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observe-006-no-cancellation-on-different-uri-path.js
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observe-006-no-cancellation-on-different-uri-path.js
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/*
Handle a simple response to a GET request from an endpoint where a resource is
being observed (unrelated GET should not cancel the observer):
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
==============================================================================
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 receives the #2 response. The #1 request emits the `acknowledged`
event and the `response` event.
4. After 2s, server sends the first notification:
==============================================================================
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
==============================================================================
5. Client receives the #4 notification. The #1 request emits the `response`
event.
6. Client acknowledges the #4 notification:
==============================================================================
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
==============================================================================
7. Client sends a simple GET request for a different resource:
==============================================================================
Version | Type | Token Length | Code | Message ID
0 1 | 0 0 | 0 0 0 1 | 0 0 0 0 0 0 0 1 | 0x0002
1 | CON | 1 byte | GET | 2
------------------------------------------------------------------------------
Token | Remote Endpoint
01 | 127.0.0.1
------------------------------------------------------------------------------
Uri-Path: observer
Uri-Path: unrelated
==============================================================================
8. Server responds to the #7 request:
==============================================================================
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
------------------------------------------------------------------------------
Content-Format: text/plain;charset=utf-8
------------------------------------------------------------------------------
Payload (6 bytes)
Hello!
==============================================================================
9. Client receives the #8 response. The #1 request doesn't emit the `cancelled`
event. The #7 request emits the `acknowledged` and the `response` event.
10. Server sends the second 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 | 0x4322
1 | CON | 0 bytes | 2.05 Content | 17186
------------------------------------------------------------------------------
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 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
==============================================================================
12. The #1 request emits the `response` event.
12. Client cancels the #1 observer. The #1 request emits the `cancelled` event.
13. Server sends the third notification to #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 : 13
Content-Format: text/plain;charset=utf-8
Max-Age : 10
------------------------------------------------------------------------------
Payload (1 byte)
4
==============================================================================
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 | 0x4323
1 | RST | 0 bytes | Empty | 17187
------------------------------------------------------------------------------
Remote Endpoint: 127.0.0.1
==============================================================================
15. Server receives the #14 reset and removes the #1 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 subscriptionRequest = {
type: Message.Type.CON,
code: Message.Code.GET,
id: 0x0001,
token: new Buffer([]),
uri: '/observer',
observe: 0
};
var subscriptionResponse = {
type: Message.Type.ACK,
code: Message.Code.CONTENT,
id: subscriptionRequest.id,
token: subscriptionRequest.token,
contentFormat: 'text/plain;charset=utf-8',
maxAge: 10,
observe: 10,
payload: new Buffer('1')
};
var notification1 = {
type: Message.Type.CON,
code: Message.Code.CONTENT,
id: 0x4321,
token: subscriptionRequest.token,
contentFormat: 'text/plain;charset=utf-8',
maxAge: 10,
observe: 11,
payload: new Buffer('2')
};
var notificationAck1 = {
type: Message.Type.ACK,
code: Message.Code.EMPTY,
id: notification1.id
};
var unrelatedRequest = {
type: Message.Type.CON,
code: Message.Code.GET,
id: 0x0002,
token: new Buffer([0x01]),
uri: '/observer/unrelated'
};
var unrelatedResponse = {
type: Message.Type.ACK,
code: Message.Code.CONTENT,
id: unrelatedRequest.id,
token: unrelatedRequest.token,
contentFormat: 'text/plain;charset=utf-8',
payload: new Buffer('Hello!')
};
var notification2 = {
type: Message.Type.CON,
code: Message.Code.CONTENT,
id: 0x4322,
token: subscriptionRequest.token,
contentFormat: 'text/plain;charset=utf-8',
maxAge: 10,
observe: 12,
payload: new Buffer('3')
};
var notificationAck2 = {
type: Message.Type.ACK,
code: Message.Code.EMPTY,
id: notification2.id
};
var notification3 = {
type: Message.Type.CON,
code: Message.Code.CONTENT,
id: 0x4323,
token: subscriptionRequest.token,
contentFormat: 'text/plain;charset=utf-8',
maxAge: 10,
observe: 13,
payload: new Buffer('4')
};
var notificationRst3 = {
type: Message.Type.RST,
code: Message.Code.EMPTY,
id: notification3.id
};
ctx.socket.expectRequest(subscriptionRequest);
ctx.socket.scheduleResponse(50, subscriptionResponse);
ctx.socket.scheduleResponse(2050, notification1);
ctx.socket.expectRequest(2050, notificationAck1);
ctx.socket.expectRequest(3000, unrelatedRequest);
ctx.socket.scheduleResponse(3050, unrelatedResponse);
ctx.socket.scheduleResponse(4050, notification2);
ctx.socket.expectRequest(4050, notificationAck2);
ctx.socket.scheduleResponse(6050, notification3);
ctx.socket.expectRequest(6050, notificationRst3);
var subscriptionReq = Message.fromObject(subscriptionRequest);
var unrelatedReq = Message.fromObject(unrelatedRequest);
var subscriptionEventSpy = sinon.spy(subscriptionReq, 'emit');
var unrelatedEventSpy = sinon.spy(unrelatedReq, 'emit');
ctx.client.request(subscriptionReq);
setTimeout(function() { ctx.client.request(unrelatedReq); }, 3000);
setTimeout(function() { ctx.client.cancel(subscriptionReq); }, 5000);
ctx.clock.tick(3600000);
return function assert()
{
ctx.socket.assert();
sinon.assert.callCount(subscriptionEventSpy, 5);
sinon.assert.callCount(unrelatedEventSpy, 2);
sinon.assert.calledWith(
subscriptionEventSpy, 'acknowledged', sinon.match.instanceOf(Message)
);
sinon.assert.calledWith(
subscriptionEventSpy, 'response', sinon.match.instanceOf(Message)
);
sinon.assert.calledWith(subscriptionEventSpy, 'cancelled');
sinon.assert.calledWith(
unrelatedEventSpy, 'acknowledged', sinon.match.instanceOf(Message)
);
sinon.assert.calledWith(
unrelatedEventSpy, 'response', sinon.match.instanceOf(Message)
);
subscriptionEventSpy.args[0][0].should.be.equal('acknowledged');
sinon.assert.coapMessage(
subscriptionEventSpy.args[0][1],
subscriptionResponse,
"Invalid subscription ACK."
);
subscriptionEventSpy.args[1][0].should.be.equal('response');
sinon.assert.coapMessage(
subscriptionEventSpy.args[1][1],
subscriptionResponse,
"Invalid subscription `response`."
);
subscriptionEventSpy.args[2][0].should.be.equal('response');
sinon.assert.coapMessage(
subscriptionEventSpy.args[2][1],
notification1,
"Invalid notification #1."
);
subscriptionEventSpy.args[3][0].should.be.equal('response');
sinon.assert.coapMessage(
subscriptionEventSpy.args[3][1],
notification2,
"Invalid notification #2."
);
subscriptionEventSpy.args[4][0].should.be.equal('cancelled');
unrelatedEventSpy.args[0][0].should.be.equal('acknowledged');
sinon.assert.coapMessage(
unrelatedEventSpy.args[0][1],
unrelatedResponse,
"Invalid cancel ACK."
);
unrelatedEventSpy.args[1][0].should.be.equal('response');
sinon.assert.coapMessage(
unrelatedEventSpy.args[1][1],
unrelatedResponse,
"Invalid cancel `response`."
);
};
});