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1 /** @file |
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2 * Copyright (c) 2005-2006 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 "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: CUpnpTcpSessionReader is a class responsible for |
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15 * asynchronous reading from socket owned by CUpnpTcpSession. |
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16 * |
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17 */ |
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18 |
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19 |
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20 |
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21 #include "upnptcpsession.h" |
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22 #include "upnptcpsessionreader.h" |
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23 #define KLogFile _L("DLNAWebServer.txt") |
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24 #include "upnpcustomlog.h" |
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25 #include "inet6err.h" |
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26 |
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27 static const TInt KMaxRetryErrors = 5; |
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28 static const TInt KRetryWaitTime = 1000000; |
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29 static const TInt KTwoSec = 2000000; |
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30 static const TInt KOneSec = 1000000; |
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31 |
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32 |
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33 // ======== MEMBER FUNCTIONS ======== |
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34 |
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35 // --------------------------------------------------------------------------- |
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36 // CUpnpTcpSessionReader::NewL |
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37 // Factory method. |
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38 // --------------------------------------------------------------------------- |
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39 // |
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40 CUpnpTcpSessionReader* CUpnpTcpSessionReader::NewL( CUpnpTcpSession& aSession, |
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41 RSocket& aSocket, |
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42 TThreadPriority aPriority, |
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43 TInt aBufferSize ) |
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44 { |
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45 CUpnpTcpSessionReader* self = new ( ELeave ) |
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46 CUpnpTcpSessionReader( aSession, aSocket, aPriority, aBufferSize ); |
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47 CleanupStack::PushL( self ); |
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48 self->ConstructL(); |
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49 CleanupStack::Pop( self ); |
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50 return self; |
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51 } |
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52 |
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53 // --------------------------------------------------------------------------- |
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54 // CUpnpTcpSessionReader::CUpnpTcpSessionReader |
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55 // C++ constructor. |
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56 // --------------------------------------------------------------------------- |
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57 // |
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58 CUpnpTcpSessionReader::CUpnpTcpSessionReader( CUpnpTcpSession& aSession, |
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59 RSocket& aSocket, |
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60 TThreadPriority aPriority, |
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61 TInt aBufferSize ) |
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62 :CActive( aPriority ), |
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63 iSocket( aSocket ), |
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64 iSession( aSession ), |
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65 iBufferSize( aBufferSize ) |
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66 { |
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67 LOGS1( "%i, CUpnpTcpSessionReader::CUpnpTcpSessionReader", iSession.Id() ); |
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68 |
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69 } |
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70 |
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71 // --------------------------------------------------------------------------- |
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72 // CUpnpTcpSessionReader::TcpConstructL |
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73 // Two-phased constructor |
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74 // constructor that can leave. Used from derived classes. |
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75 // --------------------------------------------------------------------------- |
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76 // |
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77 void CUpnpTcpSessionReader::ConstructL() |
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78 { |
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79 CActiveScheduler::Add( this ); |
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80 |
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81 iReceiveBuffer.CreateL( iBufferSize ); |
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82 |
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83 iRetryTimer = CUpnpNotifyTimer::NewL( this ); |
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84 iCancelTimer = CUpnpNotifyTimer::NewL( this ); |
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85 } |
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86 |
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87 // --------------------------------------------------------------------------- |
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88 // CUpnpTcpSessionReader::~CUpnpTcpSessionReader |
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89 // Destructor. |
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90 // --------------------------------------------------------------------------- |
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91 // |
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92 CUpnpTcpSessionReader::~CUpnpTcpSessionReader() |
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93 { |
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94 LOGS1( "%i, CUpnpTcpSessionReader::~CUpnpTcpSessionReader", iSession.Id() ); |
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95 Cancel(); |
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96 |
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97 iReceiveBuffer.Close(); |
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98 |
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99 delete iRetryTimer; |
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100 delete iCancelTimer; |
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101 } |
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102 |
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103 // --------------------------------------------------------------------------- |
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104 // CUpnpTcpSessionReader::Start |
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105 // Starts reading. |
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106 // --------------------------------------------------------------------------- |
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107 // |
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108 void CUpnpTcpSessionReader::Start() |
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109 { |
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110 LOGS1( "%i, CUpnpTcpSessionReader::Start", iSession.Id() ); |
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111 // Initiate a new read from socket into iBuffer |
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112 if ( !IsActive() ) |
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113 { |
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114 IssueRead(); |
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115 } |
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116 } |
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117 |
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118 // --------------------------------------------------------------------------- |
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119 // CUpnpTcpSessionReader::DoCancel |
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120 // From class CActive. |
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121 // Cancels issued reading. |
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122 // --------------------------------------------------------------------------- |
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123 // |
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124 void CUpnpTcpSessionReader::DoCancel() |
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125 { |
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126 LOGS1( "%i, CUpnpTcpSessionReader::DoCancel", iSession.Id() ); |
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127 // Cancel asychronous read request |
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128 iSocket.CancelRead(); |
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129 } |
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130 |
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131 // --------------------------------------------------------------------------- |
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132 // CUpnpTcpSessionReader::CancelRetry |
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133 // --------------------------------------------------------------------------- |
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134 // |
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135 void CUpnpTcpSessionReader::CancelTimers() |
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136 { |
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137 iRetryTimer->Cancel(); |
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138 iCancelTimer->Cancel(); |
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139 } |
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140 |
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141 // --------------------------------------------------------------------------- |
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142 // CUpnpTcpSessionReader::RunL |
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143 // From class CActive. |
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144 // Function is called as a callback when the issued reading is completed. |
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145 // --------------------------------------------------------------------------- |
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146 // |
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147 void CUpnpTcpSessionReader::RunL() |
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148 { |
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149 LOGS2( "%i, CUpnpTcpSessionReader::RunL(), iStatus %i", |
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150 iSession.Id(), iStatus.Int() ); |
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151 |
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152 // Active object request complete handler |
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153 switch ( iStatus.Int() ) |
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154 { |
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155 case KErrNone: |
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156 iRetryErrorCount = 0; |
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157 iCancelTimer->Cancel(); |
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158 |
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159 // Forward read data to HTTPSession |
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160 iSession.ReceivingCompletedL( iReceiveBuffer ); |
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161 break; |
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162 |
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163 case KErrCancel: |
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164 if(iCancelFromTimer) |
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165 { |
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166 IssueRead(); |
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167 iCancelFromTimer = EFalse; |
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168 } |
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169 break; |
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170 |
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171 case KErrNoMemory: |
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172 case KErrNotReady: |
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173 case KErrInet6AddressExpired: |
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174 if( iRetryErrorCount < KMaxRetryErrors ) |
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175 { |
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176 iRetryTimer->Cancel(); |
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177 iRetryTimer->After( KRetryWaitTime * ++iRetryErrorCount, EFalse ); |
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178 break; |
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179 } |
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180 |
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181 default: |
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182 iSession.HandleErrorL( iStatus.Int() ); |
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183 break; |
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184 } |
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185 } |
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186 // ----------------------------------------------------------------------------- |
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187 // CUpnpTcpSessionWriter::RunError |
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188 // RunError is called when RunL leaves. |
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189 // ----------------------------------------------------------------------------- |
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190 // |
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191 TInt CUpnpTcpSessionReader::RunError( TInt aError ) |
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192 { |
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193 LOGS2( "%i, CUpnpTcpSessionReader::RunError - %d" |
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194 , iSession.Id(), aError); |
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195 return KErrNone; |
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196 } |
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197 |
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198 // ----------------------------------------------------------------------------- |
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199 // CUpnpTcpSessionReader::TimerEventL |
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200 // Retry read |
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201 // ----------------------------------------------------------------------------- |
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202 // |
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203 void CUpnpTcpSessionReader::TimerEventL( CUpnpNotifyTimer* aTimer ) |
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204 { |
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205 if( aTimer == iCancelTimer ) |
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206 { |
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207 iCancelFromTimer = ETrue; |
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208 iSocket.CancelRecv(); |
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209 } |
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210 else if( aTimer == iRetryTimer ) |
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211 { |
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212 IssueRead(); |
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213 } |
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214 } |
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215 |
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216 // ----------------------------------------------------------------------------- |
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217 // CUpnpTcpSessionReader::StartCancelTimer |
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218 // ----------------------------------------------------------------------------- |
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219 // |
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220 void CUpnpTcpSessionReader::StartCancelTimer() |
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221 { |
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222 TInt timeout = iSession.TimeoutCurrentValue(); |
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223 iCancelTimer->Cancel(); |
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224 |
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225 timeout = timeout/2 - KTwoSec; |
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226 if( timeout <= 0 ) timeout = KOneSec; |
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227 |
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228 iCancelTimer->After( timeout, EFalse ); |
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229 iCancelFromTimer = EFalse; |
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230 } |
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231 |
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232 // --------------------------------------------------------------------------- |
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233 // CUpnpTcpSessionReader::IssueRead |
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234 // Issues reading. |
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235 // --------------------------------------------------------------------------- |
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236 // |
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237 void CUpnpTcpSessionReader::IssueRead() |
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238 { |
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239 LOGS1( "%i, CUpnpTcpSessionReader::IssueRead", iSession.Id()); |
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240 // Initiate a new read from socket into iBuffer |
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241 if( IsActive() ) |
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242 { |
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243 LOGS1( "%i, PANIC: CUpnpTcpSessionReader::IssueRead!", iSession.Id() ); |
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244 User::Panic( _L("CUpnpTcpSessionReader is active" ), KErrGeneral ); |
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245 } |
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246 |
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247 if( iSession.IsConnected() ) |
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248 { |
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249 LOGS1( "%i, CUpnpTcpSessionReader::IssueRead" |
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250 , iSession.Id()); |
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251 |
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252 Deque(); |
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253 CActiveScheduler::Add(this); |
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254 |
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255 iReceiveBuffer.Zero(); |
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256 |
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257 StartCancelTimer(); |
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258 |
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259 iSocket.RecvOneOrMore( iReceiveBuffer, 0, iStatus, iLen ); |
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260 SetActive(); |
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261 } |
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262 } |
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263 |
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264 |
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265 // End of File |