Sam Roberts 51acb54760 Stop returning an error after successful send of zero length UDP packets ...

A zero-length send is invalid with TCP, but well defined with UDP.
udp:send"" was returning (nil,"refused"), indicating that it failed when
the packet was actually sent. The test script reproduces the bug, and
includes a tcpdump of the zero length packet being sent.

2012-04-11 13:45:59 -07:00

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