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SipISTList.cpp
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342 lines (301 loc) · 9.19 KB
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/*
* Copyright (C) 2012 Yee Young Han <websearch@naver.com> (http://blog.naver.com/websearch)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "SipISTList.h"
#include "SipStack.h"
#include "SipDeleteQueue.h"
#include "TimeUtility.h"
#include "MemoryDebug.h"
/**
* @ingroup SipStack
* @brief 생성자
*/
CSipISTList::CSipISTList()
{
}
/**
* @ingroup SipStack
* @brief 소멸자
*/
CSipISTList::~CSipISTList()
{
}
/**
* @ingroup SipStack
* @brief Invite Server Transaction List 에 SIP 메시지를 추가한다.
* @param pclsMessage SIP 메시지 저장 구조체
* @returns 성공하면 true 를 리턴하고 실패하면 false 를 리턴한다.
*/
bool CSipISTList::Insert( CSipMessage * pclsMessage )
{
std::string strKey;
INVITE_TRANSACTION_MAP::iterator itMap;
bool bRes = false;
if( pclsMessage == NULL ) return false;
if( GetKey( pclsMessage, strKey ) == false ) return false;
if( pclsMessage->IsRequest() )
{
m_clsMutex.acquire();
itMap = m_clsMap.find( strKey );
if( itMap == m_clsMap.end() )
{
if( pclsMessage->IsMethod( SIP_METHOD_ACK ) )
{
INVITE_CALL_ID_MAP::iterator itCIM;
std::string strCallId;
pclsMessage->GetCallIdSeq( strCallId );
itCIM = m_clsCallIdMap.find( strCallId );
if( itCIM != m_clsCallIdMap.end() )
{
itMap = m_clsMap.find( itCIM->second );
if( itMap != m_clsMap.end() )
{
// 2014년4월3일 이전 버전에서는 SIP Call-ID 만 비교하였지만 아래의 ACK 가 NULL 인지 구분하는 기능 때문에 정상적으로 동작하였음.
// 만약 아래의 기능이 없었다면 2개의 ReINVITE 에 대한 ACK 를 수신하였을 때에 첫번째 ReINVITE 에만 ACK 를 2번 저장하여서
// 두번째 ReINVITE 에 대한 ACK 가 수신되지 않을 것으로 오동작할 수 있습니다.
if( itMap->second->m_pclsAck == NULL )
{
if( itMap->second->m_pclsResponse && itMap->second->m_pclsResponse->m_iStatusCode == SIP_UNAUTHORIZED )
{
// INVITE 에 대한 응답 메시지가 401 인 ACK 메시지를 수신하면 Transaction 을 바로 삭제한다.
delete itMap->second;
m_clsMap.erase( itMap );
m_clsCallIdMap.erase( itCIM );
}
else
{
itMap->second->m_pclsAck = pclsMessage;
gettimeofday( &itMap->second->m_sttStopTime, NULL );
bRes = true;
}
}
}
}
}
else
{
CSipInviteTransaction * psttTransaction = new CSipInviteTransaction();
if( psttTransaction )
{
psttTransaction->m_pclsRequest = pclsMessage;
gettimeofday( &psttTransaction->m_sttStartTime, NULL );
m_clsMap.insert( INVITE_TRANSACTION_MAP::value_type( strKey, psttTransaction ) );
itMap = m_clsMap.find( strKey );
bRes = true;
CSipMessage * psttResponse = itMap->second->m_pclsRequest->CreateResponse( SIP_TRYING );
if( psttResponse )
{
itMap->second->m_pclsResponse = psttResponse;
m_pclsSipStack->Send( psttResponse );
}
INVITE_CALL_ID_MAP::iterator itCIM;
std::string strCallId;
pclsMessage->GetCallIdSeq( strCallId );
itCIM = m_clsCallIdMap.find( strCallId );
if( itCIM == m_clsCallIdMap.end() )
{
m_clsCallIdMap.insert( INVITE_CALL_ID_MAP::value_type( strCallId, strKey ) );
}
}
}
}
else
{
if( pclsMessage->IsMethod( SIP_METHOD_ACK ) )
{
if( itMap->second->m_pclsResponse && itMap->second->m_pclsResponse->m_iStatusCode == SIP_UNAUTHORIZED )
{
// INVITE 에 대한 응답 메시지가 401 인 ACK 메시지를 수신하면 Transaction 을 바로 삭제한다.
delete itMap->second;
m_clsMap.erase( itMap );
INVITE_CALL_ID_MAP::iterator itCIM;
std::string strCallId;
pclsMessage->GetCallIdSeq( strCallId );
itCIM = m_clsCallIdMap.find( strCallId );
if( itCIM != m_clsCallIdMap.end() )
{
m_clsCallIdMap.erase( itCIM );
}
}
else if( itMap->second->m_pclsAck == NULL )
{
itMap->second->m_pclsAck = pclsMessage;
gettimeofday( &itMap->second->m_sttStopTime, NULL );
bRes = true;
}
}
else if( itMap->second->m_pclsResponse )
{
m_pclsSipStack->Send( itMap->second->m_pclsResponse, false );
++m_iReSendCount;
}
}
m_clsMutex.release();
}
else
{
pclsMessage->MakePacket();
m_clsMutex.acquire();
itMap = m_clsMap.find( strKey );
if( itMap != m_clsMap.end() )
{
if( itMap->second->m_pclsResponse == NULL )
{
bRes = true;
itMap->second->m_pclsResponse = pclsMessage;
itMap->second->m_iStatusCode = pclsMessage->m_iStatusCode;
}
else if( pclsMessage->m_iStatusCode > itMap->second->m_iStatusCode )
{
bRes = true;
gclsSipDeleteQueue.Insert( itMap->second->m_pclsResponse );
itMap->second->m_pclsResponse = pclsMessage;
itMap->second->m_iStatusCode = pclsMessage->m_iStatusCode;
}
if( bRes )
{
if( pclsMessage->m_iStatusCode >= 200 )
{
gettimeofday( &itMap->second->m_sttStartTime, NULL );
}
}
}
m_clsMutex.release();
}
return bRes;
}
/**
* @ingroup SipStack
* @brief Invite Server Transaction List 에서 삭제할 항목은 삭제하고 ACK 를 수신하지 못 한 항목은 응답 메시지를 재전송해 준다.
* @param psttTime 실행한 시간
*/
void CSipISTList::Execute( struct timeval * psttTime )
{
INVITE_TRANSACTION_MAP::iterator itMap, itNext;
INVITE_CALL_ID_MAP::iterator itCIM;
SIP_MESSAGE_LIST clsResponseList;
std::string strCallId;
m_clsMutex.acquire();
for( itMap = m_clsMap.begin(); itMap != m_clsMap.end(); ++itMap )
{
LOOP_START:
if( itMap->second->m_sttStopTime.tv_sec > 0 )
{
if( DiffTimeval( &itMap->second->m_sttStopTime, psttTime ) >= 5000 )
{
itNext = itMap;
++itNext;
itMap->second->m_pclsRequest->GetCallIdSeq( strCallId );
delete itMap->second;
m_clsMap.erase( itMap );
itCIM = m_clsCallIdMap.find( strCallId );
if( itCIM != m_clsCallIdMap.end() )
{
m_clsCallIdMap.erase( itCIM );
}
if( itNext == m_clsMap.end() ) break;
itMap = itNext;
goto LOOP_START;
}
}
else if( itMap->second->m_iStatusCode >= 200 && itMap->second->m_pclsAck == NULL )
{
if( DiffTimeval( &itMap->second->m_sttStartTime, psttTime ) >= m_arrICTReSendTime[itMap->second->m_iReSendCount] )
{
++itMap->second->m_iReSendCount;
if( itMap->second->m_iReSendCount == MAX_ICT_RESEND_COUNT )
{
memcpy( &itMap->second->m_sttStopTime, psttTime, sizeof(itMap->second->m_sttStopTime) );
// INVITE 응답 메시지로 200 OK 를 전송하고 이에 대한 ACK 를 수신하지 못 한 경우 timeout 처리한다.
if( itMap->second->m_iStatusCode == 200 )
{
clsResponseList.push_back( itMap->second->m_pclsResponse );
}
}
else if( itMap->second->m_pclsResponse->m_eTransport == E_SIP_UDP )
{
m_pclsSipStack->Send( itMap->second->m_pclsResponse, false );
++m_iReSendCount;
}
}
}
}
m_clsMutex.release();
for( SIP_MESSAGE_LIST::iterator itList = clsResponseList.begin(); itList != clsResponseList.end(); ++itList )
{
m_pclsSipStack->SendTimeout( m_pclsSipStack->m_clsSetup.m_iUdpThreadCount, *itList );
}
clsResponseList.clear();
}
/**
* @ingroup SipStack
* @brief Invite Server Transaction List 의 모든 항목을 삭제한다.
*/
void CSipISTList::DeleteAll( )
{
INVITE_TRANSACTION_MAP::iterator itMap;
m_clsMutex.acquire();
for( itMap = m_clsMap.begin(); itMap != m_clsMap.end(); ++itMap )
{
delete itMap->second;
}
m_clsMap.clear();
m_clsCallIdMap.clear();
m_clsMutex.release();
}
/**
* @ingroup SipStack
* @brief Invite Server Transaction List 의 크기를 리턴한다.
* @returns Invite Server Transaction List 의 크기를 리턴한다.
*/
int CSipISTList::GetSize( )
{
int iSize;
m_clsMutex.acquire();
iSize = (int)m_clsMap.size();
m_clsMutex.release();
return iSize;
}
/**
* @ingroup SipStack
* @brief IST 자료구조에 저장된 SIP Call-ID 들을 문자열에 저장한다.
* @param strBuf SIP Call-ID 들을 저장할 문자열
*/
void CSipISTList::GetString( CMonitorString & strBuf )
{
INVITE_TRANSACTION_MAP::iterator itMap;
strBuf.Clear();
m_clsMutex.acquire();
for( itMap = m_clsMap.begin(); itMap != m_clsMap.end(); ++itMap )
{
strBuf.AddRow( itMap->first );
}
m_clsMutex.release();
}
/**
* @ingroup SipStack2
* @brief SIP Call-ID 자료구조에 저장된 개수를 리턴한다.
* @returns SIP Call-ID 자료구조에 저장된 개수를 리턴한다.
*/
int CSipISTList::GetCallIdCount( )
{
int iCount = 0;
m_clsMutex.acquire();
iCount = (int)m_clsCallIdMap.size();
m_clsMutex.release();
return iCount;
}