UDP forwards : client: tun: conn#1: exceeded max udp connections (100)

Running into a weird bug with chisel v1.77 on linux.

setup
Server address: 192.168.0.x
Sever: sudo chisel server -p 8888 --reverse

client address 10.1.1.200
-bash-4.2$ ./chisel client -v 192.168.0.x:8888 R:2000:10.1.1.250:2000/tcp R:2000:10.1.1.250:2000/udp

from 192.168.0.x with chisel running I start a python script 'python connect_and_stream.py 127.0.0.1' to send data to TCP and UDP port 2000. for the UDP part.. the python connect looks like target = socket(AF_INET, SOCK_DGRAM)

chisel starts showing traffic... its working.....

2022/06/04 00:31:57 client: Connecting to ws://192.168.0.x:8888
2022/06/04 00:31:57 client: Handshaking...
2022/06/04 00:31:58 client: Sending config
2022/06/04 00:31:58 client: Connected (Latency 89.543041ms)
2022/06/04 00:31:58 client: tun: SSH connected
2022/06/04 00:31:58 client: tun: conn#1: Open [1/1]
2022/06/04 00:32:10 client: tun: conn#1: exceeded max udp connections (100)
2022/06/04 00:32:10 client: tun: conn#1: exceeded max udp connections (100)
2022/06/04 00:32:10 client: tun: conn#1: exceeded max udp connections (100)
...
I start seeing LOTS of max udp connections exceeded...
...

2022/06/04 00:10:43 client: tun: conn#1: read error: read udp 10.1.1.200:38844->10.1.1.250:2000: use of closed network connection
2022/06/04 00:10:43 client: tun: conn#1: read error: read udp 10.1.1.200:49839->10.1.1.250:2000: use of closed network connection
2022/06/04 00:10:43 client: tun: conn#1: read error: read udp 10.1.1.200:57298->10.1.1.250:2000: use of closed network connection
2022/06/04 00:10:43 client: tun: conn#1: read error: read udp 10.1.1.200:43705->10.1.1.250:2000: use of closed network connection
2022/06/04 00:10:43 client: tun: conn#1: read error: read udp 10.1.1.200:56117->10.1.1.250:2000: use of closed network connection
2022/06/04 00:10:43 client: tun: conn#1: read error: read udp 10.1.1.200:32925->10.1.1.250:2000: use of closed network connection
...
which leads to
2022/06/04 00:10:43 client: tun: conn#1: Close [0/1] (error dial udp 10.1.1.250:2000: socket: too many open files)

is there a way to increase MAX udp connections? or... some switch to make this work?

Start by reproducing the UDP forwarding setup using the supplied chisel client command and connect_and_stream.py script. Inspect the client UDP forwarding path and handling of the reported 100-connection limit; the issue names no source file or test. Done means the connection and file-descriptor exhaustion behavior is explained and the expected resolution is verified.