OpenCORE Timeout 문제

그지 같은 OpenCORE로 스트리밍 재생을 하려면 발생하는 문제가 Timeout 문제이다.

다운로드 받는 루틴에 Timer를 끼고 들어간다.

여러종류의 타이머를 작동시키는데 다음과 같다. 

./nodes/pvprotocolenginenode/protocol_common/src/pvmf_protocol_engine_node_common.h

enum NetworkTimerType { SERVER_RESPONSE_TIMER_ID = 0, SERVER_INACTIVITY_TIMER_ID, SERVER_KEEPALIVE_TIMER_ID, SERVER_RESPONSE_TIMER_ID_FOR_STOPEOS_LOGGING, // handle data processing in case of no data input (PE node will become idle) for download/progressive streaming, // so there should be a way to activate PE node to continue data processing if needed WALL_CLOCK_TIMER_ID, // a timer to report buffer status periodically, say at every up to 2sec, at least buffer status has to be reported // which tells our system is running BUFFER_STATUS_TIMER_ID };

nodes/pvprotocolenginenode/base/src/pvmf_protocol_engine_node.cpp

에 보면 

void PVMFProtocolEngineNode::TimeoutOccurred(int32 timerID, int32 timeoutInfo) { OSCL_UNUSED_ARG(timeoutInfo); LOGINFODATAPATH((0, "PVMFProtocolEngineNode::TimeoutOccurred() timerID = %d, (0-server response, 1-inactivity, 2-KeepAlive, 3-Logging response, 4-Wall clock, 5-Buffer status timer), iInterfaceState=%d", timerID, (int32)iInterfaceState)); gprintf("^^^^JHC22 iProtocolContainer->handleTimeout(timerID); timerID===>%d", timerID); iProtocolContainer->handleTimeout(timerID); }

위와 같은 것이 있는데

타임아웃이 발생하면 여기서 에러가 떨어진다.

TimeoutOccerred를 호출하는 곳은 OSCL 부분에 있다.

./oscl/oscl/osclproc/src/oscl_timer.h

template<class Alloc> void OsclTimer<Alloc>::TimerBaseElapsed() { uint8 expiredFound = 0; { // call all whose timers have expired for (entries_type_iterator it = iEntries.begin(); it != iEntries.end(); it++) { entry_type *entry = (*it); if (--(entry->iCounter) <= 0) { if (!entry->iRecurring) expiredFound = 1; if (entry->iRecurring) entry->iCounter = entry->iOrigCounter; // use local observer if it exists, otherwise use global observer OsclTimerObserver *obs = (entry->iObserver ? entry->iObserver : iObserver); if (obs) { iInCallback = true; obs->TimeoutOccurred(entry->iTimerID, entry->iParam); iInCallback = false; } } } } (이하 생략)

그럼 타임아웃 값은 어디에 설정되어 있는 걸까?

그것은 다음에 있다.

./nodes/pvprotocolenginenode/protocol_common/src/pvmf_protocol_engine_node_common.cpp
uint32 PVMFProtocolEngineNodeTimer::getDefaultTimeout(const uint32 aTimerID) { switch (aTimerID) { case SERVER_RESPONSE_TIMER_ID: return DEFAULT_MAX_SERVER_RESPONSE_DURATION_IN_SEC; case SERVER_INACTIVITY_TIMER_ID: return DEFAULT_MAX_SERVER_INACTIVITY_DURATION_IN_SEC; case SERVER_KEEPALIVE_TIMER_ID: return DEFAULT_KEEPALIVE_TIMEOUT_IN_SEC; case SERVER_RESPONSE_TIMER_ID_FOR_STOPEOS_LOGGING: return DEFAULT_MAX_SERVER_RESPONSE_DURATION_IN_SEC_FOR_STOPEOS_LOGGING; case WALL_CLOCK_TIMER_ID: return DEFAULT_WALLCLOCK_TIMEOUT_IN_SEC; case BUFFER_STATUS_TIMER_ID: return DEFAULT_BUFFER_STATUS_CLOCK_TIMEOUT_IN_SEC; default: break; } return 0; }  

./nodes/pvprotocolenginenode/config/linux/pvmf_protocolengine_node_tunables.h

// macros for timer

#define DEFAULT_MAX_SERVER_INACTIVITY_DURATION_IN_SEC 60

#define DEFAULT_MAX_SERVER_RESPONSE_DURATION_IN_SEC 60

#define DEFAULT_KEEPALIVE_TIMEOUT_IN_SEC 60

#define DEFAULT_MAX_SERVER_RESPONSE_DURATION_IN_SEC_FOR_STOPEOS_LOGGING 4

#define DEFAULT_WALLCLOCK_TIMEOUT_IN_SEC 2

#define DEFAULT_BUFFER_STATUS_CLOCK_TIMEOUT_IN_SEC 2

#define DEFAULT_TIMER_VECTOR_RESERVE_NUMBER 8

#define PVPROTOCOLENGINENODE_TIMER_FREQUENCY 1 // 1 means 1 sec, 1000 means 1msec