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(* ClientSocket.def provides a client TCP interface for ChanIds.
Copyright (C) 2008-2025 Free Software Foundation, Inc.
Contributed by Gaius Mulley <gaius.mulley@southwales.ac.uk>.
This file is part of GNU Modula-2.
GNU Modula-2 is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
GNU Modula-2 is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
Under Section 7 of GPL version 3, you are granted additional
permissions described in the GCC Runtime Library Exception, version
3.1, as published by the Free Software Foundation.
You should have received a copy of the GNU General Public License and
a copy of the GCC Runtime Library Exception along with this program;
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
<http://www.gnu.org/licenses/>. *)
DEFINITION MODULE ClientSocket ;
FROM IOChan IMPORT ChanId ;
FROM ChanConsts IMPORT FlagSet, OpenResults ;
(*
OpenSocket - opens a TCP client connection to host:port.
*)
PROCEDURE OpenSocket (VAR cid: ChanId;
host: ARRAY OF CHAR; port: CARDINAL;
f: FlagSet; VAR res: OpenResults) ;
(*
Close - if the channel identified by cid is not open to
a socket stream, the exception wrongDevice is
raised; otherwise closes the channel, and assigns
the value identifying the invalid channel to cid.
*)
PROCEDURE Close (VAR cid: ChanId) ;
(*
IsSocket - tests if the channel identified by cid is open as
a client socket stream.
*)
PROCEDURE IsSocket (cid: ChanId) : BOOLEAN ;
END ClientSocket.
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