Hello, On Tue, Apr 09, 2024 at 03:13:01PM +0200, DdB wrote: > from my research, the abbreviated takeaway is:
I never used mbuffer, I use buffer combined with netcat-traditional: # receiver (TCP server on port 8000) nc -l -p 8000 | buffer -S 1048576 -s 32768 -o /dev/null # sender (TCP client on ephemeral port) nc localhost 8000 < /dev/zero I just installed mbuffer: mbuffer -I 8000 -o /dev/null mbuffer -i /dev/zero -O 127.0.0.1:8000 and it also works. > > sudo netstat | grep $port > to return nothing yes, but those work: netstat -a | grep :8000 netstat --listen | grep :8000 Maybe it's just that by default netstat only shows sockets in the ESTABLISHED state and not in the LISTEN state. > What am i doing wrong? If there is a timeout, I would suggest to investigate firewalls on the server side.
