The size of A2S_INFO is a trade off to reduce the amount of bandwidth amplification it provides (without going to a full challenge/response and the associated overhead of two UDP packets with tiny data payloads).
- Alfre -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Kris Sum Sent: Friday, February 25, 2005 11:18 AM To: [email protected] Subject: RE: [SPAM] RE: [hlds_apps] Server query protocol Steve, there are server cvars to limit the number of queries a second your server replies to. Use them :) As for the server query protocol changes, I'm a bit miffed. If the motivation for the change is to help avoid the query mechanism become a DDOS tool then leaving the A2S_INFO query without protection seems silly. Also, changing the A2S_INFO query to "0xFFFFFFFFFFFFFFF 'T' "Source Engine Query" '\0'" also seems silly, can't we have a smaller string (or even better, a new character instead of T) to reduce the packet data size on client machines that query lots of servers (i.e. for server browsers)? Kris. ----Original Message---- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Steve Tilson Sent: 25 February 2005 17:08 To: [email protected] Subject: Re: [SPAM] RE: [hlds_apps] Server query protocol > And we all very much appreciate your efforts. > > I am forming up a open source project for .NET rcon classes/tools. > I think the more complicated and safer protocol is preferred. > We can do the work to implement the protocol if the dedicated servers > will also deploy supporting this protocol. > > One comment about HLSW... > We frequently find ourselves firewall blocking IP addresses that use > HLSW. > The tool was fine when it was an admin tool. > When the tool began competing with the all-seeing-eye for a game > launcher things got out of control. > > The issue with HLSW is it can be used as a dos tool itself by setting > the number of servers per second very high, having the target server > as the only server in the list, and setting it to auto-update. > The result is a constant stream of status queries that effectively > renders the server unplayable. > > Stiil a great tool but it would be really great if you could govern > the queries against single servers to once per 30 seconds or so. > > Regards, > Steve Tilson > > _______________________________________________ hlds_apps mailing list [email protected] http://list.valvesoftware.com/mailman/listinfo/hlds_apps _______________________________________________ hlds_apps mailing list [email protected] http://list.valvesoftware.com/mailman/listinfo/hlds_apps
