Copyright 1992 Digital Equipment Corporation.
Distributed only by permission.
Last modified on Wed Mar 16 12:22:38 PST 1994 by wobber
INTERFACE TCPSpecial;
IMPORT TCP, IP, Thread;
procedures
PROCEDURE EOF(t: TCP.T) : BOOLEAN;
Returns TRUE if and only if there are no more bytes to be read from
this connection, and the connection indicates end-of-file (e.g.
the other side closed it.
PROCEDURE StartConnect(to: IP.Endpoint;
from: IP.Endpoint := IP.NullEndPoint): TCP.T
RAISES {IP.Error};
StartConnect initiates a request to connect to the destination
specified by ep. If msgT is TRUE then the results reader
and writer fields are of type MsgRd.T and MsgWr.T. Otherwise,
they are a normal reader and writer. The resulting T can be used
to make read and write calls, but these may result in errors if
in fact the connection attempt is not successful.
PROCEDURE FinishConnect(
t: TCP.T; waitFor: LONGREAL := -1.0D0) : BOOLEAN
RAISES {IP.Error, Thread.Alerted};
FinishConnect returns a BOOLEAN to indicate if a connection
request initiated via StartConnect has successfully completed.
A result of TRUE indicates that it has. FALSE means that the
connection request is still outstanding. If waitFor is negative,
then FinishConnect waits indefinitely until the operation completes,
otherwise it waits for a maximum of waitFor seconds. The caller
should continue to call this procedure until it either returns TRUE
or raises an error.
END TCPSpecial.