Written in Rust, with love and care using Tokio framework. Should be as fast as hell, or slow as hell. I don't know, but you should try to use it anyway :)
Program is intended to prevent some types of DoS attacks targeted to SRCDS/HLDS servers by caching some requests before they even arrive to the server. To function properly it needs iptables rule to intercept incoming packets.
$ ./target/debug/bin --help
source_query_cacher 0.1.X
Alik Aslanyan <cplusplus256@gmail.com>
USAGE:
bin [OPTIONS] --list <list>...
FLAGS:
-h, --help Prints help information
-V, --version Prints version information
OPTIONS:
--challenge-number-expire <challenge_number_expire>
Challenge number expire time in milliseconds. [default: 1000]
-c, --chunk-size <chunk_size>
Number of servers to dispatched on the same thread. [default: 5]
--client-queue-expire <client_queue_expire>
Client queue expire time in milliseconds. [default: 1000]
--ignore-unknown-challenge_numbers <ignore_unknown_challenge_numbers>
Ignore unknown challenge numbers. Some monitorings violate protocol and don't request challenge numbers from
server. [default: false]
-l, --list <list>...
List of strings specified in "PROXY_IP:PORT SERVER_IP:PORT" format
-p, --update-period <update_period>
Update period in milliseconds. [default: 1000]
Example usage:
$ ./source_query_cacher -p 1000 -c 5 -l "127.0.0.1:27015 127.0.0.1:27016" "127.0.0.1:27018 127.0.0.1:27019"
Rust community! Especially Rust Tokio and Rust russian telegram chats for the great help and support ։)