okseby/Quake-III-Arena
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Move rate limiting / queued packet sending logic from Com_Frame() to sv_main.c

Browse source
This commit is contained in:
Thilo Schulz 2011-07-15 16:51:54 +00:00
parent 58a5d3d383
commit e6ba500164
6 changed files with 121 additions and 87 deletions
Download patch file Download diff file Expand all files Collapse all files

81
code/server/sv_main.c
View file

@ -50,6 +50,7 @@ cvar_t *sv_mapChecksum;
cvar_t *sv_serverid;
cvar_t *sv_minRate;
cvar_t *sv_maxRate;
cvar_t *sv_dlRate;
cvar_t *sv_minPing;
cvar_t *sv_maxPing;
cvar_t *sv_gametype;
@ -1205,3 +1206,83 @@ int SV_RateMsec(client_t *client)
else
return rateMsec - rate;
}
/*
====================
SV_SendQueuedPackets
Send download messages and queued packets in the time that we're idle, i.e.
not computing a server frame or sending client snapshots.
Return the time in msec until we expect to be called next
====================
*/
int SV_SendQueuedPackets()
{
int numBlocks;
int dlStart, deltaT, delayT;
static int dlNextRound = 0;
int timeVal = INT_MAX;
// Send out fragmented packets now that we're idle
delayT = SV_SendQueuedMessages();
if(delayT >= 0)
timeVal = delayT;
if(sv_dlRate->integer)
{
// Rate limiting. This is very imprecise for high
// download rates due to millisecond timedelta resolution
dlStart = Sys_Milliseconds();
deltaT = dlNextRound - dlStart;
if(deltaT > 0)
{
if(deltaT < timeVal)
timeVal = deltaT + 1;
}
else
{
numBlocks = SV_SendDownloadMessages();
if(numBlocks)
{
// There are active downloads
deltaT = Sys_Milliseconds() - dlStart;
delayT = 1000 * numBlocks * MAX_DOWNLOAD_BLKSIZE;
delayT /= sv_dlRate->integer * 1024;
if(delayT <= deltaT + 1)
{
// Sending the last round of download messages
// took too long for given rate, don't wait for
// next round, but always enforce a 1ms delay
// between DL message rounds so we don't hog
// all of the bandwidth. This will result in an
// effective maximum rate of 1MB/s per user, but the
// low download window size limits this anyways.
if(timeVal > 2)
timeVal = 2;
dlNextRound = dlStart + deltaT + 1;
}
else
{
dlNextRound = dlStart + delayT;
delayT -= deltaT;
if(delayT < timeVal)
timeVal = delayT;
}
}
}
}
else
{
if(SV_SendDownloadMessages())
timeVal = 0;
}
return timeVal;
}