NFS LAN Server Launcher

A very simple console launcher for the server.dll found in Underground 2 and Most Wanted.

Usage

• Copy server.dll and server.cfg from the game next to NFSLAN binary (NOTE: servers are different between MW and UG2!)

• Configure the server in server.cfg

• Launch NFSLAN like this: nfslan YourServerName where YourServerName should be self-explanatory

Server configuration

Currently a lot of settings are left undocumented.

However, the most important one would be the port, which you can simply define like this: PORT=9900

%%bind simply binds the address to the available local range, while inputting the IP directly makes it use directly.

There are also %%dns, %%host (for host names) and a few other keys found within 0x10029AF0 of MW's server.dll (including if statements, includes, variables, etc.)

ADDR - sets the listen address - this is what is sent to clients as the "slave" address, so disregard what the config comment says - it most certainly communicates with this address

MADDR & MPORT - probably sets master server address & port

RADDR & RPORT - probably sets the redirector address & port

LADDR & LPORT - probably sets the lobby address & port

AADDR & APORT - probably sets the account server address & port

LOGCONNECTIONS - when set to 1, it enables connection logs to the console from the redirector

log.level - sets the verbosity of logging. 4 by default, goes up to 10 (TODO - check this)

log.categoryMask - self explanatory

PERIP - unknown

RXDEL - unknown

RXLEN - unknown

scheduler.type - is set to select by default. Not sure if there are any other options available

scheduler.maxFd - unknown

scheduler.maxEvents - unknown

There's a lot more that I've missed. This server is pretty large, actually, with enough code to probably run the entire Online mode of the games again.

Patches

This launcher also automatically patches the server to allow online gameplay.

This also requires some client-side patches.

• SKU - this tag needs to return the external IP of the client in order to determine an online connection

• Client needs to host a UDP server to respond to a local challenge to determine if it's actually local to the server itself on port 9901 - this happens if the address returned via the SKU tag and the connection addresses are different

• UDP bind for the game (not lobby) client needs to be skipped

• Optionally, the returned server IP of the slave server should be ignored client-side as well and just use the same public one that it initiates the connection with

TODO

• Document server.cfg entirely
• Figure out LAN redirector completely (in conjunction with client-side patches) - currently players can either play online or local, not mixed. (Only 1 local player is working)