ReHLDS 

ReHLDS is a result of reverse engineering of original HLDS (build 6152/6153) using DWARF debug info embedded into linux version of HLDS, engine_i486.so

Along with reverse engineering, a lot of defects and (potential) bugs were found and fixed

You can try playing on one of many servers that are using ReHLDS: Game Tracker

• Provide more stable (than official) version of Half-Life dedicated server with extended API for mods and plugins
• Performance optimizations (use of SSE for vector math for example) is another goal for the future

ReHLDS is fully compatible with the official pre-anniversary edition of HLDS (engine version <= 8684) downloaded by steamcmd. All you have to do is to download rehlds binaries and replace original swds.dll/engine_i486.so. For windows you can also copy a swds.pdb file with a debug information.

Warning! ReHLDS is not compatible with an old 5xxx or below platforms downloaded by hldsupdatetool.

app_set_config 90 mod cstrike
app_update 90 -beta steam_legacy validate

• Release builds
• Dev builds

ReHLDS binaries require SSE, SSE2 and SSE3 instruction sets to run and can benefit from SSE4.1 and SSE4.2

Warning! ReHLDS is not binary compatible with original hlds since it's compiled with compilers other than ones used for original hlds. This means that plugins that do binary code analysis (Orpheu for example) probably will not work with rehlds.

• rescount // Prints the total count of precached resources in the server console
• reslist // Separately prints the details of the precached resources for sounds, models, decals, generic and events in server console. Useful for managing resources and dealing with the goldsource precache limits.
• rcon_adduser <ipaddress/CIDR> // Add a new IP address or CIDR range to RCON user list (This command adds a new IP address to the RCON user list. The specified IP or CIDR range is granted privileged access to server console. Without any Rcon users, access is allowed to anyone with a valid password)
• rcon_deluser {removeAll} // Remove an IP address or CIDR range from RCON user list
• rcon_users // List all IP addresses and CIDR ranges in RCON user list

There are several software requirements for building rehlds:

Visual Studio 2015 (C++14 standard) and later

cmake >= 3.10
GCC >= 4.9.2 (Optional)
ICC >= 15.0.1 20141023 (Optional)
LLVM (Clang) >= 6.0 (Optional)

Use Visual Studio to build, open msvc/ReHLDS.sln and just select from the solution configurations list Release Swds or Debug Swds

• Optional options using build.sh --compiler=[gcc] --jobs=[N] -D[option]=[ON or OFF] (without square brackets)

-c=|--compiler=[icc|gcc|clang]  - Select preferred C/C++ compiler to build
-j=|--jobs=[N]                  - Specifies the number of jobs (commands) to run simultaneously (For faster building)

Definitions (-D)
DEBUG                           - Enables debugging mode
USE_STATIC_LIBSTDC              - Enables static linking library libstdc++

• ICC

  ./build.sh --compiler=intel

• LLVM (Clang)

  ./build.sh --compiler=clang

• GCC

  ./build.sh --compiler=gcc

Click to expand

Just install it on your game server and report problems you faced. Merge requests are also welcome :)