author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Tue, 02 Feb 2010 01:09:52 +0200 | |
changeset 0 | b16258d2340f |
permissions | -rw-r--r-- |
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// Copyright (c) 2003-2009 Nokia Corporation and/or its subsidiary(-ies). |
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// All rights reserved. |
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// This component and the accompanying materials are made available |
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// under the terms of "Eclipse Public License v1.0" |
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// which accompanies this distribution, and is available |
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// at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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// |
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// Initial Contributors: |
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// Nokia Corporation - initial contribution. |
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// |
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// Contributors: |
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// |
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// Description: |
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// |
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#include "csocketlistener.h" |
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#include "csocket.h" |
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#include "msocketcontrollerfactory.h" |
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#include "mcommsinfoprovider.h" |
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#include "msocketlistenobserver.h" |
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#include "csocketcontroller.h" |
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#include "httptransporthandlercommon.h" |
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#include "thttptrlayerpanic.h" |
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const TInt KListenQSize = 5; |
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CSocketListener* CSocketListener::NewL( |
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MSocketControllerFactory& aSocketControllerFactory, |
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MCommsInfoProvider& aCommsInfoProvider, TBool aPriority |
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) |
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/** |
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The factory constructor. |
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@param aSocketControllerFactory The socket controller factory. |
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@param aCommsInfoProvider The comms info provider. |
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@return A pointer to a fully constructed object. |
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*/ |
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{ |
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return new (ELeave) CSocketListener(aSocketControllerFactory, aCommsInfoProvider, aPriority); |
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} |
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CSocketListener::~CSocketListener() |
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/** |
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Destructor. |
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*/ |
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{ |
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// Cancel any outstanding requests |
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Cancel(); |
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// Cleanup... |
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delete iAcceptingSocket; |
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delete iListeningSocket; |
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// __FLOG_CLOSE; |
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} |
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CSocketListener::CSocketListener( |
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MSocketControllerFactory& aSocketControllerFactory, |
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MCommsInfoProvider& aCommsInfoProvider, |
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TBool aPriority |
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) |
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: CActive(CActive::EPriorityStandard), iSocketControllerFactory(aSocketControllerFactory), |
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iCommsInfoProvider(aCommsInfoProvider) |
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/** |
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Constructor. |
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@param aSocketControllerFactory The socket controller factory. |
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@param aCommsInfoProvider The comms info provider. |
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*/ |
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{ |
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if(aPriority) |
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{ |
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CActive::SetPriority(CActive::EPriorityHigh); |
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} |
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CActiveScheduler::Add(this); |
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// __FLOG_OPEN("http", "httptransporthandler.txt"); |
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} |
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void CSocketListener::Listen(MSocketListenObserver& aObserver, TUint16 aPort) |
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/** |
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The socket listener starts listening on the specified port. |
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@param aPort The specified listening port. |
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@pre The socket listener is in the Idle state. |
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@post The socket listener is not in the Idle state. |
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*/ |
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{ |
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__ASSERT_DEBUG( iState == EIdle, THttpTrLayerPanic::Panic(THttpTrLayerPanic::EBadSocketListenerState) ); |
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iObserver = &aObserver; |
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iPort = aPort; |
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// Move to the StartListen state and self complete |
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iState = EStartListen; |
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CompleteSelf(); |
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} |
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void CSocketListener::StopListen() |
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/** |
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The socket listener stops listening. If the socket listener is in the Idle state this |
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function will have no effect. |
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@pre The socket listener is not in the Idle state. |
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@post The socket listener is in the Idle state. |
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*/ |
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{ |
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if( iState != EIdle ) |
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106 |
{ |
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107 |
// Cancel any outstanding requests |
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108 |
Cancel(); |
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109 |
|
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110 |
// Call RunL() with an iStatus of KErrCancel - this will notify the observer |
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111 |
// that the listening service has stopped. |
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112 |
TRequestStatus* pStat = &iStatus; |
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113 |
User::RequestComplete(pStat, KErrCancel); |
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114 |
SetActive(); |
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115 |
|
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116 |
__FLOG_0(_T8("!! Listen service stopped")); |
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117 |
__FLOG_2(_T8("-> cancel listen on local port %d : expect %d error code"), iPort, iStatus.Int()); |
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118 |
} |
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119 |
} |
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120 |
|
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121 |
void CSocketListener::CompleteSelf() |
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122 |
/** |
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123 |
Requests that the socket listener complete itself. This will cause the |
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124 |
RunL() to be called by the scheduler at the next opportunity. |
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125 |
@pre The socket listener object is not active. |
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126 |
@post The socket listener object is active and the request has been |
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127 |
completed. |
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128 |
*/ |
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129 |
{ |
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130 |
TRequestStatus* pStat = &iStatus; |
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131 |
User::RequestComplete(pStat, KErrNone); |
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132 |
SetActive(); |
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133 |
} |
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134 |
|
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135 |
/* |
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136 |
* Methods from CActive |
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137 |
*/ |
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138 |
|
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139 |
void CSocketListener::RunL() |
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140 |
/** |
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141 |
The request servicing function. Behaviour depends on the state of the socket |
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142 |
listener. |
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143 |
*/ |
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144 |
{ |
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145 |
// Leave if the listening socket reported an error |
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146 |
User::LeaveIfError(iStatus.Int()); |
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147 |
|
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148 |
switch( iState ) |
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149 |
{ |
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150 |
case EStartListen: |
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151 |
{ |
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152 |
__ASSERT_DEBUG( iListeningSocket == NULL, User::Invariant() ); |
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153 |
|
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154 |
__FLOG_1(_T8("Start listen service -> on local port %d"), iPort); |
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155 |
|
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156 |
// Open the listening socket on specified port |
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157 |
iListeningSocket = CSocket::NewL(iCommsInfoProvider, CSocket::EProtocolSocket); |
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158 |
|
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159 |
// Start the listening service |
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160 |
User::LeaveIfError(iListeningSocket->Listen(KListenQSize, iPort)); |
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161 |
|
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162 |
// Move to the Listening state and self complete |
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163 |
iState = EListening; |
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164 |
CompleteSelf(); |
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165 |
} break; |
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166 |
case EListening: |
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167 |
{ |
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168 |
// Create a new accepting socket - marry it to the listening socket |
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169 |
iAcceptingSocket = CSocket::NewL(iCommsInfoProvider, CSocket::EBlankSocket); |
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170 |
iListeningSocket->Accept(*iAcceptingSocket, iStatus); |
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|
171 |
|
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172 |
// Move to the Connected state and go active |
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173 |
iState = EConnected; |
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174 |
SetActive(); |
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175 |
} break; |
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176 |
case EConnected: |
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177 |
{ |
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178 |
__OOM_LEAVE_TEST |
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179 |
|
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180 |
#if defined (_DEBUG) && defined (_LOGGING) |
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181 |
TInetAddr addr; |
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182 |
iAcceptingSocket->RemoteName(addr); |
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|
183 |
|
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|
184 |
TBuf<KIpv6MaxAddrSize> ip16bit; |
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185 |
addr.Output(ip16bit); |
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|
186 |
|
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187 |
TBuf8<KIpv6MaxAddrSize> ip; |
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188 |
ip.Copy(ip16bit); |
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|
189 |
|
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190 |
__FLOG_1(_T8("!! Listen service received connection on local port %d"), iPort); |
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191 |
__FLOG_2(_T8("-> connection with %S, remote port %d"), &ip, addr.Port()); |
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|
192 |
#endif |
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|
193 |
|
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194 |
// A remote client has connected to the listening socket - lose ownership |
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195 |
// of the accepting socket. |
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196 |
CSocket* connectedSocket = iAcceptingSocket; |
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197 |
iAcceptingSocket = NULL; |
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|
198 |
|
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199 |
// Create a socket controller object to own the connected socket. |
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200 |
CSocketController* socketController = iSocketControllerFactory.CreateSocketControllerLC(connectedSocket); |
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|
201 |
|
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202 |
// Inform the socket listen observer that a TCP connection is established - |
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203 |
// pass back the input and output stream objects. |
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204 |
iObserver->ConnectionReceivedL(socketController->InputStream(), socketController->OutputStream()); |
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|
205 |
|
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206 |
// Remove socket controller from cleanup stack - transferring ownership |
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207 |
// to the store. |
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208 |
CleanupStack::Pop(socketController); |
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|
209 |
|
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210 |
// Add the socket controller in the store - ownership is transferred to |
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211 |
// the store. |
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212 |
iSocketControllerFactory.AddToStoreL(socketController); |
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213 |
|
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214 |
__FLOG_1(_T8("Continue listen service -> on local port %d"), iPort); |
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215 |
|
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216 |
// Move to the Listening state and self complete |
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217 |
iState = EListening; |
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218 |
CompleteSelf(); |
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219 |
} break; |
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220 |
case EIdle: |
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221 |
default: |
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222 |
THttpTrLayerPanic::Panic(THttpTrLayerPanic::EBadSocketListenerState); |
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223 |
break; |
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224 |
} |
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225 |
} |
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226 |
|
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227 |
void CSocketListener::DoCancel() |
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228 |
/** |
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229 |
The asynchronous request cancel. |
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230 |
*/ |
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231 |
{ |
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232 |
// Check state... |
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233 |
if( iState == EConnected ) |
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234 |
{ |
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235 |
// Need to cancel the accept request |
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236 |
iListeningSocket->CancelAccept(); |
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237 |
} |
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238 |
} |
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239 |
|
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240 |
TInt CSocketListener::RunError(TInt aError) |
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241 |
/** |
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242 |
The request servicing error handler. This function does any necessary cleanup. |
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243 |
The socket listener is then placed in the Idle state. |
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244 |
@param aError The leave code. |
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245 |
@return A value of KErrNone.if the error has been handled, any other |
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246 |
value if it has not been handled. |
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247 |
@post The socket listener is in the Idle state. |
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248 |
*/ |
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249 |
{ |
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250 |
__FLOG_1(_T8("!! Error : %d"), aError); |
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251 |
__FLOG_1(_T8("-> listen on local port %d failed"), iPort); |
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252 |
|
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253 |
switch( iState ) |
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254 |
{ |
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255 |
case EConnected: |
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256 |
{ |
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257 |
// Either the socket controller factory left in AddToStoreL() or in |
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258 |
// CreateSocketControllerLC(), or the observer left in |
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259 |
// ConnectionReceivedL() or the accept request completed with an error |
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260 |
// code - which ever just need to delete the accepting socket. |
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261 |
delete iAcceptingSocket; |
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262 |
iAcceptingSocket = NULL; |
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263 |
// Drop through to the Listening state case... |
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264 |
} |
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265 |
case EListening: |
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266 |
{ |
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267 |
// Failed to open the accepting socket - do nothing except drop through |
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268 |
// to the PendingListening state case... |
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269 |
} |
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270 |
case EStartListen: |
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271 |
{ |
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272 |
// In EReadyForDNS or EReadyToConnect states, KErrNotReady may be |
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273 |
// returned by the comms call that require a connection. The RConnection |
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274 |
// that is passed in MUST be started or this error will occur. If we own |
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|
275 |
// the RConnection we should start the RConnection again, else if our |
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|
276 |
// client own the RConnection, we just propagate the Comms error. |
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|
277 |
if( iCommsInfoProvider.HasConnection() && iCommsInfoProvider.OwnsConnection() && aError == KErrNotReady && iState != EConnected ) |
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|
278 |
{ |
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|
279 |
__FLOG_0(_T8("-> re-starting comms interface...")); |
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|
280 |
|
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Revision: 201003
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|
281 |
// We own the RConnection and the error is KErrNotReady |
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|
282 |
aError = iCommsInfoProvider.Connection().Start(); |
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|
283 |
if( aError==KErrNone ) |
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|
284 |
{ |
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|
285 |
__FLOG_0(_T8("!! Re-started comms interface")); |
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|
286 |
__FLOG_1(_T8("-> start listen on local port %d again"), iPort); |
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|
287 |
|
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|
288 |
// RConnection started successfully, try to connect again |
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|
289 |
CompleteSelf(); |
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|
290 |
return KErrNone; |
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|
291 |
} |
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Revision: 201003
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|
292 |
#if defined (_DEBUG) && defined (_LOGGING) |
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|
293 |
else |
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|
294 |
{ |
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|
295 |
__FLOG_1(_T8("!! Error : %d"), aError); |
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|
296 |
__FLOG_0(_T8("-> failed to re-start comms interface")); |
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|
297 |
__FLOG_1(_T8("-> listen on port %d failed"), iPort); |
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|
298 |
} |
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Revision: 201003
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|
299 |
#endif |
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Revision: 201003
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|
300 |
} |
b16258d2340f
Revision: 201003
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parents:
diff
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|
301 |
|
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Revision: 201003
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|
302 |
// Failed to either start the listening service or create the listening |
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Revision: 201003
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|
303 |
// socket - delete the listening socket. |
b16258d2340f
Revision: 201003
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|
304 |
delete iListeningSocket; |
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Revision: 201003
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|
305 |
iListeningSocket = NULL; |
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Revision: 201003
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diff
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|
306 |
|
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Revision: 201003
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|
307 |
// Move back to the Idle state. |
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Revision: 201003
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|
308 |
iState = EIdle; |
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Revision: 201003
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|
309 |
} break; |
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Revision: 201003
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diff
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|
310 |
case EIdle: |
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Revision: 201003
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|
311 |
default: |
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Revision: 201003
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parents:
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|
312 |
THttpTrLayerPanic::Panic(THttpTrLayerPanic::EBadSocketListenerState); |
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Revision: 201003
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|
313 |
break; |
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Revision: 201003
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parents:
diff
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|
314 |
} |
b16258d2340f
Revision: 201003
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parents:
diff
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|
315 |
|
b16258d2340f
Revision: 201003
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parents:
diff
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|
316 |
// Inform the manager of the error. |
b16258d2340f
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
317 |
return iObserver->HandleListenError(aError); |
b16258d2340f
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
318 |
} |