Mercurial > hg > orthanc
annotate OrthancFramework/Sources/HttpServer/HttpOutput.cpp @ 4543:5b1b46f3fcca Orthanc-1.7.3
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| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Tue, 02 Mar 2021 16:52:24 +0100 |
| parents | bf7b9edf6b81 |
| children | 2d5209153b32 |
| rev | line source |
|---|---|
| 0 | 1 /** |
| 59 | 2 * Orthanc - A Lightweight, RESTful DICOM Store |
| 1900 | 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) 2017-2020 Osimis S.A., Belgium |
| 0 | 6 * |
| 7 * This program is free software: you can redistribute it and/or | |
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8 * modify it under the terms of the GNU Lesser General Public License |
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9 * as published by the Free Software Foundation, either version 3 of |
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10 * the License, or (at your option) any later version. |
| 136 | 11 * |
| 0 | 12 * This program is distributed in the hope that it will be useful, but |
| 13 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
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15 * Lesser General Public License for more details. |
| 0 | 16 * |
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17 * You should have received a copy of the GNU Lesser General Public |
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18 * License along with this program. If not, see |
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19 * <http://www.gnu.org/licenses/>. |
| 0 | 20 **/ |
| 21 | |
| 22 | |
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23 #include "../PrecompiledHeaders.h" |
| 0 | 24 #include "HttpOutput.h" |
| 25 | |
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26 #include "../ChunkedBuffer.h" |
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27 #include "../Compression/GzipCompressor.h" |
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28 #include "../Compression/ZlibCompressor.h" |
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29 #include "../Logging.h" |
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30 #include "../OrthancException.h" |
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31 #include "../Toolbox.h" |
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32 |
| 324 | 33 #include <iostream> |
| 0 | 34 #include <vector> |
| 35 #include <stdio.h> | |
| 36 #include <boost/lexical_cast.hpp> | |
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37 |
| 0 | 38 |
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39 #if ORTHANC_ENABLE_CIVETWEB == 1 |
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40 # if !defined(CIVETWEB_HAS_DISABLE_KEEP_ALIVE) |
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41 # error Macro CIVETWEB_HAS_DISABLE_KEEP_ALIVE must be defined |
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42 # endif |
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43 #endif |
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44 |
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45 |
| 59 | 46 namespace Orthanc |
| 0 | 47 { |
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48 HttpOutput::StateMachine::StateMachine(IHttpOutputStream& stream, |
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49 bool isKeepAlive) : |
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50 stream_(stream), |
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51 state_(State_WritingHeader), |
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52 status_(HttpStatus_200_Ok), |
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53 hasContentLength_(false), |
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54 contentPosition_(0), |
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55 keepAlive_(isKeepAlive) |
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56 { |
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57 } |
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58 |
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59 HttpOutput::StateMachine::~StateMachine() |
| 910 | 60 { |
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61 if (state_ != State_Done) |
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62 { |
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63 //asm volatile ("int3;"); |
| 1200 | 64 //LOG(ERROR) << "This HTTP answer does not contain any body"; |
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65 } |
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66 |
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67 if (hasContentLength_ && contentPosition_ != contentLength_) |
| 910 | 68 { |
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69 LOG(ERROR) << "This HTTP answer has not sent the proper number of bytes in its body"; |
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70 } |
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71 } |
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72 |
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73 |
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74 void HttpOutput::StateMachine::SetHttpStatus(HttpStatus status) |
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75 { |
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76 if (state_ != State_WritingHeader) |
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77 { |
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78 throw OrthancException(ErrorCode_BadSequenceOfCalls); |
| 910 | 79 } |
| 80 | |
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81 status_ = status; |
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82 } |
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83 |
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84 |
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85 void HttpOutput::StateMachine::SetContentLength(uint64_t length) |
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86 { |
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87 if (state_ != State_WritingHeader) |
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88 { |
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89 throw OrthancException(ErrorCode_BadSequenceOfCalls); |
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90 } |
| 910 | 91 |
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92 hasContentLength_ = true; |
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93 contentLength_ = length; |
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94 } |
| 910 | 95 |
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96 void HttpOutput::StateMachine::SetContentType(const char* contentType) |
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97 { |
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98 AddHeader("Content-Type", contentType); |
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99 } |
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100 |
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101 void HttpOutput::StateMachine::SetContentFilename(const char* filename) |
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102 { |
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103 // TODO Escape double quotes |
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104 AddHeader("Content-Disposition", "filename=\"" + std::string(filename) + "\""); |
| 910 | 105 } |
| 106 | |
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107 void HttpOutput::StateMachine::SetCookie(const std::string& cookie, |
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108 const std::string& value) |
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109 { |
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110 if (state_ != State_WritingHeader) |
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111 { |
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112 throw OrthancException(ErrorCode_BadSequenceOfCalls); |
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113 } |
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114 |
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115 // TODO Escape "=" characters |
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116 AddHeader("Set-Cookie", cookie + "=" + value); |
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117 } |
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118 |
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119 |
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120 void HttpOutput::StateMachine::AddHeader(const std::string& header, |
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121 const std::string& value) |
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122 { |
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123 if (state_ != State_WritingHeader) |
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124 { |
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125 throw OrthancException(ErrorCode_BadSequenceOfCalls); |
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126 } |
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127 |
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128 headers_.push_back(header + ": " + value + "\r\n"); |
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129 } |
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130 |
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131 void HttpOutput::StateMachine::ClearHeaders() |
| 910 | 132 { |
| 133 if (state_ != State_WritingHeader) | |
| 134 { | |
| 135 throw OrthancException(ErrorCode_BadSequenceOfCalls); | |
| 136 } | |
| 137 | |
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138 headers_.clear(); |
| 910 | 139 } |
| 140 | |
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141 void HttpOutput::StateMachine::SendBody(const void* buffer, size_t length) |
| 910 | 142 { |
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143 if (state_ == State_Done) |
| 910 | 144 { |
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145 if (length == 0) |
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146 { |
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147 return; |
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148 } |
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149 else |
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150 { |
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151 throw OrthancException(ErrorCode_BadSequenceOfCalls, |
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152 "Because of keep-alive connections, the entire body must " |
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153 "be sent at once or Content-Length must be given"); |
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154 } |
| 910 | 155 } |
| 156 | |
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157 if (state_ == State_WritingMultipart) |
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158 { |
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159 throw OrthancException(ErrorCode_InternalError); |
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160 } |
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161 |
| 910 | 162 if (state_ == State_WritingHeader) |
| 163 { | |
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164 // Send the HTTP header before writing the body |
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165 |
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166 stream_.OnHttpStatusReceived(status_); |
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167 |
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168 std::string s = "HTTP/1.1 " + |
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169 boost::lexical_cast<std::string>(status_) + |
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170 " " + std::string(EnumerationToString(status_)) + |
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171 "\r\n"; |
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172 |
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173 if (keepAlive_) |
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174 { |
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175 s += "Connection: keep-alive\r\n"; |
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176 } |
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177 else |
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178 { |
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179 s += "Connection: close\r\n"; |
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180 } |
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181 |
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182 for (std::list<std::string>::const_iterator |
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183 it = headers_.begin(); it != headers_.end(); ++it) |
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184 { |
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185 s += *it; |
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186 } |
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187 |
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188 if (status_ != HttpStatus_200_Ok) |
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189 { |
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190 hasContentLength_ = false; |
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191 } |
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192 |
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193 uint64_t contentLength = (hasContentLength_ ? contentLength_ : length); |
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194 s += "Content-Length: " + boost::lexical_cast<std::string>(contentLength) + "\r\n\r\n"; |
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195 |
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196 stream_.Send(true, s.c_str(), s.size()); |
| 910 | 197 state_ = State_WritingBody; |
| 198 } | |
| 199 | |
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200 if (hasContentLength_ && |
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201 contentPosition_ + length > contentLength_) |
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202 { |
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203 throw OrthancException(ErrorCode_BadSequenceOfCalls, |
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204 "The body size exceeds what was declared with SetContentSize()"); |
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205 } |
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206 |
| 910 | 207 if (length > 0) |
| 208 { | |
| 911 | 209 stream_.Send(false, buffer, length); |
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210 contentPosition_ += length; |
| 330 | 211 } |
| 212 | |
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213 if (!hasContentLength_ || |
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214 contentPosition_ == contentLength_) |
| 330 | 215 { |
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216 state_ = State_Done; |
| 330 | 217 } |
| 218 } | |
| 219 | |
| 207 | 220 |
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221 void HttpOutput::StateMachine::CloseBody() |
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222 { |
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223 switch (state_) |
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224 { |
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225 case State_WritingHeader: |
| 1522 | 226 SetContentLength(0); |
| 227 SendBody(NULL, 0); | |
| 228 break; | |
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229 |
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230 case State_WritingBody: |
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231 if (!hasContentLength_ || |
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232 contentPosition_ == contentLength_) |
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233 { |
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234 state_ = State_Done; |
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235 } |
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236 else |
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237 { |
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238 throw OrthancException(ErrorCode_BadSequenceOfCalls, |
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239 "The body size has not reached what was declared with SetContentSize()"); |
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240 } |
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241 |
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242 break; |
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243 |
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244 case State_WritingMultipart: |
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245 throw OrthancException(ErrorCode_BadSequenceOfCalls, |
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246 "Cannot invoke CloseBody() with multipart outputs"); |
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247 |
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248 case State_Done: |
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249 return; // Ignore |
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250 |
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251 default: |
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252 throw OrthancException(ErrorCode_InternalError); |
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253 } |
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254 } |
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255 |
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256 |
| 1517 | 257 HttpCompression HttpOutput::GetPreferredCompression(size_t bodySize) const |
| 258 { | |
| 259 #if 0 | |
| 260 // TODO Do not compress small files? | |
| 261 if (bodySize < 512) | |
| 262 { | |
| 263 return HttpCompression_None; | |
| 264 } | |
| 265 #endif | |
| 266 | |
| 267 // Prefer "gzip" over "deflate" if the choice is offered | |
| 268 | |
| 269 if (isGzipAllowed_) | |
| 270 { | |
| 271 return HttpCompression_Gzip; | |
| 272 } | |
| 273 else if (isDeflateAllowed_) | |
| 274 { | |
| 275 return HttpCompression_Deflate; | |
| 276 } | |
| 277 else | |
| 278 { | |
| 279 return HttpCompression_None; | |
| 280 } | |
| 281 } | |
| 282 | |
| 283 | |
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284 void HttpOutput::SendMethodNotAllowed(const std::string& allowed) |
| 0 | 285 { |
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286 stateMachine_.ClearHeaders(); |
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287 stateMachine_.SetHttpStatus(HttpStatus_405_MethodNotAllowed); |
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288 stateMachine_.AddHeader("Allow", allowed); |
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289 stateMachine_.SendBody(NULL, 0); |
| 0 | 290 } |
| 291 | |
| 292 | |
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293 void HttpOutput::SendStatus(HttpStatus status, |
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294 const char* message, |
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295 size_t messageSize) |
| 0 | 296 { |
| 1954 | 297 if (status == HttpStatus_301_MovedPermanently || |
| 3425 | 298 //status == HttpStatus_401_Unauthorized || |
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299 status == HttpStatus_405_MethodNotAllowed) |
| 0 | 300 { |
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301 throw OrthancException(ErrorCode_ParameterOutOfRange, |
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302 "Please use the dedicated methods to this HTTP status code in HttpOutput"); |
| 0 | 303 } |
| 304 | |
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305 stateMachine_.SetHttpStatus(status); |
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306 stateMachine_.SendBody(message, messageSize); |
| 339 | 307 } |
| 308 | |
| 309 | |
| 0 | 310 void HttpOutput::Redirect(const std::string& path) |
| 311 { | |
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312 stateMachine_.ClearHeaders(); |
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313 stateMachine_.SetHttpStatus(HttpStatus_301_MovedPermanently); |
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314 stateMachine_.AddHeader("Location", path); |
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315 stateMachine_.SendBody(NULL, 0); |
| 0 | 316 } |
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317 |
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318 |
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319 void HttpOutput::SendUnauthorized(const std::string& realm) |
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320 { |
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321 stateMachine_.ClearHeaders(); |
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322 stateMachine_.SetHttpStatus(HttpStatus_401_Unauthorized); |
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323 stateMachine_.AddHeader("WWW-Authenticate", "Basic realm=\"" + realm + "\""); |
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324 stateMachine_.SendBody(NULL, 0); |
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325 } |
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326 |
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327 |
| 1521 | 328 void HttpOutput::Answer(const void* buffer, |
| 329 size_t length) | |
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330 { |
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331 if (length == 0) |
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332 { |
| 1521 | 333 AnswerEmpty(); |
| 334 return; | |
| 335 } | |
| 336 | |
| 337 HttpCompression compression = GetPreferredCompression(length); | |
| 338 | |
| 339 if (compression == HttpCompression_None) | |
| 340 { | |
| 341 stateMachine_.SetContentLength(length); | |
| 342 stateMachine_.SendBody(buffer, length); | |
| 343 return; | |
| 344 } | |
| 345 | |
| 346 std::string compressed, encoding; | |
| 347 | |
| 348 switch (compression) | |
| 349 { | |
| 350 case HttpCompression_Deflate: | |
| 351 { | |
| 352 encoding = "deflate"; | |
| 353 ZlibCompressor compressor; | |
| 354 // Do not prefix the buffer with its uncompressed size, to be compatible with "deflate" | |
| 355 compressor.SetPrefixWithUncompressedSize(false); | |
| 356 compressor.Compress(compressed, buffer, length); | |
| 357 break; | |
| 358 } | |
| 359 | |
| 360 case HttpCompression_Gzip: | |
| 361 { | |
| 362 encoding = "gzip"; | |
| 363 GzipCompressor compressor; | |
| 364 compressor.Compress(compressed, buffer, length); | |
| 365 break; | |
| 366 } | |
| 367 | |
| 368 default: | |
| 369 throw OrthancException(ErrorCode_InternalError); | |
| 370 } | |
| 371 | |
| 372 LOG(TRACE) << "Compressing a HTTP answer using " << encoding; | |
| 373 | |
| 374 // The body is empty, do not use HTTP compression | |
| 375 if (compressed.size() == 0) | |
| 376 { | |
| 377 AnswerEmpty(); | |
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378 } |
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379 else |
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380 { |
| 1521 | 381 stateMachine_.AddHeader("Content-Encoding", encoding); |
| 382 stateMachine_.SetContentLength(compressed.size()); | |
| 383 stateMachine_.SendBody(compressed.c_str(), compressed.size()); | |
| 384 } | |
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385 |
| 1521 | 386 stateMachine_.CloseBody(); |
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387 } |
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388 |
| 1521 | 389 |
| 390 void HttpOutput::Answer(const std::string& str) | |
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391 { |
| 1521 | 392 Answer(str.size() == 0 ? NULL : str.c_str(), str.size()); |
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393 } |
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394 |
| 1521 | 395 |
| 396 void HttpOutput::AnswerEmpty() | |
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397 { |
|
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398 stateMachine_.CloseBody(); |
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399 } |
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400 |
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401 |
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402 void HttpOutput::StateMachine::CheckHeadersCompatibilityWithMultipart() const |
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403 { |
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404 for (std::list<std::string>::const_iterator |
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405 it = headers_.begin(); it != headers_.end(); ++it) |
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406 { |
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407 if (!Toolbox::StartsWith(*it, "Set-Cookie: ")) |
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408 { |
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409 throw OrthancException(ErrorCode_BadSequenceOfCalls, |
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410 "The only headers that can be set in multipart answers " |
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411 "are Set-Cookie (here: " + *it + " is set)"); |
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412 } |
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413 } |
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414 } |
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415 |
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416 |
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417 static void PrepareMultipartMainHeader(std::string& boundary, |
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418 std::string& contentTypeHeader, |
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419 const std::string& subType, |
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420 const std::string& contentType) |
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421 { |
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422 if (subType != "mixed" && |
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423 subType != "related") |
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424 { |
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425 throw OrthancException(ErrorCode_ParameterOutOfRange); |
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426 } |
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427 |
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428 /** |
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429 * Fix for issue 54 ("Decide what to do wrt. quoting of multipart |
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430 * answers"). The "type" parameter in the "Content-Type" HTTP |
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431 * header must be quoted if it contains a forward slash "/". This |
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432 * is necessary for DICOMweb compatibility with OsiriX, but breaks |
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433 * compatibility with old releases of the client in the Orthanc |
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434 * DICOMweb plugin <= 0.3 (releases >= 0.4 work fine). |
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435 * |
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436 * Full history is available at the following locations: |
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437 * - In changeset 2248:69b0f4e8a49b: |
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438 * # hg history -v -r 2248 |
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439 * - https://bitbucket.org/sjodogne/orthanc/issues/54/ |
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440 * - https://groups.google.com/d/msg/orthanc-users/65zhIM5xbKI/TU5Q1_LhAwAJ |
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441 **/ |
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442 std::string tmp; |
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443 if (contentType.find('/') == std::string::npos) |
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444 { |
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445 // No forward slash in the content type |
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446 tmp = contentType; |
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447 } |
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448 else |
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449 { |
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450 // Quote the content type because of the forward slash |
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451 tmp = "\"" + contentType + "\""; |
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452 } |
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453 |
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454 boundary = Toolbox::GenerateUuid() + "-" + Toolbox::GenerateUuid(); |
| 3616 | 455 |
| 456 /** | |
| 457 * Fix for issue #165: "Encapsulation boundaries must not appear | |
| 458 * within the encapsulations, and must be no longer than 70 | |
| 459 * characters, not counting the two leading hyphens." | |
| 460 * https://tools.ietf.org/html/rfc1521 | |
| 461 * https://bitbucket.org/sjodogne/orthanc/issues/165/ | |
| 462 **/ | |
| 463 if (boundary.size() != 36 + 1 + 36) // one UUID contains 36 characters | |
| 464 { | |
| 465 throw OrthancException(ErrorCode_InternalError); | |
| 466 } | |
| 467 | |
| 468 boundary = boundary.substr(0, 70); | |
| 469 | |
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470 contentTypeHeader = ("multipart/" + subType + "; type=" + tmp + "; boundary=" + boundary); |
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471 } |
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472 |
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473 |
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474 void HttpOutput::StateMachine::StartMultipart(const std::string& subType, |
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475 const std::string& contentType) |
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476 { |
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477 if (state_ != State_WritingHeader) |
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478 { |
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479 throw OrthancException(ErrorCode_BadSequenceOfCalls); |
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480 } |
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481 |
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482 if (status_ != HttpStatus_200_Ok) |
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483 { |
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484 SendBody(NULL, 0); |
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485 return; |
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486 } |
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487 |
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488 stream_.OnHttpStatusReceived(status_); |
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489 |
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490 std::string header = "HTTP/1.1 200 OK\r\n"; |
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491 |
|
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492 if (keepAlive_) |
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493 { |
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494 #if ORTHANC_ENABLE_MONGOOSE == 1 |
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495 throw OrthancException(ErrorCode_NotImplemented, |
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496 "Multipart answers are not implemented together " |
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497 "with keep-alive connections if using Mongoose"); |
|
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498 |
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499 #elif ORTHANC_ENABLE_CIVETWEB == 1 |
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500 # if CIVETWEB_HAS_DISABLE_KEEP_ALIVE == 1 |
|
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501 // Turn off Keep-Alive for multipart answers |
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502 // https://github.com/civetweb/civetweb/issues/727 |
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503 stream_.DisableKeepAlive(); |
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504 header += "Connection: close\r\n"; |
|
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505 # else |
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506 // The function "mg_disable_keep_alive()" is not available, |
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507 // let's continue with Keep-Alive. Performance of WADO-RS will |
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508 // decrease. |
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509 header += "Connection: keep-alive\r\n"; |
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510 # endif |
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511 |
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512 #else |
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513 # error Please support your embedded Web server here |
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514 #endif |
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515 } |
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516 else |
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517 { |
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518 header += "Connection: close\r\n"; |
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519 } |
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520 |
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521 // Possibly add the cookies |
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522 CheckHeadersCompatibilityWithMultipart(); |
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523 |
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524 for (std::list<std::string>::const_iterator |
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525 it = headers_.begin(); it != headers_.end(); ++it) |
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526 { |
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527 header += *it; |
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528 } |
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529 |
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530 std::string contentTypeHeader; |
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531 PrepareMultipartMainHeader(multipartBoundary_, contentTypeHeader, subType, contentType); |
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532 multipartContentType_ = contentType; |
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533 header += ("Content-Type: " + contentTypeHeader + "\r\n\r\n"); |
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534 |
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535 stream_.Send(true, header.c_str(), header.size()); |
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536 state_ = State_WritingMultipart; |
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537 } |
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538 |
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539 |
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540 static void PrepareMultipartItemHeader(std::string& target, |
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541 size_t length, |
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542 const std::map<std::string, std::string>& headers, |
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543 const std::string& boundary, |
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544 const std::string& contentType) |
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545 { |
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546 target = "--" + boundary + "\r\n"; |
|
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547 |
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548 bool hasContentType = false; |
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549 bool hasContentLength = false; |
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550 bool hasMimeVersion = false; |
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551 |
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552 for (std::map<std::string, std::string>::const_iterator |
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553 it = headers.begin(); it != headers.end(); ++it) |
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554 { |
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555 target += it->first + ": " + it->second + "\r\n"; |
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556 |
|
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|
557 std::string tmp; |
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OrthancPluginSendMultipartItem2 for DICOMweb
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558 Toolbox::ToLowerCase(tmp, it->first); |
|
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OrthancPluginSendMultipartItem2 for DICOMweb
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559 |
|
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OrthancPluginSendMultipartItem2 for DICOMweb
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560 if (tmp == "content-type") |
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OrthancPluginSendMultipartItem2 for DICOMweb
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561 { |
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OrthancPluginSendMultipartItem2 for DICOMweb
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|
562 hasContentType = true; |
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OrthancPluginSendMultipartItem2 for DICOMweb
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563 } |
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OrthancPluginSendMultipartItem2 for DICOMweb
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564 |
|
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OrthancPluginSendMultipartItem2 for DICOMweb
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changeset
|
565 if (tmp == "content-length") |
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OrthancPluginSendMultipartItem2 for DICOMweb
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changeset
|
566 { |
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OrthancPluginSendMultipartItem2 for DICOMweb
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567 hasContentLength = true; |
|
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OrthancPluginSendMultipartItem2 for DICOMweb
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diff
changeset
|
568 } |
|
5cf2bd0abfa2
OrthancPluginSendMultipartItem2 for DICOMweb
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diff
changeset
|
569 |
|
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OrthancPluginSendMultipartItem2 for DICOMweb
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diff
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570 if (tmp == "mime-version") |
|
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OrthancPluginSendMultipartItem2 for DICOMweb
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571 { |
|
5cf2bd0abfa2
OrthancPluginSendMultipartItem2 for DICOMweb
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|
572 hasMimeVersion = true; |
|
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OrthancPluginSendMultipartItem2 for DICOMweb
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573 } |
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OrthancPluginSendMultipartItem2 for DICOMweb
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574 } |
|
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OrthancPluginSendMultipartItem2 for DICOMweb
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diff
changeset
|
575 |
|
5cf2bd0abfa2
OrthancPluginSendMultipartItem2 for DICOMweb
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diff
changeset
|
576 if (!hasContentType) |
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OrthancPluginSendMultipartItem2 for DICOMweb
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577 { |
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578 target += "Content-Type: " + contentType + "\r\n"; |
|
1882
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OrthancPluginSendMultipartItem2 for DICOMweb
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579 } |
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OrthancPluginSendMultipartItem2 for DICOMweb
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580 |
|
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OrthancPluginSendMultipartItem2 for DICOMweb
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changeset
|
581 if (!hasContentLength) |
|
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OrthancPluginSendMultipartItem2 for DICOMweb
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changeset
|
582 { |
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583 target += "Content-Length: " + boost::lexical_cast<std::string>(length) + "\r\n"; |
|
1882
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OrthancPluginSendMultipartItem2 for DICOMweb
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diff
changeset
|
584 } |
|
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OrthancPluginSendMultipartItem2 for DICOMweb
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changeset
|
585 |
|
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OrthancPluginSendMultipartItem2 for DICOMweb
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586 if (!hasMimeVersion) |
|
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OrthancPluginSendMultipartItem2 for DICOMweb
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|
587 { |
|
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588 target += "MIME-Version: 1.0\r\n\r\n"; |
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589 } |
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590 } |
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changeset
|
591 |
|
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changeset
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592 |
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593 void HttpOutput::StateMachine::SendMultipartItem(const void* item, |
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594 size_t length, |
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595 const std::map<std::string, std::string>& headers) |
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596 { |
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597 if (state_ != State_WritingMultipart) |
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598 { |
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599 throw OrthancException(ErrorCode_BadSequenceOfCalls); |
|
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600 } |
|
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|
601 |
|
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602 std::string header; |
|
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603 PrepareMultipartItemHeader(header, length, headers, multipartBoundary_, multipartContentType_); |
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604 stream_.Send(false, header.c_str(), header.size()); |
|
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changeset
|
605 |
|
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Plugins can send answers as multipart messages
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606 if (length > 0) |
|
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607 { |
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Plugins can send answers as multipart messages
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608 stream_.Send(false, item, length); |
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609 } |
|
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Plugins can send answers as multipart messages
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changeset
|
610 |
|
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611 stream_.Send(false, "\r\n", 2); |
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612 } |
|
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Plugins can send answers as multipart messages
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|
613 |
|
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Plugins can send answers as multipart messages
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changeset
|
614 |
|
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Plugins can send answers as multipart messages
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|
615 void HttpOutput::StateMachine::CloseMultipart() |
|
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616 { |
|
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617 if (state_ != State_WritingMultipart) |
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|
618 { |
|
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|
619 throw OrthancException(ErrorCode_BadSequenceOfCalls); |
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620 } |
|
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|
621 |
|
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622 // The two lines below might throw an exception, if the client has |
|
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|
623 // closed the connection. Such an error is ignored. |
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624 try |
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|
625 { |
|
1832
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Fix formatting of multipart HTTP answers
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|
626 std::string header = "--" + multipartBoundary_ + "--\r\n"; |
|
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627 stream_.Send(false, header.c_str(), header.size()); |
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|
628 } |
|
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Plugins can send answers as multipart messages
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|
629 catch (OrthancException&) |
|
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630 { |
|
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|
631 } |
|
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|
632 |
|
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Plugins can send answers as multipart messages
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|
633 state_ = State_Done; |
|
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634 } |
|
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changeset
|
635 |
|
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|
636 |
|
3380
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637 static void AnswerStreamAsBuffer(HttpOutput& output, |
|
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638 IHttpStreamAnswer& stream) |
|
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639 { |
|
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HTTP header "Accept-Encoding" is honored for streams without built-in support for compression
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640 ChunkedBuffer buffer; |
|
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641 |
|
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642 while (stream.ReadNextChunk()) |
|
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643 { |
|
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644 if (stream.GetChunkSize() > 0) |
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645 { |
|
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646 buffer.AddChunk(stream.GetChunkContent(), stream.GetChunkSize()); |
|
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647 } |
|
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648 } |
|
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649 |
|
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HTTP header "Accept-Encoding" is honored for streams without built-in support for compression
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|
650 std::string s; |
|
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651 buffer.Flatten(s); |
|
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652 |
|
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653 output.SetContentType(stream.GetContentType()); |
|
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654 |
|
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|
655 std::string filename; |
|
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656 if (stream.HasContentFilename(filename)) |
|
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|
657 { |
|
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|
658 output.SetContentFilename(filename.c_str()); |
|
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changeset
|
659 } |
|
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changeset
|
660 |
|
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changeset
|
661 output.Answer(s); |
|
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|
662 } |
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663 |
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664 |
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665 void HttpOutput::Answer(IHttpStreamAnswer& stream) |
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666 { |
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667 HttpCompression compression = stream.SetupHttpCompression(isGzipAllowed_, isDeflateAllowed_); |
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668 |
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669 switch (compression) |
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670 { |
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671 case HttpCompression_None: |
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672 { |
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673 if (isGzipAllowed_ || isDeflateAllowed_) |
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674 { |
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675 // New in Orthanc 1.5.7: Compress streams without built-in |
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676 // compression, if requested by the "Accept-Encoding" HTTP |
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677 // header |
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678 AnswerStreamAsBuffer(*this, stream); |
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679 return; |
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680 } |
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681 |
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682 break; |
|
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683 } |
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684 |
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685 case HttpCompression_Gzip: |
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686 stateMachine_.AddHeader("Content-Encoding", "gzip"); |
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687 break; |
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688 |
|
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689 case HttpCompression_Deflate: |
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690 stateMachine_.AddHeader("Content-Encoding", "deflate"); |
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691 break; |
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|
692 |
|
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|
693 default: |
|
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694 throw OrthancException(ErrorCode_ParameterOutOfRange); |
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695 } |
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|
696 |
|
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697 stateMachine_.SetContentLength(stream.GetContentLength()); |
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698 |
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699 std::string contentType = stream.GetContentType(); |
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700 if (contentType.empty()) |
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701 { |
|
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702 contentType = MIME_BINARY; |
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703 } |
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|
704 |
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|
705 stateMachine_.SetContentType(contentType.c_str()); |
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|
706 |
|
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|
707 std::string filename; |
|
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708 if (stream.HasContentFilename(filename)) |
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|
709 { |
|
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|
710 SetContentFilename(filename.c_str()); |
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711 } |
|
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|
712 |
|
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713 while (stream.ReadNextChunk()) |
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|
714 { |
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|
715 stateMachine_.SendBody(stream.GetChunkContent(), |
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716 stream.GetChunkSize()); |
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717 } |
|
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|
718 |
|
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|
719 stateMachine_.CloseBody(); |
|
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720 } |
|
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|
721 |
|
3528
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|
722 |
|
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|
723 void HttpOutput::AnswerMultipartWithoutChunkedTransfer( |
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|
724 const std::string& subType, |
|
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725 const std::string& contentType, |
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726 const std::vector<const void*>& parts, |
|
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|
727 const std::vector<size_t>& sizes, |
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728 const std::vector<const std::map<std::string, std::string>*>& headers) |
|
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|
729 { |
|
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|
730 if (parts.size() != sizes.size()) |
|
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|
731 { |
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732 throw OrthancException(ErrorCode_ParameterOutOfRange); |
|
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|
733 } |
|
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changeset
|
734 |
|
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|
735 stateMachine_.CheckHeadersCompatibilityWithMultipart(); |
|
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changeset
|
736 |
|
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changeset
|
737 std::string boundary, contentTypeHeader; |
|
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|
738 PrepareMultipartMainHeader(boundary, contentTypeHeader, subType, contentType); |
|
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|
739 SetContentType(contentTypeHeader); |
|
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|
740 |
|
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|
741 std::map<std::string, std::string> empty; |
|
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|
742 |
|
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|
743 ChunkedBuffer chunked; |
|
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744 for (size_t i = 0; i < parts.size(); i++) |
|
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745 { |
|
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|
746 std::string partHeader; |
|
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|
747 PrepareMultipartItemHeader(partHeader, sizes[i], headers[i] == NULL ? empty : *headers[i], |
|
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|
748 boundary, contentType); |
|
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changeset
|
749 |
|
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|
750 chunked.AddChunk(partHeader); |
|
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|
751 chunked.AddChunk(parts[i], sizes[i]); |
|
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|
752 chunked.AddChunk("\r\n"); |
|
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changeset
|
753 } |
|
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diff
changeset
|
754 |
|
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changeset
|
755 chunked.AddChunk("--" + boundary + "--\r\n"); |
|
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changeset
|
756 |
|
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changeset
|
757 std::string body; |
|
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changeset
|
758 chunked.Flatten(body); |
|
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|
759 Answer(body); |
|
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changeset
|
760 } |
| 0 | 761 } |