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1 /* |
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2 * Copyright (c) 2004 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 |
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15 * |
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16 */ |
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17 |
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18 #include "CTcBaseConnection.h" |
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19 #include "debuglog.h" |
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20 #include "ErrorHandling.h" |
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21 |
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22 /// Accept queue length for listening sockets. |
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23 const TInt KTcAcceptQueue( 2 ); |
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24 /// Try binding twenty times, at intervals of 0.1 sec |
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25 const TInt KTcBindRetryCount( 20 ); |
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26 const TInt KTcBindDelay( 100000 ); |
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27 |
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28 // Retry connect after delay if connecting fails |
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29 const TInt KRetryDelay( 5000000 ); |
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30 |
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31 CTcBaseConnection::~CTcBaseConnection() |
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32 { |
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33 LOG( _L("CTcBaseConnection::~CTcBaseConnection()") ); |
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34 Close(); |
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35 } |
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36 |
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37 CTcBaseConnection::CTcBaseConnection() |
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38 : CActive( CActive::EPriorityHigh ) |
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39 { |
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40 CActiveScheduler::Add( this ); |
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41 iTimer.CreateLocal(); |
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42 } |
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43 |
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44 void CTcBaseConnection::RunL() |
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45 { |
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46 LOG( _L("CTcBaseConnection::RunL() iState = %d, iStatus = %d"), iState, iStatus.Int() ); |
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47 |
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48 // Take backup of the state for notifying AFTER state transition |
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49 TInt status( iStatus.Int() ); |
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50 TState state( iState ); |
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51 |
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52 // Do state transition |
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53 switch( iState ) |
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54 { |
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55 case EConnecting: |
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56 { |
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57 if( !status ) |
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58 { |
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59 iState = EConnected; |
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60 } |
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61 else |
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62 { |
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63 iState = EIdle; |
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64 |
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65 // Retry if connecting failed |
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66 if ( status == KErrCouldNotConnect) |
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67 { |
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68 iState = EWaitingRetry; |
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69 iTimer.After(iStatus,KRetryDelay); |
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70 SetActive(); |
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71 return; |
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72 } |
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73 } |
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74 break; |
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75 } |
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76 case EWaitingRetry: |
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77 { |
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78 LOG( _L("CTcBaseConnection::RunL() retrying connect") ); |
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79 ConnectL( iRemoteAddr ); |
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80 return; |
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81 } |
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82 case ESending: |
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83 case EReceiving: |
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84 { |
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85 iState = EConnected; |
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86 break; |
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87 } |
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88 |
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89 default: |
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90 { |
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91 // should not happen.. |
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92 break; |
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93 } |
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94 } |
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95 |
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96 Notify( state, status ); |
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97 LOG( _L("CTcBaseConnection::RunL() end, iState = %d"), iState ); |
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98 } |
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99 |
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100 void CTcBaseConnection::DoCancel() |
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101 { |
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102 LOG( _L("CTcBaseConnection::DoCancel() start") ); |
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103 iSocket.CancelAll(); |
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104 |
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105 switch( iState ) |
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106 { |
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107 case EConnecting: |
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108 { |
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109 iState = EIdle; |
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110 break; |
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111 } |
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112 case EWaitingRetry: |
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113 { |
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114 iTimer.Cancel(); |
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115 break; |
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116 } |
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117 case ESending: |
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118 case EReceiving: |
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119 { |
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120 iState = EConnected; |
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121 break; |
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122 } |
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123 |
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124 default: |
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125 { |
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126 break; |
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127 } |
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128 } |
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129 |
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130 LOG( _L("CTcBaseConnection::DoCancel() end") ); |
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131 } |
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132 |
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133 void CTcBaseConnection::ConnectL() |
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134 { |
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135 LOG( _L("CTcBaseConnection::ConnectL() start") ); |
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136 if( iState != EIdle ) |
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137 { |
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138 User::Leave( KErrNotReady ); |
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139 } |
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140 |
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141 iState = EConnecting; |
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142 |
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143 __ASSERT_ALWAYS( iSocketServ, User::Leave( KErrNotReady ) ); |
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144 |
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145 // Open data transfer socket |
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146 User::LeaveIfError( iSocket.Open( *iSocketServ ) ); |
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147 |
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148 // Bearer specific port setup and port selection |
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149 SetupPortL(); |
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150 |
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151 // Set local port |
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152 iSockAddr.SetPort( iLocalPort ); |
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153 |
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154 LOG( _L("CTcBaseConnection::ConnectL() binding port %d"), iLocalPort ); |
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155 // Bind it to listening socket |
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156 TInt status( KErrInUse ); |
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157 for( TInt i = 0; ( i < KTcBindRetryCount ) && ( status != KErrNone ); i++ ) |
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158 { |
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159 status = iListeningSocket.Bind( iSockAddr ); |
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160 if( status == KErrInUse ) |
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161 { |
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162 LOG( _L("CTcBaseConnection::ConnectL() retrying after %dms"), KTcBindDelay / 1000 ); |
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163 User::After( KTcBindDelay ); |
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164 } |
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165 } |
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166 User::LeaveIfError( status ); |
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167 |
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168 LOG( _L("CTcBaseConnection::ConnectL() listening") ); |
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169 |
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170 // Set listening mode, we don't really need that much queue |
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171 User::LeaveIfError( iListeningSocket.Listen( KTcAcceptQueue ) ); |
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172 |
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173 LOG( _L("CTcBaseConnection::ConnectL() accepting") ); |
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174 // Set listening socket to accept incoming |
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175 // connections to real communications socket |
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176 iListeningSocket.Accept( iSocket, iStatus ); |
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177 |
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178 // Now wait for a client to connect |
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179 SetActive(); |
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180 |
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181 if( iObserver ) |
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182 { |
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183 iObserver->BearerCompletion( MTcBearerObserver::EListen, KErrNone ); |
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184 } |
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185 |
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186 LOG( _L("CTcBaseConnection::ConnectL() end") ); |
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187 } |
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188 |
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189 void CTcBaseConnection::ConnectL( TInetAddr& aRemoteAddr ) |
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190 { |
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191 LOG( _L("CTcBaseConnection::ConnectL() 2 start") ); |
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192 if( iState != EIdle && iState != EWaitingRetry) |
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193 { |
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194 User::Leave( KErrNotReady ); |
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195 } |
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196 |
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197 iState = EConnecting; |
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198 |
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199 __ASSERT_ALWAYS( iSocketServ, User::Leave( KErrNotReady ) ); |
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200 |
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201 |
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202 SetupPort2L(); |
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203 |
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204 // Set local port |
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205 iSockAddr.SetPort( iLocalPort ); |
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206 |
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207 LOG( _L("CTcBaseConnection::ConnectL() binding port %d"), iLocalPort ); |
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208 // Bind it to listening socket |
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209 TInt status( KErrInUse ); |
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210 for( TInt i = 0; ( i < KTcBindRetryCount ) && ( status != KErrNone ); i++ ) |
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211 { |
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212 status = iSocket.Bind( iSockAddr ); |
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213 if( status == KErrInUse ) |
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214 { |
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215 LOG( _L("CTcBaseConnection::ConnectL() retrying after %dms"), KTcBindDelay / 1000 ); |
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216 User::After( KTcBindDelay ); |
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217 } |
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218 } |
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219 |
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220 LOG( _L("CTcBaseConnection::ConnectL() connecting") ); |
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221 iSocket.Connect( aRemoteAddr, iStatus ); |
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222 |
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223 // Save address so that we can retry in RunL if connection times out |
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224 iRemoteAddr = aRemoteAddr; |
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225 |
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226 // Now wait for connection establishemt |
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227 SetActive(); |
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228 |
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229 if( iObserver ) |
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230 { |
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231 iObserver->BearerCompletion( MTcBearerObserver::EConnecting, KErrNone ); |
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232 } |
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233 |
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234 LOG( _L("CTcBaseConnection::ConnectL() 2 end") ); |
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235 } |
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236 |
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237 void CTcBaseConnection::Close() |
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238 { |
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239 LOG( _L("CTcBaseConnection::Close() start") ); |
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240 |
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241 if( iState == EIdle ) |
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242 { |
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243 // no need to do anything |
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244 LOG( _L("CTcBaseConnection::Close() end, already closed") ); |
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245 return; |
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246 } |
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247 |
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248 // Close listening socket if its open |
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249 if( iListeningSocket.SubSessionHandle() ) |
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250 { |
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251 iListeningSocket.CancelAll(); |
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252 iListeningSocket.Close(); |
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253 } |
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254 |
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255 // Cancel read/write requests and timeouts |
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256 Cancel(); |
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257 |
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258 // Close down data socket |
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259 iSocket.Close(); |
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260 |
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261 // Close timer |
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262 iTimer.Close(); |
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263 |
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264 iState = EIdle; |
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265 LOG( _L("CTcBaseConnection::Close() end") ); |
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266 } |
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267 |
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268 void CTcBaseConnection::Send( const TDesC8& aDes ) |
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269 { |
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270 LOG( _L("CTcBaseConnection::Send() start") ); |
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271 // Make sure we're in correct state |
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272 __ASSERT_ALWAYS( iState == EConnected, Panic( KErrNotReady ) ); |
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273 __ASSERT_ALWAYS( !IsActive(), Panic( KErrInUse ) ); |
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274 |
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275 // Start writing |
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276 iState = ESending; |
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277 iSocket.Write( aDes, iStatus ); |
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278 SetActive(); |
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279 |
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280 LOG( _L("CTcBaseConnection::Send() end") ); |
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281 } |
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282 |
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283 void CTcBaseConnection::Receive( TDes8& aDes ) |
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284 { |
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285 LOG( _L("CTcBaseConnection::Receive() start") ); |
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286 // Make sure we're in correct state |
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287 __ASSERT_ALWAYS( iState == EConnected, Panic( KErrNotReady ) ); |
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288 __ASSERT_ALWAYS( !IsActive(), Panic( KErrInUse ) ); |
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289 |
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290 // Start reading |
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291 iState = EReceiving; |
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292 iSocket.Read( aDes, iStatus ); |
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293 SetActive(); |
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294 |
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295 LOG( _L("CTcBaseConnection::Receive() end") ); |
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296 } |
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297 |
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298 void CTcBaseConnection::ReceiveOneOrMore( TDes8& aDes ) |
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299 { |
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300 LOG( _L("CTcBaseConnection::ReceiveOneOrMore() start") ); |
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301 // Make sure we're in correct state |
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302 __ASSERT_ALWAYS( iState == EConnected, Panic( KErrNotReady ) ); |
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303 __ASSERT_ALWAYS( !IsActive(), Panic( KErrInUse ) ); |
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304 |
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305 // Start reading |
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306 iState = EReceiving; |
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307 iSocket.RecvOneOrMore( aDes, 0, iStatus, iIgnoredLength ); |
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308 SetActive(); |
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309 |
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310 LOG( _L("CTcBaseConnection::ReceiveOneOrMore() end") ); |
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311 } |
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312 |
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313 void CTcBaseConnection::SetObserver( MTcBearerObserver* aObserver ) |
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314 { |
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315 LOG( _L("CTcBaseConnection::SetObserver( %d )"), (TInt)aObserver ); |
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316 iObserver = aObserver; |
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317 } |
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318 |
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319 void CTcBaseConnection::SetConnection( RSocketServ* aSocketServ, RConnection* aConnection ) |
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320 { |
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321 iSocketServ = aSocketServ; |
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322 iConnection = aConnection; |
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323 } |
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324 |
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325 TInt CTcBaseConnection::LocalPort() const |
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326 { |
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327 return iLocalPort; |
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328 } |
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329 |
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330 void CTcBaseConnection::Notify( TState aState, TInt aStatus ) |
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331 { |
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332 LOG( _L("CTcBaseConnection::Notify( %d, %d ) start"), aState, aStatus ); |
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333 MTcBearerObserver::TOperation op; |
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334 |
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335 switch( aState ) |
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336 { |
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337 case EConnecting: |
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338 { |
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339 op = MTcBearerObserver::EConnect; |
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340 break; |
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341 } |
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342 case ESending: |
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343 { |
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344 op = MTcBearerObserver::ESend; |
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345 break; |
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346 } |
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347 case EReceiving: |
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348 { |
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349 op = MTcBearerObserver::EReceive; |
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350 break; |
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351 } |
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352 |
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353 case EIdle: |
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354 case EConnected: |
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355 default: |
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356 { |
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357 op = MTcBearerObserver::EUnknown; |
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358 break; |
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359 } |
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360 } |
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361 |
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362 if( iObserver ) |
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363 { |
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364 iObserver->BearerCompletion( op, aStatus ); |
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365 } |
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366 LOG( _L("CTcBaseConnection::Notify() end") ); |
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367 } |
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368 |
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369 void CTcBaseConnection::SetupPort2L() |
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370 { |
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371 User::Leave( KErrNotSupported ); |
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372 } |
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373 |