1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
|
// Copyright (C) 2016 The Qt Company Ltd.
// Copyright (C) 2016 basysKom GmbH, author Bernd Lamecker <bernd.lamecker@basyskom.com>
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
'use strict';
var readline = require('readline');
var QWebChannel = require('./qwebchannel.js').QWebChannel;
var websocket = require('faye-websocket');
var address = 'ws://127.0.0.1:12345';
var socket = new websocket.Client(address);
console.log('Chat client connecting to ' + address + ' (Ctrl-D to quit)');
var createReadlineInterface = function() {
var bye = function() {
console.log('Bye...');
process.exit(0);
}
var rlif = readline.createInterface({
input: process.stdin,
output: process.stdout
});
rlif.setPrompt('chat: ');
// Handle Ctrl-D and Ctrl-C
rlif.on('close', bye);
rlif.on('SIGINT', bye);
return rlif;
}
var createWebChannel = function(transport, rlif) {
return new QWebChannel(transport, function(channel) {
// We connect to the 'sendText' signal of the remote QObject
// Be aware, that the signal is named for the remote side,
// i.e. the server wants to 'send text'.
// This can be confusing, as we connect to the signal
// to receive incoming messages on our side
channel.objects.core.sendText.connect(function(message) {
process.stdout.cursorTo(0);
process.stdout.clearLine(0);
console.log(' << ' + message);
rlif.prompt();
// Go to end of existing input if any
rlif.write(null, {
ctrl: true,
name: 'e'
})
});
rlif.on('line', function(line) {
var l = line.trim();
if (l !== '') {
process.stdout.moveCursor(0, -1);
process.stdout.cursorTo(0);
process.stdout.clearLine(0);
// The 'receiveText' slot of the remote QObject
// is called with our message.
// Again the naming is for the server side,
// i.e. the slot is used _by the server_ to receive text.
channel.objects.core.receiveText(l);
console.log(' >> ' + l);
}
rlif.prompt();
});
rlif.prompt();
});
}
socket.on('open', function(event) {
console.log("info: Client connected");
var transport = {
// We cant't do 'send: socket.send' here
// because 'send' wouldn't be bound to 'socket'
send: function(data) {
socket.send(data)
}
};
createWebChannel(transport, createReadlineInterface());
// QWebChannel has set up its onmessage handler
// on the transport in the constructor.
// Now we connect it to the websocket event.
socket.on('message', function(event) {
transport.onmessage(event);
});
});
socket.on('error', function(error) {
console.log('Connection error: ' + error.message);
process.exit(1);
});
socket.on('close', function() {
console.log('Connection closed.');
process.exit(1);
});
|
