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1 // Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies). |
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2 // All rights reserved. |
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3 // This component and the accompanying materials are made available |
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4 // under the terms of "Eclipse Public License v1.0" |
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5 // which accompanies this distribution, and is available |
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6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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7 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: |
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14 // |
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15 |
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16 #include <e32base.h> |
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17 #include "rsockethandler.h" |
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18 #include "csockethandler.h" |
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19 |
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20 /** |
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21 Constructor. |
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22 */ |
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23 EXPORT_C RSocketHandler::RSocketHandler ( MSocketHandlerObserver& aObserver ) |
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24 : iObserver ( aObserver ) |
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25 { |
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26 } |
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27 |
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28 /** |
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29 Attaches to the open socket. |
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30 |
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31 @param aSocket. The open RInternalSocket. |
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32 */ |
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33 EXPORT_C void RSocketHandler::Attach ( RInternalSocket& aSocket ) |
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34 { |
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35 CancelAll (); |
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36 iSocket = aSocket; |
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37 } |
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38 |
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39 /** |
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40 Connects to a remote host. |
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41 |
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42 @param aAddr. A remote destination address. |
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43 */ |
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44 EXPORT_C void RSocketHandler::Connect ( const TSockAddr& aAddr ) |
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45 { |
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46 TSocketHandlerParams params ( EConnect, &aAddr ); |
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47 ActivateSocketHandler ( params ); |
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48 } |
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49 |
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50 /** |
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51 Facilitates a client/server connection from a remote socket. |
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52 |
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53 On successful completion a new connected socket is returned to the socket handler observer |
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54 and it may then be used to transfer data. |
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55 @param: void. |
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56 @return: void |
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57 */ |
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58 EXPORT_C void RSocketHandler::Accept () |
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59 { |
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60 TSocketHandlerParams params( EAccept ); |
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61 ActivateSocketHandler ( params ); |
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62 } |
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63 |
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64 /** |
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65 Sends data to remote host on a connected socket. |
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66 |
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67 @param aData. The data to be sent. |
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68 */ |
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69 EXPORT_C void RSocketHandler::Send ( RMBufChain& aData ) |
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70 { |
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71 TSocketHandlerParams params ( EMBufSend, &aData ); |
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72 ActivateSocketHandler ( params ); |
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73 } |
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74 |
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75 /** |
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76 Sends data to remote host on a unconnected socket. |
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77 |
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78 @param aData. The data to be sent. |
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79 @param aAddr. A remote destination address |
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80 */ |
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81 EXPORT_C void RSocketHandler::SendTo ( const RMBufChain& aData, TSockAddr& aAddr ) |
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82 { |
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83 TSocketHandlerParams params ( EMBufSendTo, &aData, &aAddr ); |
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84 ActivateSocketHandler ( params ); |
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85 } |
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86 |
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87 /** |
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88 Receives data from a remote host. |
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89 */ |
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90 EXPORT_C void RSocketHandler::Recv () |
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91 { |
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92 TSocketHandlerParams params ( ERecv ); |
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93 ActivateSocketHandler ( params ); |
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94 |
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95 } |
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96 |
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97 /** |
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98 Receives data from a remote host through a unconnected socket and returns a source address. |
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99 */ |
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100 EXPORT_C void RSocketHandler::RecvFrom () |
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101 { |
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102 TSocketHandlerParams params ( ERecvFrom ); |
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103 ActivateSocketHandler ( params ); |
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104 |
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105 } |
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106 |
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107 /** |
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108 Sends data to remote host on a connected socket. |
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109 |
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110 @param aData. The data to be sent. |
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111 |
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112 EXPORT_C void RSocketHandler::Send ( const TDesC8& aData ) |
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113 { |
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114 TSocketHandlerParams params ( EDescSend, &aData ); |
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115 ActivateSocketHandler ( params ); |
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116 |
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117 } |
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118 |
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119 Sends data to remote host on a unconnected socket. |
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120 |
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121 @param aData. The data to be sent. |
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122 @param aAddr. A remote destination address |
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123 |
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124 EXPORT_C void RSocketHandler::SendTo ( const TDesC8& aData, TSockAddr& aAddr ) |
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125 { |
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126 TSocketHandlerParams params ( EDescSendTo, &aData, &aAddr ); |
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127 ActivateSocketHandler ( params ); |
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128 } |
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129 |
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130 |
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131 Applies an asynchronous I/O control operation on a socket. |
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132 |
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133 @param aCommand. Ioctl command. |
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134 |
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135 EXPORT_C void RSocketHandler::Ioctl ( TUint aCommand, TDes8* aData = 0 , TUint aLevel = KLevelUnspecified ) |
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136 { |
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137 TSocketHandlerParams params ( EIoctl, aCommand, aData, aLevel ); |
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138 ActivateSocketHandler ( params ); |
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139 } |
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140 |
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141 |
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142 Cancels an outstanding socket operation. |
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143 |
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144 @param aOperation. Operation to be cancelled. |
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145 |
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146 EXPORT_C void RSocketHandler::Cancel ( TOperation aOperation ) |
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147 { |
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148 CSocketHandler* handler = ActiveSocketHandler ( aOperation ); |
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149 if ( handler ) |
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150 handler->Cancel (); |
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151 } |
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152 */ |
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153 |
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154 /** |
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155 Cancels all outstanding operations. |
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156 */ |
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157 EXPORT_C void RSocketHandler::CancelAll () |
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158 { |
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159 // The descrtrutor of CSocketHandler will take care of cancel |
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160 iSocketHandlers.ResetAndDestroy (); |
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161 } |
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162 |
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163 /** |
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164 Finds the first free socket handler to perform the socket operation and if none |
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165 available it creates a new socket handler. |
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166 |
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167 @param aOperation. Socket operation to be performed. |
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168 @return A free socket handler to perform the socket operation. |
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169 */ |
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170 CSocketHandler* RSocketHandler::FreeSocketHandler ( TOperation aOperation ) |
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171 { |
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172 CSocketHandler* freeHandler = ActiveSocketHandler ( aOperation ); |
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173 if ( freeHandler == NULL ) |
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174 { |
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175 // No active socket handlers for this operation |
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176 // Find the first free one |
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177 for ( TInt i = 0; i < iSocketHandlers.Count(); ++i ) |
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178 { |
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179 if ( ( iSocketHandlers[i]->IsRunning ( aOperation ) ) ) |
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180 { |
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181 return iSocketHandlers[i]; |
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182 } |
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183 } |
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184 // None available. Create one, append to the array and return |
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185 CSocketHandler* handler = new CSocketHandler ( iSocket, iObserver ); |
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186 if ( handler != NULL ) |
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187 { |
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188 iSocketHandlers.Append ( handler ); |
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189 return handler; |
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190 } |
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191 } |
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192 else if ( freeHandler->IsRunning ( aOperation ) ) |
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193 { |
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194 __ASSERT_DEBUG ( 1, User::Invariant () ); |
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195 } |
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196 |
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197 return freeHandler; |
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198 } |
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199 |
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200 /** |
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201 Finds an active socket handler which matches the socket operation. |
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202 |
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203 @param aOperation. Socket operation to be performed. |
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204 @return A free socket handler to perform the socket operation. |
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205 */ |
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206 CSocketHandler* RSocketHandler::ActiveSocketHandler ( TOperation aOperation ) |
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207 { |
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208 // Find the active socket handler. |
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209 for ( TInt i = 0; i < iSocketHandlers.Count(); ++i ) |
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210 { |
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211 if ( (iSocketHandlers[i]->IsRunning ( aOperation )) ) |
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212 { |
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213 return iSocketHandlers[i]; |
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214 } |
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215 } |
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216 return NULL; |
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217 } |
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218 |
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219 /** |
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220 Finds or creates a socket handler which matches the socket operation and |
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221 submits the request to socket handler. |
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222 |
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223 @param aParams. Socket operation parameters. |
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224 */ |
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225 void RSocketHandler::ActivateSocketHandler ( TSocketHandlerParams& aParams ) |
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226 { |
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227 TOperation op = static_cast < TOperation > ( aParams.iArgs[0] ); |
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228 CSocketHandler* handler = FreeSocketHandler ( op ); |
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229 if ( handler == NULL ) |
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230 { |
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231 // Possibly failed due to nomemory. |
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232 iObserver.Error ( op, KErrNoMemory ); |
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233 return; |
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234 } |
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235 handler->Activate ( aParams ); |
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236 } |