1 /* |
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2 * Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of the License "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: Implementation of CPushMtmCacheSupply |
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15 * |
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16 */ |
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17 |
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18 |
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19 // INCLUDE FILES |
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20 #include "PushMtmCacheSupply.h" |
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21 #include "httpcachemanager.h" |
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22 #include "PushMtmCacheDataSupplier.h" |
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23 |
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24 #include <http/RHTTPTransaction.h> |
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25 #include <http/mhttpdatasupplier.h> |
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26 #include <http/rhttpsession.h> |
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27 #include <httperr.h> |
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28 |
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29 |
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30 // EXTERNAL DATA STRUCTURES |
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31 |
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32 // EXTERNAL FUNCTION PROTOTYPES |
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33 |
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34 // CONSTANTS |
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35 const TInt KResponseTimeout = 0; |
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36 |
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37 // MACROS |
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38 |
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39 // LOCAL CONSTANTS AND MACROS |
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40 |
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41 // MODULE DATA STRUCTURES |
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42 |
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43 // LOCAL FUNCTION PROTOTYPES |
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44 |
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45 // FORWARD DECLARATIONS |
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46 |
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47 // ============================= LOCAL FUNCTIONS =============================== |
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48 |
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49 |
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50 // ============================ MEMBER FUNCTIONS =============================== |
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51 |
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52 // ----------------------------------------------------------------------------- |
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53 // CPushMtmCacheSupply::CPushMtmCacheSupply |
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54 // C++ default constructor can NOT contain any code, that |
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55 // might leave. |
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56 // ----------------------------------------------------------------------------- |
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57 // |
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58 CPushMtmCacheSupply::CPushMtmCacheSupply(MCacheSupplyCallbacks* aCacheSupplyCallbacks ): |
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59 // closed by default |
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60 iReponseState( THTTPEvent::EClosed ) |
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61 { |
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62 iCacheEntry.iCacheHandler = NULL; |
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63 iCacheEntry.iCacheEntry = NULL; |
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64 iCacheSupplyCallbacks = aCacheSupplyCallbacks; |
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65 } |
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66 |
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67 // ----------------------------------------------------------------------------- |
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68 // CPushMtmCacheSupply::ConstructL |
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69 // Symbian 2nd phase constructor can leave. |
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70 // ----------------------------------------------------------------------------- |
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71 // |
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72 void CPushMtmCacheSupply::ConstructL(CHttpCacheManager* aCacheMgr) |
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73 { |
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74 iCacheManager = aCacheMgr; |
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75 } |
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76 |
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77 // ----------------------------------------------------------------------------- |
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78 // CPushMtmCacheSupply::NewL |
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79 // Two-phased constructor. |
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80 // ----------------------------------------------------------------------------- |
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81 // |
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82 CPushMtmCacheSupply* CPushMtmCacheSupply::NewL(CHttpCacheManager* aCacheMgr, MCacheSupplyCallbacks* aCacheSupplyCallbacks ) |
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83 { |
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84 CPushMtmCacheSupply* self = new( ELeave ) CPushMtmCacheSupply( aCacheSupplyCallbacks); |
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85 |
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86 CleanupStack::PushL( self ); |
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87 self->ConstructL(aCacheMgr); |
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88 CleanupStack::Pop(); |
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89 |
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90 return self; |
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91 } |
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92 |
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93 // Destructor |
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94 CPushMtmCacheSupply::~CPushMtmCacheSupply() |
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95 { |
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96 delete iDataSupplier; |
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97 CloseRequest(); |
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98 if (iResponseTimer) |
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99 { |
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100 iResponseTimer->Cancel(); |
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101 } |
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102 delete iResponseTimer; |
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103 } |
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104 |
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105 // ----------------------------------------------------------------------------- |
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106 // CPushMtmCacheSupply::StartRequestL |
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107 // |
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108 // |
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109 // ----------------------------------------------------------------------------- |
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110 // |
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111 TInt CPushMtmCacheSupply::StartRequestL( ) |
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112 { |
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113 TInt status; |
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114 |
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115 status = iCacheManager->RequestL( *(iCacheSupplyCallbacks->Transaction()), |
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116 TBrCtlDefs::ECacheModeNormal , iCacheEntry ); |
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117 // start a timer that feeds the content to the transaction |
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118 if( status == KErrNone ) |
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119 { |
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120 iClosed = EFalse; |
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121 // set response state. start with the http headers. |
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122 iReponseState = THTTPEvent::EGotResponseHeaders; |
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123 // |
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124 iResponseTimer = CPeriodic::NewL( CActive::EPriorityHigh ); |
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125 iResponseTimer->Start( KResponseTimeout, KResponseTimeout, TCallBack( &ResponseCallbackL, this ) ); |
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126 } |
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127 return status; |
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128 } |
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129 |
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130 // ----------------------------------------------------------------------------- |
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131 // CPushMtmCacheSupply::CloseRequest |
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132 // |
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133 // |
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134 // ----------------------------------------------------------------------------- |
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135 // |
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136 void CPushMtmCacheSupply::CloseRequest() |
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137 { |
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138 if( !iClosed ) |
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139 { |
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140 iCacheManager->RequestClosed( (iCacheSupplyCallbacks->Transaction()), iCacheEntry ); |
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141 iClosed = ETrue; |
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142 } |
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143 } |
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144 |
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145 // ----------------------------------------------------------------------------- |
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146 // CPushMtmCacheSupply::HeadersReceived |
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147 // |
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148 // |
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149 // ----------------------------------------------------------------------------- |
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150 // |
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151 void CPushMtmCacheSupply::HeadersReceivedL() |
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152 { |
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153 // do not cache content we just sent off |
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154 if( iReponseState == THTTPEvent::EClosed ) |
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155 { |
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156 RHTTPTransaction* trans = iCacheSupplyCallbacks->Transaction(); |
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157 iCacheManager->ReceivedResponseHeadersL( *(iCacheSupplyCallbacks->Transaction()), iCacheEntry ); |
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158 // |
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159 iNotModified = trans->Response().StatusCode() == HTTPStatus::ENotModified; |
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160 if( iNotModified ) |
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161 { |
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162 // change from 304 to 200 -otherwise trans exits with EFailed |
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163 trans->Response().SetStatusCode( HTTPStatus::EOk ); |
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164 } |
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165 } |
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166 } |
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167 |
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168 // ----------------------------------------------------------------------------- |
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169 // CPushMtmCacheSupply::BodyReceivedL |
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170 // |
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171 // |
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172 // ----------------------------------------------------------------------------- |
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173 // |
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174 void CPushMtmCacheSupply::BodyReceivedL() |
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175 { |
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176 // do not cache content we just sent off |
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177 if( iReponseState == THTTPEvent::EClosed ) |
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178 { |
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179 RHTTPTransaction* trans = iCacheSupplyCallbacks->Transaction(); |
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180 MHTTPDataSupplier* supplier = trans->Response().Body(); |
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181 // |
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182 iCacheManager->ReceivedResponseBodyDataL( *trans, *supplier, iCacheEntry ); |
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183 } |
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184 } |
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185 |
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186 // ----------------------------------------------------------------------------- |
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187 // CPushMtmCacheSupply::ResponseComplete |
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188 // |
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189 // |
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190 // ----------------------------------------------------------------------------- |
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191 // |
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192 void CPushMtmCacheSupply::ResponseCompleteL() |
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193 { |
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194 if( iReponseState == THTTPEvent::EClosed ) |
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195 { |
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196 RHTTPTransaction* trans = iCacheSupplyCallbacks->Transaction(); |
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197 // not modified needs body before response complete |
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198 if( iNotModified ) |
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199 { |
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200 // use cache |
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201 // close response first |
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202 iCacheManager->ResponseComplete( *trans, iCacheEntry ); |
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203 // request the item from cache |
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204 if( iCacheManager->RequestL( *trans, TBrCtlDefs::ECacheModeOnlyCache, iCacheEntry ) == KErrNone ) |
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205 { |
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206 // ser |
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207 iReponseState = THTTPEvent::EGotResponseBodyData; |
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208 // |
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209 SendBodyL(); |
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210 CloseRequest(); |
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211 } |
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212 } |
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213 else |
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214 { |
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215 // normal response complete |
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216 iCacheManager->ResponseComplete( *trans, iCacheEntry ); |
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217 } |
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218 } |
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219 } |
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220 |
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221 // ----------------------------------------------------------------------------- |
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222 // CPushMtmCacheSupply::ResponseCallbackL |
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223 // |
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224 // |
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225 // ----------------------------------------------------------------------------- |
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226 // |
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227 TInt CPushMtmCacheSupply::ResponseCallbackL( |
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228 TAny* aAny ) |
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229 { |
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230 // |
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231 CPushMtmCacheSupply* thisObj = (CPushMtmCacheSupply*)aAny; |
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232 thisObj->SupplyResponseL(); |
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233 return KErrNone; |
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234 } |
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235 |
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236 // ----------------------------------------------------------------------------- |
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237 // CPushMtmCacheSupply::SupplyResponseL |
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238 // |
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239 // |
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240 // ----------------------------------------------------------------------------- |
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241 // |
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242 void CPushMtmCacheSupply::SupplyResponseL() |
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243 { |
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244 RHTTPTransaction* trans = iCacheSupplyCallbacks->Transaction(); |
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245 // |
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246 switch( iReponseState ) |
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247 { |
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248 case THTTPEvent::EGotResponseHeaders: |
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249 { |
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250 // |
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251 iFailed = EFalse; |
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252 if( iCacheManager->RequestHeadersL( *trans, iCacheEntry ) == KErrNone ) |
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253 { |
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254 // |
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255 trans->Response().SetStatusCode( HTTPStatus::EOk ); |
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256 // |
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257 iCacheSupplyCallbacks->HandleEventL( THTTPEvent::EGotResponseHeaders ); |
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258 // move to the next state |
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259 iReponseState = THTTPEvent::EGotResponseBodyData; |
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260 } |
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261 else |
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262 { |
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263 // move to the next state |
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264 iFailed = ETrue; |
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265 // move to the next state |
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266 iReponseState = THTTPEvent::EResponseComplete; |
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267 } |
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268 break; |
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269 } |
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270 case THTTPEvent::EGotResponseBodyData: |
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271 { |
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272 // |
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273 SendBodyL(); |
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274 // move to the next state |
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275 iReponseState = THTTPEvent::EResponseComplete; |
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276 break; |
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277 } |
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278 case THTTPEvent::EResponseComplete: |
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279 { |
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280 iCacheSupplyCallbacks->HandleEventL( THTTPEvent::EResponseComplete ); |
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281 // move to the next state |
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282 iReponseState = !iFailed ? THTTPEvent::ESucceeded : THTTPEvent::EFailed; |
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283 break; |
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284 } |
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285 case THTTPEvent::ESucceeded: |
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286 { |
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287 // move to the next state |
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288 iReponseState = THTTPEvent::EClosed; |
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289 // cancel timer |
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290 iResponseTimer->Cancel(); |
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291 // |
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292 iCacheSupplyCallbacks->HandleEventL( THTTPEvent::ESucceeded ); |
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293 // this obj is destroyed at this point |
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294 break; |
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295 } |
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296 case THTTPEvent::EFailed: |
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297 { |
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298 // move to the next state |
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299 iReponseState = THTTPEvent::EClosed; |
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300 // cancel timer |
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301 iResponseTimer->Cancel(); |
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302 // |
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303 iCacheSupplyCallbacks->HandleEventL( THTTPEvent::EFailed ); |
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304 // this obj is destroyed at this point |
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305 break; |
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306 } |
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307 default: |
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308 { |
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309 // |
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310 } |
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311 } |
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312 } |
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313 |
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314 // ----------------------------------------------------------------------------- |
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315 // CPushMtmCacheSupply::SendBodyL |
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316 // |
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317 // |
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318 // ----------------------------------------------------------------------------- |
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319 // |
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320 void CPushMtmCacheSupply::SendBodyL() |
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321 { |
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322 RHTTPTransaction* trans = iCacheSupplyCallbacks->Transaction(); |
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323 // |
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324 TBool lastChunk; |
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325 // currently it is always the last chunk |
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326 HBufC8* body = iCacheManager->RequestNextChunkL( *trans, lastChunk, iCacheEntry ); |
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327 if( body ) |
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328 { |
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329 CleanupStack::PushL( body ); |
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330 // create datasupplier and attach it to the transaction |
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331 if( !iDataSupplier ) |
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332 iDataSupplier = CPushMtmCacheDataSupplier::NewL( body ); |
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333 trans->Response().SetBody( *iDataSupplier ); |
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334 CleanupStack::Pop(); // body |
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335 // |
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336 iCacheSupplyCallbacks->HandleEventL( THTTPEvent::EGotResponseBodyData ); |
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337 } |
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338 else |
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339 { |
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340 // move to the next state |
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341 iFailed = ETrue; |
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342 } |
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343 } |
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344 |
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345 // ----------------------------------------------------------------------------- |
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346 // CPushMtmCacheSupply::PauseSupply |
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347 // ----------------------------------------------------------------------------- |
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348 void CPushMtmCacheSupply::PauseSupply() |
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349 { |
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350 if( iResponseTimer && iResponseTimer->IsActive() ) |
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351 iResponseTimer->Cancel(); |
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352 } |
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353 |
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354 // ----------------------------------------------------------------------------- |
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355 // CPushMtmCacheSupply::ResumeSupply |
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356 // ----------------------------------------------------------------------------- |
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357 void CPushMtmCacheSupply::ResumeSupply() |
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358 { |
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359 if( iResponseTimer && !iResponseTimer->IsActive() ) |
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360 iResponseTimer->Start( KResponseTimeout, KResponseTimeout, TCallBack( &ResponseCallbackL, this ) ); |
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361 } |
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362 |
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363 // End of File |
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