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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: Implementation of CHtiBtCommServerSession class. This class |
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15 * represents the client session in server. |
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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 FILES |
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22 #include "HtiBtClientServerCommon.h" |
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23 #include "HtiBtCommServerSession.h" |
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24 #include "HtiBtCommServer.h" |
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25 #include "BtSerialClient.h" |
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26 #include "Logger.h" |
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27 |
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28 #include <e32base.h> |
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29 #include <e32std.h> |
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30 #include <e32svr.h> |
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31 |
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32 #include <HTICommPluginInterface.h> // KErrComModuleReset; |
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33 |
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34 // CONSTANTS |
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35 _LIT(KBtComSessPanic, "BtComSessAssrt"); |
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36 |
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37 const TInt KBtAddressHexStringLength = 12; // 6 bytes |
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38 const TInt KIncomingDataBufSize = 32 * 1024; |
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39 |
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40 //***************************************************************************** |
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41 // |
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42 // Class CHtiBtCommServerSession |
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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 CHtiBtCommServerSession::CHtiBtCommServerSession( CHtiBtCommServer* aServer ) |
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48 : CSession2() |
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49 { |
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50 LOGFW(DebugLog(_L("CHtiBtCommServerSession: CHtiBtCommServerSession()"))) |
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51 |
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52 __DECLARE_NAME( _S( "CHtiBtCommServerSession" ) ); |
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53 iBtCommServer = aServer; |
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54 iReadRequestComplete = ETrue; // ready to accept read request |
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55 iWriteRequestComplete = ETrue; |
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56 iConnectRequestComplete = ETrue; |
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57 iBtCommServer->SessionCreated(this); |
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58 } |
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59 |
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60 /*---------------------------------------------------------------------------*/ |
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61 CHtiBtCommServerSession* CHtiBtCommServerSession::NewL( |
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62 CHtiBtCommServer* aServer ) |
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63 { |
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64 LOGFW(DebugLog(_L("CHtiBtCommServerSession: NewL()"))) |
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65 CHtiBtCommServerSession* session = |
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66 new (ELeave) CHtiBtCommServerSession( aServer ); |
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67 CleanupStack::PushL( session ); |
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68 session->ConstructL(); |
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69 CleanupStack::Pop( session ); |
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70 return session; |
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71 } |
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72 |
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73 /*---------------------------------------------------------------------------*/ |
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74 |
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75 void CHtiBtCommServerSession::ConstructL() |
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76 { |
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77 LOGFW(DebugLog(_L("CHtiBtCommServerSession: ConstructL()"))) |
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78 iBtClient = CBtSerialClient::NewL(*this); |
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79 iIncomingDataBuf = HBufC8::NewL(KIncomingDataBufSize); |
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80 LOGFW(DebugLog(_L("CHtiBtCommServerSession: ConstructL(): Done"))) |
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81 } |
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82 |
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83 /*---------------------------------------------------------------------------*/ |
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84 CHtiBtCommServerSession::~CHtiBtCommServerSession() |
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85 { |
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86 LOGFW(DebugLog(_L("CHtiBtCommServerSession: ~CHtiBtCommServerSession()"))) |
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87 delete iBtClient; |
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88 ResetAll(KErrCancel); |
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89 delete iIncomingDataBuf; |
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90 if ( iBtCommServer ) |
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91 { |
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92 iBtCommServer->SessionFreed(); |
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93 } |
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94 LOGFW(DebugLog(_L("CHtiBtCommServerSession: ~CHtiBtCommServerSession(): Done"))) |
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95 } |
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96 |
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97 /*---------------------------------------------------------------------------*/ |
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98 void CHtiBtCommServerSession::ServiceL( const RMessage2& aMessage ) |
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99 { |
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100 LOGFW(DebugLog(_L("CHtiBtCommServerSession: ServiceL()"))) |
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101 |
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102 TRAPD( error, DispatchMessageL( aMessage ) ); |
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103 if ( error != KErrNone ) |
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104 { |
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105 LOGFW(DebugLog(_L("CHtiBtCommServerSession::ServiceL error %d"), error);) |
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106 } |
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107 LOGFW(DebugLog(_L("CHtiBtCommServerSession: ServiceL(): Done"))) |
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108 } |
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109 |
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110 |
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111 /*---------------------------------------------------------------------------*/ |
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112 void CHtiBtCommServerSession::DispatchMessageL( const RMessage2 &aMessage ) |
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113 { |
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114 LOGFW( DebugLog( _L( "CHtiBtCommServerSession: DispatchMessageL()" ) ) ) |
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115 |
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116 switch ( aMessage.Function() ) |
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117 { |
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118 case EBtCommServerConnect: |
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119 { |
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120 HandleConnectRequestL( aMessage ); |
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121 } |
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122 break; |
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123 |
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124 case EBtCommServerSend: |
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125 { |
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126 HandleSendRequestL( aMessage ); |
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127 } |
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128 break; |
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129 case EBtCommServerRecv: |
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130 { |
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131 HandleReadRequestL( aMessage ); |
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132 } |
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133 break; |
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134 |
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135 case ECancelBtCommServerRecv: |
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136 case ECancelBtCommServerSend: |
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137 { |
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138 HandleCancelRequestL( aMessage ); |
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139 } |
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140 break; |
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141 |
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142 case EGetServicePortNumber: |
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143 { |
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144 HandlePortNumberRequestL( aMessage ); |
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145 } |
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146 break; |
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147 |
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148 default: |
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149 { |
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150 LOGFW(ErrLog(_L("CHtiBtCommServerSession::DispatchMessageL: Unknown request: %d. Panicing Client"), aMessage.Function());) |
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151 PanicClient( EBadRequest ); |
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152 User::Panic( KBtComSessPanic, 1 ); |
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153 } |
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154 break; |
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155 } |
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156 LOGFW(DebugLog(_L("CHtiBtCommServerSession: DispatchMessageL(): Done"))) |
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157 } |
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158 |
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159 /*---------------------------------------------------------------------------*/ |
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160 void CHtiBtCommServerSession::HandleConnectRequestL( const RMessage2& aMessage ) |
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161 { |
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162 LOGFW(DebugLog(_L("CHtiBtCommServer:HandleConnectRequestL()"))) |
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163 if ( !iConnectRequestComplete ) |
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164 { |
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165 LOGFW(DebugLog(_L("CHtiBtCommServer:HandleConnectRequestL(): Already connecting"))) |
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166 aMessage.Complete( KErrNotReady ); |
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167 } |
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168 else |
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169 { |
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170 if ( iBtClient->Connected() ) |
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171 { |
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172 LOGFW(DebugLog(_L("CHtiBtCommServer:HandleConnectRequestL(): Already connected"))) |
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173 aMessage.Complete( KErrNone ); // Already connected. This is not an error? |
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174 } |
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175 else |
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176 { |
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177 LOGFW(DebugLog(_L("CHtiBtCommServer:HandleConnectRequestL(): Starting to connect to remote host"))) |
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178 iConnectRequest = aMessage; |
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179 iConnectRequestComplete = EFalse; |
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180 |
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181 TInt dataLength = (TUint16)aMessage.GetDesLength( 0 ); //first message slot |
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182 LOGFW(DebugLog(_L("CHtiBtCommServer:HandleConnectRequestL(): Data length = %d"), dataLength)); |
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183 |
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184 TInt port = aMessage.Int1(); |
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185 LOGFW(DebugLog(_L("CHtiBtCommServer:HandleConnectRequestL(): Port = %d"), port)); |
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186 |
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187 if ( dataLength < 1 ) |
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188 { |
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189 LOGFW(DebugLog(_L("CHtiBtCommServer:HandleConnectRequestL(): No address or name - need to ask device"))) |
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190 iBtClient->ConnectL(); // Request is completed in ConnectedToServer |
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191 } |
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192 else if ( dataLength == KBtAddressHexStringLength ) |
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193 { |
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194 TBuf8<KBtAddressHexStringLength> addressBuf8; |
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195 aMessage.ReadL( 0, addressBuf8 ); |
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196 TBuf<KBtAddressHexStringLength> addressBuf; |
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197 addressBuf.Copy( addressBuf8 ); |
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198 TBTDevAddr address; |
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199 TInt result = address.SetReadable( addressBuf ); |
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200 LOGFW(DebugLog(_L("CHtiBtCommServer:HandleConnectRequestL(): SetReadable result = %d"), result)); |
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201 if ( result != KBtAddressHexStringLength ) |
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202 { |
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203 LOGFW(DebugLog(_L("CHtiBtCommServer:HandleConnectRequestL(): Not valid address - use it as name"))) |
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204 iBtClient->ConnectL( addressBuf, port ); |
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205 } |
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206 else |
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207 { |
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208 LOGFW(DebugLog(_L("CHtiBtCommServer:HandleConnectRequestL(): Valid address - connect"))) |
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209 iBtClient->ConnectL( address, port ); |
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210 } |
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211 } |
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212 else |
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213 { |
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214 LOGFW(DebugLog(_L("CHtiBtCommServer:HandleConnectRequestL(): Using name to connect"))) |
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215 TBTDeviceName8 deviceName8; |
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216 aMessage.ReadL( 0, deviceName8 ); |
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217 TBTDeviceName deviceName; |
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218 deviceName.Copy( deviceName8 ); |
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219 iBtClient->ConnectL( deviceName, port ); |
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220 } |
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221 } |
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222 } |
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223 LOGFW(DebugLog(_L("CHtiBtCommServer:HandleConnectRequestL(): Done"))) |
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224 } |
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225 |
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226 /*---------------------------------------------------------------------------*/ |
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227 void CHtiBtCommServerSession::HandleReadRequestL( const RMessage2& aMessage ) |
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228 { |
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229 LOGFW(DebugLog(_L("CHtiBtCommServerSession: HandleReadRequestL()"))) |
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230 |
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231 if ( !iReadRequestComplete ) |
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232 { |
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233 LOGFW(WarnLog(_L("CHtiBtCommServerSession: HandleReadRequestL(): Pending request. ret=KErrNotReady"))) |
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234 // Two simultaneous read requests are not allowed. |
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235 aMessage.Complete(KErrNotReady); |
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236 return; |
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237 } |
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238 |
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239 // No data in read buffer. Must wait for new data before completing request |
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240 iReadRequest = aMessage; |
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241 iReadRequestComplete = EFalse; // Not ready to complete next request |
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242 TryCompleteReadRequest(); // if there is something in the readbuffer, |
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243 // use it for completion. |
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244 |
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245 if ( iIncomingDataBuf->Des().Length() == 0 ) |
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246 { |
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247 // Read some bytes to buffer even before client's request. |
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248 iBtClient->ReadAsyncL(); // Issue async request to read more data. |
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249 } |
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250 |
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251 LOGFW(DebugLog(_L("CHtiBtCommServerSession: HandleReadRequestL(): Done"))) |
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252 } |
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253 |
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254 /*---------------------------------------------------------------------------*/ |
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255 void CHtiBtCommServerSession::HandleSendRequestL( const RMessage2& aMessage ) |
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256 { |
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257 LOGFW(DebugLog(_L("CHtiBtCommServerSession: HandleSendRequestL()"))) |
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258 |
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259 TInt dataLength = (TUint16)aMessage.GetDesLength( 0 ); //first message slot |
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260 LOGFW( InfoLog( _L( "Framework requested to send data: %d bytes" ), dataLength ) ) |
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261 if ( iBtClient->SendBufferMaxSize() < dataLength ) |
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262 { |
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263 aMessage.Complete(KErrOverflow); |
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264 LOGFW(ErrLog(_L("CHtiBtCommServerSession: HandleSendRequestL(): client is giving too big data. Cannot handle."))) |
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265 } |
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266 else if ( !iWriteRequestComplete ) |
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267 { |
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268 LOGFW(WarnLog(_L("CHtiBtCommServerSession: HandleSendRequestL(): Pending request. ret=KErrNotReady"))) |
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269 // Already pending send request. Two simultaneous send requests not allowed. |
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270 aMessage.Complete( KErrNotReady ); |
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271 } |
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272 else |
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273 { |
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274 if ( iBtClient->FreeSpaceInSendBuffer() < dataLength ) |
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275 { |
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276 LOGFW(DebugLog(_L("CHtiBtCommServerSession: HandleSendRequestL(): Completing send request delayed"))) |
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277 // No space in the iBtClient's send buffer. Copy the data to internal |
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278 // buffer and wait for iBtClient to send its data out before adding |
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279 // data to its send buffer. |
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280 delete iSendBuffer; |
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281 iSendBuffer = NULL; |
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282 iSendBuffer = HBufC8::NewL(dataLength); |
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283 TPtr8 ptr = iSendBuffer->Des(); |
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284 aMessage.ReadL( 0, ptr ); |
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285 iWriteRequestComplete = EFalse; |
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286 iWriteRequest = aMessage; |
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287 // Wait for callback call AllBufferedDataSent. Complete request there. |
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288 } |
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289 else |
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290 { |
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291 LOGFW(DebugLog(_L("CHtiBtCommServerSession: HandleSendRequestL(): Completing send request immediately"))) |
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292 // All data can be sent immediately, because there is enough space in |
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293 // iBtClient's send buffer. |
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294 HBufC8* data = HBufC8::NewLC( dataLength ); |
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295 TPtr8 ptr = data->Des(); |
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296 aMessage.ReadL( 0, ptr ); |
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297 iBtClient->SendL( ptr ); |
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298 CleanupStack::PopAndDestroy( data ); |
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299 aMessage.Complete( KErrNone ); |
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300 } |
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301 } |
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302 LOGFW(DebugLog(_L("CHtiBtCommServerSession: HandleSendRequestL(): Done"))) |
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303 } |
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304 |
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305 /*---------------------------------------------------------------------------*/ |
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306 void CHtiBtCommServerSession::HandleCancelRequestL( const RMessage2& aMessage ) |
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307 { |
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308 ResetAll( KErrCancel ); |
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309 aMessage.Complete( KErrNone ); |
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310 } |
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311 |
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312 /*---------------------------------------------------------------------------*/ |
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313 void CHtiBtCommServerSession::HandlePortNumberRequestL(const RMessage2& aMessage) |
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314 { |
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315 TPckgBuf<TInt> p( iBtClient->ServicePort() ); |
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316 TInt err = aMessage.Write( 0, p, 0 ); |
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317 aMessage.Complete( err ); |
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318 } |
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319 |
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320 /*---------------------------------------------------------------------------*/ |
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321 |
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322 void CHtiBtCommServerSession::PanicClient(TInt aPanic) const |
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323 { |
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324 LOGFW(DebugLog(_L("CHtiBtCommServerSession: PanicClient(): %d"), aPanic)) |
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325 LOGFW(WarnLog(_L("CHtiBtCommServerSession: PanicClient(): %d. NOT IMPLEMENTED"), aPanic)) |
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326 aPanic = aPanic; |
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327 // should be done with RMessage2? |
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328 } |
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329 |
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330 /*---------------------------------------------------------------------------*/ |
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331 void CHtiBtCommServerSession::ResetAll(TInt aCompletionCode) |
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332 { |
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333 LOGFW(DebugLog(_L("CHtiBtCommServerSession: ResetAll()"))) |
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334 if ( !iWriteRequestComplete ) |
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335 iWriteRequest.Complete( aCompletionCode ); |
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336 if ( !iReadRequestComplete ) |
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337 iReadRequest.Complete( aCompletionCode ); |
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338 if ( !iConnectRequestComplete ) |
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339 iConnectRequest.Complete( aCompletionCode ); // error when making connection |
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340 iWriteRequestComplete = ETrue; |
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341 iReadRequestComplete = ETrue; |
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342 iConnectRequestComplete = ETrue; |
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343 delete iIncomingDataBuf; |
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344 iIncomingDataBuf = NULL; |
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345 delete iSendBuffer; |
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346 iSendBuffer = NULL; |
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347 iIncomingDataBuf = HBufC8::New(KIncomingDataBufSize); |
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348 LOGFW(DebugLog(_L("CHtiBtCommServerSession: ResetAll(): Done"))) |
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349 } |
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350 |
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351 /*---------------------------------------------------------------------------*/ |
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352 void CHtiBtCommServerSession::ConnectedToServer(TInt aError) |
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353 { |
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354 // Connected to server. Reading has been started. |
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355 LOGFW(InfoLog(_L("CHtiBtCommServerSession: ConnectedToServer: connected to remote host"))) |
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356 iConnectRequestComplete = ETrue; |
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357 iConnectRequest.Complete( aError ); |
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358 } |
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359 |
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360 /*---------------------------------------------------------------------------*/ |
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361 void CHtiBtCommServerSession::DisconnectedFromServer() |
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362 { |
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363 LOGFW(InfoLog(_L("CHtiBtCommServerSession: DisconnectedFromServer: disconnected from remote host"))) |
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364 ResetAll( KErrDisconnected ); |
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365 } |
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366 |
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367 /*---------------------------------------------------------------------------*/ |
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368 void CHtiBtCommServerSession::DataFromServer(const TDesC8& aData) |
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369 { |
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370 LOGFW(DebugLog(_L("CHtiBtCommServerSession: DataFromServer: %d bytes"), aData.Length())) |
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371 TPtr8 ptr = iIncomingDataBuf->Des(); |
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372 if ( aData.Length() > ptr.MaxLength() - ptr.Length() ) |
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373 PanicClient( KErrUnderflow ); // Client is reading too slowly |
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374 |
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375 ptr.Append( aData ); |
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376 TryCompleteReadRequest(); |
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377 LOGFW(DebugLog(_L("CHtiBtCommServerSession: DataFromServer: done"), aData.Length())) |
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378 } |
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379 |
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380 /*---------------------------------------------------------------------------*/ |
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381 void CHtiBtCommServerSession::AllBufferedDataSent() |
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382 { |
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383 LOGFW(DebugLog(_L("CHtiBtCommServerSession: AllBufferedDataSent"))) |
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384 if ( !iWriteRequestComplete ) |
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385 { |
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386 // iBtClient has sent all of its data and is ready to send more. |
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387 TPtr8 ptr = iSendBuffer->Des(); |
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388 TRAPD( err, iBtClient->SendL( ptr ); ) |
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389 iWriteRequest.Complete( err ); |
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390 iWriteRequestComplete = ETrue; |
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391 delete iSendBuffer; |
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392 iSendBuffer = NULL; |
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393 } |
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394 LOGFW(DebugLog(_L("CHtiBtCommServerSession: AllBufferedDataSent: Done"))) |
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395 } |
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396 |
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397 /*---------------------------------------------------------------------------*/ |
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398 void CHtiBtCommServerSession::TryCompleteReadRequest() |
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399 { |
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400 LOGFW(DebugLog(_L("CHtiBtCommServerSession: TryCompleteReadRequest"))) |
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401 TPtr8 ptr = iIncomingDataBuf->Des(); |
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402 |
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403 if ( iReadRequestComplete || ptr.Length() == 0 ) |
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404 { |
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405 LOGFW(DebugLog(_L("CHtiBtCommServerSession: TryCompleteReadRequest: Nothing to complete"))) |
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406 return; // No outstanding client request to complete |
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407 } |
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408 |
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409 TInt dataMaxLength = (TUint16)iReadRequest.GetDesMaxLength(0); //first message slot |
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410 TPtrC8 dataToClient = ptr.Left(dataMaxLength); |
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411 TRAPD(err, iReadRequest.WriteL(0, dataToClient);) |
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412 |
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413 ptr.Delete(0, dataToClient.Length()); |
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414 iReadRequest.Complete(err); |
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415 iReadRequestComplete = ETrue; |
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416 LOGFW(DebugLog(_L("CHtiBtCommServerSession: TryCompleteReadRequest: Done"))) |
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417 } |
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418 |
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419 // End of file |