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Darwin-Streaming-Server/APIModules/QTSSAccessLogModule/QTSSAccessLogModule.cpp
Darren VanBuren 849723c9cf Add even more of the source 
This should be about everything needed to build so far?
2017-03-07 17:14:16 -08:00

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/*
*
* @APPLE_LICENSE_HEADER_START@
*
* Copyright (c) 1999-2008 Apple Inc. All Rights Reserved.
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this
* file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @APPLE_LICENSE_HEADER_END@
*
*/
/*
File: QTSSAccessLogModule.cpp
Contains: Implementation of an RTP access log module.
*/
#include "QTSSAccessLogModule.h"
#include "QTSSModuleUtils.h"
#include "QTSSRollingLog.h"
#include "OSMutex.h"
#include "MyAssert.h"
#include "OSMemory.h"
#include <time.h>
#include "StringParser.h"
#include "StringFormatter.h"
#include "StringTranslator.h"
#include "StrPtrLen.h"
#include "UserAgentParser.h"
#include "Task.h"
#define TESTUNIXTIME 0
class QTSSAccessLog;
class LogCheckTask;
// STATIC DATA
// Default values for preferences
static Bool16 sDefaultLogEnabled = true;
static char* sDefaultLogName = "StreamingServer";
static char* sDefaultLogDir = NULL;
static QTSS_PrefsObject sServerPrefs = NULL;
static UInt32 sDefaultMaxLogBytes = 10240000;
static UInt32 sDefaultRollInterval = 7;
static char* sVoidField = "-";
static Bool16 sStartedUp = false;
static Bool16 sDefaultLogTimeInGMT = true;
static QTSS_AttributeID sLoggedAuthorizationAttrID = qtssIllegalAttrID;
// Current values for preferences
static Bool16 sLogEnabled = true;
static UInt32 sMaxLogBytes = 51200000;
static UInt32 sRollInterval = 7;
static Bool16 sLogTimeInGMT = true;
static OSMutex* sLogMutex = NULL;//Log module isn't reentrant
static QTSSAccessLog* sAccessLog = NULL;
static QTSS_ServerObject sServer = NULL;
static QTSS_ModulePrefsObject sPrefs = NULL;
static LogCheckTask* sLogCheckTask = NULL;
// This header conforms to the W3C "Extended Log File Format".
// (See "http://www.w3.org/TR/WD-logfile.html" for details.)
// The final remark filed of the log header tells us if the logged times are in GMT or in system local time.
static char* sLogHeader = "#Software: %s\n"
"#Version: %s\n" //%s == version
"#Date: %s\n" //%s == date/time
"#Remark: all time values are in %s.\n" //%s == qtss_localtime or GMT
"#Fields: c-ip date time c-dns cs-uri-stem c-starttime x-duration c-rate c-status c-playerid"
" c-playerversion c-playerlanguage cs(User-Agent) c-os"
" c-osversion c-cpu filelength filesize avgbandwidth protocol transport audiocodec videocodec"
" sc-bytes cs-bytes c-bytes s-pkts-sent c-pkts-received c-pkts-lost-client c-buffercount"
" c-totalbuffertime c-quality s-ip s-dns s-totalclients s-cpu-util cs-uri-query c-username sc(Realm) \n";
//**************************************************
// CLASS DECLARATIONS
//**************************************************
class LogCheckTask : public Task
{
public:
LogCheckTask() : Task() {this->SetTaskName("LogCheckTask"); this->Signal(Task::kStartEvent); }
virtual ~LogCheckTask() {}
private:
virtual SInt64 Run();
};
class QTSSAccessLog : public QTSSRollingLog
{
public:
QTSSAccessLog() : QTSSRollingLog() { this->SetTaskName("QTSSAccessLog"); }
virtual ~QTSSAccessLog() {}
virtual char* GetLogName() { return QTSSModuleUtils::GetStringAttribute(sPrefs, "request_logfile_name", sDefaultLogName); }
virtual char* GetLogDir() { return QTSSModuleUtils::GetStringAttribute(sPrefs, "request_logfile_dir", sDefaultLogDir); }
virtual UInt32 GetRollIntervalInDays() { return sRollInterval; }
virtual UInt32 GetMaxLogBytes() { return sMaxLogBytes; }
virtual time_t WriteLogHeader(FILE *inFile);
};
// FUNCTION PROTOTYPES
static QTSS_Error QTSSAccessLogModuleDispatch(QTSS_Role inRole, QTSS_RoleParamPtr inParamBlock);
static QTSS_Error Register(QTSS_Register_Params* inParams);
static QTSS_Error Initialize(QTSS_Initialize_Params* inParams);
static QTSS_Error RereadPrefs();
static QTSS_Error Shutdown();
static QTSS_Error PostProcess(QTSS_StandardRTSP_Params* inParams);
static QTSS_Error ClientSessionClosing(QTSS_ClientSessionClosing_Params* inParams);
static QTSS_Error LogRequest( QTSS_ClientSessionObject inClientSession,
QTSS_RTSPSessionObject inRTSPSession,QTSS_CliSesClosingReason *inCloseReasonPtr);
static void CheckAccessLogState(Bool16 forceEnabled);
static QTSS_Error RollAccessLog(QTSS_ServiceFunctionArgsPtr inArgs);
static void ReplaceSpaces(StrPtrLen *sourcePtr, StrPtrLen *destPtr, char *replaceStr);
static QTSS_Error StateChange(QTSS_StateChange_Params* stateChangeParams);
static void WriteStartupMessage();
static void WriteShutdownMessage();
// FUNCTION IMPLEMENTATIONS
QTSS_Error QTSSAccessLogModule_Main(void* inPrivateArgs)
{
return _stublibrary_main(inPrivateArgs, QTSSAccessLogModuleDispatch);
}
QTSS_Error QTSSAccessLogModuleDispatch(QTSS_Role inRole, QTSS_RoleParamPtr inParamBlock)
{
switch (inRole)
{
case QTSS_Register_Role:
return Register(&inParamBlock->regParams);
case QTSS_StateChange_Role:
return StateChange(&inParamBlock->stateChangeParams);
case QTSS_Initialize_Role:
return Initialize(&inParamBlock->initParams);
case QTSS_RereadPrefs_Role:
return RereadPrefs();
case QTSS_RTSPPostProcessor_Role:
return PostProcess(&inParamBlock->rtspPostProcessorParams);
case QTSS_ClientSessionClosing_Role:
return ClientSessionClosing(&inParamBlock->clientSessionClosingParams);
case QTSS_Shutdown_Role:
return Shutdown();
}
return QTSS_NoErr;
}
QTSS_Error Register(QTSS_Register_Params* inParams)
{
sLogMutex = NEW OSMutex();
// Do role & service setup
(void)QTSS_AddRole(QTSS_Initialize_Role);
(void)QTSS_AddRole(QTSS_RTSPPostProcessor_Role);
(void)QTSS_AddRole(QTSS_ClientSessionClosing_Role);
(void)QTSS_AddRole(QTSS_RereadPrefs_Role);
(void)QTSS_AddRole(QTSS_Shutdown_Role);
(void)QTSS_AddRole(QTSS_StateChange_Role);
(void)QTSS_AddService("RollAccessLog", &RollAccessLog);
// Tell the server our name!
static char* sModuleName = "QTSSAccessLogModule";
::strcpy(inParams->outModuleName, sModuleName);
static char* sLoggedAuthorizationName = "QTSSAccessLogModuleLoggedAuthorization";
(void)QTSS_AddStaticAttribute(qtssClientSessionObjectType, sLoggedAuthorizationName, NULL, qtssAttrDataTypeUInt32);
(void)QTSS_IDForAttr(qtssClientSessionObjectType, sLoggedAuthorizationName, &sLoggedAuthorizationAttrID);
return QTSS_NoErr;
}
QTSS_Error Initialize(QTSS_Initialize_Params* inParams)
{
QTSSModuleUtils::Initialize(inParams->inMessages, inParams->inServer, inParams->inErrorLogStream);
sServer = inParams->inServer;
sPrefs = QTSSModuleUtils::GetModulePrefsObject(inParams->inModule);
sServerPrefs = inParams->inPrefs;
RereadPrefs();
WriteStartupMessage();
sLogCheckTask = NEW LogCheckTask();
return QTSS_NoErr;
}
QTSS_Error RereadPrefs()
{
delete [] sDefaultLogDir;
(void)QTSS_GetValueAsString(sServerPrefs, qtssPrefsErrorLogDir, 0, &sDefaultLogDir);
QTSSModuleUtils::GetAttribute(sPrefs, "request_logging", qtssAttrDataTypeBool16,
&sLogEnabled, &sDefaultLogEnabled, sizeof(sLogEnabled));
QTSSModuleUtils::GetAttribute(sPrefs, "request_logfile_size", qtssAttrDataTypeUInt32,
&sMaxLogBytes, &sDefaultMaxLogBytes, sizeof(sMaxLogBytes));
QTSSModuleUtils::GetAttribute(sPrefs, "request_logfile_interval", qtssAttrDataTypeUInt32,
&sRollInterval, &sDefaultRollInterval, sizeof(sRollInterval));
QTSSModuleUtils::GetAttribute(sPrefs, "request_logtime_in_gmt", qtssAttrDataTypeBool16,
&sLogTimeInGMT, &sDefaultLogTimeInGMT, sizeof(sLogTimeInGMT));
CheckAccessLogState(false);
return QTSS_NoErr;
}
QTSS_Error Shutdown()
{
WriteShutdownMessage();
if (sLogCheckTask != NULL)
{
//sLogCheckTask is a task object, so don't delete it directly
// instead we signal it to kill itself.
sLogCheckTask->Signal(Task::kKillEvent);
sLogCheckTask = NULL;
}
return QTSS_NoErr;
}
QTSS_Error StateChange(QTSS_StateChange_Params* stateChangeParams)
{
if (stateChangeParams->inNewState == qtssIdleState)
WriteShutdownMessage();
else if (stateChangeParams->inNewState == qtssRunningState)
WriteStartupMessage();
return QTSS_NoErr;
}
QTSS_Error PostProcess(QTSS_StandardRTSP_Params* inParams)
{
static UInt32 sZero = 0;
UInt32* theStatus = NULL;
UInt32 theLen = 0;
QTSS_Error theErr = QTSS_GetValuePtr(inParams->inRTSPRequest, qtssRTSPReqRealStatusCode, 0, (void**)&theStatus, &theLen);
if (theErr != QTSS_NoErr)
return theErr;
QTSS_CliSesClosingReason theReason = qtssCliSesCloseClientTeardown;
if ((*theStatus == 401) || (*theStatus == 403))
{
LogRequest(inParams->inClientSession, NULL, &theReason);
(void)QTSS_SetValue(inParams->inClientSession, sLoggedAuthorizationAttrID, 0, theStatus, sizeof(*theStatus));
}
else
(void)QTSS_SetValue(inParams->inClientSession, sLoggedAuthorizationAttrID, 0, &sZero, sizeof(sZero));
return theErr;
}
#if TESTUNIXTIME
void TestUnixTime(time_t theTime, char *ioDateBuffer);
void TestUnixTime(time_t theTime, char *ioDateBuffer)
{
Assert(NULL != ioDateBuffer);
//use ansi routines for getting the date.
time_t calendarTime = theTime;
Assert(-1 != calendarTime);
if (-1 == calendarTime)
return;
struct tm timeResult;
struct tm* theLocalTime = qtss_localtime(&calendarTime, &timeResult);
Assert(NULL != theLocalTime);
if (NULL == theLocalTime)
return;
//date needs to look like this for common log format: 29/Sep/1998:11:34:54 -0700
//this wonderful ANSI routine just does it for you.
//qtss_strftime(ioDateBuffer, kMaxDateBufferSize, "%d/%b/%Y:%H:%M:%S", theLocalTime);
qtss_strftime(ioDateBuffer,QTSSRollingLog::kMaxDateBufferSizeInBytes, "%Y-%m-%d %H:%M:%S", theLocalTime);
return;
}
#endif
QTSS_Error ClientSessionClosing(QTSS_ClientSessionClosing_Params* inParams)
{
return LogRequest(inParams->inClientSession, NULL, &inParams->inReason);
}
void ReplaceSpaces(StrPtrLen *sourcePtr, StrPtrLen *destPtr, char *replaceStr)
{
if ( (NULL != destPtr) && (NULL != destPtr->Ptr) && (0 < destPtr->Len) ) destPtr->Ptr[0] = 0;
do
{
if ( (NULL == sourcePtr)
|| (NULL == destPtr)
|| (NULL == sourcePtr->Ptr)
|| (NULL == destPtr->Ptr)
|| (0 == sourcePtr->Len)
|| (0 == destPtr->Len)
) break;
if (0 == sourcePtr->Ptr[0])
{
destPtr->Len = 0;
break;
}
const StrPtrLen replaceValue(replaceStr);
StringFormatter formattedString(destPtr->Ptr, destPtr->Len);
StringParser sourceStringParser(sourcePtr);
StrPtrLen preStopChars;
do
{ sourceStringParser.ConsumeUntil(&preStopChars, StringParser::sEOLWhitespaceMask);
if (preStopChars.Len > 0)
{ formattedString.Put(preStopChars);// copy the string up to the space or eol. it will be truncated if there's not enough room.
if ( sourceStringParser.Expect(' ') && (formattedString.GetSpaceLeft() > replaceValue.Len) )
{ formattedString.Put(replaceValue.Ptr, replaceValue.Len);
}
else //no space character or no room for replacement
{ break;
}
}
} while ( preStopChars.Len != 0);
destPtr->Set(formattedString.GetBufPtr(), formattedString.GetBytesWritten() );
} while (false);
}
QTSS_Error LogRequest( QTSS_ClientSessionObject inClientSession,
QTSS_RTSPSessionObject inRTSPSession, QTSS_CliSesClosingReason *inCloseReasonPtr)
{
static StrPtrLen sUnknownStr(sVoidField);
static StrPtrLen sTCPStr("TCP");
static StrPtrLen sUDPStr("UDP");
//Fetch the URL, user agent, movielength & movie bytes to log out of the RTP session
enum {
eTempLogItemSize = 256, // must be same or larger than others
eURLSize = 256,
eUserAgentSize = 256,
ePlayerIDSize = 32,
ePlayerVersionSize = 32,
ePlayerLangSize = 32,
ePlayerOSSize = 32,
ePlayerOSVersSize = 32,
ePlayerCPUSize = 32
};
char tempLogItemBuf[eTempLogItemSize] = { 0 };
StrPtrLen tempLogStr(tempLogItemBuf, eTempLogItemSize -1);
//
// Check to see if this session is closing because authorization failed. If that's
// the case, we've logged that already, let's not log it twice
UInt32 theLen = 0;
UInt32* authorizationFailed = NULL;
(void)QTSS_GetValuePtr(inClientSession, sLoggedAuthorizationAttrID, 0, (void**)&authorizationFailed, &theLen);
if ((authorizationFailed != NULL) && (*authorizationFailed > 0))
return QTSS_NoErr;
///inClientSession should never be NULL
//inRTSPRequest may be NULL if this is a timeout
OSMutexLocker locker(sLogMutex);
CheckAccessLogState(false);
if (sAccessLog == NULL)
return QTSS_NoErr;
//if logging is on, then log the request... first construct a timestamp
char theDateBuffer[QTSSRollingLog::kMaxDateBufferSizeInBytes];
Bool16 result = QTSSRollingLog::FormatDate(theDateBuffer, sLogTimeInGMT);
//for now, just ignore the error.
if (!result)
theDateBuffer[0] = '\0';
theLen = sizeof(QTSS_RTSPSessionObject);
QTSS_RTSPSessionObject theRTSPSession = inRTSPSession;
if (theRTSPSession == NULL)
(void)QTSS_GetValue(inClientSession, qtssCliSesLastRTSPSession, 0, (void*) &theRTSPSession, &theLen);
// Get lots of neat info to log from the various dictionaries
// Each attribute must be copied out to ensure that it is NULL terminated.
// To ensure NULL termination, just memset the buffers to 0, and make sure that
// the last byte of each array is untouched.
Float32* packetLossPercent = NULL;
Float64* movieDuration = NULL;
UInt64* movieSizeInBytes = NULL;
UInt32* movieAverageBitRatePtr = 0;
UInt32 clientPacketsReceived = 0;
UInt32 clientPacketsLost = 0;
StrPtrLen* theTransportType = &sUnknownStr;
SInt64* theCreateTime = NULL;
SInt64* thePlayTime = NULL;
UInt32 startPlayTimeInSecs = 0;
char localIPAddrBuf[20] = { 0 };
StrPtrLen localIPAddr(localIPAddrBuf, 19);
char localDNSBuf[70] = { 0 };
StrPtrLen localDNS(localDNSBuf, 69);
char remoteDNSBuf[70] = { 0 };
StrPtrLen remoteDNS(remoteDNSBuf, 69);
char remoteAddrBuf[20] = { 0 };
StrPtrLen remoteAddr(remoteAddrBuf, 19);
char playerIDBuf[ePlayerIDSize] = { 0 };
StrPtrLen playerID(playerIDBuf, ePlayerIDSize -1) ;
// First, get networking info from the RTSP session
(void)QTSS_GetValue(inClientSession, qtssCliRTSPSessLocalAddrStr, 0, localIPAddr.Ptr, &localIPAddr.Len);
(void)QTSS_GetValue(inClientSession, qtssCliRTSPSessLocalDNS, 0, localDNS.Ptr, &localDNS.Len);
(void)QTSS_GetValue(inClientSession, qtssCliSesHostName, 0, remoteDNS.Ptr, &remoteDNS.Len);
(void)QTSS_GetValue(inClientSession, qtssCliRTSPSessRemoteAddrStr, 0, remoteAddr.Ptr, &remoteAddr.Len);
(void)QTSS_GetValue(inClientSession, qtssCliRTSPSessRemoteAddrStr, 0, playerID.Ptr, &playerID.Len);
UInt32* rtpBytesSent = NULL;
UInt32* rtcpBytesRecv = NULL;
UInt32* rtpPacketsSent = NULL;
UInt32 clientBytesRecv = 0;
// Second, get networking info from the Client's session.
// (Including the stats for incoming RTCP packets.)
char urlBuf[eURLSize] = { 0 };
StrPtrLen url(urlBuf, eURLSize -1);
(void)QTSS_GetValue(inClientSession, qtssCliSesPresentationURL, 0, url.Ptr, &url.Len);
(void)QTSS_GetValuePtr(inClientSession, qtssCliSesPacketLossPercent, 0, (void**)&packetLossPercent, &theLen);
(void)QTSS_GetValuePtr(inClientSession, qtssCliSesMovieDurationInSecs, 0, (void**)&movieDuration, &theLen);
(void)QTSS_GetValuePtr(inClientSession, qtssCliSesMovieSizeInBytes, 0, (void**)&movieSizeInBytes, &theLen);
(void)QTSS_GetValuePtr(inClientSession, qtssCliSesMovieAverageBitRate, 0, (void**)&movieAverageBitRatePtr, &theLen);
(void)QTSS_GetValuePtr(inClientSession, qtssCliSesCreateTimeInMsec, 0, (void**)&theCreateTime, &theLen);
(void)QTSS_GetValuePtr(inClientSession, qtssCliSesFirstPlayTimeInMsec, 0, (void**)&thePlayTime, &theLen);
(void)QTSS_GetValuePtr(inClientSession, qtssCliSesRTPBytesSent, 0, (void**)&rtpBytesSent, &theLen);
(void)QTSS_GetValuePtr(inClientSession, qtssCliSesRTPPacketsSent, 0, (void**)&rtpPacketsSent, &theLen);
(void)QTSS_GetValuePtr(inClientSession, qtssCliSesRTCPBytesRecv, 0, (void**)&rtcpBytesRecv, &theLen);
if (theCreateTime != NULL && thePlayTime != NULL)
startPlayTimeInSecs = (UInt32)(((*theCreateTime - *thePlayTime)/1000)+0.5);
// We need a value of 'c-bytes' to report as a log entry. This is supposed to be the total number
// of bytes the client has received during the session. Unfortunately, the QT client does not give
// us this number. We will use the following heuristic formula to estimate the number of bytes the
// client has received during the session:
//
// client-bytes-received = bytes-sent * (100.0 - percent-packet-lost) / 100.0
//
// The 'percent-packet-lost' value has been calculated internally by QTSS based on the RTCP packets
// sent to the server from the client. If those values are accurate then the above formula will not
// be exactly correct but it will be nearly correct.
clientBytesRecv = (UInt32)((*rtpBytesSent * (100.0 - *packetLossPercent))/100.0);
tempLogStr.Ptr[0] = 0; tempLogStr.Len = eUserAgentSize;
(void)QTSS_GetValue(inClientSession, qtssCliSesFirstUserAgent, 0, tempLogStr.Ptr, &tempLogStr.Len);
char userAgentBuf[eUserAgentSize] = { 0 };
StrPtrLen userAgent(userAgentBuf, eUserAgentSize -1);
ReplaceSpaces(&tempLogStr, &userAgent, "%20");
UserAgentParser userAgentParser(&userAgent);
// StrPtrLen* playerID = userAgentParser.GetUserID() ;
StrPtrLen* playerVersion = userAgentParser.GetUserVersion() ;
StrPtrLen* playerLang = userAgentParser.GetUserLanguage() ;
StrPtrLen* playerOS = userAgentParser.GetrUserOS() ;
StrPtrLen* playerOSVers = userAgentParser.GetUserOSVersion() ;
StrPtrLen* playerCPU = userAgentParser.GetUserCPU() ;
// char playerIDBuf[ePlayerIDSize] = {};
char playerVersionBuf[ePlayerVersionSize] = { 0 };
char playerLangBuf[ePlayerLangSize] = { 0 };
char playerOSBuf[ePlayerOSSize] = { 0 };
char playerOSVersBuf[ePlayerOSVersSize] = { 0 };
char playerCPUBuf[ePlayerCPUSize] = { 0 };
UInt32 size;
// (ePlayerIDSize < playerID->Len ) ? size = ePlayerIDSize -1 : size = playerID->Len;
// if (playerID->Ptr != NULL) memcpy (playerIDBuf, playerID->Ptr, size);
(ePlayerVersionSize < playerVersion->Len ) ? size = ePlayerVersionSize -1 : size = playerVersion->Len;
if (playerVersion->Ptr != NULL) memcpy (playerVersionBuf, playerVersion->Ptr, size);
(ePlayerLangSize < playerLang->Len ) ? size = ePlayerLangSize -1 : size = playerLang->Len;
if (playerLang->Ptr != NULL) memcpy (playerLangBuf, playerLang->Ptr, size);
(ePlayerOSSize < playerOS->Len ) ? size = ePlayerOSSize -1 : size = playerOS->Len;
if (playerOS->Ptr != NULL) memcpy (playerOSBuf, playerOS->Ptr, size);
(ePlayerOSVersSize < playerOSVers->Len ) ? size = ePlayerOSVersSize -1 : size = playerOSVers->Len;
if (playerOSVers->Ptr != NULL) memcpy (playerOSVersBuf, playerOSVers->Ptr, size);
(ePlayerCPUSize < playerCPU->Len ) ? size = ePlayerCPUSize -1 : size = playerCPU->Len;
if (playerCPU->Ptr != NULL) memcpy (playerCPUBuf, playerCPU->Ptr, size);
// clientPacketsReceived, clientPacketsLost, videoPayloadName and audioPayloadName
// are all stored on a per-stream basis, so let's iterate through all the streams,
// finding this information
char videoPayloadNameBuf[32] = { 0 };
StrPtrLen videoPayloadName(videoPayloadNameBuf, 31);
char audioPayloadNameBuf[32] = { 0 };
StrPtrLen audioPayloadName(audioPayloadNameBuf, 31);
UInt32 qualityLevel = 0;
UInt32 clientBufferTime = 0;
UInt32 theStreamIndex = 0;
Bool16* isTCPPtr = NULL;
QTSS_RTPStreamObject theRTPStreamObject = NULL;
for ( UInt32 theStreamObjectLen = sizeof(theRTPStreamObject);
QTSS_GetValue(inClientSession, qtssCliSesStreamObjects, theStreamIndex, (void*)&theRTPStreamObject, &theStreamObjectLen) == QTSS_NoErr;
theStreamIndex++, theStreamObjectLen = sizeof(theRTPStreamObject))
{
UInt32* streamPacketsReceived = NULL;
UInt32* streamPacketsLost = NULL;
(void)QTSS_GetValuePtr(theRTPStreamObject, qtssRTPStrTotPacketsRecv, 0, (void**)&streamPacketsReceived, &theLen);
(void)QTSS_GetValuePtr(theRTPStreamObject, qtssRTPStrTotalLostPackets, 0, (void**)&streamPacketsLost, &theLen);
// Add up packets received and packets lost to come up with a session wide total
if (streamPacketsReceived != NULL)
clientPacketsReceived += *streamPacketsReceived;
if (streamPacketsLost != NULL)
clientPacketsLost += *streamPacketsLost;
// Identify the video and audio codec types
QTSS_RTPPayloadType* thePayloadType = NULL;
(void)QTSS_GetValuePtr(theRTPStreamObject, qtssRTPStrPayloadType, 0, (void**)&thePayloadType, &theLen);
if (thePayloadType != NULL)
{
if (*thePayloadType == qtssVideoPayloadType)
(void)QTSS_GetValue(theRTPStreamObject, qtssRTPStrPayloadName, 0, videoPayloadName.Ptr, &videoPayloadName.Len);
else if (*thePayloadType == qtssAudioPayloadType)
(void)QTSS_GetValue(theRTPStreamObject, qtssRTPStrPayloadName, 0, audioPayloadName.Ptr, &audioPayloadName.Len);
}
// If any one of the streams is being delivered over UDP instead of TCP,
// report in the log that the transport type for this session was UDP.
if (isTCPPtr == NULL)
{
(void)QTSS_GetValuePtr(theRTPStreamObject, qtssRTPStrIsTCP, 0, (void**)&isTCPPtr, &theLen);
if (isTCPPtr != NULL)
{ if (*isTCPPtr == false)
theTransportType = &sUDPStr;
else
theTransportType = &sTCPStr;
}
}
Float32* clientBufferTimePtr = NULL;
(void)QTSS_GetValuePtr(theRTPStreamObject, qtssRTPStrBufferDelayInSecs, 0, (void**)&clientBufferTimePtr, &theLen);
if ( (clientBufferTimePtr != NULL) && (*clientBufferTimePtr != 0) )
{ if ( *clientBufferTimePtr > clientBufferTime)
clientBufferTime = (UInt32) (*clientBufferTimePtr + .5); // round up to full seconds
}
}
// Add the client buffer time to our client start latency (in whole seconds).
startPlayTimeInSecs += clientBufferTime;
if (*rtpPacketsSent == 0) // no packets sent
qualityLevel = 0; // no quality
else
{
if ( (clientPacketsReceived == 0) && (clientPacketsLost == 0) ) // no info from client
qualityLevel = 100; //so assume 100
else
{
float qualityPercent = (float) clientPacketsReceived / (float) (clientPacketsReceived + clientPacketsLost);
qualityPercent += (float).005; // round up
qualityLevel = (UInt32) ( (float) 100.0 * qualityPercent); // average of sum of packet counts for all streams
}
}
//we may not have an RTSP request. Assume that the status code is 504 timeout, if there is an RTSP
//request, though, we can find out what the real status code of the response is
static UInt32 sTimeoutCode = 504;
UInt32* theStatusCode = &sTimeoutCode;
theLen = sizeof(UInt32);
(void)QTSS_GetValuePtr(inClientSession, qtssCliRTSPReqRealStatusCode, 0, (void **) &theStatusCode, &theLen);
// qtss_printf("qtssCliRTSPReqRealStatusCode = %"_U32BITARG_" \n", *theStatusCode);
if (inCloseReasonPtr) do
{
if (*theStatusCode < 300) // it was a succesful RTSP request but...
{
if (*inCloseReasonPtr == qtssCliSesCloseTimeout) // there was a timeout
{
*theStatusCode = sTimeoutCode;
// qtss_printf(" log timeout ");
break;
}
if (*inCloseReasonPtr == qtssCliSesCloseClientTeardown) // there was a teardown
{
static QTSS_CliSesClosingReason sReason = qtssCliSesCloseClientTeardown;
QTSS_CliSesClosingReason* theReasonPtr = &sReason;
theLen = sizeof(QTSS_CliSesTeardownReason);
(void)QTSS_GetValuePtr(inClientSession, qtssCliTeardownReason, 0, (void **) &theReasonPtr, &theLen);
// qtss_printf("qtssCliTeardownReason = %"_U32BITARG_" \n", *theReasonPtr);
if (*theReasonPtr == qtssCliSesTearDownClientRequest) // the client asked for a tear down
{
// qtss_printf(" client requests teardown ");
break;
}
if (*theReasonPtr == qtssCliSesTearDownUnsupportedMedia) // An error occured while streaming the file.
{
*theStatusCode = 415;
// qtss_printf(" log UnsupportedMedia ");
break;
}
if (*theReasonPtr == qtssCliSesTearDownBroadcastEnded) // a broadcaster stopped broadcasting
{
*theStatusCode = 452;
// qtss_printf(" log broadcast removed ");
break;
}
*theStatusCode = 500; // some unknown reason for cancelling the connection
}
// qtss_printf("return status ");
// just use the qtssCliRTSPReqRealStatusCode for the reason
}
} while (false);
// qtss_printf(" = %"_U32BITARG_" \n", *theStatusCode);
// Find out what time it is
SInt64 curTime = QTSS_Milliseconds();
UInt32 numCurClients = 0;
theLen = sizeof(numCurClients);
(void)QTSS_GetValue(sServer, qtssRTPSvrCurConn, 0, &numCurClients, &theLen);
/*
IMPORTANT!!!!
Some values such as cpu, #conns, need to be grabbed as the session starts, not when the teardown happened (I think)
*/
#if TESTUNIXTIME
char thetestDateBuffer[QTSSRollingLog::kMaxDateBufferSizeInBytes];
TestUnixTime(QTSS_MilliSecsTo1970Secs(*theCreateTime), thetestDateBuffer);
qtss_printf("%s\n",thetestDateBuffer);
#endif
float zeroFloat = 0;
UInt64 zeroUInt64 = 0;
Float32 fcpuUtilized = 0;
UInt32 cpuUtilized = 0; // percent
theLen = sizeof(fcpuUtilized);
(void)QTSS_GetValue(sServer, qtssSvrCPULoadPercent, 0, &fcpuUtilized, &theLen);
cpuUtilized = (UInt32)fcpuUtilized;
char lastUserName[eTempLogItemSize] ={ 0 };
StrPtrLen lastUserNameStr(lastUserName,eTempLogItemSize);
char lastURLRealm[eTempLogItemSize] ={ 0 };
StrPtrLen lastURLRealmStr(lastURLRealm,eTempLogItemSize);
//qtss_printf("logging of saved params are in dictionary \n");
tempLogStr.Ptr[0] = 0; tempLogStr.Len = eTempLogItemSize;
(void)QTSS_GetValue(inClientSession, qtssCliRTSPSesUserName, 0, tempLogStr.Ptr, &tempLogStr.Len);
ReplaceSpaces(&tempLogStr, &lastUserNameStr, "%20");
//qtss_printf("qtssRTSPSesLastUserName dictionary item = %s len = %"_S32BITARG_"\n",lastUserNameStr.Ptr,lastUserNameStr.Len);
tempLogStr.Ptr[0] = 0; tempLogStr.Len = eTempLogItemSize;
(void)QTSS_GetValue(inClientSession, qtssCliRTSPSesURLRealm, 0, tempLogStr.Ptr, &tempLogStr.Len);
ReplaceSpaces(&tempLogStr, &lastURLRealmStr, "%20");
//qtss_printf("qtssRTSPSesLastURLRealm dictionary item = %s len = %"_S32BITARG_"\n",lastURLRealmStr.Ptr,lastURLRealmStr.Len);
char respMsgBuffer[1024] = { 0 };
StrPtrLen theRespMsg;
(void)QTSS_GetValuePtr(inClientSession, qtssCliRTSPReqRespMsg, 0, (void**)&theRespMsg.Ptr, &theRespMsg.Len);
StrPtrLen respMsgEncoded(respMsgBuffer, 1024 -1);
SInt32 theErr = StringTranslator::EncodeURL(theRespMsg.Ptr, theRespMsg.Len, respMsgEncoded.Ptr, respMsgEncoded.Len);
if (theErr <= 0)
respMsgEncoded.Ptr[0] = '\0';
else
{
respMsgEncoded.Len = theErr;
respMsgEncoded.Ptr[respMsgEncoded.Len] = '\0';
}
//cs-uri-query
char urlQryBuf[eURLSize] = { 0 };
StrPtrLen urlQry(urlQryBuf, eURLSize -1);
(void)QTSS_GetValue(inClientSession, qtssCliSesReqQueryString, 0, urlQry.Ptr, &urlQry.Len);
char tempLogBuffer[1024];
char logBuffer[2048];
// compatible fields (no respMsgEncoded field)
::memset(logBuffer, 0, 2048);
qtss_sprintf(tempLogBuffer, "%s ", (remoteAddr.Ptr[0] == '\0') ? sVoidField : remoteAddr.Ptr); //c-ip*
::strcpy(logBuffer, tempLogBuffer);
qtss_sprintf(tempLogBuffer, "%s ", (theDateBuffer[0] == '\0') ? sVoidField : theDateBuffer); //date* time*
::strcat(logBuffer, tempLogBuffer);
qtss_sprintf(tempLogBuffer, "%s ", (remoteDNS.Ptr[0] == '\0') ? sVoidField : remoteDNS.Ptr); //c-dns
::strcat(logBuffer, tempLogBuffer);
qtss_sprintf(tempLogBuffer, "%s ", (url.Ptr[0] == '\0') ? sVoidField : url.Ptr); //cs-uri-stem*
::strcat(logBuffer, tempLogBuffer);
qtss_sprintf(tempLogBuffer, "%"_U32BITARG_" ", startPlayTimeInSecs); //c-starttime
::strcat(logBuffer, tempLogBuffer);
qtss_sprintf(tempLogBuffer, "%"_U32BITARG_" ", theCreateTime == NULL ? (UInt32) 0 : (UInt32) (QTSS_MilliSecsTo1970Secs(curTime)
- QTSS_MilliSecsTo1970Secs(*theCreateTime))); //x-duration*
::strcat(logBuffer, tempLogBuffer);
qtss_sprintf(tempLogBuffer, "%"_S32BITARG_" ", (UInt32) 1); //c-rate
::strcat(logBuffer, tempLogBuffer);
qtss_sprintf(tempLogBuffer, "%"_S32BITARG_" ", *theStatusCode); //c-status*
::strcat(logBuffer, tempLogBuffer);
qtss_sprintf(tempLogBuffer, "%s ", (playerIDBuf[0] == '\0') ? sVoidField : playerIDBuf); //c-playerid*
::strcat(logBuffer, tempLogBuffer);
qtss_sprintf(tempLogBuffer, "%s ", (playerVersionBuf[0] == '\0') ? sVoidField : playerVersionBuf); //c-playerversion
::strcat(logBuffer, tempLogBuffer);
qtss_sprintf(tempLogBuffer, "%s ", (playerLangBuf[0] == '\0') ? sVoidField : playerLangBuf); //c-playerlanguage*
::strcat(logBuffer, tempLogBuffer);
qtss_sprintf(tempLogBuffer, "%s ", (userAgent.Ptr[0] == '\0') ? sVoidField : userAgent.Ptr); //cs(User-Agent)
::strcat(logBuffer, tempLogBuffer);
qtss_sprintf(tempLogBuffer, "%s ", (playerOSBuf[0] == '\0') ? sVoidField : playerOSBuf); //c-os*
::strcat(logBuffer, tempLogBuffer);
qtss_sprintf(tempLogBuffer, "%s ", (playerOSVersBuf[0] == '\0') ? sVoidField : playerOSVersBuf); //c-osversion
::strcat(logBuffer, tempLogBuffer);
qtss_sprintf(tempLogBuffer, "%s ", (playerCPUBuf[0] == '\0') ? sVoidField : playerCPUBuf); //c-cpu*
::strcat(logBuffer, tempLogBuffer);
qtss_sprintf(tempLogBuffer, "%0.0f ", movieDuration == NULL ? zeroFloat : *movieDuration); //filelength in secs*
::strcat(logBuffer, tempLogBuffer);
qtss_sprintf(tempLogBuffer, "%"_64BITARG_"d ", movieSizeInBytes == NULL ? zeroUInt64 : *movieSizeInBytes); //filesize in bytes*
::strcat(logBuffer, tempLogBuffer);
qtss_sprintf(tempLogBuffer, "%"_U32BITARG_" ", movieAverageBitRatePtr == NULL ? (UInt32) 0 : *movieAverageBitRatePtr); //avgbandwidth in bits per second
::strcat(logBuffer, tempLogBuffer);
qtss_sprintf(tempLogBuffer, "%s ", "RTP"); //protocol
::strcat(logBuffer, tempLogBuffer);
qtss_sprintf(tempLogBuffer, "%s ", (theTransportType->Ptr[0] == '\0') ? sVoidField : theTransportType->Ptr); //transport
::strcat(logBuffer, tempLogBuffer);
qtss_sprintf(tempLogBuffer, "%s ", (audioPayloadName.Ptr[0] == '\0') ? sVoidField : audioPayloadName.Ptr); //audiocodec*
::strcat(logBuffer, tempLogBuffer);
qtss_sprintf(tempLogBuffer, "%s ", (videoPayloadName.Ptr[0] == '\0') ? sVoidField : videoPayloadName.Ptr); //videocodec*
::strcat(logBuffer, tempLogBuffer);
qtss_sprintf(tempLogBuffer, "%"_U32BITARG_" ",rtpBytesSent == NULL ? (UInt32) 0 : *rtpBytesSent); //sc-bytes*
::strcat(logBuffer, tempLogBuffer);
qtss_sprintf(tempLogBuffer, "%"_U32BITARG_" ",rtcpBytesRecv == NULL ? (UInt32) 0 : *rtcpBytesRecv); //cs-bytes*
::strcat(logBuffer, tempLogBuffer);
qtss_sprintf(tempLogBuffer, "%"_U32BITARG_" ", clientBytesRecv); //c-bytes
::strcat(logBuffer, tempLogBuffer);
qtss_sprintf(tempLogBuffer, "%"_U32BITARG_" ", rtpPacketsSent == NULL ? (UInt32)0 : *rtpPacketsSent); //s-pkts-sent*
::strcat(logBuffer, tempLogBuffer);
qtss_sprintf(tempLogBuffer, "%"_U32BITARG_" ", clientPacketsReceived); //c-pkts-recieved
::strcat(logBuffer, tempLogBuffer);
qtss_sprintf(tempLogBuffer, "%"_U32BITARG_" ", clientPacketsLost); //c-pkts-lost-client*
::strcat(logBuffer, tempLogBuffer);
qtss_sprintf(tempLogBuffer, "%"_U32BITARG_" ", (UInt32)1); //c-buffercount
::strcat(logBuffer, tempLogBuffer);
qtss_sprintf(tempLogBuffer, "%"_U32BITARG_" ", clientBufferTime); //c-totalbuffertime*
::strcat(logBuffer, tempLogBuffer);
qtss_sprintf(tempLogBuffer, "%"_U32BITARG_" ", qualityLevel); //c-quality
::strcat(logBuffer, tempLogBuffer);
qtss_sprintf(tempLogBuffer, "%s ", (localIPAddr.Ptr[0] == '\0') ? sVoidField : localIPAddr.Ptr); //s-ip
::strcat(logBuffer, tempLogBuffer);
qtss_sprintf(tempLogBuffer, "%s ", (localDNS.Ptr[0] == '\0') ? sVoidField : localDNS.Ptr); //s-dns
::strcat(logBuffer, tempLogBuffer);
qtss_sprintf(tempLogBuffer, "%"_U32BITARG_" ", numCurClients); //s-totalclients
::strcat(logBuffer, tempLogBuffer);
qtss_sprintf(tempLogBuffer, "%"_U32BITARG_" ", cpuUtilized); //s-cpu-util
::strcat(logBuffer, tempLogBuffer);
qtss_sprintf(tempLogBuffer, "%s ", (urlQry.Ptr[0] == '\0') ? sVoidField : urlQry.Ptr); //cs-uri-query
::strcat(logBuffer, tempLogBuffer);
qtss_sprintf(tempLogBuffer, "%s ", (lastUserName[0] == '\0') ? sVoidField : lastUserName); //c-username
::strcat(logBuffer, tempLogBuffer);
qtss_sprintf(tempLogBuffer, "%s ", (lastURLRealm[0] == '\0') ? sVoidField : lastURLRealm); //sc(Realm)
::strcat(logBuffer, tempLogBuffer);
::strcat(logBuffer, "\n");
Assert(::strlen(logBuffer) < 2048);
//finally, write the log message
sAccessLog->WriteToLog(logBuffer, kAllowLogToRoll);
return QTSS_NoErr;
}
void CheckAccessLogState(Bool16 forceEnabled)
{
//this function makes sure the logging state is in synch with the preferences.
//extern variable declared in QTSSPreferences.h
//check error log.
if ((NULL == sAccessLog) && (forceEnabled || sLogEnabled))
{
sAccessLog = NEW QTSSAccessLog();
sAccessLog->EnableLog();
}
if ((NULL != sAccessLog) && ((!forceEnabled) && (!sLogEnabled)))
{
sAccessLog->Delete(); //sAccessLog is a task object, so don't delete it directly
sAccessLog = NULL;
}
}
// SERVICE ROUTINES
QTSS_Error RollAccessLog(QTSS_ServiceFunctionArgsPtr /*inArgs*/)
{
const Bool16 kForceEnable = true;
OSMutexLocker locker(sLogMutex);
//calling CheckLogState is a kludge to allow logs
//to be rolled while logging is disabled.
CheckAccessLogState(kForceEnable);
if (sAccessLog != NULL )
sAccessLog->RollLog();
CheckAccessLogState(!kForceEnable);
return QTSS_NoErr;
}
// This task runs once an hour to check and see if the log needs to roll.
SInt64 LogCheckTask::Run()
{
static Bool16 firstTime = true;
// don't check the log for rolling the first time we run.
if (firstTime)
{
firstTime = false;
}
else
{
Bool16 success = false;
if (sAccessLog != NULL && sAccessLog->IsLogEnabled())
success = sAccessLog->CheckRollLog();
Assert(success);
}
// execute this task again in one hour.
return (60*60*1000);
}
time_t QTSSAccessLog::WriteLogHeader(FILE *inFile)
{
time_t calendarTime = QTSSRollingLog::WriteLogHeader(inFile);
//format a date for the startup time
char theDateBuffer[QTSSRollingLog::kMaxDateBufferSizeInBytes] = { 0 };
Bool16 result = QTSSRollingLog::FormatDate(theDateBuffer, false);
char tempBuffer[1024] = { 0 };
if (result)
{
StrPtrLen serverName;
(void)QTSS_GetValuePtr(sServer, qtssSvrServerName, 0, (void**)&serverName.Ptr, &serverName.Len);
StrPtrLen serverVersion;
(void)QTSS_GetValuePtr(sServer, qtssSvrServerVersion, 0, (void**)&serverVersion.Ptr, &serverVersion.Len);
qtss_sprintf(tempBuffer, sLogHeader, serverName.Ptr , serverVersion.Ptr, theDateBuffer, sLogTimeInGMT ? "GMT" : "local time");
this->WriteToLog(tempBuffer, !kAllowLogToRoll);
}
return calendarTime;
}
void WriteStartupMessage()
{
if (sStartedUp)
return;
sStartedUp = true;
//format a date for the startup time
char theDateBuffer[QTSSRollingLog::kMaxDateBufferSizeInBytes];
Bool16 result = QTSSRollingLog::FormatDate(theDateBuffer, false);
char tempBuffer[1024];
if (result)
qtss_sprintf(tempBuffer, "#Remark: Streaming beginning STARTUP %s\n", theDateBuffer);
// log startup message to error log as well.
if ((result) && (sAccessLog != NULL))
sAccessLog->WriteToLog(tempBuffer, kAllowLogToRoll);
}
void WriteShutdownMessage()
{
if (!sStartedUp)
return;
sStartedUp = false;
//log shutdown message
//format a date for the shutdown time
char theDateBuffer[QTSSRollingLog::kMaxDateBufferSizeInBytes];
Bool16 result = QTSSRollingLog::FormatDate(theDateBuffer, false);
char tempBuffer[1024];
if (result)
qtss_sprintf(tempBuffer, "#Remark: Streaming beginning SHUTDOWN %s\n", theDateBuffer);
if ( result && sAccessLog != NULL )
sAccessLog->WriteToLog(tempBuffer, kAllowLogToRoll);
}
/*
Log file format recognized by Lariat Stats
#Fields: c-ip date time c-dns cs-uri-stem c-starttime x-duration c-rate c-status c-playerid c-playerversion c-playerlanguage cs(User-Agent) cs(Referer) c-hostexe c-hostexever c-os c-osversion c-cpu filelength filesize avgbandwidth protocol transport audiocodec videocodec channelURL sc-bytes c-bytes s-pkts-sent c-pkts-received c-pkts-lost-client c-pkts-lost-net c-pkts-lost-cont-net c-resendreqs c-pkts-recovered-ECC c-pkts-recovered-resent c-buffercount c-totalbuffertime c-quality s-ip s-dns s-totalclients s-cpu-util
e.g. 157.56.87.123 1998-01-19 22:53:59 foo.bar.com rtsp://ddelval1/56k_5min_1.mov 1 16 1 200 - 5.1.51.119 0409 - - dshow.exe 5.1.51.119 Windows_NT 4.0.0.1381 Pentium 78 505349 11000 RTSP UDP MPEG_Layer-3 MPEG-4_Video_High_Speed_Compressor_(MT) - 188387 188387 281 281 0 0 0 0 0 0 1 5 100 157.56.87.123 foo.bar.com 1 0
Notes:
In the table below, W3C/Custom - refers to whether the fields are supported by the W3C file format or if it is a Custom field
All fields are space-delimited
Fields not used by Lariat Stats should be present in the log file in some form, preferably a "-"
Log files should be named according to the format: Filename.YYMMDDNNN.log, where Filename is specific to the server type, YYMMDD is the date of creation, and NNN is a 3 digit number used when there are multiple logs from the same date (e.g. 000, 001, 002, etc.)
Field Name Value W3C/Custom Example value Used by Stats
c-ip IP address of client W3C 157.100.200.300 y
date Date of the access W3C 11-16-98 y
time Time of the access (HH:MM:SS) W3C 15:30:30 y
c-dns Resolved dns of the client W3C fredj.ford.com n
cs-uri-stem Requested file W3C rtsp://server/sample.asf y
c-starttime Start time W3C 0 [in seconds, no fractions] n
x-duration Duration of the session (s) W3C 31 [in seconds, no fractions] y
c-rate Rate file was played by client Custom 1 [1= play, -5=rewind, +5=fforward] n
c-status http return code Custom 200 [mapped to http/rtsp status codes; 200 is success, 404 file not found...] y
c-playerid unique player ID Custom [a GUID value] y
c-playerversion player version Custom 3.0.0.1212
c-playerlanguage player language Custom EN [two letter country code] y
cs(User-Agent) user agent W3C Mozilla/2.0+(compatible;+MSIE+3.0;+Windows 95) - this is a sample user-agent string n
cs(Referer) referring URL W3C http://www.gte.com n
c-hostexe host program Custom iexplore.exe [iexplore.exe, netscape.exe, dshow.exe, nsplay.exe, vb.exe, etc<74>] n
c-hostexever version Custom 4.70.1215 y
c-os os Custom Windows [Windows, Windows NT, Unix-[flavor], Mac-[flavor]] y
c-osversion os version Custom 4.0.0.1212 n
c-cpu cpu type Custom Pentium [486, Pentium, Alpha %d, Mac?, Unix?] y
filelength file length (s) Custom 60 [in seconds, no fractions] y
filesize file size (bytes) Custom 86000 [ie: 86kbytes] y
avgbandwidth Custom 24300 [ie: 24.3kbps] n
protocol Custom RTSP [rtsp, http] n
transport Custom UDP [udp, tcp, or mc] n
audiocodec Custom MPEG-Layer-3 y
videocodec Custom MPEG4 y
channelURL Custom http://server/channel.nsc n
sc-bytes bytes sent by server W3C 30000 [30k bytes sent from the server to the client] y
cs-bytes bytes received by client W3C 28000 [bytes received] n
s-pkts-sent packets sent Custom 55 y
c-pkts-recieved packets received Custom 50 n
c-pkts-lost-client packets lost Custom 5 y
c-pkts-lost-net Custom 2 [renamed from erasures; refers to packets lost at the network layer] n
c-pkts-lost-cont-net Custom 2 [continuous packets lost at the network layer] n
c-resendreqs packets resent Custom 5 y
c-pkts-recovered-ECC packets resent successfully Custom 1 [this refers to packets recovered in the client layer] y
c-pkts-recovered-resent Custom 5 [this refers to packets recovered via udp resend] n
c-buffercount Custom 1 n
c-totalbuffertime seconds buffered Custom 20 [in seconds] y
c-quality quality measurement Custom 89 [in percent] n
s-ip server ip W3C 155.12.1.234 [entered by the unicast server] n
s-dns server dns W3C foo.company.com n
s-totalclients total connections at time of access Custom 201 [total clients] n
s-cpu-util cpu utilization at time of access Custom 40 [in percent] n
cs-uri-query W3C language=EN&rate=1&CPU=486&protocol=RTSP&transport=UDP&quality=89&avgbandwidth=24300 n
*/
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