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annotate deps/Platinum/Source/Core/PltEvent.cpp @ 0:3425707ddbf6

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author fraserofthenight
date Mon, 06 Jul 2009 08:06:28 -0700
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1 /*****************************************************************
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2 |
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3 | Platinum - Control/Event
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4 |
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5 | Copyright (c) 2004-2008, Plutinosoft, LLC.
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6 | All rights reserved.
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7 | http://www.plutinosoft.com
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8 |
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9 | This program is free software; you can redistribute it and/or
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10 | modify it under the terms of the GNU General Public License
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11 | as published by the Free Software Foundation; either version 2
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12 | of the License, or (at your option) any later version.
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13 |
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14 | OEMs, ISVs, VARs and other distributors that combine and
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15 | distribute commercially licensed software with Platinum software
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16 | and do not wish to distribute the source code for the commercially
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17 | licensed software under version 2, or (at your option) any later
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18 | version, of the GNU General Public License (the "GPL") must enter
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19 | into a commercial license agreement with Plutinosoft, LLC.
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20 |
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21 | This program is distributed in the hope that it will be useful,
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22 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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23 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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24 | GNU General Public License for more details.
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25 |
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26 | You should have received a copy of the GNU General Public License
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27 | along with this program; see the file LICENSE.txt. If not, write to
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28 | the Free Software Foundation, Inc.,
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29 | 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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30 | http://www.gnu.org/licenses/gpl-2.0.html
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31 |
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32 ****************************************************************/
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33
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34 /*----------------------------------------------------------------------
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35 | includes
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36 +---------------------------------------------------------------------*/
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37 #include "PltTaskManager.h"
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38 #include "PltEvent.h"
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39 #include "PltService.h"
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40 #include "PltUPnP.h"
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41 #include "PltDeviceData.h"
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42 #include "PltXmlHelper.h"
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43
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44 NPT_SET_LOCAL_LOGGER("platinum.core.event")
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45
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46 /*----------------------------------------------------------------------
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47 | PLT_EventSubscriber::PLT_EventSubscriber
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48 +---------------------------------------------------------------------*/
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49 PLT_EventSubscriber::PLT_EventSubscriber(PLT_TaskManager* task_manager,
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50 PLT_Service* service,
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51 const char* sid,
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52 int timeout /* = -1 */) :
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53 m_TaskManager(task_manager),
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54 m_Service(service),
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55 m_EventKey(0),
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56 m_SubscriberTask(NULL),
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57 m_SID(sid)
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58 {
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59 NPT_LOG_FINE_1("Creating new subscriber (%s)", m_SID.GetChars());
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60 SetTimeout(timeout);
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61 }
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62
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63 /*----------------------------------------------------------------------
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64 | PLT_EventSubscriber::~PLT_EventSubscriber
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65 +---------------------------------------------------------------------*/
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66 PLT_EventSubscriber::~PLT_EventSubscriber()
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67 {
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68 NPT_LOG_FINE_1("Deleting subscriber (%s)", m_SID.GetChars());
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69 if (m_SubscriberTask) {
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70 m_SubscriberTask->Kill();
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71 m_SubscriberTask = NULL;
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72 }
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73 }
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74
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75 /*----------------------------------------------------------------------
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76 | PLT_EventSubscriber::GetService
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77 +---------------------------------------------------------------------*/
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78 PLT_Service*
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79 PLT_EventSubscriber::GetService()
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80 {
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81 return m_Service;
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82 }
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83
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84 /*----------------------------------------------------------------------
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85 | PLT_EventSubscriber::GetEventKey
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86 +---------------------------------------------------------------------*/
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87 NPT_Ordinal
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88 PLT_EventSubscriber::GetEventKey()
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89 {
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90 return m_EventKey;
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91 }
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92
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93 /*----------------------------------------------------------------------
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94 | PLT_EventSubscriber::SetEventKey
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95 +---------------------------------------------------------------------*/
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96 NPT_Result
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97 PLT_EventSubscriber::SetEventKey(NPT_Ordinal value)
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98 {
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99 m_EventKey = value;
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100 return NPT_SUCCESS;
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101 }
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102
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103 /*----------------------------------------------------------------------
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104 | PLT_EventSubscriber::GetLocalIf
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105 +---------------------------------------------------------------------*/
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106 NPT_SocketAddress
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107 PLT_EventSubscriber::GetLocalIf()
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108 {
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109 return m_LocalIf;
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110 }
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111
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112 /*----------------------------------------------------------------------
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113 | PLT_EventSubscriber::SetLocalIf
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114 +---------------------------------------------------------------------*/
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115 NPT_Result
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116 PLT_EventSubscriber::SetLocalIf(NPT_SocketAddress value)
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117 {
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118 m_LocalIf = value;
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119 return NPT_SUCCESS;
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120 }
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121
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122 /*----------------------------------------------------------------------
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123 | PLT_EventSubscriber::GetExpirationTime
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124 +---------------------------------------------------------------------*/
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125 // a TimeStamp of 0 means no expiration
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126 NPT_TimeStamp
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127 PLT_EventSubscriber::GetExpirationTime()
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128 {
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129 return m_ExpirationTime;
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130 }
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131
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132 /*----------------------------------------------------------------------
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133 | PLT_EventSubscriber::SetExpirationTime
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134 +---------------------------------------------------------------------*/
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135 NPT_Result
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136 PLT_EventSubscriber::SetTimeout(int timeout /* = -1 */)
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137 {
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138 NPT_LOG_FINE_2("subscriber (%s) expiring in %d seconds",
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139 m_SID.GetChars(),
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140 timeout);
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141
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142 // -1 means infinite so we set an expiration time of 0
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143 if (timeout == -1) {
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144 m_ExpirationTime = NPT_TimeStamp(0, 0);
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145 } else {
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146 NPT_System::GetCurrentTimeStamp(m_ExpirationTime);
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147 m_ExpirationTime += NPT_TimeInterval(timeout, 0);
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148 }
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149 return NPT_SUCCESS;
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150 }
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151
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152 /*----------------------------------------------------------------------
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153 | PLT_EventSubscriber::FindCallbackURL
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154 +---------------------------------------------------------------------*/
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155 NPT_Result
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156 PLT_EventSubscriber::FindCallbackURL(const char* callback_url)
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157 {
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158 NPT_String res;
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159 return NPT_ContainerFind(m_CallbackURLs,
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160 NPT_StringFinder(callback_url),
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161 res);
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162 }
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163
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164 /*----------------------------------------------------------------------
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165 | PLT_EventSubscriber::AddCallbackURL
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166 +---------------------------------------------------------------------*/
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167 NPT_Result
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168 PLT_EventSubscriber::AddCallbackURL(const char* callback_url)
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169 {
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170 NPT_CHECK_POINTER_FATAL(callback_url);
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171
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172 NPT_LOG_FINE_2("Adding callback \"%s\" to subscriber %s",
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173 callback_url,
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174 m_SID.GetChars());
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175 return m_CallbackURLs.Add(callback_url);
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176 }
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177
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178 /*----------------------------------------------------------------------
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179 | PLT_EventSubscriber::Notify
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180 +---------------------------------------------------------------------*/
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181 NPT_Result
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182 PLT_EventSubscriber::Notify(NPT_List<PLT_StateVariable*>& vars)
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183 {
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184 // verify we have eventable variables
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185 bool foundVars = false;
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186 NPT_XmlElementNode* propertyset = new NPT_XmlElementNode("e", "propertyset");
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187 NPT_CHECK_SEVERE(propertyset->SetNamespaceUri("e", "urn:schemas-upnp-org:event-1-0"));
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188
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189 NPT_List<PLT_StateVariable*>::Iterator var = vars.GetFirstItem();
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190 while (var) {
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191 if ((*var)->IsSendingEvents()) {
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192 NPT_XmlElementNode* property = new NPT_XmlElementNode("e", "property");
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193 propertyset->AddChild(property);
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194 PLT_XmlHelper::AddChildText(property, (*var)->GetName(), (*var)->GetValue());
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195 foundVars = true;
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196 }
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197 ++var;
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198 }
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199
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200 // no eventable state variables found!
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201 if (foundVars == false) {
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202 delete propertyset;
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203 return NPT_FAILURE;
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204 }
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205
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206 // format the body with the xml
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207 NPT_String xml;
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208 if (NPT_FAILED(PLT_XmlHelper::Serialize(*propertyset, xml))) {
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209 delete propertyset;
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210 NPT_CHECK_FATAL(NPT_FAILURE);
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211 }
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212 delete propertyset;
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213
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214
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215 // parse the callback url
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216 NPT_HttpUrl url(m_CallbackURLs[0]);
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217 if (!url.IsValid()) {
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218 NPT_CHECK_FATAL(NPT_FAILURE);
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219 }
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220 // format request
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221 NPT_HttpRequest* request = new NPT_HttpRequest(url,
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222 "NOTIFY",
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223 NPT_HTTP_PROTOCOL_1_0);
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224 request->GetHeaders().SetHeader(NPT_HTTP_HEADER_CONNECTION, "keep-alive");
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225
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226 // add the extra headers
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227 PLT_HttpHelper::SetContentType(*request, "text/xml");
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228 PLT_UPnPMessageHelper::SetNT(*request, "upnp:event");
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229 PLT_UPnPMessageHelper::SetNTS(*request, "upnp:propchange");
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230 PLT_UPnPMessageHelper::SetSID(*request, m_SID);
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231 PLT_UPnPMessageHelper::SetSeq(*request, m_EventKey);
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232
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233 // wrap around sequence to 1
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234 if (++m_EventKey == 0) m_EventKey = 1;
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235
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236 PLT_HttpHelper::SetBody(*request, xml);
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237
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238 // start the task now if not started already
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239 if (!m_SubscriberTask) {
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240 m_SubscriberTask = new PLT_HttpClientSocketTask(request, true);
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241 NPT_TimeInterval delay(0.5f);
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242 // delay start to make sure ctrlpoint receives response to subscription
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243 // before our first NOTIFY. Also make sure task is not auto-destroy
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244 // since we want to destroy it ourselves when the subscriber goes away.
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245 NPT_CHECK_FATAL(m_TaskManager->StartTask(m_SubscriberTask, &delay, false));
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246 } else {
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247 m_SubscriberTask->AddRequest(request);
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248 }
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249
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250 return NPT_SUCCESS;
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251 }
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252
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253 /*----------------------------------------------------------------------
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254 | PLT_EventSubscriberFinderByService::operator()
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255 +---------------------------------------------------------------------*/
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256 bool
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257 PLT_EventSubscriberFinderByService::operator()(PLT_EventSubscriber* const & eventSub) const
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258 {
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259 return m_Service->GetDevice()->GetUUID().Compare(
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260 eventSub->GetService()->GetDevice()->GetUUID(), true) ? false : true;
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261 }