When running the latest version of PD Vanilla 0.45.4. i am trying to use one of the examples in the netsend help file to connect to localhost at port 3000. I need to use the default ASCII socket connection over TCP, however every time I click on connect I get the following error:

connecting to port 3000
connecting stream socket: Connection refused (61)

It connects ok using the -U UDP switch but I need to use TCP.

I have tested with 10.8 and 10.9 and both have the same issue. I would also point out that I don't have a firewall enabled.

AFAIK, UDP isn't a connection oriented protocol, hence the fact it says "connected" doesn't count.

As for TCP, I suppose you tried to connect to localhost ?
You have to run both some netreceive and some netsend object in order to make it work.

Last reason could be, your system doesn't permet to bind (open) a new TCP port locally.

(late answer for this post after a search about "netreceive")