ocaml/otherlibs/labltk/examples_camltk/socketinput.ml

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(***********************************************************************)
(* *)
(* MLTk, Tcl/Tk interface of Objective Caml *)
(* *)
(* Francois Rouaix, Francois Pessaux, Jun Furuse and Pierre Weis *)
(* projet Cristal, INRIA Rocquencourt *)
(* Jacques Garrigue, Kyoto University RIMS *)
(* *)
(* Copyright 2002 Institut National de Recherche en Informatique et *)
(* en Automatique and Kyoto University. All rights reserved. *)
(* This file is distributed under the terms of the GNU Library *)
(* General Public License, with the special exception on linking *)
(* described in file LICENSE found in the Objective Caml source tree. *)
(* *)
(***********************************************************************)
open Camltk
let _ =
let top_w = opentk () in
let text0_w = Text.create top_w [] in
let entry0_w = Entry.create top_w [] in
let button0_w = Button.create top_w
[Text "Quit"; Command (fun _ -> exit 0)] in
let buffer = String.create 256 in
let master_socket = Unix.socket Unix.PF_INET Unix.SOCK_STREAM 0 in
Unix.bind master_socket (Unix.ADDR_INET(Unix.inet_addr_any, 6789));
Unix.listen master_socket 3;
print_string "Please connect to port 6789..."; print_newline();
let (sock, _) = Unix.accept master_socket in
Fileevent.add_fileinput sock
(fun _ ->
let n = Unix.recv sock buffer 0 (String.length buffer) [] in
let txt = String.sub buffer 0 n in
Text.insert text0_w (TextIndex (End, [])) txt []);
let send _ =
let txt = Entry.get entry0_w ^ "\n" in
Entry.delete_range entry0_w (At 0) End ;
Unix.send sock txt 0 (String.length txt) [];
() in
bind entry0_w [([], KeyPressDetail "Return")] (BindSet ([], send));
pack [text0_w; entry0_w; button0_w][Side Side_Top; Fill Fill_X; Expand true];
mainLoop ()