Message3072

Thanks for all your research Bob, it has been most enlightening.
I have checked in some changes, namely
1. The simple fix for the obvious bug relating to failure to configure
the socket implicitly created by _udpsocket.sendto()
2. Cpython compatible behaviour for the recvfrom() method, in the case
where the socket is unbound.
In relation to the latter bug, I have checked in both options in the
code, but commented out my favoured approach, which is to raise an
exception.
Depending on further research results, the outcome of the Sun bug
relating to DatagramChannel.receive, and community input, we may yet
choose the exception route.
I'm leaving this bug open until we make a final decision.