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1 |
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2 // Copyright (c) 2004-2009 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: |
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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 // INCLUDES |
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20 #include "SIPExSocketEngine.h" |
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21 #include "SIPExSocketWriter.h" |
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22 #include "SIPExSocketReader.h" |
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23 #include "SIPExTimeOutTimer.h" |
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24 #include <e32svr.h> |
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25 #include <commdbconnpref.h> |
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26 |
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27 // CONSTANTS |
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28 const TInt KGamePort( 10011 ); |
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29 |
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30 // ----------------------------------------------------------------------------- |
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31 // CSIPExSocketEngine::NewL |
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32 // Creates the instance of class and returns it. |
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33 // ----------------------------------------------------------------------------- |
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34 // |
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35 EXPORT_C CSIPExSocketEngine* CSIPExSocketEngine::NewL( |
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36 MSIPExSocketEngineObserver& aObserver ) |
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37 { |
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38 CSIPExSocketEngine* self = CSIPExSocketEngine::NewLC( aObserver ); |
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39 CleanupStack::Pop(self); |
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40 return self; |
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41 } |
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42 |
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43 // ----------------------------------------------------------------------------- |
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44 // CSIPExSocketEngine::NewLC |
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45 // Creates the instance of class and pushes it to the CleanupStack and return |
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46 // it. |
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47 // ----------------------------------------------------------------------------- |
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48 // |
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49 EXPORT_C CSIPExSocketEngine* CSIPExSocketEngine::NewLC( |
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50 MSIPExSocketEngineObserver& aObserver ) |
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51 { |
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52 CSIPExSocketEngine* self = new (ELeave) CSIPExSocketEngine( aObserver ); |
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53 CleanupStack::PushL(self); |
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54 self->ConstructL(); |
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55 return self; |
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56 } |
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57 |
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58 // ----------------------------------------------------------------------------- |
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59 // CSIPExSocketEngine::CSIPExSocketEngine |
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60 // Calls base classes constructor with priority value. Add class to the |
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61 // active sheduler. |
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62 // ----------------------------------------------------------------------------- |
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63 // |
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64 CSIPExSocketEngine::CSIPExSocketEngine( MSIPExSocketEngineObserver& aObserver ) |
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65 : CActive( EPriorityStandard ), iObserver( aObserver ) |
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66 { |
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67 CActiveScheduler::Add( this ); |
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68 } |
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69 |
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70 // ----------------------------------------------------------------------------- |
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71 // CSIPExSocketEngine::~CSIPExSocketEngine |
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72 // Cancels any outstanding requests and deletes members. |
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73 // ----------------------------------------------------------------------------- |
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74 // |
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75 EXPORT_C CSIPExSocketEngine::~CSIPExSocketEngine() |
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76 { |
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77 Cancel(); |
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78 |
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79 if ( iTimer ) |
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80 { |
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81 iTimer->Cancel(); |
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82 delete iTimer; |
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83 } |
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84 |
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85 if ( iWriter ) |
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86 { |
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87 iWriter->Cancel(); |
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88 delete iWriter; |
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89 } |
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90 |
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91 if ( iReader ) |
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92 { |
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93 iReader->Cancel(); |
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94 delete iReader; |
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95 } |
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96 |
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97 iListenSocket.Close(); |
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98 iDataSocket.Close(); |
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99 iConnection.Close(); |
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100 iSocketServer.Close(); |
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101 } |
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102 |
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103 // ----------------------------------------------------------------------------- |
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104 // CSIPExSocketEngine::ConstructL |
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105 // The socketserver is connected and members created. |
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106 // ----------------------------------------------------------------------------- |
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107 // |
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108 void CSIPExSocketEngine::ConstructL() |
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109 { |
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110 iState = ENotConnected; |
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111 |
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112 iTimer = CSIPExTimeOutTimer::NewL( *this ); |
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113 |
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114 // Open channel to Socket Server |
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115 User::LeaveIfError( iSocketServer.Connect() ); |
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116 |
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117 iReader = CSIPExSocketReader::NewL( iDataSocket, *this ); |
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118 iWriter = CSIPExSocketWriter::NewL( iDataSocket, *this ); |
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119 } |
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120 |
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121 // ----------------------------------------------------------------------------- |
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122 // CSIPExSocketEngine::DoCancel |
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123 // From CActive. Cancels any outstanding request according the engine state. |
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124 // ----------------------------------------------------------------------------- |
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125 // |
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126 void CSIPExSocketEngine::DoCancel() |
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127 { |
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128 iTimer->Cancel(); |
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129 |
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130 // Cancel appropriate request to socket |
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131 switch ( iState ) |
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132 { |
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133 case EConnecting: |
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134 iDataSocket.CancelConnect(); |
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135 break; |
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136 |
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137 case EListening: |
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138 iListenSocket.CancelAccept(); |
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139 break; |
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140 |
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141 default: |
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142 break; |
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143 } |
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144 |
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145 iConnection.Close(); |
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146 } |
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147 |
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148 // ----------------------------------------------------------------------------- |
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149 // CSIPExSocketEngine::RunL |
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150 // From CActive. Handles the state changes and notifing the observer. |
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151 // ----------------------------------------------------------------------------- |
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152 // |
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153 void CSIPExSocketEngine::RunL() |
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154 { |
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155 iTimer->Cancel(); |
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156 |
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157 switch( iState ) |
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158 { |
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159 case EConnecting: |
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160 if( iStatus.Int() == KErrNone ) |
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161 { |
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162 ChangeStateAndNotify( EConnected ); |
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163 Read(); |
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164 } |
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165 else |
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166 { |
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167 ChangeStateAndNotify( ENotConnected ); |
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168 } |
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169 break; |
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170 |
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171 case EListening: |
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172 { |
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173 iListenSocket.Close(); |
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174 if( iStatus.Int() == KErrNone ) |
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175 { |
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176 ChangeStateAndNotify( EConnected ); |
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177 Read(); |
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178 } |
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179 else |
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180 { |
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181 ChangeStateAndNotify( ENotConnected ); |
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182 } |
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183 } |
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184 break; |
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185 |
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186 case ETimedOut: |
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187 if( iStatus.Int() == KErrNone ) |
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188 { |
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189 iObserver.SocketState( ETimedOut ); |
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190 iState = ENotConnected; |
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191 } |
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192 else |
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193 { |
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194 ChangeStateAndNotify( ENotConnected ); |
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195 } |
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196 break; |
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197 |
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198 default: |
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199 iObserver.SocketState( iStatus.Int() ); |
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200 } |
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201 } |
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202 |
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203 // ----------------------------------------------------------------------------- |
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204 // CSIPExSocketEngine::ConnectL |
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205 // Connects the socket to the remote host. Asynchronous. |
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206 // ----------------------------------------------------------------------------- |
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207 // |
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208 EXPORT_C void CSIPExSocketEngine::ConnectL( |
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209 const TUint32 aIapId, |
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210 const TInetAddr& aIPAddress ) |
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211 { |
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212 if( iState != ENotConnected ) |
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213 { |
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214 return; |
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215 } |
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216 |
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217 // Make first sure that underlying interface is active |
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218 StartInterfaceL( aIapId ); |
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219 |
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220 // Open a TCP socket |
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221 User::LeaveIfError( iDataSocket.Open( |
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222 iSocketServer, KAfInet, KSockStream, KProtocolInetTcp, iConnection ) ); |
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223 |
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224 iAddress = aIPAddress; |
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225 iAddress.SetPort( KGamePort ); |
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226 |
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227 // The Connect() allocate local address automatically if |
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228 // not bind yet. |
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229 iDataSocket.Connect( iAddress, iStatus ); |
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230 |
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231 iState = EConnecting; |
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232 SetActive(); |
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233 iTimer->After( KTimeOut ); |
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234 } |
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235 |
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236 // ----------------------------------------------------------------------------- |
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237 // CSIPExSocketEngine::Write |
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238 // Starts the asynchronous writing |
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239 // ----------------------------------------------------------------------------- |
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240 // |
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241 EXPORT_C void CSIPExSocketEngine::Write( const TDesC8& aTxt ) |
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242 { |
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243 if( iState == EConnected && !iWriter->IsActive() ) |
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244 { |
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245 iWriter->Write( aTxt ); |
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246 } |
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247 } |
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248 |
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249 // ----------------------------------------------------------------------------- |
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250 // CSIPExSocketEngine::Read |
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251 // Starts the asynchronous reading. |
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252 // ----------------------------------------------------------------------------- |
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253 // |
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254 EXPORT_C void CSIPExSocketEngine::Read() |
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255 { |
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256 if( iState == EConnected && !iReader->IsActive() ) |
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257 { |
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258 iReader->Read(); |
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259 } |
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260 } |
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261 |
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262 // ----------------------------------------------------------------------------- |
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263 // CSIPExSocketEngine::Stop |
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264 // Cancelling any outstanding read/write request. |
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265 // ----------------------------------------------------------------------------- |
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266 // |
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267 EXPORT_C void CSIPExSocketEngine::Stop() |
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268 { |
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269 switch( iState ) |
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270 { |
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271 case EConnected: |
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272 { |
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273 iWriter->Cancel(); |
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274 iReader->Cancel(); |
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275 TRequestStatus status; |
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276 iDataSocket.Shutdown( RSocket::EImmediate, status ); |
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277 User::WaitForRequest( status); |
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278 iConnection.Close(); |
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279 ChangeStateAndNotify( ENotConnected ); |
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280 } |
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281 break; |
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282 case EListening: |
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283 case EConnecting: |
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284 Cancel(); |
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285 break; |
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286 default: |
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287 break; |
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288 } |
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289 } |
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290 |
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291 // ----------------------------------------------------------------------------- |
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292 // CSIPExSocketEngine::StartListeningL |
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293 // Resolves the local address and starts listening game port. Asynchronous. |
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294 // ----------------------------------------------------------------------------- |
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295 // |
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296 EXPORT_C TInetAddr& CSIPExSocketEngine::StartListeningL( const TUint32 aIapId ) |
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297 { |
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298 StartInterfaceL( aIapId ); |
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299 ResolveLocalIPAddressL(); |
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300 iAddress.SetPort( KGamePort ); |
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301 User::LeaveIfError( iListenSocket.Open( |
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302 iSocketServer, KAfInet, KSockStream, KProtocolInetTcp ) ); |
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303 User::LeaveIfError( iDataSocket.Open( iSocketServer ) ); |
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304 User::LeaveIfError( iListenSocket.Bind( iAddress ) ); |
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305 |
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306 User::LeaveIfError( iListenSocket.Listen( 1 ) ); |
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307 |
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308 iListenSocket.Accept( iDataSocket, iStatus ); |
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309 iState = EListening; |
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310 SetActive(); |
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311 |
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312 return iAddress; |
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313 } |
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314 |
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315 // ----------------------------------------------------------------------------- |
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316 // CSIPExSocketEngine::StartInterfaceL |
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317 // Activates PDP ctx |
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318 // ----------------------------------------------------------------------------- |
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319 // |
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320 void CSIPExSocketEngine::StartInterfaceL( const TUint32 aIapId ) |
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321 { |
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322 if( !iConnection.SubSessionHandle() ) |
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323 { |
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324 User::LeaveIfError( iConnection.Open( iSocketServer ) ); |
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325 } |
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326 |
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327 TCommDbConnPref prefs; |
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328 prefs.SetDialogPreference( ECommDbDialogPrefDoNotPrompt ); |
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329 prefs.SetDirection( ECommDbConnectionDirectionOutgoing ); |
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330 prefs.SetIapId( aIapId ); |
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331 |
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332 User::LeaveIfError( iConnection.Start( prefs ) ); |
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333 } |
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334 |
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335 // ----------------------------------------------------------------------------- |
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336 // CSIPExSocketEngine::ResolveLocalIPAddressL |
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337 // Resolves the local IP address. |
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338 // ----------------------------------------------------------------------------- |
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339 // |
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340 void CSIPExSocketEngine::ResolveLocalIPAddressL() |
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341 { |
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342 RHostResolver hostResolver; |
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343 TNameEntry entry; |
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344 |
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345 User::LeaveIfError( hostResolver.Open( iSocketServer, KAfInet, |
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346 KProtocolInetTcp, iConnection )); |
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347 CleanupClosePushL( hostResolver ); |
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348 |
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349 User::LeaveIfError( hostResolver.GetByName( TPtrC(), entry ) ); |
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350 if ( !TInetAddr::Cast( entry().iAddr ).IsWildAddr() ) |
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351 { |
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352 iAddress = TInetAddr::Cast( entry().iAddr ); |
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353 } |
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354 |
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355 CleanupStack::PopAndDestroy(); // hostResolver |
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356 } |
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357 |
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358 // ----------------------------------------------------------------------------- |
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359 // CSIPExSocketEngine::TimerExpired |
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360 // Callback from the timeout notifier. Completes the request with error code |
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361 // KErrNone and state ETimedOut. |
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362 // ----------------------------------------------------------------------------- |
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363 // |
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364 void CSIPExSocketEngine::TimerExpired() |
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365 { |
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366 Cancel(); |
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367 iState = ETimedOut; |
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368 |
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369 TRequestStatus* status = &iStatus; |
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370 SetActive(); |
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371 User::RequestComplete( status, KErrNone ); |
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372 } |
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373 |
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374 // ----------------------------------------------------------------------------- |
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375 // CSIPExSocketEngine::MessageReceived |
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376 // Notifies the observer. |
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377 // ----------------------------------------------------------------------------- |
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378 // |
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379 void CSIPExSocketEngine::MessageReceived( TDesC8& aBuffer ) |
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380 { |
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381 iObserver.SocketData( aBuffer ); |
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382 } |
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383 |
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384 // ----------------------------------------------------------------------------- |
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385 // CSIPExSocketEngine::ErrorInReading |
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386 // Completes the request with error code. |
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387 // ----------------------------------------------------------------------------- |
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388 // |
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389 void CSIPExSocketEngine::ErrorInReading( TInt aError ) |
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390 { |
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391 TRequestStatus* status = &iStatus; |
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392 SetActive(); |
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393 User::RequestComplete( status, aError ); |
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394 } |
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395 |
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396 // From MWriterNotifier |
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397 // ----------------------------------------------------------------------------- |
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398 // CSIPExSocketEngine::WriteDone |
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399 // |
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400 // ----------------------------------------------------------------------------- |
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401 // |
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402 void CSIPExSocketEngine::WriteDone() |
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403 { |
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404 // Nothing to do |
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405 } |
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406 |
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407 // ----------------------------------------------------------------------------- |
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408 // CSIPExSocketEngine::ErrorInWriting |
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409 // Completes the request with error code. |
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410 // ----------------------------------------------------------------------------- |
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411 // |
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412 void CSIPExSocketEngine::ErrorInWriting( TInt aError ) |
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413 { |
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414 TRequestStatus* status = &iStatus; |
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415 SetActive(); |
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416 User::RequestComplete( status, aError ); |
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417 } |
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418 |
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419 // ----------------------------------------------------------------------------- |
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420 // CSIPExSocketEngine::ChangeStateAndNotify |
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421 // Changes new state and notifies observer. |
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422 // ----------------------------------------------------------------------------- |
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423 // |
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424 void CSIPExSocketEngine::ChangeStateAndNotify( TSocketEngineState aNewState ) |
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425 { |
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426 iState = aNewState; |
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427 iObserver.SocketState( iState ); |
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428 } |
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429 |
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430 // End of file |