potential memory leak ?

[Truth1984]

I'm using this with pm2,

server side info:

uptime=32D
restart=34
cpu=0%
mem=1.5gb
user=root
watching=disabled
node-version=v13.8.0
nat-travelsal-version=0.2.18

server log:

0|server  | [relay] Incoming TCP connection from x.x.x.x:52738
0|server  | [relay:null:2336097] Socket pipe not yet authorized, storing data.
0|server  | [relay:null:2336097] Received valid secret: authorized connection.
0|server  | [relay:null:2336097] SocketPipe authorized.
0|server  | [relay:null:2336097] SocketPipe will be pending until a parallel connection occurs
0|server  | [public] Incoming TCP connection from 127.0.0.1:41204
0|server  | [public:null:2336098] No secret defined - authorizing by default.
0|server  | [public:null:2336098] SocketPipe authorized.
0|server  | [relay] Activating pending SocketPipe: connecting SocketPipes relay:null:2336097 and public:null:2336098
0|server  | [public:null:2336098] Socket pipe activated!
0|server  | [relay:null:2336097] Socket pipe activated!
0|server  | [public:null:2336098] SocketPipe closed connection
0|server  | [relay:null:2336097] SocketPipe closed connection
0|server  | [relay] Incoming TCP connection from x.x.x.x::52744
0|server  | [relay:null:2336099] Socket pipe not yet authorized, storing data.
0|server  | [relay:null:2336099] Received valid secret: authorized connection.
0|server  | [relay:null:2336099] SocketPipe authorized.
0|server  | [relay:null:2336099] SocketPipe will be pending until a parallel connection occurs
0|server  | [public] Incoming TCP connection from 127.0.0.1:41208
0|server  | [public:null:2336100] No secret defined - authorizing by default.
0|server  | [public:null:2336100] SocketPipe authorized.
0|server  | [relay] Activating pending SocketPipe: connecting SocketPipes relay:null:2336099 and public:null:2336100
0|server  | [public:null:2336100] Socket pipe activated!
0|server  | [relay:null:2336099] Socket pipe activated!
0|server  | [public:null:2336100] SocketPipe closed connection
0|server  | [relay:null:2336099] SocketPipe closed connection

client side:

uptime=27h
restart=11
cpu=0%
mem=888.9mb
user=root
watching=disabled
node-version=v15.13.0
nat-travelsal-version=0.2.18

for server side, it averages 4 requests / 10 seconds.
I also had another nat setup on the same server:

uptime=32D
restart=144
cpu=0%
mem=31.6mb
user=root
watching=disabled

Problem: server-0 is taking way too much memory, is this a memory leak ?
current fix: using --max-old-space-size args with node