In theory they can disable UDP server-side, once the game gets no response from bnet it will fallback to TCP. Also your game may not be using UDP due to firewall / port forwarding / broken NAT or any number of other issues that affect UDP connectivity.

Darkn3ss

United States717 Posts

May 26 2010 22:06 GMT

#107

On May 27 2010 06:36 R1CH wrote:
In theory they can disable UDP server-side, once the game gets no response from bnet it will fallback to TCP. Also your game may not be using UDP due to firewall / port forwarding / broken NAT or any number of other issues that affect UDP connectivity.

*sighs how did you learn all of this?!?! "/

I feel like a caveman... TT

Gary13579

United States6 Posts

May 26 2010 22:20 GMT

#108

Heya R1CH, been a while since I've seen you at BH!

I noticed the lag (especially in combat) since UDP was added, but wasn't sure if I could blame Blizzard or the fact that I use Wine. It's really killed my micro completely... Would you mind posting the source, or the patches that you use, so that I can make a native Linux/Wine version of it?

Actually, idea.. could I simply block UDP via my router (disable UPnP), or via iptables, and have SC2 revert to TCP? This is a lot more tempting, and avoid Warden bans.

I appreciate your work, glad to know you're still around n "playing" Blizzard games

weeeee

Australia71 Posts

May 26 2010 22:49 GMT

#109

just blocking udp packets to blizzard servers would work as well. But hopefully when sc2 is released udp will be fixed and udp would be better than tcp.

Gary13579

United States6 Posts

May 26 2010 22:57 GMT

#110

Alright, did some testing using some of the awesome tools available, and have come up with the following... UDP is already disabled?

gary@snuggles:~/tools$ lsof -i | grep wineserve 05/26/10 4:46 PM
wineserve 32613 gary 66u IPv4 2423507 TCP snuggles.local:56092->12.129.206.131:1119 (ESTABLISHED)
wineserve 32613 gary 267u IPv4 2423723 TCP snuggles.local:49529->12.130.10.130:1119 (ESTABLISHED)

There are a few other things listed, but this can be blamed on wine for bunching all connections under the same proc, I ruled all UDP connections out to be torrents.

gary@snuggles:~/tools$ netstat -cn | grep ":1119" 05/26/10 4:53 PM
tcp 0 8 192.168.1.13:49529 12.130.10.130:1119 ESTABLISHED
tcp 0 0 192.168.1.13:56092 12.129.206.131:1119 ESTABLISHED

This is with UPnP on and no iptables rules.

gary@snuggles:~/tools$ sudo iptables --list 05/26/10 4:54 PM
[sudo] password for gary:
Chain INPUT (policy ACCEPT)
target prot opt source destination

Chain FORWARD (policy ACCEPT)
target prot opt source destination

Chain OUTPUT (policy ACCEPT)
target prot opt source destination

I can't think of any other solution than UDP was disabled on the server.

To test the theory, I built a metric ton of mutas and tried microing them vs a friend. Normally, 10 mutas vs a few marines, with me moving in/out in waves of shots to harass his buildings, the lag would be terrible (up to 5 seconds), and I would lose half my mutas.
The tests showed no lag at all today (with 70 mutas!), maybe 100ms maximum, which can be blamed on my low FPS.

I'd appreciate your opinion, R1CH

UmmTheHobo

United States650 Posts

May 26 2010 23:06 GMT

#111

You are a god R1CH, Blizzard is missing out

NuKedUFirst

Canada3139 Posts

May 26 2010 23:36 GMT

#112

http://www.microsoft.com/downloads/details.aspx?familyid=9b2da534-3e03-4391-8a4d-074b9f2bc1bf&displaylang=en <-- C++ 2008 run times if anyone isn't sure how to use google.

goswser

United States3548 Posts

May 26 2010 23:40 GMT

#113

I used this and it has worked well. However a strange thing happened to me earlier, not sure if its a bug with the program. I was in a game (hadn't turned it on), and it began to lag and disconnect me. So I minimized the screen and turned it on, then maximized sc2 again. When I maximized I had assumed to have ~30 seconds before I was disconnected, but I was already disconnected, and the disconnect screen was blank, but it didn't say I had been dropped for about a minute. Does this tool disconnect you from the game if you turn it on mid-game? If so, this could be a major problem in tournaments, where disconnects mean a re-game.

Gary13579

United States6 Posts

May 26 2010 23:44 GMT

#114

On May 27 2010 08:40 Newguy wrote:
I used this and it has worked well. However a strange thing happened to me earlier, not sure if its a bug with the program. I was in a game (hadn't turned it on), and it began to lag and disconnect me. So I minimized the screen and turned it on, then maximized sc2 again. When I maximized I had assumed to have ~30 seconds before I was disconnected, but I was already disconnected, and the disconnect screen was blank, but it didn't say I had been dropped for about a minute. Does this tool disconnect you from the game if you turn it on mid-game? If so, this could be a major problem in tournaments, where disconnects mean a re-game.

It's very very doubtful that this is related to this hack. However, it appears this hack isn't needed anymore, and is kinda useless now.

NuKedUFirst

Canada3139 Posts

May 27 2010 00:00 GMT

#115

On May 27 2010 08:44 Gary13579 wrote:

Show nested quote +

It's very very doubtful that this is related to this hack. However, it appears this hack isn't needed anymore, and is kinda useless now.

I disagree, I was in a game 30 mins ago and it lagged like crazy, I forgot to turn the app on, I went and did so and wasn't lagging at all, I decided to ask my opponent if he was lagging and he said he was a lot.
Could have just been bad connection but I think this still helps.

Gary13579

United States6 Posts

May 27 2010 00:06 GMT

#116

I'd be quite shocked if UDP was still being used, even after all my tests suggest otherwise. I decided to hop into a ranked game (all my games before were custom), and sure enough, still using TCP.

If one of you Windows users could check something for me, I'd appreciate it. Hop into a game without using this hack, hit Start -> Run, type cmd<enter>, then type: netstat -n | find "1119". copy/paste the output here.

DrakanSilva

Chile932 Posts

May 27 2010 01:44 GMT

#117

will that help me not getting stuck at "PLAYER FOUND!"

battle.lag "where your games lag, granted!"

Mohdoo

United States15729 Posts

May 27 2010 01:46 GMT

#118

Amazing work, R1ch. You do a lot of good for the community

This should really be sticky'ed in the SC2 forum, IMO. Just for the sake of more people seeing it.

neohero9

United States595 Posts

May 27 2010 01:53 GMT

#119

Will I get similar results if I go into my router settings and block UDP from the port SC2 uses?

Excalibur_Z

United States12240 Posts

May 27 2010 02:04 GMT

#120

On May 27 2010 09:06 Gary13579 wrote:
I'd be quite shocked if UDP was still being used, even after all my tests suggest otherwise. I decided to hop into a ranked game (all my games before were custom), and sure enough, still using TCP.

If one of you Windows users could check something for me, I'd appreciate it. Hop into a game without using this hack, hit Start -> Run, type cmd<enter>, then type: netstat -n | find "1119". copy/paste the output here.

I think you're right. UDP appears to be disabled server-side. I'm not running R1CH's program, and going by netstat output, I don't see any UDP activity at all, only TCP.