tcp/src/common/StreamWr.i3


 Copyright 1999-2003 John D. Polstra.
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INTERFACE StreamWr;
A StreamWr.T, or stream writer, is a subtype of Wr.T which represents a long-running output stream such as a pipe or a TCP connection. The implementation of a stream writer periodically resets certain internal variables in order to keep them from overflowing. In general, Wr.Index() will return incorrect results for stream writers. But the number of bytes transferred can be obtained by calling ByteCount().

IMPORT Wr;

TYPE
  T <: Wr.T;

PROCEDURE ByteCount(swr: T): LONGREAL;
Return the number of bytes transferred so far.

END StreamWr.