author | Petteri Saari <petteri.saari@digia.com> |
Thu, 02 Dec 2010 15:23:48 +0200 | |
branch | MSRP_FrameWork |
changeset 60 | 7634585a4347 |
parent 0 | 307788aac0a8 |
permissions | -rw-r--r-- |
0
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// Copyright (c) 2002-2009 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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// Name : CIcmpV4Receiver.cpp |
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// Part of : ConnectionMgr |
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// Version : SIP/4.0 |
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// Destination Unreachable Message: |
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// 0 1 2 3 |
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// 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 |
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// | Type | Code | Checksum | |
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// | unused | |
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// | Internet Header + 64 bits of Original Data Datagram | |
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// Internet header: |
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// 0 1 2 3 |
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// 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 |
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// |Version| IHL |Type of Service| Total Length | |
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// | Identification |Flags| Fragment Offset | |
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// | Time to Live | Protocol | Header Checksum | |
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// | Source Address | |
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// | Destination Address | |
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// | Options | Padding | |
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// User datagram: |
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// 0 7 8 15 16 23 24 31 |
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// | Source | Destination | |
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// | Port | Port | |
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// | Length | Checksum | |
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// | data octets ... |
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// In the code the data is located in bytes. |
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// |
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|
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|
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|
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|
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#include <ip4_hdr.h> |
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#include <icmp6_hdr.h> // This is identical to ICMPv4 header |
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#include <udp_hdr.h> |
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#include <in_sock.h> |
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#include "CIcmpV4Receiver.h" |
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#include "MIcmpReceiver.h" |
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#include "CommonConsts.h" |
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#include "SipLogs.h" |
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|
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|
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// ----------------------------------------------------------------------------- |
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// CIcmpV4Receiver::NewL |
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// ----------------------------------------------------------------------------- |
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// |
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CIcmpV4Receiver* CIcmpV4Receiver::NewL(MIcmpErrorObserver& aObserver, |
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RSocketServ& aServer) |
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{ |
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CIcmpV4Receiver* self = new (ELeave) CIcmpV4Receiver(); |
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CleanupStack::PushL(self); |
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self->ConstructL(aObserver, aServer); |
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CleanupStack::Pop(); |
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return self; |
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} |
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|
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// ----------------------------------------------------------------------------- |
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// CIcmpV4Receiver::CIcmpV4Receiver |
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// ----------------------------------------------------------------------------- |
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// |
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CIcmpV4Receiver::CIcmpV4Receiver() : CActive( CActive::EPriorityStandard ) |
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{ |
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} |
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|
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// ----------------------------------------------------------------------------- |
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// CIcmpV4Receiver::ConstructL |
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// ----------------------------------------------------------------------------- |
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// |
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void CIcmpV4Receiver::ConstructL(MIcmpErrorObserver& aObserver, |
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RSocketServ& aServer) |
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{ |
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CActiveScheduler::Add(this); |
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iObserver = &aObserver; |
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iServer = &aServer; |
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|
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// Start |
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User::LeaveIfError(iSocket.Open(*iServer, KAfInet, KSockDatagram, |
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KProtocolInetIcmp)); |
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Receive(); |
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} |
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|
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// ----------------------------------------------------------------------------- |
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// CIcmpV4Receiver::~CIcmpV4Receiver |
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// ----------------------------------------------------------------------------- |
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// |
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CIcmpV4Receiver::~CIcmpV4Receiver() |
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{ |
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Cancel(); |
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iSocket.Close(); |
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} |
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|
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// ----------------------------------------------------------------------------- |
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// CIcmpV4Receiver::RunL |
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// ----------------------------------------------------------------------------- |
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// |
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void CIcmpV4Receiver::RunL() |
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{ |
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if (iStatus == KErrNone) |
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{ |
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CheckError(); |
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Receive(); |
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} |
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} |
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|
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// Disabled PC-Lint warning for "Suspicious pointer-to-pointer conversion |
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// (area too small))". It was caused by TUin8* to TInet6xxx typecasts and could |
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// not be avoided otherwise. |
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/*lint -e826 */ |
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|
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// ----------------------------------------------------------------------------- |
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// CIcmpV4Receiver::CheckError |
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// ----------------------------------------------------------------------------- |
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// |
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void CIcmpV4Receiver::CheckError() |
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{ |
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const TUint KDestinationUnreachable = 3; |
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128 |
|
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// Pointer to ICMP header |
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TInet6HeaderICMP* icmpPtr = ( TInet6HeaderICMP* ) iData.Ptr(); |
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|
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// Pointer to IPv4 header |
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TInet6HeaderIP4* ipv4Ptr = ( TInet6HeaderIP4* )( iData.Ptr() + 8 ); |
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134 |
|
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// Error message type |
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TUint32 error = icmpPtr->Type(); |
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if ( error == KDestinationUnreachable ) |
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{ |
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// Check that protocol is UDP |
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TUint32 protocol = ipv4Ptr->Protocol(); |
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if ( protocol == KProtocolInetUdp ) |
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{ |
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// Pointer to UDP data |
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TInet6HeaderUDP* udpPtr = ( TInet6HeaderUDP* )( ipv4Ptr->EndPtr() ); |
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|
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// Get the destination port number |
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iAddress.SetPort( udpPtr->DstPort() ); |
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|
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// Set the destination address |
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iAddress.SetAddress( ipv4Ptr->DstAddr() ); |
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|
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__SIP_INT_LOG1( "ICMP error", error ) |
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__SIP_ADDR_LOG( "ICMP error address", iAddress ) |
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|
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// Error message to observer |
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iObserver->IcmpError( iAddress ); |
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} |
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} |
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} |
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|
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// ----------------------------------------------------------------------------- |
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// CIcmpV4Receiver::DoCancel |
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// ----------------------------------------------------------------------------- |
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// |
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void CIcmpV4Receiver::DoCancel() |
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{ |
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iSocket.CancelRecv(); |
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} |
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|
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// ----------------------------------------------------------------------------- |
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// CIcmpV4Receiver::Receive |
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// ----------------------------------------------------------------------------- |
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// |
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void CIcmpV4Receiver::Receive() |
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{ |
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if(!IsActive()) |
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{ |
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iSocket.Recv( iData, 0, iStatus ); |
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SetActive(); |
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} |
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} |