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observe-014-two-observers.js
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observe-014-two-observers.js
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/*
Handle notifications of two different resources from the same remote endpoint:
1. Client sends a request:
==============================================================================
Version | Type | Token Length | Code | Message ID
0 1 | 0 0 | 0 0 0 0 | 0 0 0 0 0 0 0 1 | 0x0001
1 | CON | 0 bytes | GET | 1
------------------------------------------------------------------------------
Remote Endpoint: 127.0.0.1
------------------------------------------------------------------------------
Observe : 0
Uri-Path: observer
Uri-Path: 1
==============================================================================
2. Server sends a piggy-backed response:
==============================================================================
Version | Type | Token Length | Code | Message ID
0 1 | 1 0 | 0 0 0 0 | 0 1 0 0 0 1 0 1 | 0x0001
1 | ACK | 0 bytes | 2.05 Content | 1
------------------------------------------------------------------------------
Remote Endpoint: 127.0.0.1
------------------------------------------------------------------------------
Observe : 10
Content-Format: text/plain;charset=utf-8
Max-Age : 10
------------------------------------------------------------------------------
Payload (1 byte)
1
==============================================================================
3. Client sends another request:
==============================================================================
Version | Type | Token Length | Code | Message ID
0 1 | 0 0 | 0 0 0 1 | 0 0 0 0 0 0 0 1 | 0x0001
1 | CON | 1 byte | GET | 1
------------------------------------------------------------------------------
Token | Remote Endpoint
01 | 127.0.0.1
------------------------------------------------------------------------------
Observe : 0
Uri-Path: observer
Uri-Path: 2
==============================================================================
4. Server sends a piggy-backed response:
==============================================================================
Version | Type | Token Length | Code | Message ID
0 1 | 1 0 | 0 0 0 1 | 0 1 0 0 0 1 0 1 | 0x0002
1 | ACK | 1 byte | 2.05 Content | 2
------------------------------------------------------------------------------
Token | Remote Endpoint
01 | 127.0.0.1
------------------------------------------------------------------------------
Observe : 10
Content-Format: text/plain;charset=utf-8
Max-Age : 10
------------------------------------------------------------------------------
Payload (3 bytes)
one
==============================================================================
3. Client receives the #2 response. The #1 request emits the `acknowledged`
event and the `response` event.
4. Client receives the 34 response. The #3 request emits the `acknowledged`
event and the `response` event.
5. After 2s, server sends a notification for /observer/1:
==============================================================================
Version | Type | Token Length | Code | Message ID
0 1 | 0 0 | 0 0 0 0 | 0 1 0 0 0 1 0 1 | 0x4321
1 | CON | 0 bytes | 2.05 Content | 17185
------------------------------------------------------------------------------
Remote Endpoint: 127.0.0.1
------------------------------------------------------------------------------
Observe : 11
Content-Format: text/plain;charset=utf-8
Max-Age : 10
------------------------------------------------------------------------------
Payload (1 byte)
2
==============================================================================
6. After 2.5s, server sends a notification for /observer/2:
==============================================================================
Version | Type | Token Length | Code | Message ID
0 1 | 0 0 | 0 0 0 1 | 0 1 0 0 0 1 0 1 | 0x4322
1 | CON | 1 byte | 2.05 Content | 17186
------------------------------------------------------------------------------
Token | Remote Endpoint
01 | 127.0.0.1
------------------------------------------------------------------------------
Observe : 11
Content-Format: text/plain;charset=utf-8
Max-Age : 10
------------------------------------------------------------------------------
Payload (3 bytes)
two
==============================================================================
5. Client receives the #6 notification and acknowledges it:
==============================================================================
Version | Type | Token Length | Code | Message ID
0 1 | 1 0 | 0 0 0 0 | 0 0 0 0 0 0 0 0 | 0x4322
1 | ACK | 0 bytes | Empty | 17186
------------------------------------------------------------------------------
Remote Endpoint: 127.0.0.1
==============================================================================
6. The #3 request emits the `response` event.
7. Client receives the #5 notification and acknowledges it:
==============================================================================
Version | Type | Token Length | Code | Message ID
0 1 | 1 0 | 0 0 0 0 | 0 0 0 0 0 0 0 0 | 0x4321
1 | ACK | 0 bytes | Empty | 17185
------------------------------------------------------------------------------
Remote Endpoint: 127.0.0.1
==============================================================================
8. The #1 request emits the `response` event.
9. Client cancels the observers. The #1 and the #3 request emit
the `cancelled` event.
10. Server sends another notification to the #1 observer:
==============================================================================
Version | Type | Token Length | Code | Message ID
0 1 | 0 0 | 0 0 0 0 | 0 1 0 0 0 1 0 1 | 0x4323
1 | CON | 0 bytes | 2.05 Content | 17187
------------------------------------------------------------------------------
Remote Endpoint: 127.0.0.1
------------------------------------------------------------------------------
Observe : 12
Content-Format: text/plain;charset=utf-8
Max-Age : 10
------------------------------------------------------------------------------
Payload (1 byte)
3
==============================================================================
11. Client receives the #10 notification, but resets it:
==============================================================================
Version | Type | Token Length | Code | Message ID
0 1 | 1 1 | 0 0 0 0 | 0 0 0 0 0 0 0 0 | 0x4323
1 | RST | 0 bytes | Empty | 17187
------------------------------------------------------------------------------
Remote Endpoint: 127.0.0.1
==============================================================================
12. Server receives the #12 reset and removes the #1 observer.
13. Server sends another notification to the #3 observer:
==============================================================================
Version | Type | Token Length | Code | Message ID
0 1 | 0 0 | 0 0 0 1 | 0 1 0 0 0 1 0 1 | 0x4324
1 | CON | 1 byte | 2.05 Content | 17188
------------------------------------------------------------------------------
Token | Remote Endpoint
01 | 127.0.0.1
------------------------------------------------------------------------------
Observe : 12
Content-Format: text/plain;charset=utf-8
Max-Age : 10
------------------------------------------------------------------------------
Payload (5 bytes)
three
==============================================================================
14. Client receives the #13 notification, but resets it:
==============================================================================
Version | Type | Token Length | Code | Message ID
0 1 | 1 1 | 0 0 0 0 | 0 0 0 0 0 0 0 0 | 0x4324
1 | RST | 0 bytes | Empty | 17188
------------------------------------------------------------------------------
Remote Endpoint: 127.0.0.1
==============================================================================
15. Server receives the #14 reset and removes the #3 observer.
*/
'use strict';
require('should');
var sinon = require('sinon');
var helpers = require('../helpers');
var Message = require(helpers.LIB_DIR).Message;
helpers.test(__filename, function(ctx)
{
/*jshint maxstatements:999*/
var sub1Request = {
type: Message.Type.CON,
code: Message.Code.GET,
id: 0x0001,
token: new Buffer([]),
uri: '/observer/1',
observe: 0
};
var sub1Response = {
type: Message.Type.ACK,
code: Message.Code.CONTENT,
id: sub1Request.id,
token: sub1Request.token,
contentFormat: 'text/plain;charset=utf-8',
maxAge: 10,
observe: 10,
payload: new Buffer('1')
};
var sub1Nft1 = {
type: Message.Type.CON,
code: Message.Code.CONTENT,
id: 0x4321,
token: sub1Request.token,
contentFormat: 'text/plain;charset=utf-8',
maxAge: 10,
observe: 11,
payload: new Buffer('2')
};
var sub1Nft1Ack = {
type: Message.Type.ACK,
code: Message.Code.EMPTY,
id: sub1Nft1.id
};
var sub1Nft2 = {
type: Message.Type.CON,
code: Message.Code.CONTENT,
id: 0x4322,
token: sub1Request.token,
contentFormat: 'text/plain;charset=utf-8',
maxAge: 10,
observe: 12,
payload: new Buffer('3')
};
var sub1Nft2Rst = {
type: Message.Type.RST,
code: Message.Code.EMPTY,
id: sub1Nft2.id
};
var sub2Request = {
type: Message.Type.CON,
code: Message.Code.GET,
id: 0x0002,
token: new Buffer([0x01]),
uri: '/observer/2',
observe: 0
};
var sub2Response = {
type: Message.Type.ACK,
code: Message.Code.CONTENT,
id: sub2Request.id,
token: sub2Request.token,
contentFormat: 'text/plain;charset=utf-8',
maxAge: 10,
observe: 10,
payload: new Buffer('one')
};
var sub2Nft1 = {
type: Message.Type.CON,
code: Message.Code.CONTENT,
id: 0x4323,
token: sub2Request.token,
contentFormat: 'text/plain;charset=utf-8',
maxAge: 10,
observe: 11,
payload: new Buffer('two')
};
var sub2Nft1Ack = {
type: Message.Type.ACK,
code: Message.Code.EMPTY,
id: sub2Nft1.id
};
var sub2Nft2 = {
type: Message.Type.CON,
code: Message.Code.CONTENT,
id: 0x4324,
token: sub2Request.token,
contentFormat: 'text/plain;charset=utf-8',
maxAge: 10,
observe: 12,
payload: new Buffer('three')
};
var sub2Nft2Rst = {
type: Message.Type.RST,
code: Message.Code.EMPTY,
id: sub2Nft2.id
};
ctx.socket.expectRequest(sub1Request);
ctx.socket.expectRequest(sub2Request);
ctx.socket.scheduleResponse(50, sub1Response);
ctx.socket.scheduleResponse(75, sub2Response);
ctx.socket.scheduleResponse(2050, sub2Nft1);
ctx.socket.expectRequest(2050, sub2Nft1Ack);
ctx.socket.scheduleResponse(2550, sub1Nft1);
ctx.socket.expectRequest(2550, sub1Nft1Ack);
ctx.socket.scheduleResponse(4050, sub1Nft2);
ctx.socket.expectRequest(4050, sub1Nft2Rst);
ctx.socket.scheduleResponse(4075, sub2Nft2);
ctx.socket.expectRequest(4075, sub2Nft2Rst);
var sub1Req = Message.fromObject(sub1Request);
var sub2Req = Message.fromObject(sub2Request);
var sub1EventSpy = sinon.spy(sub1Req, 'emit');
var sub2EventSpy = sinon.spy(sub2Req, 'emit');
ctx.client.request(sub1Req);
ctx.client.request(sub2Req);
setTimeout(
function()
{
ctx.client.cancel(sub1Req);
ctx.client.cancel(sub2Req);
},
3000
);
ctx.clock.tick(3600000);
return function assert()
{
ctx.socket.assert();
sinon.assert.callCount(sub1EventSpy, 4);
sinon.assert.callCount(sub2EventSpy, 4);
sinon.assert.calledWith(
sub1EventSpy, 'acknowledged', sinon.match.instanceOf(Message)
);
sinon.assert.calledWith(
sub1EventSpy, 'response', sinon.match.instanceOf(Message)
);
sinon.assert.calledWith(sub1EventSpy, 'cancelled');
sinon.assert.calledWith(
sub2EventSpy, 'acknowledged', sinon.match.instanceOf(Message)
);
sinon.assert.calledWith(
sub2EventSpy, 'response', sinon.match.instanceOf(Message)
);
sinon.assert.calledWith(sub2EventSpy, 'cancelled');
sub1EventSpy.args[0][0].should.be.equal('acknowledged');
sinon.assert.coapMessage(
sub1EventSpy.args[0][1],
sub1Response,
"Invalid `acknowledged` #1."
);
sub1EventSpy.args[1][0].should.be.equal('response');
sinon.assert.coapMessage(
sub1EventSpy.args[1][1],
sub1Response,
"Invalid `response` #1."
);
sub1EventSpy.args[2][0].should.be.equal('response');
sinon.assert.coapMessage(
sub1EventSpy.args[2][1],
sub1Nft1,
"Invalid `response` #2."
);
sub1EventSpy.args[3][0].should.be.equal('cancelled');
sub2EventSpy.args[0][0].should.be.equal('acknowledged');
sinon.assert.coapMessage(
sub2EventSpy.args[0][1],
sub2Response,
"Invalid `acknowledged` #2."
);
sub2EventSpy.args[1][0].should.be.equal('response');
sinon.assert.coapMessage(
sub2EventSpy.args[1][1],
sub2Response,
"Invalid `response` #3."
);
sub2EventSpy.args[2][0].should.be.equal('response');
sinon.assert.coapMessage(
sub2EventSpy.args[2][1],
sub2Nft1,
"Invalid `response` #4."
);
sub2EventSpy.args[3][0].should.be.equal('cancelled');
};
});