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1 // Copyright (c) 2003-2009 Nokia Corporation and/or its subsidiary(-ies). |
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2 // All rights reserved. |
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3 // This component and the accompanying materials are made available |
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4 // under the terms of "Eclipse Public License v1.0" |
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5 // which accompanies this distribution, and is available |
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6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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7 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: |
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14 // |
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15 |
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16 #include <x509cert.h> |
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17 |
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18 #include "chttprequestbatcher.h" |
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19 |
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20 |
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21 const TInt KBatchingTimeoutMicroSeconds = 100000; |
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22 |
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23 |
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24 CHttpRequestBatcher* CHttpRequestBatcher::NewL(MOutputStream& aOutputStream, const TInt aBufferSize) |
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25 { |
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26 CHttpRequestBatcher* self = new (ELeave) CHttpRequestBatcher(aOutputStream, aBufferSize); |
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27 CleanupStack::PushL(self); |
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28 self->ConstructL(); |
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29 CleanupStack::Pop(self); |
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30 return self; |
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31 } |
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32 |
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33 CHttpRequestBatcher::CHttpRequestBatcher(MOutputStream& aOutputStream, const TInt aBufferSize) |
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34 : CActive(CActive::EPriorityStandard + 1), iDataToSend(TPtr8(NULL, 0)), iExcessData(TPtrC8(NULL, 0)), iMaxBufferSize(aBufferSize) |
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35 { |
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36 __FLOG_OPEN("http", "httpclienthandler.txt"); |
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37 |
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38 CActiveScheduler::Add(this); |
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39 iOutputStream = &aOutputStream; |
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40 iOutputStream->Bind(*this); |
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41 |
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42 iFuncPtr = &CHttpRequestBatcher::SendRequestImmediatelyL; |
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43 } |
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44 |
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45 void CHttpRequestBatcher::ConstructL() |
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46 { |
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47 iBuffer = HBufC8::NewL(iMaxBufferSize); |
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48 iDataToSend.Set(iBuffer->Des()); |
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49 |
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50 iTimer.CreateLocal(); |
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51 iTimerCompleted = EFalse; |
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52 |
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53 } |
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54 |
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55 |
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56 CHttpRequestBatcher::~CHttpRequestBatcher() |
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57 { |
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58 Cancel(); |
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59 delete iBuffer; |
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60 iTimer.Close(); |
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61 |
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62 __FLOG_CLOSE; |
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63 } |
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64 |
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65 |
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66 void CHttpRequestBatcher::SendRequestImmediatelyL(const TDesC8& aBuffer) |
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67 { |
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68 #if defined (_DEBUG) && defined (_LOGGING) |
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69 __FLOG_0(_T8("!! Send the first request i.e. not batching")); |
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70 #endif |
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71 |
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72 iOutputStream->SendDataReqL(aBuffer); |
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73 } |
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74 |
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75 void CHttpRequestBatcher::SendRequestsBatchedL(const TDesC8& aBuffer) |
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76 { |
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77 StartTimer(); |
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78 |
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79 BatchRequestsL(aBuffer); |
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80 } |
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81 |
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82 void CHttpRequestBatcher::BatchRequestsL(const TDesC8& aBuffer) |
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83 { |
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84 if (iTimerCompleted) |
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85 iExcessData.Set(aBuffer); |
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86 |
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87 else if ((aBuffer.Length() + iDataToSend.Length()) < iMaxBufferSize) |
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88 { |
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89 iDataToSend.Append(aBuffer); |
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90 |
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91 // Buffer is not yet full, so request observer to send more data |
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92 iObserver->SendDataCnfL(); |
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93 } |
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94 else |
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95 { |
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96 TInt pos = iMaxBufferSize - iDataToSend.Length(); |
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97 |
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98 // Fill up the buffer |
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99 iDataToSend.Append(aBuffer.Left(pos)); |
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100 |
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101 // Cancel the timer |
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102 Cancel(); |
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103 |
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104 #if defined (_DEBUG) && defined (_LOGGING) |
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105 __FLOG_0(_T8("!! Buffer has been filled - cancel timer and send batched requests now")); |
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106 #endif |
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107 |
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108 // Send the request with a filled-up buffer |
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109 iOutputStream->SendDataReqL(iDataToSend); |
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110 |
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111 // Save the excess data from this request |
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112 iExcessData.Set(aBuffer.Mid(pos)); |
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113 } |
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114 } |
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115 |
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116 void CHttpRequestBatcher::StartTimer() |
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117 { |
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118 if(!IsActive()) |
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119 { |
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120 #if defined (_DEBUG) && defined (_LOGGING) |
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121 __FLOG_0(_T8("!! Start the batching timer")); |
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122 #endif |
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123 |
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124 SetActive(); |
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125 iTimer.After(iStatus, KBatchingTimeoutMicroSeconds); |
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126 } |
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127 } |
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128 |
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129 |
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130 /* |
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131 * Methods from MOutputStream |
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132 */ |
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133 |
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134 void CHttpRequestBatcher::Bind(MOutputStreamObserver& aObserver) |
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135 { |
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136 // Bind to the output stream observer |
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137 iObserver = &aObserver; |
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138 } |
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139 |
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140 void CHttpRequestBatcher::SendDataReqL(const TDesC8& aBuffer) |
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141 { |
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142 // Call the appropriate function depending on what the function pointer has been set to. |
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143 // For the first request, the pointer will be set to the SendRequestImmediately() function. |
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144 // For subsequent requests, i.e. when batching, the pointer will be set to the |
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145 // SendRequestsBatched() function. |
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146 |
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147 (*this.*iFuncPtr)(aBuffer); |
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148 } |
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149 |
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150 void CHttpRequestBatcher::ShutdownReq() |
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151 { |
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152 iOutputStream->ShutdownReq(); |
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153 } |
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154 |
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155 void CHttpRequestBatcher::SecureClientReq(const TDesC8& aHostName) |
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156 { |
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157 iOutputStream->SecureClientReq(aHostName); |
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158 } |
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159 |
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160 void CHttpRequestBatcher::Close() |
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161 { |
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162 iOutputStream->Close(); |
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163 } |
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164 |
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165 const CX509Certificate* CHttpRequestBatcher::ServerCert() |
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166 { |
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167 return iOutputStream->ServerCert(); |
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168 } |
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169 |
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170 TInt CHttpRequestBatcher::CipherSuite(TDes8& aCipherSuite) |
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171 { |
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172 return iOutputStream->CipherSuite(aCipherSuite); |
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173 } |
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174 |
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175 void CHttpRequestBatcher::MOutputStream_Reserved() |
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176 { |
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177 User::Invariant(); |
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178 } |
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179 |
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180 void CHttpRequestBatcher::Reset () |
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181 { |
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182 iOutputStream->Reset (); |
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183 } |
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184 |
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185 /* |
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186 * Methods from MOutputStreamObserver |
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187 */ |
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188 |
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189 void CHttpRequestBatcher::SendDataCnfL() |
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190 { |
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191 // If this is the first request send a confirmation to the observer that the data |
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192 // has been sent and then set the function pointer to the SendRequestBatched() method. |
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193 if (iFuncPtr == &CHttpRequestBatcher::SendRequestImmediatelyL) |
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194 { |
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195 #if defined (_DEBUG) && defined (_LOGGING) |
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196 __FLOG_0(_T8("!! Received conf back for first request i.e. not batching")); |
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197 #endif |
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198 |
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199 iObserver->SendDataCnfL(); |
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200 iFuncPtr = &CHttpRequestBatcher::SendRequestsBatchedL; |
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201 } |
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202 |
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203 // If the timer did not complete then by implication a filled-up buffer was sent in the request. |
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204 else if (!iTimerCompleted) |
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205 { |
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206 #if defined (_DEBUG) && defined (_LOGGING) |
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207 __FLOG_0(_T8("!! Received conf back for batched requests")); |
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208 #endif |
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209 |
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210 iDataToSend.Zero(); |
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211 HandleExcessDataL(); |
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212 } |
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213 else // Timer did complete |
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214 { |
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215 iDataToSend.Zero(); |
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216 |
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217 // Check for any requests that may have been sent by the observer after the RunL fired |
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218 // i.e. the timer completed, but before we received a conf from the output stream. |
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219 if (iExcessData.Length() > 0) |
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220 HandleExcessDataL(); |
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221 |
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222 // Reset the flag |
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223 iTimerCompleted = EFalse; |
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224 } |
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225 } |
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226 |
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227 void CHttpRequestBatcher::HandleExcessDataL() |
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228 { |
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229 if (iExcessData.Length() > iMaxBufferSize) |
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230 { |
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231 #if defined (_DEBUG) && defined (_LOGGING) |
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232 __FLOG_0(_T8("!! Handling excess data - have enough data to fill up another buffer so send it")); |
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233 #endif |
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234 |
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235 // It's possible that the excess data is larger than the maximum allowable size of the buffer in |
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236 // which case this excess data is used to fill up another buffer and a request made. |
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237 iDataToSend.Append(iExcessData.Left(iMaxBufferSize)); |
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238 iOutputStream->SendDataReqL(iDataToSend); |
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239 iExcessData.Set(iExcessData.Mid(iMaxBufferSize)); |
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240 } |
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241 else |
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242 { |
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243 // Not enough data to fill up a buffer therefore store the data |
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244 iDataToSend.Append(iExcessData); |
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245 iExcessData.Set(KNullDesC8()); |
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246 iObserver->SendDataCnfL(); |
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247 |
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248 #if defined (_DEBUG) && defined (_LOGGING) |
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249 __FLOG_0(_T8("!! Handling excess data - but not enough data to fill up buffer")); |
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250 #endif |
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251 |
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252 // start the timer again |
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253 StartTimer(); |
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254 } |
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255 } |
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256 |
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257 |
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258 void CHttpRequestBatcher::SecureClientCnf() |
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259 { |
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260 iObserver->SecureClientCnf(); |
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261 } |
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262 |
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263 void CHttpRequestBatcher::OutputStreamCloseInd(TInt aError) |
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264 { |
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265 Cancel(); |
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266 iObserver->OutputStreamCloseInd(aError); |
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267 } |
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268 |
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269 void CHttpRequestBatcher::MOutputStreamObserver_Reserved() |
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270 { |
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271 User::Invariant(); |
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272 } |
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273 |
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274 |
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275 /* |
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276 * Methods from CActive |
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277 */ |
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278 |
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279 void CHttpRequestBatcher::RunL() |
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280 { |
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281 if (iDataToSend.Length() > 0) |
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282 { |
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283 #if defined (_DEBUG) && defined (_LOGGING) |
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284 __FLOG_0(_T8("!! Timer has completed before buffer has been filled - send request now")); |
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285 #endif |
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286 |
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287 // Timer has completed before the buffer has been filled, therefore send the request now. |
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288 iOutputStream->SendDataReqL(iDataToSend); |
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289 } |
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290 iTimerCompleted = ETrue; |
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291 } |
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292 |
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293 void CHttpRequestBatcher::DoCancel() |
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294 { |
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295 iTimer.Cancel(); |
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296 } |
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297 |
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298 TInt CHttpRequestBatcher::RunError(TInt /*aError*/) |
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299 { |
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300 // The RunL() cannot leave - nothing to do here. |
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301 return KErrNone; |
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302 } |
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303 |
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304 void CHttpRequestBatcher::OnSendTimeOut() |
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305 { |
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306 iObserver->OnSendTimeOut(); |
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307 } |
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308 |
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309 TInt CHttpRequestBatcher::SendTimeOutVal() |
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310 { |
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311 return iObserver->SendTimeOutVal(); |
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312 } |
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313 |
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314 void CHttpRequestBatcher::SetTCPCorking(TBool /* aValue */) |
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315 { |
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316 |
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317 } |
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318 |
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319 |