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Tests for the internal implementation details of L{twisted.internet.udp}.
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A fake UDP socket object, which returns a fixed sequence of strings and/or
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Accumulate reads in a list.
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Error handling tests for C{udp.Port}.
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Socket reads with some good data followed by a socket error which can
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If the socket is unconnected, socket reads with an immediate
connection refusal are ignored, and reading stops. The protocol's
C{connectionRefused} method is not called.
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If the socket connected, socket reads with an immediate
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Socket reads with an unknown socket error are raised.
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