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annotate OrthancFramework/Sources/HttpClient.h @ 5049:8c9a1cce076e

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CPP Wrapper: new helpers
author Alain Mazy <am@osimis.io>
date Wed, 29 Jun 2022 15:32:44 +0200
parents 43e613a7756b
children 0ea402b4d901
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1 /**
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2 * Orthanc - A Lightweight, RESTful DICOM Store
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, Belgium
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5 * Copyright (C) 2017-2022 Osimis S.A., Belgium
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6 * Copyright (C) 2021-2022 Sebastien Jodogne, ICTEAM UCLouvain, Belgium
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7 *
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8 * This program is free software: you can redistribute it and/or
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9 * modify it under the terms of the GNU Lesser General Public License
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10 * as published by the Free Software Foundation, either version 3 of
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11 * the License, or (at your option) any later version.
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12 *
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13 * This program is distributed in the hope that it will be useful, but
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14 * WITHOUT ANY WARRANTY; without even the implied warranty of
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15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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16 * Lesser General Public License for more details.
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17 *
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18 * You should have received a copy of the GNU Lesser General Public
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19 * License along with this program. If not, see
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20 * <http://www.gnu.org/licenses/>.
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21 **/
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24 #pragma once
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25
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26 #include "Enumerations.h"
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27 #include "OrthancFramework.h"
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28 #include "WebServiceParameters.h"
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29
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30 #include <string>
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31 #include <boost/noncopyable.hpp>
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32 #include <boost/shared_ptr.hpp>
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33 #include <json/value.h>
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34
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35 #if !defined(ORTHANC_ENABLE_CURL)
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36 # error The macro ORTHANC_ENABLE_CURL must be defined
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37 #endif
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39 #if ORTHANC_ENABLE_CURL != 1
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40 # error Support for curl is disabled, cannot use this file
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41 #endif
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42
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43 #if !defined(ORTHANC_ENABLE_SSL)
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44 # error The macro ORTHANC_ENABLE_SSL must be defined
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45 #endif
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46
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47 #if !defined(ORTHANC_ENABLE_PKCS11)
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48 # error The macro ORTHANC_ENABLE_PKCS11 must be defined
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49 #endif
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51
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52 namespace Orthanc
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53 {
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54 class ORTHANC_PUBLIC HttpClient : public boost::noncopyable
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55 {
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56 public:
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57 typedef std::map<std::string, std::string> HttpHeaders;
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58
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59 class IRequestBody : public boost::noncopyable
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60 {
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61 public:
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62 virtual ~IRequestBody()
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63 {
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64 }
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65
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66 virtual bool ReadNextChunk(std::string& chunk) = 0;
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67 };
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68
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69 class IAnswer : public boost::noncopyable
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70 {
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71 public:
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72 virtual ~IAnswer()
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73 {
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74 }
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76 virtual void AddHeader(const std::string& key,
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77 const std::string& value) = 0;
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78
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79 virtual void AddChunk(const void* data,
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80 size_t size) = 0;
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81 };
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82
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83 private:
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84 class CurlHeaders;
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85 class CurlRequestBody;
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86 class CurlAnswer;
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87 class DefaultAnswer;
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88 class GlobalParameters;
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89
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90 struct PImpl;
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91 boost::shared_ptr<PImpl> pimpl_;
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92
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93 std::string url_;
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94 std::string credentials_;
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95 HttpMethod method_;
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96 HttpStatus lastStatus_;
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97 std::string body_; // This only makes sense for POST and PUT requests
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98 bool isVerbose_;
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99 long timeout_;
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100 std::string proxy_;
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101 bool verifyPeers_;
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102 std::string caCertificates_;
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103 std::string clientCertificateFile_;
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104 std::string clientCertificateKeyFile_;
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105 std::string clientCertificateKeyPassword_;
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106 bool pkcs11Enabled_;
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107 bool headersToLowerCase_;
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108 bool redirectionFollowed_;
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109
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110 // New in Orthanc 1.9.3 to avoid memcpy()
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111 bool hasExternalBody_;
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112 const void* externalBodyData_;
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113 size_t externalBodySize_;
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114
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115 void Setup();
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116
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117 void operator= (const HttpClient&); // Assignment forbidden
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118 HttpClient(const HttpClient& base); // Copy forbidden
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119
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120 bool ApplyInternal(CurlAnswer& answer);
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121
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122 bool ApplyInternal(std::string& answerBody,
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123 HttpHeaders* answerHeaders);
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124
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125 bool ApplyInternal(Json::Value& answerBody,
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126 HttpHeaders* answerHeaders);
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127
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128 public:
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129 HttpClient();
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130
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131 HttpClient(const WebServiceParameters& service,
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132 const std::string& uri);
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133
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134 ~HttpClient();
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135
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136 void SetUrl(const char* url);
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137
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138 void SetUrl(const std::string& url);
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139
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140 const std::string& GetUrl() const;
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141
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142 void SetMethod(HttpMethod method);
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143
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144 HttpMethod GetMethod() const;
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145
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146 void SetTimeout(long seconds);
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147
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148 long GetTimeout() const;
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149
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150 void AssignBody(const std::string& data);
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151
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152 void AssignBody(const void* data,
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153 size_t size);
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154
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155 void SetBody(IRequestBody& body);
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156
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157 // New in Orthanc 1.9.3: The "data" buffer must have a lifetime
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158 // that is longer than the HttpClient object
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159 void SetExternalBody(const void* data,
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160 size_t size);
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161
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162 void SetExternalBody(const std::string& data);
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163
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164 void ClearBody();
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165
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166 void SetVerbose(bool isVerbose);
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167
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168 bool IsVerbose() const;
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169
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170 void AddHeader(const std::string& key,
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171 const std::string& value);
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172
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173 void ClearHeaders();
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174
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175 bool Apply(IAnswer& answer);
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176
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177 bool Apply(std::string& answerBody);
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178
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179 bool Apply(Json::Value& answerBody);
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180
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181 bool Apply(std::string& answerBody,
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182 HttpHeaders& answerHeaders);
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183
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184 bool Apply(Json::Value& answerBody,
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185 HttpHeaders& answerHeaders);
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186
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187 HttpStatus GetLastStatus() const;
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188
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189 void SetCredentials(const char* username,
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190 const char* password);
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191
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192 void SetProxy(const std::string& proxy);
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193
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194 void SetHttpsVerifyPeers(bool verify);
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195
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196 bool IsHttpsVerifyPeers() const;
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197
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198 void SetHttpsCACertificates(const std::string& certificates);
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199
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200 const std::string& GetHttpsCACertificates() const;
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201
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202 void SetClientCertificate(const std::string& certificateFile,
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203 const std::string& certificateKeyFile,
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204 const std::string& certificateKeyPassword);
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205
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206 void SetPkcs11Enabled(bool enabled);
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207
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208 bool IsPkcs11Enabled() const;
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209
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210 const std::string& GetClientCertificateFile() const;
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211
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212 const std::string& GetClientCertificateKeyFile() const;
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213
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214 const std::string& GetClientCertificateKeyPassword() const;
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215
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216 void SetConvertHeadersToLowerCase(bool lowerCase);
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217
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218 bool IsConvertHeadersToLowerCase() const;
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219
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220 void SetRedirectionFollowed(bool follow);
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221
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222 bool IsRedirectionFollowed() const;
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223
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224 static void GlobalInitialize();
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225
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226 static void GlobalFinalize();
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227
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228 static void InitializePkcs11(const std::string& module,
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229 const std::string& pin,
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230 bool verbose);
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231
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232 static void ConfigureSsl(bool httpsVerifyPeers,
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233 const std::string& httpsCACertificates);
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234
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235 static void SetDefaultVerbose(bool verbose);
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236
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237 static void SetDefaultProxy(const std::string& proxy);
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238
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239 static void SetDefaultTimeout(long timeout);
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240
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241 void ApplyAndThrowException(IAnswer& answer);
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242
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243 void ApplyAndThrowException(std::string& answerBody);
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244
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245 void ApplyAndThrowException(Json::Value& answerBody);
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246
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247 void ApplyAndThrowException(std::string& answerBody,
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248 HttpHeaders& answerHeaders);
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249
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250 void ApplyAndThrowException(Json::Value& answerBody,
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251 HttpHeaders& answerHeaders);
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252
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253 static void ThrowException(HttpStatus status);
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254 };
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255 }