VT2016 DDP - Revision history

Xueyong.Qian: /* Bibliographie */

2016-11-27T21:01:58Z

Bibliographie

← Older revision		Revision as of 21:01, 27 November 2016
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	* https://www.meteor.com/		* https://www.meteor.com/
	* https://en.wikipedia.org/wiki/Meteor_(web_framework)		* https://en.wikipedia.org/wiki/Meteor_(web_framework)
			* https://developer.mozilla.org/en-US/docs/Web/API/WebSockets_API
	* https://meteorhacks.com/introduction-to-ddp.html		* https://meteorhacks.com/introduction-to-ddp.html

Xueyong.Qian: /* What is DDP? */

2016-11-27T21:01:38Z

What is DDP?

← Older revision		Revision as of 21:01, 27 November 2016
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	===What is DDP?===		===What is DDP?===
	DDP is the heart of MeteorJS and it’s the protocol Meteor uses to communicate between the client and the server. DDP is an acronym for Distributed Data Protocol. Technically, DDP can be implemented on top of any duplex transport. Meteor’s current implementation is based on WebSockets and SockJS. SockJS is a WebSockets emulation transport, which can be used when WebSockets is not available.		DDP is the heart of MeteorJS and it’s the protocol Meteor uses to communicate between the client and the server. DDP is an acronym for Distributed Data Protocol. Technically, DDP can be implemented on top of any duplex transport. Meteor’s current implementation is based on WebSockets and SockJS. SockJS is a WebSockets emulation transport, which can be used when WebSockets is not available.

	WebSockets is an advanced technology that makes it possible to open an interactive communication session between the user's browser and a server. With this API, you can send messages to a server and receive event-driven responses without having to poll the server for a reply.		WebSockets is an advanced technology that makes it possible to open an interactive communication session between the user's browser and a server. With this API, you can send messages to a server and receive event-driven responses without having to poll the server for a reply.

Xueyong.Qian: /* What is DDP? */

2016-11-27T21:01:29Z

What is DDP?

← Older revision		Revision as of 21:01, 27 November 2016
Line 25:		Line 25:
	===What is DDP?===		===What is DDP?===
	DDP is the heart of MeteorJS and it’s the protocol Meteor uses to communicate between the client and the server. DDP is an acronym for Distributed Data Protocol. Technically, DDP can be implemented on top of any duplex transport. Meteor’s current implementation is based on WebSockets and SockJS. SockJS is a WebSockets emulation transport, which can be used when WebSockets is not available.		DDP is the heart of MeteorJS and it’s the protocol Meteor uses to communicate between the client and the server. DDP is an acronym for Distributed Data Protocol. Technically, DDP can be implemented on top of any duplex transport. Meteor’s current implementation is based on WebSockets and SockJS. SockJS is a WebSockets emulation transport, which can be used when WebSockets is not available.
			WebSockets is an advanced technology that makes it possible to open an interactive communication session between the user's browser and a server. With this API, you can send messages to a server and receive event-driven responses without having to poll the server for a reply.

	===What does DDP do?===		===What does DDP do?===

Xueyong.Qian: /* What is DDP? */

2016-11-27T21:00:12Z

What is DDP?

← Older revision		Revision as of 21:00, 27 November 2016
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	===What is DDP?===		===What is DDP?===
	DDP is the heart of MeteorJS and it’s the protocol Meteor uses to communicate between the client and the server. DDP is an acronym for Distributed Data Protocol. ~~Meteor~~ ~~has~~ implemented ~~both~~ ~~client~~ ~~and~~ ~~server~~ ~~implementations~~ ~~for~~ ~~DDP~~.		DDP is the heart of MeteorJS and it’s the protocol Meteor uses to communicate between the client and the server. DDP is an acronym for Distributed Data Protocol. Technically, DDP can be implemented on top of any duplex transport. Meteor’s current implementation is based on WebSockets and SockJS. SockJS is a WebSockets emulation transport, which can be used when WebSockets is not available.

	===What does DDP do?===		===What does DDP do?===

Xueyong.Qian: /* Bibliographie */

2016-11-27T20:58:29Z

Bibliographie

← Older revision		Revision as of 20:58, 27 November 2016
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	=Bibliographie=		=Bibliographie=
	* https://www.meteor.com/		* https://www.meteor.com/
			* https://en.wikipedia.org/wiki/Meteor_(web_framework)
	* https://meteorhacks.com/introduction-to-ddp.html		* https://meteorhacks.com/introduction-to-ddp.html

Xueyong.Qian: /* Meteor */

2016-11-27T20:57:54Z

Meteor

← Older revision		Revision as of 20:57, 27 November 2016
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	[[file:meteor_logo.png]]		[[file:meteor_logo.png]]

			Meteor, or MeteorJS, is a free and open-source JavaScript web framework written using Node.js. Meteor allows for rapid prototyping and produces cross-platform (Android, iOS, Web) code. It integrates with MongoDB and uses the Distributed Data Protocol and a publish–subscribe pattern to automatically propagate data changes to clients without requiring the developer to write any synchronization code. On the client, Meteor depends on jQuery and can be used with any JavaScript UI widget library.
	Meteor is a full-stack Javascript Framework

	==DDP==		==DDP==

Xueyong.Qian: /* Managing Data */

2016-11-27T20:46:42Z

Managing Data

← Older revision		Revision as of 20:46, 27 November 2016
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	We’ve a data source called account, which holds all the transactions made by the users. In this example, sacha will connect to his account to get his transactions. After arunoda makes a transfer, sacha will receive the new transaction. Here’s the data flow for this:		We’ve a data source called account, which holds all the transactions made by the users. In this example, sacha will connect to his account to get his transactions. After arunoda makes a transfer, sacha will receive the new transaction. Here’s the data flow for this:

			[[file:meteor_manage_data.png]]

	*The DDP client (sacha) sends a subscription request for his account.		*The DDP client (sacha) sends a subscription request for his account.
	*He will receive a couple of added notifications with the current transactions in his account.		*He will receive a couple of added notifications with the current transactions in his account.

Xueyong.Qian: /* Handling Remote Procedure Calls */

2016-11-27T20:45:52Z

Handling Remote Procedure Calls

← Older revision		Revision as of 20:45, 27 November 2016
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	====Handling Remote Procedure Calls====		====Handling Remote Procedure Calls====
	With RPC, you can invoke a method on the server and get something back in return. Besides that, DDP has a nice feature: it notifies the caller after all the write operations in the method have been reflected to all the other connected clients.		With RPC, you can invoke a method on the server and get something back in return. Besides that, DDP has a nice feature: it notifies the caller after all the write operations in the method have been reflected to all the other connected clients.

	[[file:meteor_rpc.png]]		[[file:meteor_rpc.png]]

Xueyong.Qian: /* Handling Remote Procedure Calls */

2016-11-27T20:45:29Z

Handling Remote Procedure Calls

← Older revision		Revision as of 20:45, 27 November 2016
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	====Handling Remote Procedure Calls====		====Handling Remote Procedure Calls====
	With RPC, you can invoke a method on the server and get something back in return. Besides that, DDP has a nice feature: it notifies the caller after all the write operations in the method have been reflected to all the other connected clients.		With RPC, you can invoke a method on the server and get something back in return. Besides that, DDP has a nice feature: it notifies the caller after all the write operations in the method have been reflected to all the other connected clients.
			[[file:meteor_rpc.png]]

	*The DDP client (arunoda) invokes the method transferMoney with three parameters: 1000USD, arunoda and sacha.		*The DDP client (arunoda) invokes the method transferMoney with three parameters: 1000USD, arunoda and sacha.
	*Then after the transfer has been accepted, the DDP server (bank) sends a message with an updated balance to arunoda’s account. The balance is in the result field. If there was an error, there will be an error field instead of the result.		*Then after the transfer has been accepted, the DDP server (bank) sends a message with an updated balance to arunoda’s account. The balance is in the result field. If there was an error, there will be an error field instead of the result.

Xueyong.Qian: /* Meteor */

2016-11-27T20:43:39Z

Meteor

← Older revision		Revision as of 20:43, 27 November 2016
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	==Meteor==		==Meteor==
	[[file:meteor_logo.png]]		[[file:meteor_logo.png]]

	Meteor is a full-stack Javascript Framework		Meteor is a full-stack Javascript Framework