RUST_LOG=debug cargo run -p tcptls 8080
RUSTFLAGS="-Z threads=8" cargo +nightly build --release

time RUSTFLAGS="-Z threads=8" cargo +nightly build --release
Finished release [optimized] target(s) in 23m 26s
real	23m26.801s
user	32m11.223s
sys	4m19.326s
sysctl -n machdep.cpu.brand_string

hyperfine --runs 1 'RUSTFLAGS="-Z threads=8" cargo +nightly build --release'

time cargo build --release
Finished release [optimized] target(s) in 43m 39s
real	43m37.079s
user	39m46.355s
sys	5m10.400s

hyperfine --runs 1 'cargo build --release'

RUST_LOG=debug cargo watch -q -c -w src/ -w .cargo/ -x "run -p tcptls 8080"

echo -n -e "\x08\x00\x00\x00\x01\x00\x00\x00\" | nc 127.0.0.1 8090

for i in {1..100}; do echo '{"method":"isPrime","number":'$i'}' | nc localhost 8090; sleep 0.25; done;
for i in {1..10}; do curl http://0.0.0.0:3000; sleep 0.25; done;

for i in {1..1000}; do curl http://0.0.0.0:3000; done;
for i in {1..100}; do
    curl -X GET http://localhost:8080/ping &
done



for i in {1..10}; do curl http://0.0.0.0:8080; sleep 0.25; done;
echo PING | nc localhost 8090
for i in {1..10}
do
    printf '= %.0s' {1..$i}
    sleep $1s
done
curl -i -X GET -H "Origin: http://0.0.0.0:3001" http://0.0.0.0:3001
curl -H "Origin: http://localhost:3000" -H "Access-Control-Request-Method: GET" -H "Access-Control-Request-Headers: X-Requested-With" -X OPTIONS --verbose http://localhost:3001/


echo '{"method":"isPrime","number":42}' | nc localhost 8090
{"method":"isPrime","prime":false}

$ echo '{"method":"isPrime","number":13}' | nc localhost 8080
{"method":"isPrime","prime":true}

$ echo '{"method":"isPrime","number":13.43}' | nc localhost 8080
{"method":"","prime":false}

$ echo '{"method":"invalidMethod","number":13}' | nc localhost 8080
{"method":"","prime":false}
```
echo -e "GET /version HTTP/1.1\r\nHost: 192.168.64.12\r\n\r\n" | nc 192.168.64.12 1884
nc 192.168.64.12 1884
nc 127.0.0.1 8080

$ nano ~/Library/LaunchAgents/com.example.nsurlsessiond-monitor.plist
$ launchctl load ~/Library/LaunchAgents/com.example.nsurlsessiond-monitor.plist
$ launchctl unload ~/Library/LaunchAgents/com.example.nsurlsessiond-monitor.plist

Connection Tracking:
Enable connection tracking in the iptables:
sudo modprobe nf_conntrack

Rate Limiting:
Use the hashlimit module to rate limit incoming connections:
sudo iptables -A INPUT -p tcp --syn --dport 8090 -m conntrack --ctstate NEW -m hashlimit --hashlimit 50/s --hashlimit-burst 100 --hashlimit-mode srcip --hashlimit-name conn_limit -j ACCEPT
sudo iptables -A INPUT -p tcp --syn --dport 8090 -j DROP

limit the number of concurrent connections from a single IP address
sudo iptables -A INPUT -p tcp --syn --dport 8090 -m connlimit --connlimit-above 10 --connlimit-mask 32 -j DROP

$ ulimit -n
256
$ ulimit -n <new_limit>

$ sysctl kern.num_taskthreads
kern.num_taskthreads: 4096
lsof -p PID

sudo launchctl unload /Library/LaunchDaemons/com.canonical.multipassd.plist
sudo launchctl load -w /Library/LaunchDaemons/com.canonical.multipassd.plist