how to listen both udp and tcp from the same port?

问题

I am using socat

server - > socat TCP-LISTEN:4444 STDOUT || socat UDP:LISTEN:4444 STDOUT

client - > socat - UDP:localhost:4444

When I try to connect with udp, I cannot connect, but it happens with tcp. what should I do? ,where is the mistake?

回答1:

A quick look of the socat man page shows UDP:LISTEN doesn't make sense.

It looks like you want:

socat TCP-LISTEN:4444 STDOUT || socat UDP-LISTEN:4444 STDOUT

You have a typo, colon instead of hyphen.

来源：https://stackoverflow.com/questions/62659700/how-to-listen-both-udp-and-tcp-from-the-same-port