Hey all, I have a question for anyone with any libMySQL experience.
I finally got a working version of my MUD running overnight last night, and I decided to have a look through the log this afternoon, and I found this:
Quote:[14/03/2005 17:02:53] WARNING: Failed to insert user to the database! Error: Lost connection to MySQL server during query
That caused the user to get disconnected, and they reconnected a few seconds later, and managed to register fine (I.e. the insert worked fine the second time).
Does anyone know what cuased this? Was it just a timeout? It looks like it was about 14 hours since the database was last accessed before that call, so that seems likely.
Secondly, does anyone know how to prevent this (Other than just trying again if it fails)?
Here's the relevant source code:
bool CDatabase::InsertUser(CProfile* pUser)
{
char szBuff[4096];
// Get user ID //
pUser->m_dwUserID = GetNextUserID();
if(!pUser->m_dwUserID)
return false;
// Allocate user for internal list //
CProfile* pInternalUser = new CProfile;
if(!pInternalUser)
{
Thread_SetError("Out of Memory!");
return false;
}
memcpy(pInternalUser,pUser,sizeof(CProfile));
// Compose query //
sprintf(szBuff,"INSERT INTO `users` (`userid`, `username`, "
"`password`, `sex`, `class`, `showname`, `desc`, `email`, "
"`website`, `hp`, `max_hp`, `mp`, `max_mp`, `stamina`, `max_stamina`, "
"`firstip`, `firstlogin`, `lastip`, `lastlogin`, `lastloginlen`, "
"`onlinetime`, `cash`, `balance`, `roomid`, `status`, `statustext`, "
"`respawntime`, `permissions`, `kickcount`, `bancount`, `deathcount`, "
"`logincount`, `experience`, `next_xp`, `level`, `avatarurl`, "
"`avatartime`, `idletimeout`, `floodreduce`, `floodmax`, `maxbuffer`, "
"`strength`, `intelligence`, `accuracy`, `avoid`, `melee`, `archery`, "
"`cast`, `pick_lock`, `spot_trap`, `disarm_trap` "
") VALUES "
"('%lu', '%s', '%s', '%lu', '%lu','%s', '', '', '', '%lu', '%lu', '%lu', '%lu', "
"'%lu', '%lu', '%lu', '%lu', '%lu','%lu', '0', '0', '0', '0', '0', '0', '', '0', "
"'0', '0', '0','0', '1', '%lu', '%lu', '1', '', '0', '%lu', '%lu', '%lu', '%lu', "
"'%lu', '%lu', '%lu', '%lu', '%lu', '%lu', '%lu', '%lu', '%lu', '%lu');",
pUser->m_dwUserID,pUser->m_szUsername,pUser->m_szPassword,(int)pUser->m_bySex,
pUser->m_dwClass,pUser->m_szShowname,pUser->m_dwHP,pUser->m_dwMaxHP,pUser->m_dwMP,pUser->m_dwMaxMP,
pUser->m_dwStamina,pUser->m_dwMaxStamina,pUser->m_dwFirstIP,pUser->m_dwFirstLogin,
pUser->m_dwFirstIP,pUser->m_dwFirstLogin,pUser->m_dwExperience,pUser->m_dwNextExperience,
pUser->m_dwIdleTimeout,pUser->m_dwFloodReduce,pUser->m_dwFloodMax,pUser->m_dwMaxBufferLen,
pUser->m_dwStrength,pUser->m_dwIntelligence,pUser->m_dwAccuracy,pUser->m_dwAvoid,
pUser->m_dwMelee,pUser->m_dwArchery,pUser->m_dwCast,pUser->m_dwPickLock,pUser->m_dwSpotTrap,
pUser->m_dwDisarmTrap);
// Do the query //
if(mysql_query(m_pSQL,szBuff) != 0)
{
Thread_SetError(mysql_error(m_pSQL));
return false;
}
// Add to internal user list and return //
EnterCriticalSection(&m_cs);
m_mapUsers[pInternalUser->m_szUsername] = pInternalUser;
LeaveCriticalSection(&m_cs);
return true;
}
You can probably just ignore the vast INSERT statement :P
And before anyone says anything, Yes, I know I should be using prepared statements. But the version of MySQL that I have doesn't support them, and I can't get PHP working with the newer version.
