATA_REDUCTION_PROXY_COMMON_DATA_REDUCTION_PROXY_HEADERS_H_ 60
