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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: UDP packet sender |
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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 "CUDPSender.h" |
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22 #include "MUDPSenderObserver.h" |
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23 |
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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 const TInt KUDPSenderSlots = 50; |
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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 // CUDPSender::CUDPSender |
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37 // ----------------------------------------------------------------------------- |
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38 // |
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39 CUDPSender::CUDPSender( MUDPSenderObserver* aObserver ) : |
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40 CActive( EPriorityStandard ), iObserver( aObserver ) |
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41 { |
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42 __ASSERT_DEBUG( iObserver, User::Invariant() ); |
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43 } |
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44 |
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45 // ----------------------------------------------------------------------------- |
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46 // CUDPSender::ConstructL |
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47 // ----------------------------------------------------------------------------- |
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48 // |
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49 void CUDPSender::ConstructL() |
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50 { |
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51 User::LeaveIfError( iSocketServ.Connect( KUDPSenderSlots ) ); |
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52 |
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53 // Create the socket |
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54 User::LeaveIfError( iSocket.Open( iSocketServ, KAfInet, KSockDatagram, |
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55 KProtocolInetUdp ) ); |
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56 |
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57 iRemoteAddr.SetAddress(KInetAddrLoop); |
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58 |
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59 iTransferBufferArray = new (ELeave) CDesC8ArraySeg( 10 ); |
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60 User::LeaveIfError( iTimer.CreateLocal() ); |
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61 CActiveScheduler::Add( this ); |
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62 } |
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63 |
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64 // ----------------------------------------------------------------------------- |
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65 // CUDPSender::NewL |
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66 // ----------------------------------------------------------------------------- |
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67 // |
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68 CUDPSender* CUDPSender::NewL( MUDPSenderObserver* aObserver ) |
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69 { |
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70 CUDPSender* self = CUDPSender::NewLC( aObserver ); |
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71 CleanupStack::Pop(); |
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72 |
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73 return self; |
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74 } |
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75 |
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76 // ----------------------------------------------------------------------------- |
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77 // CUDPSender::NewLC |
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78 // ----------------------------------------------------------------------------- |
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79 // |
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80 CUDPSender* CUDPSender::NewLC( MUDPSenderObserver* aObserver ) |
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81 { |
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82 CUDPSender* self = new( ELeave ) CUDPSender( aObserver ); |
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83 CleanupStack::PushL( self ); |
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84 |
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85 self->ConstructL(); |
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86 return self; |
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87 } |
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88 |
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89 |
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90 // Destructor |
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91 CUDPSender::~CUDPSender() |
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92 { |
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93 Cancel(); |
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94 |
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95 iSocket.Close(); |
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96 iSocketServ.Close(); |
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97 |
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98 iTimer.Close(); |
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99 delete iTransferBufferArray; |
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100 } |
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101 |
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102 // ----------------------------------------------------------------------------- |
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103 // CUDPSender::IssueWriteL |
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104 // ----------------------------------------------------------------------------- |
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105 // |
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106 void CUDPSender::IssueWriteL( TUint aPort, const TDesC8& aData ) |
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107 { |
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108 iRemoteAddr.SetPort(aPort); |
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109 |
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110 // slice the size of data if bigger than KWriteBufferSize |
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111 |
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112 TInt dsize = aData.Size(); |
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113 |
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114 for ( TInt i = 0; i < dsize; i+=KWriteBufferSize ) |
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115 { |
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116 if ( i + KWriteBufferSize - 1 >= dsize ) |
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117 { |
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118 __ASSERT_DEBUG( i + aData.Mid( i ).Size() == dsize , |
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119 User::Panic( _L( "writer" ), 100 ) ); |
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120 iTransferBufferArray->AppendL( aData.Mid(i) ); |
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121 } |
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122 else |
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123 { |
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124 iTransferBufferArray->AppendL( aData.Mid( i, KWriteBufferSize ) ); |
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125 } |
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126 } |
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127 |
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128 if ( !IsActive() ) |
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129 { |
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130 IssueWrite(); |
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131 } |
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132 } |
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133 |
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134 // ----------------------------------------------------------------------------- |
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135 // CUDPSender::IssueWrite |
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136 // ----------------------------------------------------------------------------- |
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137 void CUDPSender::IssueWrite() |
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138 { |
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139 DEBUG_PRINT( DEBUG_STRING( |
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140 "CUDPSender::IssueWrite" ) ); |
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141 iWriteBuffer = (*iTransferBufferArray)[ 0 ]; |
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142 |
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143 DEBUG_PRINT( DEBUG_STRING( |
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144 "CSocketWriter::IssueWrite()" ) ); |
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145 |
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146 iSocket.SendTo( iWriteBuffer, iRemoteAddr, 0, iStatus ); |
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147 |
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148 SetActive(); |
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149 } |
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150 |
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151 // ----------------------------------------------------------------------------- |
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152 // CUDPSender::ContinueAfterError |
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153 // ----------------------------------------------------------------------------- |
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154 void CUDPSender::ContinueAfterError() |
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155 { |
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156 if ( iTransferBufferArray->Count() > 0 ) |
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157 { |
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158 IssueWrite(); |
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159 } |
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160 } |
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161 |
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162 // ----------------------------------------------------------------------------- |
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163 // CUDPSender::ResetTransferBuffer |
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164 // ----------------------------------------------------------------------------- |
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165 void CUDPSender::ResetTransferBuffer() |
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166 { |
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167 iTransferBufferArray->Reset(); |
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168 } |
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169 |
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170 // ----------------------------------------------------------------------------- |
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171 // CUDPSender::RunL |
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172 // ----------------------------------------------------------------------------- |
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173 // |
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174 void CUDPSender::RunL() |
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175 { |
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176 TInt status = iStatus.Int(); |
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177 if ( status == KErrNone ) |
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178 { |
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179 if ( iWaiting ) |
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180 { |
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181 DEBUG_PRINT( DEBUG_STRING( |
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182 "Trying to write again..." ) ); |
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183 |
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184 iWaiting = EFalse; |
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185 IssueWrite(); |
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186 } |
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187 else |
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188 { |
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189 iTransferBufferArray->Delete( 0 ); |
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190 if ( iTransferBufferArray->Count() > 0 ) |
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191 { |
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192 IssueWrite(); |
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193 } |
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194 } |
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195 } |
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196 else |
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197 { |
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198 DEBUG_PRINT( DEBUG_STRING( |
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199 "CUDPSender::RunL(), iStatus=%d" ), status ); |
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200 iObserver->UDPSenderErrorL( status ); |
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201 //If Socket server is busy, wait for a while and try again |
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202 if ( status == KErrServerBusy ) |
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203 { |
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204 DEBUG_PRINT( DEBUG_STRING( |
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205 "Socket server busy. Waiting for a while..." ) ); |
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206 iWaiting = ETrue; |
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207 iTimer.After( iStatus, KServerBusyWaiting ); |
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208 SetActive(); |
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209 } |
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210 } |
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211 } |
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212 |
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213 // ----------------------------------------------------------------------------- |
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214 // CUDPSender::DoCancel |
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215 // ----------------------------------------------------------------------------- |
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216 // |
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217 void CUDPSender::DoCancel() |
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218 { |
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219 iTimer.Cancel(); |
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220 iSocket.CancelWrite(); |
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221 } |
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222 |
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223 // ----------------------------------------------------------------------------- |
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224 // CUDPSender::RunError |
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225 // ----------------------------------------------------------------------------- |
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226 // |
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227 TInt CUDPSender::RunError( TInt aError ) |
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228 { |
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229 iObserver->UDPSenderLeavedL( aError ); |
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230 return KErrNone; |
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231 } |
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232 |