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--------------------------------------------------------------------------------
/vendor/mqttws31.js:
--------------------------------------------------------------------------------
1 | /*******************************************************************************
2 | * Copyright (c) 2013 IBM Corp.
3 | *
4 | * All rights reserved. This program and the accompanying materials
5 | * are made available under the terms of the Eclipse Public License v1.0
6 | * and Eclipse Distribution License v1.0 which accompany this distribution.
7 | *
8 | * The Eclipse Public License is available at
9 | * http://www.eclipse.org/legal/epl-v10.html
10 | * and the Eclipse Distribution License is available at
11 | * http://www.eclipse.org/org/documents/edl-v10.php.
12 | *
13 | * Contributors:
14 | * Andrew Banks - initial API and implementation and initial documentation
15 | *******************************************************************************/
16 |
17 |
18 | // Only expose a single object name in the global namespace.
19 | // Everything must go through this module. Global Messaging module
20 | // only has a single public function, client, which returns
21 | // a Messaging client object given connection details.
22 |
23 | /**
24 | * @namespace Messaging
25 | * Send and receive messages using web browsers.
26 | *
27 | * This programming interface lets a JavaScript client application use the MQTT V3.1 protocol to
28 | * connect to an MQTT-supporting messaging server.
29 | *
30 | * The function supported includes:
31 | *
32 | * - Connecting to and disconnecting from a server. The server is identified by its host name and port number.
33 | *
- Specifying options that relate to the communications link with the server,
34 | * for example the frequency of keep-alive heartbeats, and whether SSL/TLS is required.
35 | *
- Subscribing to and receiving messages from MQTT Topics.
36 | *
- Publishing messages to MQTT Topics.
37 | *
38 | *
39 | *
The API consists of two main objects:
40 | * The Messaging.Client object. This contains methods that provide the functionality of the API,
41 | * including provision of callbacks that notify the application when a message arrives from or is delivered to the messaging server,
42 | * or when the status of its connection to the messaging server changes.
43 | *
44 | * The Messaging.Message object. This encapsulates the payload of the message along with various attributes
45 | * associated with its delivery, in particular the destination to which it has been (or is about to be) sent.
46 | *
47 | * The programming interface validates parameters passed to it, and will throw an Error containing an error message
48 | * intended for developer use, if it detects an error with any parameter.
49 | *
50 | * Example:
51 | *
52 | *
53 | client = new Messaging.Client(location.hostname, Number(location.port), "clientId");
54 | client.onConnectionLost = onConnectionLost;
55 | client.onMessageArrived = onMessageArrived;
56 | client.connect({onSuccess:onConnect});
57 |
58 | function onConnect() {
59 | // Once a connection has been made, make a subscription and send a message.
60 | console.log("onConnect");
61 | client.subscribe("/World");
62 | message = new Messaging.Message("Hello");
63 | message.destinationName = "/World";
64 | client.send(message);
65 | };
66 | function onConnectionLost(responseObject) {
67 | if (responseObject.errorCode !== 0)
68 | console.log("onConnectionLost:"+responseObject.errorMessage);
69 | };
70 | function onMessageArrived(message) {
71 | console.log("onMessageArrived:"+message.payloadString);
72 | client.disconnect();
73 | };
74 | *
76 | * Other programming languages,
77 | * Java,
78 | * C.
79 | */
80 | Messaging = (function (global) {
81 |
82 | // Private variables below, these are only visible inside the function closure
83 | // which is used to define the module.
84 |
85 | var version = "@VERSION@";
86 | var buildLevel = "@BUILDLEVEL@";
87 |
88 | /**
89 | * Unique message type identifiers, with associated
90 | * associated integer values.
91 | * @private
92 | */
93 | var MESSAGE_TYPE = {
94 | CONNECT: 1,
95 | CONNACK: 2,
96 | PUBLISH: 3,
97 | PUBACK: 4,
98 | PUBREC: 5,
99 | PUBREL: 6,
100 | PUBCOMP: 7,
101 | SUBSCRIBE: 8,
102 | SUBACK: 9,
103 | UNSUBSCRIBE: 10,
104 | UNSUBACK: 11,
105 | PINGREQ: 12,
106 | PINGRESP: 13,
107 | DISCONNECT: 14
108 | };
109 |
110 | // Collection of utility methods used to simplify module code
111 | // and promote the DRY pattern.
112 |
113 | /**
114 | * Validate an object's parameter names to ensure they
115 | * match a list of expected variables name for this option
116 | * type. Used to ensure option object passed into the API don't
117 | * contain erroneous parameters.
118 | * @param {Object} obj User options object
119 | * @param {key:type, key2:type, ...} valid keys and types that may exist in obj.
120 | * @throws {Error} Invalid option parameter found.
121 | * @private
122 | */
123 | var validate = function(obj, keys) {
124 | for(key in obj) {
125 | if (obj.hasOwnProperty(key)) {
126 | if (keys.hasOwnProperty(key)) {
127 | if (typeof obj[key] !== keys[key])
128 | throw new Error(format(ERROR.INVALID_TYPE, [typeof obj[key], key]));
129 | } else {
130 | var errorStr = "Unknown property, " + key + ". Valid properties are:";
131 | for (key in keys)
132 | if (keys.hasOwnProperty(key))
133 | errorStr = errorStr+" "+key;
134 | throw new Error(errorStr);
135 | }
136 | }
137 | }
138 | };
139 |
140 | /**
141 | * Return a new function which runs the user function bound
142 | * to a fixed scope.
143 | * @param {function} User function
144 | * @param {object} Function scope
145 | * @return {function} User function bound to another scope
146 | * @private
147 | */
148 | var scope = function (f, scope) {
149 | return function () {
150 | return f.apply(scope, arguments);
151 | };
152 | };
153 |
154 | /**
155 | * Unique message type identifiers, with associated
156 | * associated integer values.
157 | * @private
158 | */
159 | var ERROR = {
160 | OK: {code:0, text:"AMQJSC0000I OK."},
161 | CONNECT_TIMEOUT: {code:1, text:"AMQJSC0001E Connect timed out."},
162 | SUBSCRIBE_TIMEOUT: {code:2, text:"AMQJS0002E Subscribe timed out."},
163 | UNSUBSCRIBE_TIMEOUT: {code:3, text:"AMQJS0003E Unsubscribe timed out."},
164 | PING_TIMEOUT: {code:4, text:"AMQJS0004E Ping timed out."},
165 | INTERNAL_ERROR: {code:5, text:"AMQJS0005E Internal error."},
166 | CONNACK_RETURNCODE: {code:6, text:"AMQJS0006E Bad Connack return code:{0} {1}."},
167 | SOCKET_ERROR: {code:7, text:"AMQJS0007E Socket error:{0}."},
168 | SOCKET_CLOSE: {code:8, text:"AMQJS0008I Socket closed."},
169 | MALFORMED_UTF: {code:9, text:"AMQJS0009E Malformed UTF data:{0} {1} {2}."},
170 | UNSUPPORTED: {code:10, text:"AMQJS0010E {0} is not supported by this browser."},
171 | INVALID_STATE: {code:11, text:"AMQJS0011E Invalid state {0}."},
172 | INVALID_TYPE: {code:12, text:"AMQJS0012E Invalid type {0} for {1}."},
173 | INVALID_ARGUMENT: {code:13, text:"AMQJS0013E Invalid argument {0} for {1}."},
174 | UNSUPPORTED_OPERATION: {code:14, text:"AMQJS0014E Unsupported operation."},
175 | INVALID_STORED_DATA: {code:15, text:"AMQJS0015E Invalid data in local storage key={0} value={1}."},
176 | INVALID_MQTT_MESSAGE_TYPE: {code:16, text:"AMQJS0016E Invalid MQTT message type {0}."},
177 | MALFORMED_UNICODE: {code:17, text:"AMQJS0017E Malformed Unicode string:{0} {1}."},
178 | };
179 |
180 | /** CONNACK RC Meaning. */
181 | var CONNACK_RC = {
182 | 0:"Connection Accepted",
183 | 1:"Connection Refused: unacceptable protocol version",
184 | 2:"Connection Refused: identifier rejected",
185 | 3:"Connection Refused: server unavailable",
186 | 4:"Connection Refused: bad user name or password",
187 | 5:"Connection Refused: not authorized"
188 | };
189 |
190 | /**
191 | * Format an error message text.
192 | * @private
193 | * @param {error} ERROR.KEY value above.
194 | * @param {substitutions} [array] substituted into the text.
195 | * @return the text with the substitutions made.
196 | */
197 | var format = function(error, substitutions) {
198 | var text = error.text;
199 | if (substitutions) {
200 | for (var i=0; i 0) {
204 | var part1 = text.substring(0,start);
205 | var part2 = text.substring(start+field.length);
206 | text = part1+substitutions[i]+part2;
207 | }
208 | }
209 | }
210 | return text;
211 | };
212 |
213 | //MQTT protocol and version 6 M Q I s d p 3
214 | var MqttProtoIdentifier = [0x00,0x06,0x4d,0x51,0x49,0x73,0x64,0x70,0x03];
215 |
216 | /**
217 | * @ignore
218 | * Construct an MQTT wire protocol message.
219 | * @param type MQTT packet type.
220 | * @param options optional wire message attributes.
221 | *
222 | * Optional properties
223 | *
224 | * messageIdentifier: message ID in the range [0..65535]
225 | * payloadMessage: Application Message - PUBLISH only
226 | * connectStrings: array of 0 or more Strings to be put into the CONNECT payload
227 | * topics: array of strings (SUBSCRIBE, UNSUBSCRIBE)
228 | * requestQoS: array of QoS values [0..2]
229 | *
230 | * "Flag" properties
231 | * cleanSession: true if present / false if absent (CONNECT)
232 | * willMessage: true if present / false if absent (CONNECT)
233 | * isRetained: true if present / false if absent (CONNECT)
234 | * userName: true if present / false if absent (CONNECT)
235 | * password: true if present / false if absent (CONNECT)
236 | * keepAliveInterval: integer [0..65535] (CONNECT)
237 | *
238 | * @private
239 | */
240 | var WireMessage = function (type, options) {
241 | this.type = type;
242 | for(name in options) {
243 | if (options.hasOwnProperty(name)) {
244 | this[name] = options[name];
245 | }
246 | }
247 | };
248 |
249 | WireMessage.prototype.encode = function() {
250 | // Compute the first byte of the fixed header
251 | var first = ((this.type & 0x0f) << 4);
252 |
253 | /*
254 | * Now calculate the length of the variable header + payload by adding up the lengths
255 | * of all the component parts
256 | */
257 |
258 | remLength = 0;
259 | topicStrLength = new Array();
260 |
261 | // if the message contains a messageIdentifier then we need two bytes for that
262 | if (this.messageIdentifier != undefined)
263 | remLength += 2;
264 |
265 | switch(this.type) {
266 | // If this a Connect then we need to include 12 bytes for its header
267 | case MESSAGE_TYPE.CONNECT:
268 | remLength += MqttProtoIdentifier.length + 3;
269 | remLength += UTF8Length(this.clientId) + 2;
270 | if (this.willMessage != undefined) {
271 | remLength += UTF8Length(this.willMessage.destinationName) + 2;
272 | // Will message is always a string, sent as UTF-8 characters with a preceding length.
273 | var willMessagePayloadBytes = this.willMessage.payloadBytes;
274 | if (!(willMessagePayloadBytes instanceof Uint8Array))
275 | willMessagePayloadBytes = new Uint8Array(payloadBytes);
276 | remLength += willMessagePayloadBytes.byteLength +2;
277 | }
278 | if (this.userName != undefined)
279 | remLength += UTF8Length(this.userName) + 2;
280 | if (this.password != undefined)
281 | remLength += UTF8Length(this.password) + 2;
282 | break;
283 |
284 | // Subscribe, Unsubscribe can both contain topic strings
285 | case MESSAGE_TYPE.SUBSCRIBE:
286 | first |= 0x02; // Qos = 1;
287 | for ( var i = 0; i < this.topics.length; i++) {
288 | topicStrLength[i] = UTF8Length(this.topics[i]);
289 | remLength += topicStrLength[i] + 2;
290 | }
291 | remLength += this.requestedQos.length; // 1 byte for each topic's Qos
292 | // QoS on Subscribe only
293 | break;
294 |
295 | case MESSAGE_TYPE.UNSUBSCRIBE:
296 | first |= 0x02; // Qos = 1;
297 | for ( var i = 0; i < this.topics.length; i++) {
298 | topicStrLength[i] = UTF8Length(this.topics[i]);
299 | remLength += topicStrLength[i] + 2;
300 | }
301 | break;
302 |
303 | case MESSAGE_TYPE.PUBLISH:
304 | if (this.payloadMessage.duplicate) first |= 0x08;
305 | first = first |= (this.payloadMessage.qos << 1);
306 | if (this.payloadMessage.retained) first |= 0x01;
307 | destinationNameLength = UTF8Length(this.payloadMessage.destinationName);
308 | remLength += destinationNameLength + 2;
309 | var payloadBytes = this.payloadMessage.payloadBytes;
310 | remLength += payloadBytes.byteLength;
311 | if (payloadBytes instanceof ArrayBuffer)
312 | payloadBytes = new Uint8Array(payloadBytes);
313 | else if (!(payloadBytes instanceof Uint8Array))
314 | payloadBytes = new Uint8Array(payloadBytes.buffer);
315 | break;
316 |
317 | case MESSAGE_TYPE.DISCONNECT:
318 | break;
319 |
320 | default:
321 | ;
322 | }
323 |
324 | // Now we can allocate a buffer for the message
325 |
326 | var mbi = encodeMBI(remLength); // Convert the length to MQTT MBI format
327 | var pos = mbi.length + 1; // Offset of start of variable header
328 | var buffer = new ArrayBuffer(remLength + pos);
329 | var byteStream = new Uint8Array(buffer); // view it as a sequence of bytes
330 |
331 | //Write the fixed header into the buffer
332 | byteStream[0] = first;
333 | byteStream.set(mbi,1);
334 |
335 | // If this is a PUBLISH then the variable header starts with a topic
336 | if (this.type == MESSAGE_TYPE.PUBLISH)
337 | pos = writeString(this.payloadMessage.destinationName, destinationNameLength, byteStream, pos);
338 | // If this is a CONNECT then the variable header contains the protocol name/version, flags and keepalive time
339 |
340 | else if (this.type == MESSAGE_TYPE.CONNECT) {
341 | byteStream.set(MqttProtoIdentifier, pos);
342 | pos += MqttProtoIdentifier.length;
343 | var connectFlags = 0;
344 | if (this.cleanSession)
345 | connectFlags = 0x02;
346 | if (this.willMessage != undefined ) {
347 | connectFlags |= 0x04;
348 | connectFlags |= (this.willMessage.qos<<3);
349 | if (this.willMessage.retained) {
350 | connectFlags |= 0x20;
351 | }
352 | }
353 | if (this.userName != undefined)
354 | connectFlags |= 0x80;
355 | if (this.password != undefined)
356 | connectFlags |= 0x40;
357 | byteStream[pos++] = connectFlags;
358 | pos = writeUint16 (this.keepAliveInterval, byteStream, pos);
359 | }
360 |
361 | // Output the messageIdentifier - if there is one
362 | if (this.messageIdentifier != undefined)
363 | pos = writeUint16 (this.messageIdentifier, byteStream, pos);
364 |
365 | switch(this.type) {
366 | case MESSAGE_TYPE.CONNECT:
367 | pos = writeString(this.clientId, UTF8Length(this.clientId), byteStream, pos);
368 | if (this.willMessage != undefined) {
369 | pos = writeString(this.willMessage.destinationName, UTF8Length(this.willMessage.destinationName), byteStream, pos);
370 | pos = writeUint16(willMessagePayloadBytes.byteLength, byteStream, pos);
371 | byteStream.set(willMessagePayloadBytes, pos);
372 | pos += willMessagePayloadBytes.byteLength;
373 |
374 | }
375 | if (this.userName != undefined)
376 | pos = writeString(this.userName, UTF8Length(this.userName), byteStream, pos);
377 | if (this.password != undefined)
378 | pos = writeString(this.password, UTF8Length(this.password), byteStream, pos);
379 | break;
380 |
381 | case MESSAGE_TYPE.PUBLISH:
382 | // PUBLISH has a text or binary payload, if text do not add a 2 byte length field, just the UTF characters.
383 | byteStream.set(payloadBytes, pos);
384 |
385 | break;
386 |
387 | // case MESSAGE_TYPE.PUBREC:
388 | // case MESSAGE_TYPE.PUBREL:
389 | // case MESSAGE_TYPE.PUBCOMP:
390 | // break;
391 |
392 | case MESSAGE_TYPE.SUBSCRIBE:
393 | // SUBSCRIBE has a list of topic strings and request QoS
394 | for (var i=0; i> 4;
417 | var messageInfo = first &= 0x0f;
418 | var pos = 1;
419 |
420 |
421 | // Decode the remaining length (MBI format)
422 |
423 | var digit;
424 | var remLength = 0;
425 | var multiplier = 1;
426 | do {
427 | digit = input[pos++];
428 | remLength += ((digit & 0x7F) * multiplier);
429 | multiplier *= 128;
430 | } while ((digit & 0x80) != 0);
431 |
432 | var wireMessage = new WireMessage(type);
433 | switch(type) {
434 | case MESSAGE_TYPE.CONNACK:
435 | wireMessage.topicNameCompressionResponse = input[pos++];
436 | wireMessage.returnCode = input[pos++];
437 | break;
438 |
439 | case MESSAGE_TYPE.PUBLISH:
440 | var qos = (messageInfo >> 1) & 0x03;
441 |
442 | var len = readUint16(input, pos);
443 | pos += 2;
444 | var topicName = parseUTF8(input, pos, len);
445 | pos += len;
446 | // If QoS 1 or 2 there will be a messageIdentifier
447 | if (qos > 0) {
448 | wireMessage.messageIdentifier = readUint16(input, pos);
449 | pos += 2;
450 | }
451 |
452 | var message = new Messaging.Message(input.subarray(pos));
453 | if ((messageInfo & 0x01) == 0x01)
454 | message.retained = true;
455 | if ((messageInfo & 0x08) == 0x08)
456 | message.duplicate = true;
457 | message.qos = qos;
458 | message.destinationName = topicName;
459 | wireMessage.payloadMessage = message;
460 | break;
461 |
462 | case MESSAGE_TYPE.PUBACK:
463 | case MESSAGE_TYPE.PUBREC:
464 | case MESSAGE_TYPE.PUBREL:
465 | case MESSAGE_TYPE.PUBCOMP:
466 | case MESSAGE_TYPE.UNSUBACK:
467 | wireMessage.messageIdentifier = readUint16(input, pos);
468 | break;
469 |
470 | case MESSAGE_TYPE.SUBACK:
471 | wireMessage.messageIdentifier = readUint16(input, pos);
472 | pos += 2;
473 | wireMessage.grantedQos = input.subarray(pos);
474 | break;
475 |
476 | default:
477 | ;
478 | }
479 |
480 | return wireMessage;
481 | }
482 |
483 | function writeUint16(input, buffer, offset) {
484 | buffer[offset++] = input >> 8; //MSB
485 | buffer[offset++] = input % 256; //LSB
486 | return offset;
487 | }
488 |
489 | function writeString(input, utf8Length, buffer, offset) {
490 | offset = writeUint16(utf8Length, buffer, offset);
491 | stringToUTF8(input, buffer, offset);
492 | return offset + utf8Length;
493 | }
494 |
495 | function readUint16(buffer, offset) {
496 | return 256*buffer[offset] + buffer[offset+1];
497 | }
498 |
499 | /**
500 | * Encodes an MQTT Multi-Byte Integer
501 | * @private
502 | */
503 | function encodeMBI(number) {
504 | var output = new Array(1);
505 | var numBytes = 0;
506 |
507 | do {
508 | var digit = number % 128;
509 | number = number >> 7;
510 | if (number > 0) {
511 | digit |= 0x80;
512 | }
513 | output[numBytes++] = digit;
514 | } while ( (number > 0) && (numBytes<4) );
515 |
516 | return output;
517 | }
518 |
519 | /**
520 | * Takes a String and calculates its length in bytes when encoded in UTF8.
521 | * @private
522 | */
523 | function UTF8Length(input) {
524 | var output = 0;
525 | for (var i = 0; i 0x7FF)
529 | {
530 | // Surrogate pair means its a 4 byte character
531 | if (0xD800 <= charCode && charCode <= 0xDBFF)
532 | {
533 | i++;
534 | output++;
535 | }
536 | output +=3;
537 | }
538 | else if (charCode > 0x7F)
539 | output +=2;
540 | else
541 | output++;
542 | }
543 | return output;
544 | }
545 |
546 | /**
547 | * Takes a String and writes it into an array as UTF8 encoded bytes.
548 | * @private
549 | */
550 | function stringToUTF8(input, output, start) {
551 | var pos = start;
552 | for (var i = 0; i>6 & 0x1F | 0xC0;
569 | output[pos++] = charCode & 0x3F | 0x80;
570 | } else if (charCode <= 0xFFFF) {
571 | output[pos++] = charCode>>12 & 0x0F | 0xE0;
572 | output[pos++] = charCode>>6 & 0x3F | 0x80;
573 | output[pos++] = charCode & 0x3F | 0x80;
574 | } else {
575 | output[pos++] = charCode>>18 & 0x07 | 0xF0;
576 | output[pos++] = charCode>>12 & 0x3F | 0x80;
577 | output[pos++] = charCode>>6 & 0x3F | 0x80;
578 | output[pos++] = charCode & 0x3F | 0x80;
579 | };
580 | }
581 | return output;
582 | }
583 |
584 | function parseUTF8(input, offset, length) {
585 | var output = "";
586 | var utf16;
587 | var pos = offset;
588 |
589 | while (pos < offset+length)
590 | {
591 | var byte1 = input[pos++];
592 | if (byte1 < 128)
593 | utf16 = byte1;
594 | else
595 | {
596 | var byte2 = input[pos++]-128;
597 | if (byte2 < 0)
598 | throw new Error(format(ERROR.MALFORMED_UTF, [byte1.toString(16), byte2.toString(16),""]));
599 | if (byte1 < 0xE0) // 2 byte character
600 | utf16 = 64*(byte1-0xC0) + byte2;
601 | else
602 | {
603 | var byte3 = input[pos++]-128;
604 | if (byte3 < 0)
605 | throw new Error(format(ERROR.MALFORMED_UTF, [byte1.toString(16), byte2.toString(16), byte3.toString(16)]));
606 | if (byte1 < 0xF0) // 3 byte character
607 | utf16 = 4096*(byte1-0xE0) + 64*byte2 + byte3;
608 | else
609 | {
610 | var byte4 = input[pos++]-128;
611 | if (byte4 < 0)
612 | throw new Error(format(ERROR.MALFORMED_UTF, [byte1.toString(16), byte2.toString(16), byte3.toString(16), byte4.toString(16)]));
613 | if (byte1 < 0xF8) // 4 byte character
614 | utf16 = 262144*(byte1-0xF0) + 4096*byte2 + 64*byte3 + byte4;
615 | else // longer encodings are not supported
616 | throw new Error(format(ERROR.MALFORMED_UTF, [byte1.toString(16), byte2.toString(16), byte3.toString(16), byte4.toString(16)]));
617 | }
618 | }
619 | }
620 |
621 | if (utf16 > 0xFFFF) // 4 byte character - express as a surrogate pair
622 | {
623 | utf16 -= 0x10000;
624 | output += String.fromCharCode(0xD800 + (utf16 >> 10)); // lead character
625 | utf16 = 0xDC00 + (utf16 & 0x3FF); // trail character
626 | }
627 | output += String.fromCharCode(utf16);
628 | }
629 | return output;
630 | }
631 |
632 | /** @ignore Repeat keepalive requests, monitor responses.*/
633 | var Pinger = function(client, window, keepAliveInterval) {
634 | this._client = client;
635 | this._window = window;
636 | this._keepAliveInterval = keepAliveInterval*1000;
637 | this.isReset = false;
638 |
639 | var pingReq = new WireMessage(MESSAGE_TYPE.PINGREQ).encode();
640 |
641 | var doTimeout = function (pinger) {
642 | return function () {
643 | return doPing.apply(pinger);
644 | };
645 | };
646 |
647 | /** @ignore */
648 | var doPing = function() {
649 | if (!this.isReset) {
650 | this._client._trace("Pinger.doPing", "Timed out");
651 | this._client._disconnected( ERROR.PING_TIMEOUT.code , format(ERROR.PING_TIMEOUT));
652 | } else {
653 | this.isReset = false;
654 | this._client._trace("Pinger.doPing", "send PINGREQ");
655 | this._client.socket.send(pingReq);
656 | this.timeout = this._window.setTimeout(doTimeout(this), this._keepAliveInterval);
657 | }
658 | }
659 |
660 | this.reset = function() {
661 | this.isReset = true;
662 | this._window.clearTimeout(this.timeout);
663 | if (this._keepAliveInterval > 0)
664 | this.timeout = setTimeout(doTimeout(this), this._keepAliveInterval);
665 | }
666 |
667 | this.cancel = function() {
668 | this._window.clearTimeout(this.timeout);
669 | }
670 | };
671 |
672 | /** @ignore Monitor request completion. */
673 | var Timeout = function(client, window, timeoutSeconds, action, args) {
674 | this._window = window;
675 | if (!timeoutSeconds)
676 | timeoutSeconds = 30;
677 |
678 | var doTimeout = function (action, client, args) {
679 | return function () {
680 | return action.apply(client, args);
681 | };
682 | };
683 | this.timeout = setTimeout(doTimeout(action, client, args), timeoutSeconds * 1000);
684 |
685 | this.cancel = function() {
686 | this._window.clearTimeout(this.timeout);
687 | }
688 | };
689 |
690 | /*
691 | * Internal implementation of the Websockets MQTT V3.1 client.
692 | *
693 | * @name Messaging.ClientImpl @constructor
694 | * @param {String} host the DNS nameof the webSocket host.
695 | * @param {Number} port the port number for that host.
696 | * @param {String} clientId the MQ client identifier.
697 | */
698 | var ClientImpl = function (host, port, clientId) {
699 | // Check dependencies are satisfied in this browser.
700 | if (!("WebSocket" in global && global["WebSocket"] !== null)) {
701 | throw new Error(format(ERROR.UNSUPPORTED, ["WebSocket"]));
702 | }
703 | if (!("localStorage" in global && global["localStorage"] !== null)) {
704 | throw new Error(format(ERROR.UNSUPPORTED, ["localStorage"]));
705 | }
706 | if (!("ArrayBuffer" in global && global["ArrayBuffer"] !== null)) {
707 | throw new Error(format(ERROR.UNSUPPORTED, ["ArrayBuffer"]));
708 | }
709 |
710 | this._trace("Messaging.Client", host, port, clientId);
711 |
712 | this.host = host;
713 | this.port = port;
714 | this.clientId = clientId;
715 |
716 | // Local storagekeys are qualified with the following string.
717 | this._localKey=host+":"+port+":"+clientId+":";
718 |
719 | // Create private instance-only message queue
720 | // Internal queue of messages to be sent, in sending order.
721 | this._msg_queue = [];
722 |
723 | // Messages we have sent and are expecting a response for, indexed by their respective message ids.
724 | this._sentMessages = {};
725 |
726 | // Messages we have received and acknowleged and are expecting a confirm message for
727 | // indexed by their respective message ids.
728 | this._receivedMessages = {};
729 |
730 | // Internal list of callbacks to be executed when messages
731 | // have been successfully sent over web socket, e.g. disconnect
732 | // when it doesn't have to wait for ACK, just message is dispatched.
733 | this._notify_msg_sent = {};
734 |
735 | // Unique identifier for SEND messages, incrementing
736 | // counter as messages are sent.
737 | this._message_identifier = 1;
738 |
739 | // Used to determine the transmission sequence of stored sent messages.
740 | this._sequence = 0;
741 |
742 |
743 | // Load the local state, if any, from the saved version, only restore state relevant to this client.
744 | for(key in localStorage)
745 | if ( key.indexOf("Sent:"+this._localKey) == 0
746 | || key.indexOf("Received:"+this._localKey) == 0)
747 | this.restore(key);
748 | };
749 |
750 | // Messaging Client public instance members.
751 | ClientImpl.prototype.host;
752 | ClientImpl.prototype.port;
753 | ClientImpl.prototype.clientId;
754 |
755 | // Messaging Client private instance members.
756 | ClientImpl.prototype.socket;
757 | /* true once we have received an acknowledgement to a CONNECT packet. */
758 | ClientImpl.prototype.connected = false;
759 | /* The largest message identifier allowed, may not be larger than 2**16 but
760 | * if set smaller reduces the maximum number of outbound messages allowed.
761 | */
762 | ClientImpl.prototype.maxMessageIdentifier = 65536;
763 | ClientImpl.prototype.connectOptions;
764 | ClientImpl.prototype.hostIndex;
765 | ClientImpl.prototype.onConnectionLost;
766 | ClientImpl.prototype.onMessageDelivered;
767 | ClientImpl.prototype.onMessageArrived;
768 | ClientImpl.prototype._msg_queue = null;
769 | ClientImpl.prototype._connectTimeout;
770 | /* The sendPinger monitors how long we allow before we send data to prove to the server that we are alive. */
771 | ClientImpl.prototype.sendPinger = null;
772 | /* The receivePinger monitors how long we allow before we require evidence that the server is alive. */
773 | ClientImpl.prototype.receivePinger = null;
774 |
775 | ClientImpl.prototype._traceBuffer = null;
776 | ClientImpl.prototype._MAX_TRACE_ENTRIES = 100;
777 |
778 | ClientImpl.prototype.connect = function (connectOptions) {
779 | var connectOptionsMasked = this._traceMask(connectOptions, "password");
780 | this._trace("Client.connect", connectOptionsMasked, this.socket, this.connected);
781 |
782 | if (this.connected)
783 | throw new Error(format(ERROR.INVALID_STATE, ["already connected"]));
784 | if (this.socket)
785 | throw new Error(format(ERROR.INVALID_STATE, ["already connected"]));
786 |
787 | this.connectOptions = connectOptions;
788 |
789 | if (connectOptions.hosts) {
790 | this.hostIndex = 0;
791 | this._doConnect(connectOptions.hosts[0], connectOptions.ports[0]);
792 | } else {
793 | this._doConnect(this.host, this.port);
794 | }
795 |
796 | };
797 |
798 | ClientImpl.prototype.subscribe = function (filter, subscribeOptions) {
799 | this._trace("Client.subscribe", filter, subscribeOptions);
800 |
801 | if (!this.connected)
802 | throw new Error(format(ERROR.INVALID_STATE, ["not connected"]));
803 |
804 | var wireMessage = new WireMessage(MESSAGE_TYPE.SUBSCRIBE);
805 | wireMessage.topics=[filter];
806 | if (subscribeOptions.qos != undefined)
807 | wireMessage.requestedQos = [subscribeOptions.qos];
808 | else
809 | wireMessage.requestedQos = [0];
810 |
811 | if (subscribeOptions.onSuccess) {
812 | wireMessage.callback = function() {subscribeOptions.onSuccess({invocationContext:subscribeOptions.invocationContext});};
813 | }
814 | if (subscribeOptions.timeout) {
815 | wireMessage.timeOut = new Timeout(this, window, subscribeOptions.timeout, subscribeOptions.onFailure
816 | , [{invocationContext:subscribeOptions.invocationContext,
817 | errorCode:ERROR.SUBSCRIBE_TIMEOUT.code,
818 | errorMessage:format(ERROR.SUBSCRIBE_TIMEOUT)}]);
819 | }
820 |
821 | // All subscriptions return a SUBACK.
822 | this._requires_ack(wireMessage);
823 | this._schedule_message(wireMessage);
824 | };
825 |
826 | /** @ignore */
827 | ClientImpl.prototype.unsubscribe = function(filter, unsubscribeOptions) {
828 | this._trace("Client.unsubscribe", filter, unsubscribeOptions);
829 |
830 | if (!this.connected)
831 | throw new Error(format(ERROR.INVALID_STATE, ["not connected"]));
832 |
833 | var wireMessage = new WireMessage(MESSAGE_TYPE.UNSUBSCRIBE);
834 | wireMessage.topics = [filter];
835 |
836 | if (unsubscribeOptions.onSuccess) {
837 | wireMessage.callback = function() {unsubscribeOptions.onSuccess({invocationContext:unsubscribeOptions.invocationContext});};
838 | }
839 | if (unsubscribeOptions.timeout) {
840 | wireMessage.timeOut = new Timeout(this, window, unsubscribeOptions.timeout, unsubscribeOptions.onFailure
841 | , [{invocationContext:unsubscribeOptions.invocationContext,
842 | errorCode:ERROR.UNSUBSCRIBE_TIMEOUT.code,
843 | errorMessage:format(ERROR.UNSUBSCRIBE_TIMEOUT)}]);
844 | }
845 |
846 | // All unsubscribes return a SUBACK.
847 | this._requires_ack(wireMessage);
848 | this._schedule_message(wireMessage);
849 | };
850 |
851 | ClientImpl.prototype.send = function (message) {
852 | this._trace("Client.send", message);
853 |
854 | if (!this.connected)
855 | throw new Error(format(ERROR.INVALID_STATE, ["not connected"]));
856 |
857 | wireMessage = new WireMessage(MESSAGE_TYPE.PUBLISH);
858 | wireMessage.payloadMessage = message;
859 |
860 | if (message.qos > 0)
861 | this._requires_ack(wireMessage);
862 | else if (this.onMessageDelivered)
863 | this._notify_msg_sent[wireMessage] = this.onMessageDelivered(wireMessage.payloadMessage);
864 | this._schedule_message(wireMessage);
865 | };
866 |
867 | ClientImpl.prototype.disconnect = function () {
868 | this._trace("Client.disconnect");
869 |
870 | if (!this.socket)
871 | throw new Error(format(ERROR.INVALID_STATE, ["not connecting or connected"]));
872 |
873 | wireMessage = new WireMessage(MESSAGE_TYPE.DISCONNECT);
874 |
875 | // Run the disconnected call back as soon as the message has been sent,
876 | // in case of a failure later on in the disconnect processing.
877 | // as a consequence, the _disconected call back may be run several times.
878 | this._notify_msg_sent[wireMessage] = scope(this._disconnected, this);
879 |
880 | this._schedule_message(wireMessage);
881 | };
882 |
883 | ClientImpl.prototype.getTraceLog = function () {
884 | if ( this._traceBuffer !== null ) {
885 | this._trace("Client.getTraceLog", new Date());
886 | this._trace("Client.getTraceLog in flight messages", this._sentMessages.length);
887 | for (key in this._sentMessages)
888 | this._trace("_sentMessages ",key, this._sentMessages[key]);
889 | for (key in this._receivedMessages)
890 | this._trace("_receivedMessages ",key, this._receivedMessages[key]);
891 |
892 | return this._traceBuffer;
893 | }
894 | };
895 |
896 | ClientImpl.prototype.startTrace = function () {
897 | if ( this._traceBuffer === null ) {
898 | this._traceBuffer = [];
899 | }
900 | this._trace("Client.startTrace", new Date(), version);
901 | };
902 |
903 | ClientImpl.prototype.stopTrace = function () {
904 | delete this._traceBuffer;
905 | };
906 |
907 | ClientImpl.prototype._doConnect = function (host, port) {
908 | // When the socket is open, this client will send the CONNECT WireMessage using the saved parameters.
909 | if (this.connectOptions.useSSL)
910 | wsurl = ["wss://", host, ":", port, "/mqtt"].join("");
911 | else
912 | wsurl = ["ws://", host, ":", port, "/mqtt"].join("");
913 | this.connected = false;
914 | this.socket = new WebSocket(wsurl, 'mqttv3.1');
915 | this.socket.binaryType = 'arraybuffer';
916 | this.socket.onopen = scope(this._on_socket_open, this);
917 | this.socket.onmessage = scope(this._on_socket_message, this);
918 | this.socket.onerror = scope(this._on_socket_error, this);
919 | this.socket.onclose = scope(this._on_socket_close, this);
920 |
921 | this.sendPinger = new Pinger(this, window, this.connectOptions.keepAliveInterval);
922 | this.receivePinger = new Pinger(this, window, this.connectOptions.keepAliveInterval);
923 |
924 | this._connectTimeout = new Timeout(this, window, this.connectOptions.timeout, this._disconnected, [ERROR.CONNECT_TIMEOUT.code, format(ERROR.CONNECT_TIMEOUT)]);
925 | };
926 |
927 |
928 | // Schedule a new message to be sent over the WebSockets
929 | // connection. CONNECT messages cause WebSocket connection
930 | // to be started. All other messages are queued internally
931 | // until this has happened. When WS connection starts, process
932 | // all outstanding messages.
933 | ClientImpl.prototype._schedule_message = function (message) {
934 | this._msg_queue.push(message);
935 | // Process outstanding messages in the queue if we have an open socket, and have received CONNACK.
936 | if (this.connected) {
937 | this._process_queue();
938 | }
939 | };
940 |
941 | ClientImpl.prototype.store = function(prefix, wireMessage) {
942 | storedMessage = {type:wireMessage.type, messageIdentifier:wireMessage.messageIdentifier, version:1};
943 |
944 | switch(wireMessage.type) {
945 | case MESSAGE_TYPE.PUBLISH:
946 | if(wireMessage.pubRecReceived)
947 | storedMessage.pubRecReceived = true;
948 |
949 | // Convert the payload to a hex string.
950 | storedMessage.payloadMessage = {};
951 | var hex = "";
952 | var messageBytes = wireMessage.payloadMessage.payloadBytes;
953 | for (var i=0; i= 2) {
996 | var x = parseInt(hex.substring(0, 2), 16);
997 | hex = hex.substring(2, hex.length);
998 | byteStream[i++] = x;
999 | }
1000 | var payloadMessage = new Messaging.Message(byteStream);
1001 |
1002 | payloadMessage.qos = storedMessage.payloadMessage.qos;
1003 | payloadMessage.destinationName = storedMessage.payloadMessage.destinationName;
1004 | if (storedMessage.payloadMessage.duplicate)
1005 | payloadMessage.duplicate = true;
1006 | if (storedMessage.payloadMessage.retained)
1007 | payloadMessage.retained = true;
1008 | wireMessage.payloadMessage = payloadMessage;
1009 |
1010 | break;
1011 |
1012 | default:
1013 | throw Error(format(ERROR.INVALID_STORED_DATA, [key, value]));
1014 | }
1015 |
1016 | if (key.indexOf("Sent:"+this._localKey) == 0) {
1017 | this._sentMessages[wireMessage.messageIdentifier] = wireMessage;
1018 | } else if (key.indexOf("Received:"+this._localKey) == 0) {
1019 | this._receivedMessages[wireMessage.messageIdentifier] = wireMessage;
1020 | }
1021 | };
1022 |
1023 | ClientImpl.prototype._process_queue = function () {
1024 | var message = null;
1025 | // Process messages in order they were added
1026 | var fifo = this._msg_queue.reverse();
1027 |
1028 | // Send all queued messages down socket connection
1029 | while ((message = fifo.pop())) {
1030 | this._socket_send(message);
1031 | // Notify listeners that message was successfully sent
1032 | if (this._notify_msg_sent[message]) {
1033 | this._notify_msg_sent[message]();
1034 | delete this._notify_msg_sent[message];
1035 | }
1036 | }
1037 | };
1038 |
1039 | /**
1040 | * @ignore
1041 | * Expect an ACK response for this message. Add message to the set of in progress
1042 | * messages and set an unused identifier in this message.
1043 | */
1044 | ClientImpl.prototype._requires_ack = function (wireMessage) {
1045 | var messageCount = Object.keys(this._sentMessages).length;
1046 | if (messageCount > this.maxMessageIdentifier)
1047 | throw Error ("Too many messages:"+messageCount);
1048 |
1049 | while(this._sentMessages[this._message_identifier] !== undefined) {
1050 | this._message_identifier++;
1051 | }
1052 | wireMessage.messageIdentifier = this._message_identifier;
1053 | this._sentMessages[wireMessage.messageIdentifier] = wireMessage;
1054 | if (wireMessage.type === MESSAGE_TYPE.PUBLISH) {
1055 | this.store("Sent:", wireMessage);
1056 | }
1057 | if (this._message_identifier === this.maxMessagIdentifier) {
1058 | this._message_identifier = 1;
1059 | }
1060 | };
1061 |
1062 | /**
1063 | * @ignore
1064 | * Called when the underlying websocket has been opened.
1065 | */
1066 | ClientImpl.prototype._on_socket_open = function () {
1067 | // Create the CONNECT message object.
1068 | var wireMessage = new WireMessage(MESSAGE_TYPE.CONNECT, this.connectOptions);
1069 | wireMessage.clientId = this.clientId;
1070 | this._socket_send(wireMessage);
1071 | };
1072 |
1073 | /**
1074 | * @ignore
1075 | * Called when the underlying websocket has received a complete packet.
1076 | */
1077 | ClientImpl.prototype._on_socket_message = function (event) {
1078 | this._trace("Client._on_socket_message", event.data);
1079 |
1080 | // Reset the receive ping timer, we now have evidence the server is alive.
1081 | this.receivePinger.reset();
1082 | var byteArray = new Uint8Array(event.data);
1083 | try {
1084 | var wireMessage = decodeMessage(byteArray);
1085 | } catch (error) {
1086 | this._disconnected(ERROR.INTERNAL_ERROR.code , format(ERROR.INTERNAL_ERROR, [error.message]));
1087 | return;
1088 | }
1089 | this._trace("Client._on_socket_message", wireMessage);
1090 |
1091 | try {
1092 | switch(wireMessage.type) {
1093 | case MESSAGE_TYPE.CONNACK:
1094 | this._connectTimeout.cancel();
1095 |
1096 | // If we have started using clean session then clear up the local state.
1097 | if (this.connectOptions.cleanSession) {
1098 | for (key in this._sentMessages) {
1099 | var sentMessage = this._sentMessages[key];
1100 | localStorage.removeItem("Sent:"+this._localKey+sentMessage.messageIdentifier);
1101 | }
1102 | this._sentMessages = {};
1103 |
1104 | for (key in this._receivedMessages) {
1105 | var receivedMessage = this._receivedMessages[key];
1106 | localStorage.removeItem("Received:"+this._localKey+receivedMessage.messageIdentifier);
1107 | }
1108 | this._receivedMessages = {};
1109 | }
1110 | // Client connected and ready for business.
1111 | if (wireMessage.returnCode === 0) {
1112 | this.connected = true;
1113 | // Jump to the end of the list of hosts and stop looking for a good host.
1114 | if (this.connectOptions.hosts)
1115 | this.hostIndex = this.connectOptions.hosts.length;
1116 | } else {
1117 | this._disconnected(ERROR.CONNACK_RETURNCODE.code , format(ERROR.CONNACK_RETURNCODE, [wireMessage.returnCode, CONNACK_RC[wireMessage.returnCode]]));
1118 | break;
1119 | }
1120 |
1121 | // Resend messages.
1122 | var sequencedMessages = new Array();
1123 | for (var msgId in this._sentMessages) {
1124 | if (this._sentMessages.hasOwnProperty(msgId))
1125 | sequencedMessages.push(this._sentMessages[msgId]);
1126 | }
1127 |
1128 | // Sort sentMessages into the original sent order.
1129 | var sequencedMessages = sequencedMessages.sort(function(a,b) {return a.sequence - b.sequence;} );
1130 | for (var i=0, len=sequencedMessages.length; i
1389 | * Other programming languages,
1390 | * Java,
1391 | * C.
1392 | *
1393 | * Most applications will create just one Client object and then call its connect() method,
1394 | * however applications can create more than one Client object if they wish.
1395 | * In this case the combination of host, port and clientId attributes must be different for each Client object.
1396 | *
1397 | * The send, subscribe and unsubscribe methods are implemented as asynchronous JavaScript methods
1398 | * (even though the underlying protocol exchange might be synchronous in nature).
1399 | * This means they signal their completion by calling back to the application,
1400 | * via Success or Failure callback functions provided by the application on the method in question.
1401 | * Such callbacks are called at most once per method invocation and do not persist beyond the lifetime
1402 | * of the script that made the invocation.
1403 | *
1404 | * In contrast there are some callback functions most notably onMessageArrived
1405 | * that are defined on the Messaging.Client object.
1406 | * These may get called multiple times, and aren't directly related to specific method invocations made by the client.
1407 | *
1408 | * @name Messaging.Client
1409 | *
1410 | * @constructor
1411 | * Creates a Messaging.Client object that can be used to communicate with a Messaging server.
1412 | *
1413 | * @param {string} host the address of the messaging server, as a DNS name or dotted decimal IP address.
1414 | * @param {number} port the port number in the host to connect to.
1415 | * @param {string} clientId the Messaging client identifier, between 1 and 23 characters in length.
1416 | *
1417 | * @property {string} host read only the server's DNS hostname or dotted decimal IP address.
1418 | * @property {number} port read only the server's port.
1419 | * @property {string} clientId read only used when connecting to the server.
1420 | * @property {function} onConnectionLost called when a connection has been lost,
1421 | * after a connect() method has succeeded.
1422 | * Establish the call back used when a connection has been lost. The connection may be
1423 | * lost because the client initiates a disconnect or because the server or network
1424 | * cause the client to be disconnected. The disconnect call back may be called without
1425 | * the connectionComplete call back being invoked if, for example the client fails to
1426 | * connect.
1427 | * A single response object parameter is passed to the onConnectionLost callback containing the following fields:
1428 | *
1429 | * - errorCode
1430 | *
- errorMessage
1431 | *
1432 | * @property {function} onMessageDelivered called when a message has been delivered.
1433 | * All processing that this Client will ever do has been completed. So, for example,
1434 | * in the case of a Qos=2 message sent by this client, the PubComp flow has been received from the server
1435 | * and the message has been removed from persistent storage before this callback is invoked.
1436 | * Parameters passed to the onMessageDelivered callback are:
1437 | *
1438 | * - Messaging.Message that was delivered.
1439 | *
1440 | * @property {function} onMessageArrived called when a message has arrived in this Messaging.client.
1441 | * Parameters passed to the onMessageArrived callback are:
1442 | *
1443 | * - Messaging.Message that has arrived.
1444 | *
1445 | */
1446 | var Client = function (host, port, clientId) {
1447 | if (typeof host !== "string")
1448 | throw new Error(format(ERROR.INVALID_TYPE, [typeof host, "host"]));
1449 | if (typeof port !== "number" || port < 0)
1450 | throw new Error(format(ERROR.INVALID_TYPE, [typeof port, "port"]));
1451 |
1452 | var clientIdLength = 0;
1453 | for (var i = 0; i 23)
1461 | throw new Error(format(ERROR.INVALID_ARGUMENT, [clientId, "clientId"]));
1462 |
1463 | var client = new ClientImpl(host, port, clientId);
1464 | this._getHost = function() { return client.host; };
1465 | this._setHost = function() { throw new Error(format(ERROR.UNSUPPORTED_OPERATION)); };
1466 |
1467 | this._getPort = function() { return client.port; };
1468 | this._setPort = function() { throw new Error(format(ERROR.UNSUPPORTED_OPERATION)); };
1469 |
1470 | this._getClientId = function() { return client.clientId; };
1471 | this._setClientId = function() { throw new Error(format(ERROR.UNSUPPORTED_OPERATION)); };
1472 |
1473 | this._getOnConnectionLost = function() { return client.onConnectionLost; };
1474 | this._setOnConnectionLost = function(newOnConnectionLost) {
1475 | if (typeof newOnConnectionLost === "function")
1476 | client.onConnectionLost = newOnConnectionLost;
1477 | else
1478 | throw new Error(format(ERROR.INVALID_TYPE, [typeof newOnConnectionLost, "onConnectionLost"]));
1479 | };
1480 |
1481 | this._getOnMessageDelivered = function() { return client.onMessageDelivered; };
1482 | this._setOnMessageDelivered = function(newOnMessageDelivered) {
1483 | if (typeof newOnMessageDelivered === "function")
1484 | client.onMessageDelivered = newOnMessageDelivered;
1485 | else
1486 | throw new Error(format(ERROR.INVALID_TYPE, [typeof newOnMessageDelivered, "onMessageDelivered"]));
1487 | };
1488 |
1489 | this._getOnMessageArrived = function() { return client.onMessageArrived; };
1490 | this._setOnMessageArrived = function(newOnMessageArrived) {
1491 | if (typeof newOnMessageArrived === "function")
1492 | client.onMessageArrived = newOnMessageArrived;
1493 | else
1494 | throw new Error(format(ERROR.INVALID_TYPE, [typeof newOnMessageArrived, "onMessageArrived"]));
1495 | };
1496 |
1497 | /**
1498 | * Connect this Messaging client to its server.
1499 | *
1500 | * @name Messaging.Client#connect
1501 | * @function
1502 | * @param {Object} [connectOptions] attributes used with the connection.
1503 | *
1504 | * Properties of the connect options are:
1505 | * @config {number} [timeout] If the connect has not succeeded within this number of seconds, it is deemed to have failed.
1506 | * The default is 30 seconds.
1507 | * @config {string} [userName] Authentication username for this connection.
1508 | * @config {string} [password] Authentication password for this connection.
1509 | * @config {Messaging.Message} [willMessage] sent by the server when the client disconnects abnormally.
1510 | * @config {Number} [keepAliveInterval] the server disconnects this client if there is no activity for this
1511 | * number of seconds. The default value of 60 seconds is assumed if not set.
1512 | * @config {boolean} [cleanSession] if true(default) the client and server persistent state is deleted on successful connect.
1513 | * @config {boolean} [useSSL] if present and true, use an SSL Websocket connection.
1514 | * @config {object} [invocationContext] passed to the onSuccess callback or onFailure callback.
1515 | * @config {function} [onSuccess] called when the connect acknowledgement has been received from the server.
1516 | * A single response object parameter is passed to the onSuccess callback containing the following fields:
1517 | *
1518 | * - invocationContext as passed in to the onSuccess method in the connectOptions.
1519 | *
1520 | * @config {function} [onFailure] called when the connect request has failed or timed out.
1521 | * A single response object parameter is passed to the onFailure callback containing the following fields:
1522 | *
1523 | * - invocationContext as passed in to the onFailure method in the connectOptions.
1524 | *
- errorCode a number indicating the nature of the error.
1525 | *
- errorMessage text describing the error.
1526 | *
1527 | * @config {Array} [hosts] If present this set of hostnames is tried in order in place
1528 | * of the host and port paramater on the construtor. The hosts and the matching ports are tried one at at time in order until
1529 | * one of then succeeds.
1530 | * @config {Array} [ports] If present this set of ports matching the hosts.
1531 | * @throws {InvalidState} if the client is not in disconnected state. The client must have received connectionLost
1532 | * or disconnected before calling connect for a second or subsequent time.
1533 | */
1534 | this.connect = function (connectOptions) {
1535 | connectOptions = connectOptions || {} ;
1536 | validate(connectOptions, {timeout:"number",
1537 | userName:"string",
1538 | password:"string",
1539 | willMessage:"object",
1540 | keepAliveInterval:"number",
1541 | cleanSession:"boolean",
1542 | useSSL:"boolean",
1543 | invocationContext:"object",
1544 | onSuccess:"function",
1545 | onFailure:"function",
1546 | hosts:"object",
1547 | ports:"object"});
1548 |
1549 | // If no keep alive interval is set, assume 60 seconds.
1550 | if (connectOptions.keepAliveInterval === undefined)
1551 | connectOptions.keepAliveInterval = 60;
1552 |
1553 | if (connectOptions.willMessage) {
1554 | if (!(connectOptions.willMessage instanceof Message))
1555 | throw new Error(format(ERROR.INVALID_TYPE, [connectOptions.willMessage, "connectOptions.willMessage"]));
1556 | // The will message must have a payload that can be represented as a string.
1557 | // Cause the willMessage to throw an exception if this is not the case.
1558 | connectOptions.willMessage.stringPayload;
1559 |
1560 | if (typeof connectOptions.willMessage.destinationName === "undefined")
1561 | throw new Error(format(ERROR.INVALID_TYPE, [typeof connectOptions.willMessage.destinationName, "connectOptions.willMessage.destinationName"]));
1562 | }
1563 | if (typeof connectOptions.cleanSession === "undefined")
1564 | connectOptions.cleanSession = true;
1565 | if (connectOptions.hosts) {
1566 | if (!connectOptions.ports)
1567 | throw new Error(format(ERROR.INVALID_ARGUMENT, [connectOptions.ports, "connectOptions.ports"]));
1568 | if (!(connectOptions.hosts instanceof Array) )
1569 | throw new Error(format(ERROR.INVALID_ARGUMENT, [connectOptions.hosts, "connectOptions.hosts"]));
1570 | if (!(connectOptions.ports instanceof Array) )
1571 | throw new Error(format(ERROR.INVALID_ARGUMENT, [connectOptions.ports, "connectOptions.ports"]));
1572 | if (connectOptions.hosts.length <1 )
1573 | throw new Error(format(ERROR.INVALID_ARGUMENT, [connectOptions.hosts, "connectOptions.hosts"]));
1574 | if (connectOptions.hosts.length != connectOptions.ports.length)
1575 | throw new Error(format(ERROR.INVALID_ARGUMENT, [connectOptions.ports, "connectOptions.ports"]));
1576 | for (var i = 0; i
1594 | * @param {object} [subscribeOptions] used to control the subscription, as follows:
1595 | *
1596 | * @config {number} [qos] the maiximum qos of any publications sent as a result of making this subscription.
1597 | * @config {object} [invocationContext] passed to the onSuccess callback or onFailure callback.
1598 | * @config {function} [onSuccess] called when the subscribe acknowledgement has been received from the server.
1599 | * A single response object parameter is passed to the onSuccess callback containing the following fields:
1600 | *
1601 | * - invocationContext if set in the subscribeOptions.
1602 | *
1603 | * @config {function} [onFailure] called when the subscribe request has failed or timed out.
1604 | * A single response object parameter is passed to the onFailure callback containing the following fields:
1605 | *
1606 | * - invocationContext if set in the subscribeOptions.
1607 | *
- errorCode a number indicating the nature of the error.
1608 | *
- errorMessage text describing the error.
1609 | *
1610 | * @config {number} [timeout] which if present determines the number of seconds after which the onFailure calback is called
1611 | * the presence of a timeout does not prevent the onSuccess callback from being called when the MQTT Suback is eventually received.
1612 | * @throws {InvalidState} if the client is not in connected state.
1613 | */
1614 | this.subscribe = function (filter, subscribeOptions) {
1615 | if (typeof filter !== "string")
1616 | throw new Error("Invalid argument:"+filter);
1617 | subscribeOptions = subscribeOptions || {} ;
1618 | validate(subscribeOptions, {qos:"number",
1619 | invocationContext:"object",
1620 | onSuccess:"function",
1621 | onFailure:"function",
1622 | timeout:"number"
1623 | });
1624 | if (subscribeOptions.timeout && !subscribeOptions.onFailure)
1625 | throw new Error("subscribeOptions.timeout specified with no onFailure callback.");
1626 | if (typeof subscribeOptions.qos !== "undefined"
1627 | && !(subscribeOptions.qos === 0 || subscribeOptions.qos === 1 || subscribeOptions.qos === 2 ))
1628 | throw new Error(format(ERROR.INVALID_ARGUMENT, [subscribeOptions.qos, "subscribeOptions.qos"]));
1629 | client.subscribe(filter, subscribeOptions);
1630 | };
1631 |
1632 | /**
1633 | * Unsubscribe for messages, stop receiving messages sent to destinations described by the filter.
1634 | *
1635 | * @name Messaging.Client#unsubscribe
1636 | * @function
1637 | * @param {string} filter describing the destinations to receive messages from.
1638 | * @param {object} [unsubscribeOptions] used to control the subscription, as follows:
1639 | *
1640 | * @config {object} [invocationContext] passed to the onSuccess callback or onFailure callback.
1641 | * @config {function} [onSuccess] called when the unsubscribe acknowledgement has been receive dfrom the server.
1642 | * A single response object parameter is passed to the onSuccess callback containing the following fields:
1643 | *
1644 | * - invocationContext if set in the unsubscribeOptions.
1645 | *
1646 | * @config {function} [onFailure] called when the unsubscribe request has failed or timed out.
1647 | * A single response object parameter is passed to the onFailure callback containing the following fields:
1648 | *
1649 | * - invocationContext if set in the unsubscribeOptions.
1650 | *
- errorCode a number indicating the nature of the error.
1651 | *
- errorMessage text describing the error.
1652 | *
1653 | * @config {number} [timeout] which if present determines the number of seconds after which the onFailure callback is called, the
1654 | * presence of a timeout does not prevent the onSuccess callback from being called when the MQTT UnSuback is eventually received.
1655 | * @throws {InvalidState} if the client is not in connected state.
1656 | */
1657 | this.unsubscribe = function (filter, unsubscribeOptions) {
1658 | if (typeof filter !== "string")
1659 | throw new Error("Invalid argument:"+filter);
1660 | unsubscribeOptions = unsubscribeOptions || {} ;
1661 | validate(unsubscribeOptions, {invocationContext:"object",
1662 | onSuccess:"function",
1663 | onFailure:"function",
1664 | timeout:"number"
1665 | });
1666 | if (unsubscribeOptions.timeout && !unsubscribeOptions.onFailure)
1667 | throw new Error("unsubscribeOptions.timeout specified with no onFailure callback.");
1668 | client.unsubscribe(filter, unsubscribeOptions);
1669 | };
1670 |
1671 | /**
1672 | * Send a message to the consumers of the destination in the Message.
1673 | *
1674 | * @name Messaging.Client#send
1675 | * @function
1676 | * @param {Messaging.Message} message to send.
1677 |
1678 | * @throws {InvalidState} if the client is not in connected state.
1679 | */
1680 | this.send = function (message) {
1681 | if (!(message instanceof Message))
1682 | throw new Error("Invalid argument:"+typeof message);
1683 | if (typeof message.destinationName === "undefined")
1684 | throw new Error("Invalid parameter Message.destinationName:"+message.destinationName);
1685 |
1686 | client.send(message);
1687 | };
1688 |
1689 | /**
1690 | * Normal disconnect of this Messaging client from its server.
1691 | *
1692 | * @name Messaging.Client#disconnect
1693 | * @function
1694 | * @throws {InvalidState} if the client is not in connected or connecting state.
1695 | */
1696 | this.disconnect = function () {
1697 | client.disconnect();
1698 | };
1699 |
1700 | /**
1701 | * Get the contents of the trace log.
1702 | *
1703 | * @name Messaging.Client#getTraceLog
1704 | * @function
1705 | * @return {Object[]} tracebuffer containing the time ordered trace records.
1706 | */
1707 | this.getTraceLog = function () {
1708 | return client.getTraceLog();
1709 | }
1710 |
1711 | /**
1712 | * Start tracing.
1713 | *
1714 | * @name Messaging.Client#startTrace
1715 | * @function
1716 | */
1717 | this.startTrace = function () {
1718 | client.startTrace();
1719 | };
1720 |
1721 | /**
1722 | * Stop tracing.
1723 | *
1724 | * @name Messaging.Client#stopTrace
1725 | * @function
1726 | */
1727 | this.stopTrace = function () {
1728 | client.stopTrace();
1729 | };
1730 | };
1731 |
1732 | Client.prototype = {
1733 | get host() { return this._getHost(); },
1734 | set host(newHost) { this._setHost(newHost); },
1735 |
1736 | get port() { return this._getPort(); },
1737 | set port(newPort) { this._setPort(newPort); },
1738 |
1739 | get clientId() { return this._getClientId(); },
1740 | set clientId(newClientId) { this._setClientId(newClientId); },
1741 |
1742 | get onConnectionLost() { return this._getOnConnectionLost(); },
1743 | set onConnectionLost(newOnConnectionLost) { this._setOnConnectionLost(newOnConnectionLost); },
1744 |
1745 | get onMessageDelivered() { return this._getOnMessageDelivered(); },
1746 | set onMessageDelivered(newOnMessageDelivered) { this._setOnMessageDelivered(newOnMessageDelivered); },
1747 |
1748 | get onMessageArrived() { return this._getOnMessageArrived(); },
1749 | set onMessageArrived(newOnMessageArrived) { this._setOnMessageArrived(newOnMessageArrived); }
1750 | };
1751 |
1752 | /**
1753 | * An application message, sent or received.
1754 | *
1755 | * Other programming languages,
1756 | * Java,
1757 | * C.
1758 | *
1759 | * All attributes may be null, which implies the default values.
1760 | *
1761 | * @name Messaging.Message
1762 | * @constructor
1763 | * @param {String|ArrayBuffer} payload The message data to be sent.
1764 | *
1765 | * @property {string} payloadString read only The payload as a string if the payload consists of valid UTF-8 characters.
1766 | * @property {ArrayBuffer} payloadBytes read only The payload as an ArrayBuffer.
1767 | *
1768 | * @property {string} destinationName mandatory The name of the destination to which the message is to be sent
1769 | * (for messages about to be sent) or the name of the destination from which the message has been received.
1770 | * (for messages received by the onMessage function).
1771 | *
1772 | * @property {number} qos The Quality of Service used to deliver the message.
1773 | *
1774 | * - 0 Best effort (default).
1775 | *
- 1 At least once.
1776 | *
- 2 Exactly once.
1777 | *
1778 | *
1779 | * @property {Boolean} retained If true, the message is to be retained by the server and delivered
1780 | * to both current and future subscriptions.
1781 | * If false the server only delivers the message to current subscribers, this is the default for new Messages.
1782 | * A received message has the retained boolean set to true if the message was published
1783 | * with the retained boolean set to true
1784 | * and the subscrption was made after the message has been published.
1785 | *
1786 | * @property {Boolean} duplicate read only If true, this message might be a duplicate of one which has already been received.
1787 | * This is only set on messages received from the server.
1788 | *
1789 | */
1790 | var Message = function (newPayload) {
1791 | var payload;
1792 | if ( typeof newPayload === "string"
1793 | || newPayload instanceof ArrayBuffer
1794 | || newPayload instanceof Int8Array
1795 | || newPayload instanceof Uint8Array
1796 | || newPayload instanceof Int16Array
1797 | || newPayload instanceof Uint16Array
1798 | || newPayload instanceof Int32Array
1799 | || newPayload instanceof Uint32Array
1800 | || newPayload instanceof Float32Array
1801 | || newPayload instanceof Float64Array
1802 | ) {
1803 | payload = newPayload;
1804 | } else {
1805 | throw (format(ERROR.INVALID_ARGUMENT, [newPayload, "newPayload"]));
1806 | }
1807 |
1808 | this._getPayloadString = function () {
1809 | if (typeof payload === "string")
1810 | return payload;
1811 | else
1812 | return parseUTF8(payload, 0, payload.length);
1813 | };
1814 |
1815 | this._getPayloadBytes = function() {
1816 | if (typeof payload === "string") {
1817 | var buffer = new ArrayBuffer(UTF8Length(payload));
1818 | var byteStream = new Uint8Array(buffer);
1819 | stringToUTF8(payload, byteStream, 0);
1820 |
1821 | return byteStream;
1822 | } else {
1823 | return payload;
1824 | };
1825 | };
1826 |
1827 | var destinationName = undefined;
1828 | this._getDestinationName = function() { return destinationName; };
1829 | this._setDestinationName = function(newDestinationName) {
1830 | if (typeof newDestinationName === "string")
1831 | destinationName = newDestinationName;
1832 | else
1833 | throw new Error(format(ERROR.INVALID_ARGUMENT, [newDestinationName, "newDestinationName"]));
1834 | };
1835 |
1836 | var qos = 0;
1837 | this._getQos = function() { return qos; };
1838 | this._setQos = function(newQos) {
1839 | if (newQos === 0 || newQos === 1 || newQos === 2 )
1840 | qos = newQos;
1841 | else
1842 | throw new Error("Invalid argument:"+newQos);
1843 | };
1844 |
1845 | var retained = false;
1846 | this._getRetained = function() { return retained; };
1847 | this._setRetained = function(newRetained) {
1848 | if (typeof newRetained === "boolean")
1849 | retained = newRetained;
1850 | else
1851 | throw new Error(format(ERROR.INVALID_ARGUMENT, [newRetained, "newRetained"]));
1852 | };
1853 |
1854 | var duplicate = false;
1855 | this._getDuplicate = function() { return duplicate; };
1856 | this._setDuplicate = function(newDuplicate) { duplicate = newDuplicate; };
1857 | };
1858 |
1859 | Message.prototype = {
1860 | get payloadString() { return this._getPayloadString(); },
1861 | get payloadBytes() { return this._getPayloadBytes(); },
1862 |
1863 | get destinationName() { return this._getDestinationName(); },
1864 | set destinationName(newDestinationName) { this._setDestinationName(newDestinationName); },
1865 |
1866 | get qos() { return this._getQos(); },
1867 | set qos(newQos) { this._setQos(newQos); },
1868 |
1869 | get retained() { return this._getRetained(); },
1870 | set retained(newRetained) { this._setRetained(newRetained); },
1871 |
1872 | get duplicate() { return this._getDuplicate(); },
1873 | set duplicate(newDuplicate) { this._setDuplicate(newDuplicate); }
1874 | };
1875 |
1876 | // Module contents.
1877 | return {
1878 | Client: Client,
1879 | Message: Message
1880 | };
1881 | })(window);
1882 |
--------------------------------------------------------------------------------
/vendor/tween-min.js:
--------------------------------------------------------------------------------
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