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Jul 09, 2010 Posted in Gaming, Left 4 Dead 2, Windows 7 Tagged Gaming, Left 4 Dead 2, Steam, Windows 7 22 Comments Post navigation Previous Post Timekeeping in Ubuntu Virtual Machines (VMware) Next Post Ubuntu Server 10.4 Lucid – Setting Up eXtplorer. Jul 16, 2013 In folder where you installed Left 4 Dead 2 you will find L4D2 Control Center.exe use it to change your Nickname. Commands When you want to start server type. Left 4 Dead 2. All Discussions Screenshots Artwork Broadcasts Videos Workshop News Guides Reviews. Before going into a singleplayer game type 'svconsistency 0' without the quotes into the developer console. This also works for private listening servers.
- 1Basic Usage
- 2Whitelist File Format
A pure server is one that forces all clients on the server to use content that matches what is on the server. This, along with sv_consistency, prevents cheating by modifying game content, e.g. increasing the size of models or volume of footsteps, or making wall materials transparent.
Basic Usage
To use pure server mode on a server, set the sv_pure console variable to 1 or 2. Then, on the next map change, the server will ensure that the content (materials, models, and sounds) on client machines matches what is specified.
By default, the server will kick clients whose custom content varies from that the server is using. By setting sv_pure_kick_clients to 0, the server will only display a warning about clients using this kind of 'impure' custom content. The server can force the client to use content provided by the game, and will never kick players who have only modded default content, like custom skins or models.
In Source MP games (HL2:DM, DoD:S, CS:S, and TF2), sv_pure must be enabled on the server's command-line, before the game loads its VPK files.
Mode 1 Details
In this mode, the list of content that the server enforces is specified in the file pure_server_whitelist.txt, which is contained in the server's hl2 directory. Server administrators can edit this file to change which content clients are allowed to modify. For example, the server could specify in this file that clients are allowed to modify sounds, but not materials or models.
Mode 2 Details
In this mode, all game content is forced to be default. This is identical to running in mode 1 and with everything in the whitelist file set to from_steam.
sv_consistency and Mode -1
Source MP games no longer support sv_consistency. It has been merged with sv_pure. sv_pure 0 is the equivalent of sv_pure 0 and sv_consistency 1 in older games. sv_pure -1 is the equivalent of sv_pure 0 and sv_consistency 0.
Whitelist File Format
The whitelist file is the pure_server_whitelist.txt file found in /hl2/. This whitelist is used in CS:GO, Source 2009 and before Source engine games.
The whitelist file has moved to the game's /cfg/ directory in Source MP games.
The pure_server_whitelist.txt file specifies attributes for groups of files. Each line specifies one file or a group of files and the attributes for those files. Here is an example line:
The first part ('materials..') specifies the files. In this case, it is specifying all files under the materials directory, recursively. The second part ('from_steam') specifies the attributes to apply to those files. In this case, it is saying that all of those files must come from Steam. So if clients have custom content in their materials directories, that content will not be used, and the content from their Steam caches will be used instead.
There are three ways to specify a file group:
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- By filename
materialsmodelspropscs_assaultwirepipe.vtf
- All files in a directory
materialsmodelspropscs_assault*.*
- To do: Would *.vtf work too?
- All files in a directory and its subdirectories
materialsmodels..
And there are three ways to specify an attribute:
from_steam
- Forces clients to load this set of files from the Steam cache even if they have custom content on disk. Replaced by
trusted_source
in Source MP games. allow_from_disk
- Clients can load the specified files from disk. They also don't have to match the content on the server. So these files are totally unprotected. Replaced by
any
in Source MP games. allow_from_disk+check_crc
- Clients can load the specified files from disk, but their on-disk files must match the files on the server. Replaced by VPK signing keys in trusted_keys.txt in Source MP games.
Examples
Default Attributes
![Sv_consistency Sv_consistency](/uploads/1/2/9/3/129396770/758200461.webp)
Left 4 Dead 2 Sv_consistency 0 2
If sv_pure is set to 1, the default attribute for all files is allow_from_disk. So if you had an empty pure_server_whitelist.txt file and you set sv_pure to 1, there would be no difference from sv_pure 0.
Note:The default pure_server_whitelist.txt file that ships with the Source Engine does in fact have settings, so even if you don't modify the default pure_server_whitelist.txt, sv_pure 1 will still enforce most content.
Left 4 Dead 2 Sv_consistency 00
Default pure_server_whitelist.txt File
The default pure_server_whitelist.txt file that ships with the game looks like this. If you want to begin making changes to the whitelist file, you can start with this.
For SteamPipe Source MP games, from_steam; allow_from_disk; and check_crc were deprecated. They were replaced with trusted_source; any; and the ability to validate signed VPKs based on their public keys.
The new default is:
Stacking
The attributes for files are applied in top-down order in the pure_server_whitelist.txt file. This way, you can apply one attribute to a large set of files and a different attribute to a subset of those files. For example, if you wanted to force all models to come from Steam except the models under modelsMyMod, you could add these lines to your pure_server_whitelist.txt file:
Advanced Usage
If you set sv_pure to 2, then the server will not even load the pure_server_whitelist.txt file. Instead, it will apply the from_steam attribute to all materials, models, and sounds. This can be useful for competitive matches where one team is hosting the game. The team who is not hosting the game can look in their console at round start and see which sv_pure mode the server is using. If the server is using sv_pure 2, then the non-hosting team can know that the players on the hosting team are not using custom content.
Bugs
Source SDK 2007 apparently has problems when checking directories having files as well as directories on the Linux platform (Windows behaves correctly).
For example doing something like this would lead to sv_pure error when the MyModDecals contain files and some subdirectories:
You should avoid this and put the files into their subdirectories and check them separately.
Performance
There are two places where sv_pure will affect performance.
- When the server loads its first map with sv_pure set to 1, it has to calculate file CRCs for all files marked as
allow_from_disk+check_crc
. - Generally, this set of files should be set to the minimal set of files. If, for example, the pure_server_whitelist.txt file had a line like
materials.. allow_from_disk+check_crc
, the server would pause for a very long time the first time it loaded a map because it would calculate CRCs for every single material file in the game. - Setting sv_pure to 2 will not affect server performance because the server does not need to calculate CRCs.
- When a client loads a map and the value of sv_pure has changed, the client will reload any content necessary to make sure it is obeying the pure server's rules.
- So if the client had many materials, models, and sounds that were customized on a previous server and then connected to a pure server, the client would have to reload all those materials, models, and sounds.
- Generally, the performance hit on the client is negligible because the client will only flush out a few files when connecting to a pure server.
Left 4 Dead 2 Sv_consistency 0 1
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