1 /* |
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2 * Copyright (c) 2009 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: Socket writer |
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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 |
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20 // INCLUDE FILES |
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21 #include "CSocketWriter.h" |
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22 #include "MSocketWriterObserver.h" |
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23 #include <in_sock.h> |
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24 #include <badesca.h> |
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25 |
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26 #define DEBUG_FILENAME "IPProxyEngine.log" |
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27 #include "DebugPrint.h" |
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28 |
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29 |
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30 const TInt KServerBusyWaiting = 200000; //200 ms delay |
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31 |
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32 // ============================ MEMBER FUNCTIONS =============================== |
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33 |
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34 // ----------------------------------------------------------------------------- |
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35 // CSocketWriter::CSocketWriter |
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36 // ----------------------------------------------------------------------------- |
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37 // |
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38 CSocketWriter::CSocketWriter( RSocket& aSocket, |
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39 TInt aUDPRemotePort /*= -1*/ ) : |
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40 CActive( EPriorityStandard ), |
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41 iSocket( aSocket ), |
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42 iUDPRemotePort( aUDPRemotePort ) |
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43 { |
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44 } |
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45 |
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46 // ----------------------------------------------------------------------------- |
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47 // CSocketWriter::ConstructL |
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48 // ----------------------------------------------------------------------------- |
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49 // |
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50 void CSocketWriter::ConstructL() |
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51 { |
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52 iTransferBufferArray = new (ELeave) CDesC8ArraySeg( 10 ); |
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53 User::LeaveIfError( iTimer.CreateLocal() ); |
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54 CActiveScheduler::Add( this ); |
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55 } |
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56 |
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57 // ----------------------------------------------------------------------------- |
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58 // CSocketWriter::NewL |
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59 // ----------------------------------------------------------------------------- |
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60 // |
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61 CSocketWriter* CSocketWriter::NewL( RSocket& aSocket, |
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62 TInt aUDPRemotePort /* = -1 */ ) |
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63 { |
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64 CSocketWriter* self = CSocketWriter::NewLC( aSocket, |
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65 aUDPRemotePort ); |
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66 CleanupStack::Pop(); |
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67 |
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68 return self; |
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69 } |
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70 |
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71 // ----------------------------------------------------------------------------- |
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72 // CSocketWriter::NewLC |
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73 // ----------------------------------------------------------------------------- |
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74 // |
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75 CSocketWriter* CSocketWriter::NewLC( RSocket& aSocket, |
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76 TInt aUDPRemotePort /* = -1 */ ) |
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77 { |
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78 CSocketWriter* self = new( ELeave ) CSocketWriter( aSocket, |
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79 aUDPRemotePort ); |
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80 CleanupStack::PushL( self ); |
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81 |
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82 self->ConstructL(); |
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83 return self; |
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84 } |
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85 |
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86 |
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87 // Destructor |
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88 CSocketWriter::~CSocketWriter() |
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89 { |
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90 Cancel(); |
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91 iTimer.Close(); |
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92 delete iTransferBufferArray; |
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93 } |
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94 |
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95 |
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96 // ----------------------------------------------------------------------------- |
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97 // CSocketWriter::SetObserver |
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98 // ----------------------------------------------------------------------------- |
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99 // |
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100 void CSocketWriter::SetObserver( MSocketWriterObserver* aObserver ) |
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101 { |
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102 iObserver = aObserver; |
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103 } |
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104 |
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105 // ----------------------------------------------------------------------------- |
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106 // CSocketWriter::IssueWriteL |
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107 // ----------------------------------------------------------------------------- |
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108 // |
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109 void CSocketWriter::IssueWriteL( const TDesC8& aData ) |
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110 { |
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111 // slice the size of data if bigger than KWriteBufferSize |
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112 |
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113 TInt dsize = aData.Size(); |
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114 |
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115 for ( TInt i = 0; i < dsize; i+=KWriteBufferSize ) |
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116 { |
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117 if ( i + KWriteBufferSize - 1 >= dsize ) |
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118 { |
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119 __ASSERT_DEBUG( i + aData.Mid( i ).Size() == dsize , |
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120 User::Panic( _L( "writer" ), 100 ) ); |
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121 iTransferBufferArray->AppendL( aData.Mid(i) ); |
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122 } |
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123 else |
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124 { |
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125 iTransferBufferArray->AppendL( aData.Mid( i, KWriteBufferSize ) ); |
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126 } |
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127 } |
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128 |
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129 if ( !IsActive() ) |
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130 { |
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131 IssueWrite(); |
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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 // CSocketWriter::IssueWrite |
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137 // ----------------------------------------------------------------------------- |
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138 void CSocketWriter::IssueWrite() |
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139 { |
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140 DEBUG_PRINT( DEBUG_STRING( |
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141 "CSocketWriter::IssueWrite" ) ); |
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142 iWriteBuffer = (*iTransferBufferArray)[ 0 ]; |
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143 |
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144 TProtocolDesc desc; |
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145 iSocket.Info( desc ); |
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146 |
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147 if ( desc.iProtocol == KProtocolInetUdp && iUDPRemotePort > -1 ) |
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148 { |
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149 // UDP |
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150 DEBUG_PRINT( DEBUG_STRING( |
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151 "CSocketWriter::IssueWrite(), UDP, remote port=%d" ), |
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152 iUDPRemotePort ); |
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153 |
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154 TInetAddr addrLocalHost( KInetAddrLoop, iUDPRemotePort ); |
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155 iSocket.SendTo( iWriteBuffer, addrLocalHost, 0, iStatus ); |
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156 } |
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157 else |
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158 { |
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159 // TCP |
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160 iSocket.Write( iWriteBuffer, iStatus ); |
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161 } |
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162 |
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163 SetActive(); |
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164 } |
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165 |
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166 // ----------------------------------------------------------------------------- |
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167 // CSocketWriter::ContinueAfterError |
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168 // ----------------------------------------------------------------------------- |
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169 void CSocketWriter::ContinueAfterError() |
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170 { |
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171 if ( iTransferBufferArray->Count() > 0 ) |
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172 { |
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173 IssueWrite(); |
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174 } |
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175 } |
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176 |
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177 // ----------------------------------------------------------------------------- |
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178 // CSocketWriter::ResetTransferBuffer |
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179 // ----------------------------------------------------------------------------- |
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180 void CSocketWriter::ResetTransferBuffer() |
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181 { |
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182 iTransferBufferArray->Reset(); |
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183 } |
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184 |
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185 // ----------------------------------------------------------------------------- |
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186 // CSocketWriter::RunL |
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187 // ----------------------------------------------------------------------------- |
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188 // |
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189 void CSocketWriter::RunL() |
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190 { |
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191 TInt status = iStatus.Int(); |
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192 if ( status == KErrNone ) |
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193 { |
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194 if ( iWaiting ) |
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195 { |
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196 DEBUG_PRINT( DEBUG_STRING( |
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197 "Trying to write again..." ) ); |
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198 |
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199 iWaiting = EFalse; |
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200 IssueWrite(); |
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201 } |
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202 else |
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203 { |
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204 iTransferBufferArray->Delete( 0 ); |
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205 if ( iTransferBufferArray->Count() > 0 ) |
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206 { |
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207 IssueWrite(); |
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208 } |
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209 else |
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210 { |
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211 iObserver->BufferUnderrunL(); |
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212 } |
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213 } |
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214 } |
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215 else |
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216 { |
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217 DEBUG_PRINT( DEBUG_STRING( |
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218 "CSocketWriter::RunL(), iStatus=%d" ), status ); |
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219 iObserver->WriterErrorL( status ); |
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220 //If Socket server is busy, wait for a while and try again |
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221 if ( status == KErrServerBusy ) |
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222 { |
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223 DEBUG_PRINT( DEBUG_STRING( |
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224 "Socket server busy. Waiting for a while..." ) ); |
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225 iWaiting = ETrue; |
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226 iTimer.After( iStatus, KServerBusyWaiting ); |
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227 SetActive(); |
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228 } |
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229 } |
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230 } |
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231 |
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232 // ----------------------------------------------------------------------------- |
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233 // CSocketWriter::DoCancel |
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234 // ----------------------------------------------------------------------------- |
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235 // |
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236 void CSocketWriter::DoCancel() |
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237 { |
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238 iTimer.Cancel(); |
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239 iSocket.CancelWrite(); |
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240 } |
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241 |
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242 // ----------------------------------------------------------------------------- |
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243 // CSocketWriter::RunError |
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244 // ----------------------------------------------------------------------------- |
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245 // |
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246 TInt CSocketWriter::RunError( TInt aError ) |
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247 { |
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248 iObserver->ObserverLeaved( aError ); |
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249 return KErrNone; |
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250 } |
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251 |
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