I've been using udpsend/udpreceive in a project and they've been great.
I have one small request, which I'd happily implement if you don't want
to. For the error like "not connected", it would be very handy if they
used pd_error() so that the error is findable.
Yes sure, go ahead and do it.
I think all the error messages need to be looked at re that issue, when
I have time...
Also it would be nice to have some kind of guidelines for which error
message to use when. There seem to be several variants available.