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annotate src/core/http.cc @ 318:3b355fa948c7

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config: use TOML instead of INI unfortunately, INI is not enough, and causes some paths including semicolons to break with our current storage of the library folders. so, I decided to switch to TOML which does support real arrays...
author Paper <paper@paper.us.eu.org>
date Wed, 12 Jun 2024 05:25:41 -0400
parents b1f4d1867ab1
children d928ec7b6a0d
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1 #include "core/http.h"
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2 #include "core/session.h"
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3 #include <QByteArray>
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4 #include <curl/curl.h>
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5 #include <iostream>
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6 #include <string>
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7 #include <vector>
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8
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9 namespace HTTP {
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10
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11 std::string UrlEncode(const std::string& data) {
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12 /* why do I need to init curl just for this? wtf? */
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13 CURL *curl = curl_easy_init();
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14 if (!curl)
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15 return ""; /* no way! */
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16
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17 char* output = curl_easy_escape(curl, data.data(), data.size());
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18 if (!output) {
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19 curl_easy_cleanup(curl);
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20 return "";
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21 }
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22
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23 std::string str(output);
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24
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25 curl_free(output);
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26 curl_easy_cleanup(curl);
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27
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28 return str;
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29 }
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30
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31 std::string UrlDecode(const std::string& data) {
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32 CURL *curl = curl_easy_init();
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33 if (!curl)
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34 return "";
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35
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36 int outlength;
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37 char* output = curl_easy_unescape(curl, data.data(), data.size(), &outlength);
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38 if (!output) {
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39 curl_easy_cleanup(curl);
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40 return "";
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41 }
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42
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43 std::string str(output, outlength);
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44
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45 curl_free(output);
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46 curl_easy_cleanup(curl);
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47
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48 return str;
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49 }
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50
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51 std::string EncodeParamsList(std::string base, const std::map<std::string, std::string>& params) {
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52 std::size_t count = 0;
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53 for (const auto& param : params) {
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54 base += (!count ? "?" : "&");
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55 base += UrlEncode(param.first);
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56 base += "=";
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57 base += UrlEncode(param.second);
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58
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59 count++;
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60 }
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61
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62 return base;
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63 }
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64
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65 static size_t WriteCallback(void* contents, size_t size, size_t nmemb, void* userdata) {
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66 reinterpret_cast<QByteArray*>(userdata)->append(reinterpret_cast<char*>(contents), size * nmemb);
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67 return size * nmemb;
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68 }
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69
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70 QByteArray Request(const std::string& url, const std::vector<std::string>& headers, const std::string& data, Type type) {
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71 struct curl_slist* list = NULL;
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72 QByteArray userdata;
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73
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74 CURL* curl = curl_easy_init();
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75 if (curl) {
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76 for (const std::string& h : headers)
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77 list = curl_slist_append(list, h.c_str());
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78
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79 curl_easy_setopt(curl, CURLOPT_URL, url.c_str());
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80 if (type == Type::Post)
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81 curl_easy_setopt(curl, CURLOPT_POSTFIELDS, data.c_str());
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82 curl_easy_setopt(curl, CURLOPT_HTTPHEADER, list);
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83 curl_easy_setopt(curl, CURLOPT_WRITEDATA, &userdata);
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84 curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, &WriteCallback);
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85 /* Use system certs... useful on Windows. */
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86 curl_easy_setopt(curl, CURLOPT_SSL_OPTIONS, CURLSSLOPT_NATIVE_CA);
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87 curl_easy_setopt(curl, CURLOPT_NOSIGNAL, 1); // threading
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88 CURLcode res = curl_easy_perform(curl);
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89 session.IncrementRequests();
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90 curl_easy_cleanup(curl);
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91 if (res != CURLE_OK)
317
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92 session.SetStatusBar(std::string("curl_easy_perform(curl) failed!: ") + curl_easy_strerror(res));
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93 }
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94 return userdata;
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95 }
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96
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97 /* this function is static */
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98 size_t RequestThread::WriteCallback(void* contents, size_t size, size_t nmemb, void* userdata) {
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99 RequestThread* thread = reinterpret_cast<RequestThread*>(userdata);
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100
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101 const std::lock_guard<std::mutex> lock(thread->callback_data_mutex_);
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102
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103 /* stop writing, then! */
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104 if (thread->cancelled_)
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105 return CURL_WRITEFUNC_ERROR;
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106
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107 /* else, continue on as normal */
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108 thread->array_.append(reinterpret_cast<char*>(contents), size * nmemb);
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109 return size * nmemb;
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110 }
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111
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112 RequestThread::RequestThread(Type type, QObject* parent) : QThread(parent) {
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113 SetType(type);
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114 }
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115
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116 RequestThread::RequestThread(const std::string& url, const std::vector<std::string>& headers,
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117 const std::string& data, Type type, QObject* parent)
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118 : QThread(parent) {
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119 SetUrl(url);
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120 SetData(data);
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121 SetHeaders(headers);
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122 SetType(type);
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123 }
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124
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125 RequestThread::~RequestThread() {
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126 /* block until the function can safely exit.
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127 *
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128 * this sucks. find out a better way to do this, which will probably
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129 * be to put all of the threads in a pool */
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130 Stop();
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131 wait();
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132 }
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133
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134 void RequestThread::SetUrl(const std::string& url) {
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135 url_ = url;
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136 }
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137
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138 void RequestThread::SetHeaders(const std::vector<std::string>& headers) {
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139 headers_ = headers;
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140 }
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141
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142 void RequestThread::SetData(const std::string& data) {
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143 data_ = data;
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144 }
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145
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146 void RequestThread::SetType(Type type) {
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147 type_ = type;
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148 }
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149
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150 void RequestThread::run() {
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151 struct curl_slist* list = NULL;
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152
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153 CURL* curl = curl_easy_init();
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154 if (curl) {
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155 curl_easy_setopt(curl, CURLOPT_URL, url_.c_str());
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156
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157 if (type_ == Type::Post)
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158 curl_easy_setopt(curl, CURLOPT_POSTFIELDS, data_.c_str());
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159
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160 for (const std::string& h : headers_)
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161 list = curl_slist_append(list, h.c_str());
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162 curl_easy_setopt(curl, CURLOPT_HTTPHEADER, list);
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163
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164 curl_easy_setopt(curl, CURLOPT_WRITEDATA, this);
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165 curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, &RequestThread::WriteCallback);
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166
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167 /* Use system certs... useful on Windows. */
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168 curl_easy_setopt(curl, CURLOPT_SSL_OPTIONS, CURLSSLOPT_NATIVE_CA);
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169
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170 /* does something with threading, don't remember what though */
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171 curl_easy_setopt(curl, CURLOPT_NOSIGNAL, 1);
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172
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173 CURLcode res = curl_easy_perform(curl);
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174 session.IncrementRequests();
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175 curl_easy_cleanup(curl);
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176
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177 callback_data_mutex_.lock();
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178 if (res != CURLE_OK && !(res == CURLE_WRITE_ERROR && cancelled_))
317
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179 session.SetStatusBar(std::string("curl_easy_perform(curl) failed!: ") + curl_easy_strerror(res));
301
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180 callback_data_mutex_.unlock();
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181 }
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182
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183 emit ReceivedData(array_);
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184 array_.clear();
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185 }
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186
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187 void RequestThread::Stop() {
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188 const std::lock_guard<std::mutex> lock(callback_data_mutex_);
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189 cancelled_ = true;
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190 }
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191
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192 } // namespace HTTP